Merge branch 'release/1.1.0'

2024-12-03 10:13:18 +03:00 · 2024-12-03 10:13:18 +03:00 · 5b35e154fc
commit 5b35e154fc
parent 9e85e4e8de 55072780c6
46 changed files with 1976 additions and 251 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -1,9 +1,9 @@
 CMAKE_MINIMUM_REQUIRED (VERSION 3.0)

-PROJECT (ervu-sign-module VERSION 1.0.0 LANGUAGES C)
-
 SET (CMAKE_C_COMPILER "gcc")

+PROJECT (ervu-sign-module VERSION 1.1.0 LANGUAGES C)
+
 IF (CMAKE_VERBOSE)
    SET (CMAKE_VERBOSE_MAKEFILE 1)
 ENDIF ()
@ -49,8 +49,30 @@ SET (DEP_LIBS
     -lfcgi
     -lglib-2.0
     -ldl
+     -ljson-glib-1.0
+     -lgobject-2.0
 )

+# JSON-GLIB
+MESSAGE ("")
+MESSAGE ("Try to find the JSON-glib-1.0..")
+pkg_check_modules (JSONGLIB REQUIRED json-glib-1.0)
+
+IF (NOT JSONGLIB_FOUND)
+	MESSAGE(SEND_ERROR "Can not find json-glib-1.0")
+ELSE ()
+	MESSAGE ("json-glib-1.0 is found: ")
+	MESSAGE ("JSONGLIB_LIB_INCLUDE_DIR              : "	${JSONGLIB_LIB_INCLUDE_DIR})
+	MESSAGE ("JSONGLIB_INCLUDE_DIR                  : "	${JSONGLIB_INCLUDE_DIR})
+	MESSAGE ("JSONGLIB_LIBRARY_DIR                  : "	${JSONGLIB_LIBRARY_DIR})
+	MESSAGE ("JSONGLIB_INCLUDE_DIRS                 : "	${JSONGLIB_INCLUDE_DIRS})
+	MESSAGE ("JSONGLIB_LIBRARY_DIRS                 : "	${JSONGLIB_LIBRARY_DIRS})
+	MESSAGE ("JSONGLIB_LIBRARIES                    : " ${JSONGLIB_LIBRARIES})
+ENDIF (NOT JSONGLIB_FOUND)
+MESSAGE ("")
+
+INCLUDE_DIRECTORIES ("${JSONGLIB_INCLUDE_DIRS}")
+
 # version.h
 CONFIGURE_FILE (${SOURCE_DIR}/version.h.in ${SOURCE_DIR}/version.h)

@ -76,6 +98,14 @@ INCLUDE_DIRECTORIES ("${CRYPTOPRO_INCLUDE_DIRS}")

 FILE (GLOB_RECURSE HEADERS "${SOURCE_DIR}/*.h")

+# tests
+option(WITH_TESTS "Build with tests" OFF)
+IF (WITH_TESTS)
+    MESSAGE ("Build with tests: ON")
+    enable_testing()
+    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/tests/)
+ENDIF ()
+
 ADD_EXECUTABLE (${PROJECT_NAME}
    ${HEADERS}
    ${SOURCE_DIR}/main.c
@ -88,6 +118,9 @@ ADD_EXECUTABLE (${PROJECT_NAME}
    ${UTILS_DIR}/conf_file_context.c
    ${UTILS_DIR}/cryptopro.c
    ${UTILS_DIR}/gconf_file.c
+    ${UTILS_DIR}/glib_utils.c
+    ${UTILS_DIR}/json_parser.c
+    ${UTILS_DIR}/jwt.c
    ${UTILS_DIR}/library.c
    ${UTILS_DIR}/logger.c
    ${UTILS_DIR}/str_t.c
@ -97,6 +130,8 @@ ADD_EXECUTABLE (${PROJECT_NAME}
    ${FCGISRV_DIR}/fcgi_utils.c
    ${FCGISRV_DIR}/fcgi_worker.c
    ${MODULES_DIR}/service_sign.c
+    ${MODULES_DIR}/service_verify.c
+    ${MODULES_DIR}/service_version.c
 )

 TARGET_LINK_LIBRARIES (${PROJECT_NAME} ${DEP_LIBS})
--- a/Dockerfile.micord
+++ b/Dockerfile.micord
@ -1,4 +1,4 @@
-ARG BUILDER_IMAGE=repo.micord.ru/alt/alt-cprocsp:c10f1-5.0.13000-20240827
+ARG BUILDER_IMAGE=repo.micord.ru/alt/alt-cprocsp:c10f1-5.0.13000-20241129
 ARG RUNTIME_IMAGE=registry.altlinux.org/basealt/altsp:c10f1

 FROM ${BUILDER_IMAGE} AS builder
@ -13,7 +13,8 @@ RUN apt-get update \
       cmake \
       make \
       gcc \
-       gcc10
+       gcc10 \
+       libjson-glib libjson-glib-devel

 WORKDIR /build
 COPY src src
@ -32,7 +33,7 @@ ENV TZ=Europe/Moscow
 COPY entrypoint.sh /entrypoint.sh

 RUN apt-get update \
- && apt-get -y install glib2 libfcgi \
+ && apt-get -y install glib2 libfcgi libjson-glib \
 && apt-get clean \
 && rm -f /var/cache/apt/*.bin \
 && rm -f /var/lib/apt/lists/update* \
@ -50,6 +51,18 @@ COPY --from=builder /build/.build/ervu-sign-module /opt/ervu-sign-module/ervu-si

 EXPOSE 9009

+ARG ESIA_CA_CERT=test_ca_rtk3.cer
+COPY conf/${ESIA_CA_CERT} ${ESIA_CA_CERT} 
+RUN /opt/cprocsp/bin/amd64/certmgr -install -store mRoot -file "${ESIA_CA_CERT}"
+
 USER ervu

+ARG ESIA_CERT="TESIA GOST 2012 new.cer"
+ARG ESIA_CA_CRL=b0fd8eb959d9489d5b7b4c143a06cad7952a0744.crl
+COPY --chown=ervu:ervu conf/${ESIA_CERT} ${ESIA_CERT} 
+COPY --chown=ervu:ervu conf/${ESIA_CA_CRL} ${ESIA_CA_CRL} 
+
+RUN /opt/cprocsp/bin/amd64/certmgr -install -file "${ESIA_CERT}" \
+  && /opt/cprocsp/bin/amd64/certmgr -install -store uCA -crl -file "${ESIA_CA_CRL}"
+
 ENTRYPOINT ["/entrypoint.sh"]
--- a/README.md
+++ b/README.md
@ -1,6 +1,10 @@
 ## Краткое описание

-Модуль предназначен для подписи данных.
+В модуле реализованы следующие функции:
+- подпись данных
+- проверка подписи маркера доступа
+
+### Подпись данных

 Приложение принимает POST-запрос по протоколу FastCGI (Content-Type: text/plain).  
 Подписывает строку, полученную в теле запроса.  
@ -28,6 +32,35 @@ $ curl -v http://127.0.0.1:8080/sign -H "Content-Type: text/plain" -d "test"
 urlSafeBase64_of_signed_string_test
 ```

+### Проверка подписи маркера доступа
+
+Приложение принимает POST-запрос по протоколу FastCGI (Content-Type: text/plain).  
+Проверяет подпись маркера доступа, полученного в теле запроса.  
+В ответе возвращает один из следующих статус-кодов:
+- 200 OK - подпись валидна
+- 401 Unauthorized - подпись невалидна (в теле ответа возвращается код ошибки от криптопровайдера)
+- 500 Internal Server Error - внутренняя ошибка сервера 
+
+Пример выполнения запроса:  
+```
+$ curl -v http://127.0.0.1:8080/verify -H "Content-Type: text/plain" -d "some_valid_access_token"
+*   Trying 127.0.0.1:8080...
+* Connected to 127.0.0.1 (127.0.0.1) port 8080
+> POST /sign HTTP/1.1
+> Host: 127.0.0.1:8080
+> User-Agent: curl/8.4.0
+> Accept: */*
+> Content-Type: text/plain
+> Content-Length: 4
+> 
+< HTTP/1.1 200 OK
+< Server: nginx/1.24.0
+< Date: Wed, 16 Oct 2024 09:55:46 GMT
+< Transfer-Encoding: chunked
+< Connection: keep-alive
+< 
+```
+
 ## Сборка из исходников

 Инструкции по сборке из исходников см. "Инструкция по сборке.md"
@ -46,8 +79,9 @@ cmake -DCONFIG_NAME=/opt/ervu-sign-module.conf ..

 Приложение настраивается в конфигурационном файле, заданном на этапе сборки (по умолчанию, /etc/ervu-sign-module.conf).  

- В секции **\[main\]** задать количество воркеров  
-worker_processes = 10 *\# значение по умолчанию: 10*
+- В секции **\[main\]** задать общие настройки:  
+worker_processes = 10 *\# количество воркеров (значение по умолчанию: 10)*  
+cp_file = libcapi20.so *\# путь до файла библиотеки криптопровайдера*  

 - В секции **\[fcgi\]** задать настройки fcgi-сервера:  
 fcgi_listen_port = 9009 *\# значение по умолчанию: 9009, должно совпадать со значением в nginx.conf*  
@ -55,8 +89,10 @@ fcgi_listen_host = 127.0.0.1 *\# значение по умолчанию: 127.0
 fcgi_thread_pool_size = 1 *\# значение по умолчанию: 1*  

 - В секции **\[sign\]** задать настройки модуля подписания:  
-location = /sign *\# значение по умолчанию: /sign, должно совпадать со значением в nginx.conf*  
-cp_file = libcapi20.so *\# путь до файла библиотеки криптопровайдера*  
-signer_subject = signer@example.ru *\# email, ИНН, СНИЛС или любая другая строка из свойства контейнера «Субъект»*  
-pin = \*\*\*\* *\# пароль от контейнера*
+location = /sign *\# значение по умолчанию: /sign*  
+sign_cert_thumbprint = sha1_thumbprint_of_signer_cert *\# SHA1 отпечаток сертификата, которым ИС подписывает секрет*  
+sign_cert_password = \*\*\*\* *\# пароль от контейнера*

+- В секции **\[verify\]** задать настройки проверки подписи маркера доступа:  
+location = /verify *\# значение по умолчанию: /verify*  
+esia_cert_thumbprint = sha1_thumbprint_of_esia_cert *\# SHA1 отпечаток сертификата ЕСИА*  
--- a/conf/TESIA
+++ b/conf/TESIA
--- a/conf/b0fd8eb959d9489d5b7b4c143a06cad7952a0744.crl
+++ b/conf/b0fd8eb959d9489d5b7b4c143a06cad7952a0744.crl
--- a/conf/ervu-sign-module.conf.example
+++ b/conf/ervu-sign-module.conf.example
@ -1,5 +1,6 @@
 [main]
 #worker_processes = 10
+cp_file = /opt/cprocsp/lib/amd64/libcapi20.so

 [fcgi]
 fcgi_listen_port = 9009
@ -8,6 +9,9 @@ fcgi_listen_host = 127.0.0.1

 [sign]
 #location = /sign
-cp_file = /opt/cprocsp/lib/amd64/libcapi20.so
-signer_subject = signer@example.ru
-pin = ****
+sign_cert_thumbprint = 
+sign_cert_password  = ****
+
+[verify]
+#location = /verify
+esia_cert_thumbprint = 
--- a/conf/nginx-docker.conf
+++ b/conf/nginx-docker.conf
@ -2,7 +2,7 @@ server {
    listen       80;
    server_name  localhost;

-    location = /sign {
+    location / {
        fastcgi_pass  ervu-sign-module:9009;
        include fastcgi_params;
    }
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@ -35,7 +35,7 @@ http {
        listen       80;
        server_name  localhost;

-		location = /sign {
+		location / {
 			fastcgi_pass  localhost:9009;
 			include fastcgi_params;
 		}
--- a/conf/test_ca_rtk3.cer
+++ b/conf/test_ca_rtk3.cer
@ -0,0 +1,36 @@
+-----BEGIN CERTIFICATE-----
+MIIGLTCCBdqgAwIBAgIRAtGQqQCIsFiWS3yUT9DfFhcwCgYIKoUDBwEBAwIwggGB
+MRUwEwYFKoUDZAQSCjc3MDcwNDkzODgxGDAWBgUqhQNkARINMTAyNzcwMDE5ODc2
+NzELMAkGA1UEBhMCUlUxKTAnBgNVBAgMIDc4INCh0LDQvdC60YIt0J/QtdGC0LXR
+gNCx0YPRgNCzMSYwJAYDVQQHDB3QodCw0L3QutGCLdCf0LXRgtC10YDQsdGD0YDQ
+szGBnjCBmwYDVQQJDIGT0LzRg9C90LjRhtC40L/QsNC70YzQvdGL0Lkg0L7QutGA
+0YPQsyDQodC80L7Qu9GM0L3QuNC90YHQutC+0LUg0JLQnS7QotCV0KAu0JMuLCDQ
+odC40L3QvtC/0YHQutCw0Y8g0L3QsNCx0LXRgNC10LbQvdCw0Y8sINC00L7QvCAx
+NCwg0LvQuNGC0LXRgNCwINCQMSYwJAYDVQQKDB3Qn9CQ0J4gItCg0L7RgdGC0LXQ
+u9C10LrQvtC8IjElMCMGA1UEAwwc0KLQtdGB0YLQvtCy0YvQuSDQo9CmINCg0KLQ
+mjAeFw0yMzA5MjUxMDA3MjJaFw0zODA5MjUxMDA3MjJaMIIBgTEVMBMGBSqFA2QE
+Ego3NzA3MDQ5Mzg4MRgwFgYFKoUDZAESDTEwMjc3MDAxOTg3NjcxCzAJBgNVBAYT
+AlJVMSkwJwYDVQQIDCA3OCDQodCw0L3QutGCLdCf0LXRgtC10YDQsdGD0YDQszEm
+MCQGA1UEBwwd0KHQsNC90LrRgi3Qn9C10YLQtdGA0LHRg9GA0LMxgZ4wgZsGA1UE
+CQyBk9C80YPQvdC40YbQuNC/0LDQu9GM0L3Ri9C5INC+0LrRgNGD0LMg0KHQvNC+
+0LvRjNC90LjQvdGB0LrQvtC1INCS0J0u0KLQldCgLtCTLiwg0KHQuNC90L7Qv9GB
+0LrQsNGPINC90LDQsdC10YDQtdC20L3QsNGPLCDQtNC+0LwgMTQsINC70LjRgtC1
+0YDQsCDQkDEmMCQGA1UECgwd0J/QkNCeICLQoNC+0YHRgtC10LvQtdC60L7QvCIx
+JTAjBgNVBAMMHNCi0LXRgdGC0L7QstGL0Lkg0KPQpiDQoNCi0JowZjAfBggqhQMH
+AQEBATATBgcqhQMCAiMBBggqhQMHAQECAgNDAARASD1IrLJ64NR5ZKV3lu00YpyS
+A7W9tOU/DUjlpjKHcqAsDml/B/XX26zG7KocnXLuTaJLR3c7j2FJkRVTTI20JaOC
+AiAwggIcMA4GA1UdDwEB/wQEAwIBhjAdBgNVHQ4EFgQUsP2OuVnZSJ1be0wUOgbK
+15UqB0QwEgYDVR0TAQH/BAgwBgEB/wIBADAlBgNVHSAEHjAcMAYGBFUdIAAwCAYG
+KoUDZHEBMAgGBiqFA2RxAjCCAToGBSqFA2RwBIIBLzCCASsMMiLQmtGA0LjQv9GC
+0L7Qn9GA0L4gQ1NQIDQuMCBSNCIgKNCy0LXRgNGB0LjRjyA0LjApDFMi0KPQtNC+
+0YHRgtC+0LLQtdGA0Y/RjtGJ0LjQuSDRhtC10L3RgtGAICLQmtGA0LjQv9GC0L7Q
+n9GA0L4g0KPQpiIg0LLQtdGA0YHQuNC4IDIuMAxP0KHQtdGA0YLQuNGE0LjQutCw
+0YIg0YHQvtC+0YLQstC10YLRgdGC0LLQuNGPIOKEliDQodCkLzEyNC0zOTcxINC+
+0YIgMTUuMDEuMjAyMQxP0KHQtdGA0YLQuNGE0LjQutCw0YIg0YHQvtC+0YLQstC1
+0YLRgdGC0LLQuNGPIOKEliDQodCkLzEyOC00Mzc2INC+0YIgMjguMTAuMjAyMjA9
+BgUqhQNkbwQ0DDIi0JrRgNC40L/RgtC+0J/RgNC+IENTUCA0LjAgUjQiICjQstC1
+0YDRgdC40Y8gNC4wKTARBgkrBgEEAYI3FAIEBAwCQ0EwEgYJKwYBBAGCNxUBBAUC
+AwIAAjAMBgUqhQNkcgQDAgEAMAoGCCqFAwcBAQMCA0EAg7WnK+Nxo9wQGY2ZtVGA
+EP/KUJNPKWUYOOXk3FHJju/fntsd1kqcs3GkWEfFlrOtg309uRvLwaNc0C/AkEam
+Ng==
+-----END CERTIFICATE-----
--- a/src/fcgisrv/fcgi_map.c
+++ b/src/fcgisrv/fcgi_map.c
@ -101,3 +101,14 @@ fcgi_handler_map_get(fcgi_handler_map_t* map, char* path)

    return handler;
 }
+
+
+void
+fcgi_handler_map_clear(fcgi_handler_map_t* map)
+{
+    if (map == NULL) return;
+    
+    for (size_t i = 0; i < map->num; ++i) {
+        fcgi_map_item_clear(&map->locations[i]);
+    }
+}
--- a/src/fcgisrv/fcgi_server.c
+++ b/src/fcgisrv/fcgi_server.c
@ -230,6 +230,15 @@ fcgi_register_handler(HFcgi hfcgi, char* path, fcgi_handler_t* handler)
 }


+static void
+fcgi_unregister_handlers(HFcgi hfcgi)
+{
+    if (hfcgi == NULL) return;
+
+    fcgi_handler_map_clear(&hfcgi->handler_map);
+}
+
+
 int
 fcgi_run_server(HFcgi hfcgi)
 {
@ -299,6 +308,7 @@ fcgi_dispose_server(HFcgi hfcgi)
 {
    LOG_TRACE("fcgi_dispose_server enter");

+    fcgi_unregister_handlers(hfcgi);
    free(hfcgi);

    LOG_TRACE("fcgi_dispose_server exit");
--- a/src/fcgisrv/fcgi_server_internal.h
+++ b/src/fcgisrv/fcgi_server_internal.h
@ -66,5 +66,6 @@ void fcgi_server_thread_pool_dispose(fcgi_thread_pool_t* thread_pool);

 int fcgi_handler_map_set(fcgi_handler_map_t* map, char* path, fcgi_handler_t* handler);
 fcgi_handler_t* fcgi_handler_map_get(fcgi_handler_map_t* map, char* path);
+void fcgi_handler_map_clear(fcgi_handler_map_t* map);

 #endif // FCGI_SERVER_INTERNAL_H_INCLUDED
--- a/src/fcgisrv/fcgi_utils.c
+++ b/src/fcgisrv/fcgi_utils.c
@ -17,6 +17,57 @@ fcgi_get_content_length(const FCGX_Request* request)
 }


+fcgi_handler_status_t
+check_content_length(int content_length, int client_max_body_size)
+{
+    LOG_TRACE("check_content_length");
+
+    if (content_length > 0 && content_length <= client_max_body_size) {
+        LOG_DEBUG("Content-Length is ok");
+        return HANDLER_SUCCESS;
+    }
+
+    if (content_length == 0) {
+        LOG_DEBUG("Content-Length == 0, so there is no body");
+        return HANDLER_HTTP_OK;
+    }
+
+    if (content_length < 0) {
+        LOG_WARN("Content-Length < 0 (%d)", content_length);
+        return HANDLER_HTTP_BAD_REQUEST;
+    }
+
+    /* (content_length > client_max_body_size) */
+    LOG_WARN("Content-Length (%d) is too large (> %d)",
+                content_length,
+                client_max_body_size);
+    return HANDLER_HTTP_REQUEST_ENTITY_TOO_LARGE;
+}
+
+
+fcgi_handler_status_t 
+check_content_type(const FCGX_Request* request, const char* acceptable_content_type)
+{
+    LOG_TRACE("check_content_type");
+
+    const char* content_type = FCGX_GetParam(FCGI_PARAM_NAME_CONTENT_TYPE, request->envp);
+    if (content_type == NULL) {
+        LOG_ERROR("Could not get FCGI param: "FCGI_PARAM_NAME_CONTENT_TYPE);
+        return HANDLER_HTTP_BAD_REQUEST;
+    }
+
+    if (strcmp(content_type, acceptable_content_type) == 0) {
+        LOG_DEBUG("Content-Type is ok");
+        return HANDLER_SUCCESS;
+    }
+
+    LOG_WARN("Content-Type is not acceptable, '%s' (!= '%s')", 
+                content_type, acceptable_content_type);
+
+    return HANDLER_HTTP_NOT_ACCEPTABLE;
+}
+
+
 char*
 fcgi_request_get_param(const FCGX_Request* request, const char* name, /*out*/ bool* err)
 {
@ -45,6 +96,40 @@ error:
 }


+fcgi_handler_status_t
+fcgi_request_load_data(const FCGX_Request* request, int content_length, char** content)
+{
+    LOG_TRACE("fcgi_request_load_data enter");
+
+    char* data = malloc(content_length + 1);
+    if (data == NULL) {
+        LOG_ERROR("Could not allocate memory for request body (%d bytes)", content_length + 1);
+        return HANDLER_ERROR;
+    }
+
+    int actual_content_length = FCGX_GetStr(data, content_length, request->in);
+
+    if (actual_content_length != content_length) {
+        LOG_ERROR("fcgi_request_load_data: "
+                  "actual_content_length(%d) != content_length(%d); content: '%.*s'",
+                  actual_content_length, content_length,
+                  actual_content_length, data);
+        free(data);
+        return HANDLER_HTTP_BAD_REQUEST;
+    }
+
+    data[content_length] = '\0';
+    *content = data;
+
+    LOG_DEBUG("content_length: %d", content_length);
+    LOG_DEBUG("content: '%s'", *content);
+
+    LOG_TRACE("fcgi_request_load_data exit");
+
+    return HANDLER_SUCCESS;
+}
+
+
 fcgi_handler_status_t
 fcgi_printf_str(const FCGX_Request* request, const char* response, int response_len)
 {
--- a/src/fcgisrv/fcgi_utils.h
+++ b/src/fcgisrv/fcgi_utils.h
@ -56,6 +56,25 @@ char* fcgi_request_get_param(const FCGX_Request* request, const char* name, bool
 int
 fcgi_get_content_length(const FCGX_Request* request);

+/**
+ * Returns: HANDLER_SUCCESS, HANDLER_HTTP_OK (no body), HANDLER_HTTP_BAD_REQUEST, 
+ * HANDLER_HTTP_REQUEST_ENTITY_TOO_LARGE, HANDLER_ERROR
+*/
+fcgi_handler_status_t
+check_content_length(int content_length, int client_max_body_size);
+
+/**
+ * Returns: HANDLER_SUCCESS, HANDLER_HTTP_BAD_REQUEST, HANDLER_HTTP_NOT_ACCEPTABLE
+*/
+fcgi_handler_status_t 
+check_content_type(const FCGX_Request* request, const char* acceptable_content_type);
+
+/**
+ * Returns: HANDLER_SUCCESS, HANDLER_HTTP_BAD_REQUEST, HANDLER_ERROR
+*/
+fcgi_handler_status_t
+fcgi_request_load_data(const FCGX_Request* request, int content_length, char** content);
+

 fcgi_handler_status_t
 fcgi_printf_str(const FCGX_Request* request, const char* response, int response_len);
@ -70,6 +89,10 @@ fcgi_printf_header(const FCGX_Request* request, const char* name, const char* va

 #define CRLF                                            "\r\n"

+#define FCGI_200_RESPONSE_FORMAT \
+        "Status: 200 OK"                                CRLF\
+                                                        CRLF
+
 #define FCGI_400_RESPONSE_FORMAT \
        "Status: 400 Bad Request"                       CRLF\
        "Content-type: text/plain"                      CRLF\
@ -123,6 +146,13 @@ typedef fcgi_handler_status_t (*fcgi_request_handler_pt)(const FCGX_Request* req
 typedef fcgi_request_handler_pt (*FCGI_REQUEST_FINALIZE_HANDLER)(int rc);


+static inline fcgi_handler_status_t
+fcgi_200_ok_handler(const FCGX_Request* request, void* ctx __attribute__((unused)))
+{
+    LOG_INFO("response status: '200 OK'");
+    return FCGI_CHECK_PRINTF_STATUS(request, FCGI_200_RESPONSE_FORMAT, 200);
+}
+
 static inline fcgi_handler_status_t
 fcgi_400_bad_request_handler(const FCGX_Request* request, void* ctx __attribute__((unused)))
 {
--- a/src/main_conf.c
+++ b/src/main_conf.c
@ -5,6 +5,7 @@

 #define MAIN_CONF_SECTION               "main"
 #define MAIN_CONF_KEY_WORKER_PROCESSES  "worker_processes"
+#define MAIN_CONF_KEY_CP_FILE           "cp_file"

 /* default configuration values: */
 static const int FCGI_CONF_DEFAULT_WORKER_PROCESSES = 10;
@ -40,6 +41,14 @@ main_conf_load(main_conf_t* conf, const char *filename, const conf_file_context_
            CONF_FILE_VALUE_POSITIVE_INT,
            &FCGI_CONF_DEFAULT_WORKER_PROCESSES
        },
+        {
+            MAIN_CONF_SECTION,
+            MAIN_CONF_KEY_CP_FILE,
+            &(conf->cp_file),
+            CONF_FILE_VALUE_STRING,
+            CONF_FILE_VALUE_NONE,
+            NULL
+        },
    };

    if (conf_file_load_values(conf_file, fields, sizeof(fields) / sizeof(conf_file_field_t))) {
@ -70,6 +79,7 @@ main_conf_clear(main_conf_t* conf)
        return;
    }

+    free(conf->cp_file);
    free(conf->conf_file);
    memset(conf, 0, sizeof(main_conf_t));
 }
--- a/src/main_conf.h
+++ b/src/main_conf.h
@ -5,6 +5,7 @@

 typedef struct main_conf_s {
    int                 worker_processes;
+    char                *cp_file;                   /* файл криптопровайдера */
    char                *conf_file;
 } main_conf_t;

--- a/src/modules/service_sign.c
+++ b/src/modules/service_sign.c
@ -6,9 +6,8 @@

 #define SIGN_CONF_SECTION                   "sign"
 #define SIGN_CONF_KEY_LOCATION              "location"
-#define SIGN_CONF_KEY_CP_FILE       "cp_file"
-#define SIGN_CONF_KEY_SIGNER        "signer_subject"
-#define SIGN_CONF_KEY_PIN           "pin"
+#define SIGN_CONF_KEY_SIGN_CERT_THUMBPRINT  "sign_cert_thumbprint"
+#define SIGN_CONF_KEY_SIGN_CERT_PASSWORD    "sign_cert_password"

 #define FCGI_OK_RESPONSE_FORMAT \
        "Content-type: text/plain"                      CRLF\
@ -18,7 +17,7 @@
 static const str_t  SIGN_CONF_DEFAULT_LOCATION  = str_t_const("/sign");

 static const int    CLIENT_MAX_BODY_SIZE        = 4096;
-static const str_t  ACCEPTABLE_CONTENT_TYPE     = str_t_const("text/plain");
+static const char*  ACCEPTABLE_CONTENT_TYPE     = "text/plain";

 typedef struct sign_service_s {
    const sign_conf_t        *conf;
@ -39,13 +38,6 @@ static void fcgi_sign_request_clear(fcgi_sign_request_t *req_info);

 static fcgi_request_handler_pt fcgi_request_finalize_handler(fcgi_handler_status_t status);

-static fcgi_handler_status_t check_content_length(int content_length);
-
-static fcgi_handler_status_t check_content_type(const FCGX_Request* request);
-
-static fcgi_handler_status_t fcgi_request_load_data(const FCGX_Request* request, 
-                                                        int content_length, char** content);
-
 static int sign_content(const sign_service_t *hsign, fcgi_sign_request_t *req_info);

 int 
@ -66,24 +58,16 @@ sign_conf_load(sign_conf_t *conf, const conf_file_context_t conf_file)
        },
        { 
            SIGN_CONF_SECTION,
-            SIGN_CONF_KEY_CP_FILE,
-            &(conf->cp_file),
-            CONF_FILE_VALUE_STRING,
+            SIGN_CONF_KEY_SIGN_CERT_THUMBPRINT,
+            &(conf->sign_cert_thumbprint),
+            CONF_FILE_VALUE_STRT,
            CONF_FILE_VALUE_NONE,
            NULL 
        },
        { 
            SIGN_CONF_SECTION,
-            SIGN_CONF_KEY_SIGNER,
-            &(conf->signer),
-            CONF_FILE_VALUE_STRING,
-            CONF_FILE_VALUE_NONE,
-            NULL 
-        },
-        { 
-            SIGN_CONF_SECTION,
-            SIGN_CONF_KEY_PIN,
-            &(conf->pin),
+            SIGN_CONF_KEY_SIGN_CERT_PASSWORD,
+            &(conf->sign_cert_password),
            CONF_FILE_VALUE_STRT,
            CONF_FILE_VALUE_PSWD,
            NULL 
@ -110,14 +94,13 @@ sign_conf_clear(sign_conf_t *conf)

    if (conf == NULL) return;

-    if (conf->pin.data != 0) {
-        explicit_bzero(conf->pin.data, conf->pin.len);
+    if (conf->sign_cert_password.data != 0) {
+        explicit_bzero(conf->sign_cert_password.data, conf->sign_cert_password.len);
    }
-    str_t_clear(&conf->pin);
+    str_t_clear(&conf->sign_cert_password);

    str_t_clear(&conf->location);
-    free(conf->cp_file);
-    free(conf->signer);
+    str_t_clear(&conf->sign_cert_thumbprint);

    memset(conf, 0, sizeof(sign_conf_t));
 }
@ -135,12 +118,9 @@ sign_service_create(const sign_conf_t *conf)

    hsign->conf = conf;

-    if (!cryptopro_init(conf->cp_file)) {
-        LOG_ERROR("Could not init Cryptographic Provider");
-        goto error;
-    }
-
-    cryptopro_context_set(&hsign->cryptopro_ctx, conf->signer, &conf->pin);
+    cryptopro_context_set(&hsign->cryptopro_ctx, 
+                            &conf->sign_cert_thumbprint, 
+                            &conf->sign_cert_password);

    LOG_TRACE("sign_service_create exit");
    return (HSign)hsign;
@ -177,12 +157,12 @@ fcgi_sign_handler(FCGX_Request* request, void* ctx)

    req_info.content_length = fcgi_get_content_length(request);

-    status = check_content_length(req_info.content_length);
+    status = check_content_length(req_info.content_length, CLIENT_MAX_BODY_SIZE);
    if (status != HANDLER_SUCCESS) {
        goto exit;
    }

-    status = check_content_type(request);
+    status = check_content_type(request, ACCEPTABLE_CONTENT_TYPE);
    if (status != HANDLER_SUCCESS) {
        goto exit;
    }
@ -268,90 +248,6 @@ fcgi_request_finalize_handler(fcgi_handler_status_t status)
    return handler;
 }

-static fcgi_handler_status_t
-check_content_length(int content_length)
-{
-    LOG_TRACE("check_content_length");
-
-    if (content_length > 0 && content_length <= CLIENT_MAX_BODY_SIZE) {
-        LOG_DEBUG("Content-Length is ok");
-        return HANDLER_SUCCESS;
-    }
-
-    if (content_length == 0) {
-        LOG_DEBUG("Content-Length == 0, so there is nothing to sign");
-        return HANDLER_HTTP_OK;
-    }
-
-    if (content_length < 0) {
-        LOG_WARN("Content-Length < 0 (%d)", content_length);
-        return HANDLER_HTTP_BAD_REQUEST;
-    }
-
-    if (content_length > CLIENT_MAX_BODY_SIZE) {
-        LOG_WARN("Content-Length (%d) is too large (> %d)",
-                  content_length,
-                  CLIENT_MAX_BODY_SIZE);
-        return HANDLER_HTTP_REQUEST_ENTITY_TOO_LARGE;
-    }
-
-    return HANDLER_ERROR;
-}
-
-static fcgi_handler_status_t 
-check_content_type(const FCGX_Request* request)
-{
-    LOG_TRACE("check_content_type");
-
-    const char* content_type = FCGX_GetParam(FCGI_PARAM_NAME_CONTENT_TYPE, request->envp);
-    if (content_type == NULL) {
-        LOG_ERROR("Could not get FCGI param: "FCGI_PARAM_NAME_CONTENT_TYPE);
-        return HANDLER_HTTP_BAD_REQUEST;
-    }
-
-    if (strncmp(content_type, ACCEPTABLE_CONTENT_TYPE.data, ACCEPTABLE_CONTENT_TYPE.len) == 0) {
-        LOG_DEBUG("Content-Type is ok");
-        return HANDLER_SUCCESS;
-    }
-
-    LOG_WARN("Content-Type is not acceptable, '%s'", content_type);
-
-    return HANDLER_HTTP_NOT_ACCEPTABLE;
-}
-
-static fcgi_handler_status_t
-fcgi_request_load_data(const FCGX_Request* request, int content_length, char** content)
-{
-    LOG_TRACE("fcgi_request_load_data enter");
-
-    char* data = malloc(content_length + 1);
-    if (data == NULL) {
-        LOG_ERROR("Could not allocate memory for request body (%d bytes)", content_length + 1);
-        return HANDLER_ERROR;
-    }
-
-    int actual_content_length = FCGX_GetStr(data, content_length, request->in);
-
-    if (actual_content_length != content_length) {
-        LOG_ERROR("fcgi_request_load_data: "
-                  "actual_content_length(%d) != content_length(%d); content: '%.*s'",
-                  actual_content_length, content_length,
-                  actual_content_length, data);
-        free(data);
-        return HANDLER_HTTP_BAD_REQUEST;
-    }
-
-    data[content_length] = '\0';
-    *content = data;
-
-    LOG_DEBUG("content_length: %d", content_length);
-    LOG_DEBUG("content: '%s'", *content);
-
-    LOG_TRACE("fcgi_request_load_data exit");
-
-    return HANDLER_SUCCESS;
-}
-
 static int
 sign_content(const sign_service_t *hsign, fcgi_sign_request_t *req_info)
 {
--- a/src/modules/service_sign.h
+++ b/src/modules/service_sign.h
@ -11,10 +11,8 @@ typedef struct sign_service_t* HSign;
 typedef struct sign_conf_s {
    str_t               location;

-    char                *cp_file;                   /* файл криптопровайдера */
-
-    char                *signer;                    /* субъект контейнера */
-    str_t               pin;                        /* pin-код от контейнера */
+    str_t               sign_cert_thumbprint;       /* SHA1 отпечаток сертификата ИС */
+    str_t               sign_cert_password;         /* пароль от контейнера */

 } sign_conf_t;

--- a/src/modules/service_verify.c
+++ b/src/modules/service_verify.c
@ -0,0 +1,307 @@
+#include "service_verify.h"
+
+#include "fcgisrv/fcgi_utils.h"
+
+#include "utils/base64.h"
+#include "utils/cryptopro.h"
+#include "utils/jwt.h"
+
+
+#define VERIFY_CONF_SECTION         "verify"
+#define VERIFY_CONF_KEY_LOCATION    "location"
+#define VERIFY_CONF_KEY_THUMBPRINT  "esia_cert_thumbprint"
+
+#define FCGI_401_BAD_SIGNATURE_RESPONSE_FORMAT \
+        "Status: 401 Unauthorized"                      CRLF\
+        "Content-type: text/plain"                      CRLF\
+                                                        CRLF\
+        "%s"                                            CRLF
+
+static const str_t  VERIFY_CONF_DEFAULT_LOCATION    = str_t_const("/verify");
+
+static const int    CLIENT_MAX_BODY_SIZE            = 8192;
+static const char*  ACCEPTABLE_CONTENT_TYPE         = "text/plain";
+
+
+typedef struct verify_service_s {
+    const verify_conf_t        *conf;
+
+} verify_service_t;
+
+
+typedef struct fcgi_verify_request_s {
+    char                    *content;
+    int                     content_length;
+
+    char                    *verify_error;
+
+} fcgi_verify_request_t;
+
+
+static fcgi_request_handler_pt fcgi_request_finalize_handler(fcgi_handler_status_t status);
+static void fcgi_verify_request_clear(fcgi_verify_request_t *req_info);
+static fcgi_handler_status_t verify_jwt_sign(fcgi_verify_request_t* req_info, 
+                                                const verify_service_t *ctx);
+
+
+int 
+verify_conf_load(verify_conf_t *conf, const conf_file_context_t conf_file)
+{
+    LOG_TRACE("verify_conf_load enter");
+
+    memset(conf, 0, sizeof(verify_conf_t));
+
+    conf_file_field_t fields[] = {
+        {
+            VERIFY_CONF_SECTION,
+            VERIFY_CONF_KEY_LOCATION,
+            &conf->location,
+            CONF_FILE_VALUE_STRT,
+            CONF_FILE_VALUE_LOCATION,
+            &VERIFY_CONF_DEFAULT_LOCATION 
+        },
+        {
+            VERIFY_CONF_SECTION,
+            VERIFY_CONF_KEY_THUMBPRINT,
+            &conf->esia_cert_thumbprint,
+            CONF_FILE_VALUE_STRT,
+            CONF_FILE_VALUE_NONE,
+            NULL 
+        },
+    };
+
+    if (conf_file_load_values(conf_file, fields, sizeof(fields) / sizeof(conf_file_field_t))) {
+        goto error;
+    }
+
+    LOG_TRACE("verify_conf_load exit");
+    return 0;
+
+error:
+    verify_conf_clear(conf);
+    LOG_ERROR("verify_conf_load exit with error");
+    return -1;
+}
+
+void
+verify_conf_clear(verify_conf_t *conf)
+{
+    LOG_TRACE("verify_conf_clear");
+    
+    if (conf == NULL) return;
+
+    str_t_clear(&conf->location);
+    str_t_clear(&conf->esia_cert_thumbprint);
+
+    memset(conf, 0, sizeof(verify_conf_t));
+}
+
+HVerify 
+verify_service_create(const verify_conf_t *conf)
+{
+    LOG_TRACE("verify_service_create enter");
+
+    verify_service_t *hverify = (verify_service_t*) calloc(1, sizeof(verify_service_t));
+    if (hverify == NULL) {
+        LOG_ERROR("Could not allocate memory for HVerify");
+        goto error;
+    }
+
+    hverify->conf = conf;
+
+    LOG_TRACE("verify_service_create exit");
+    return (HVerify)hverify;
+
+error:
+    LOG_ERROR("verify_service_create exit with error");
+    return NULL;
+}
+
+void 
+verify_service_free(HVerify hverify)
+{
+    LOG_TRACE("verify_service_free");
+
+    verify_service_t *ctx = (verify_service_t *) hverify;
+
+    if (ctx == NULL) return;
+
+    free(ctx);
+}
+
+fcgi_handler_status_t 
+fcgi_verify_handler(FCGX_Request* request, void* ctx)
+{
+    fcgi_handler_status_t status = HANDLER_ERROR;
+    fcgi_verify_request_t req_info = {0};
+
+    LOG_TRACE("fcgi_verify_handler enter");
+
+    if (request == NULL) {
+        LOG_ERROR("fcgi_verify_handler exit with error. Desc: request is NULL");
+        return HANDLER_ERROR;
+    }
+
+    req_info.content_length = fcgi_get_content_length(request);
+
+    status = check_content_length(req_info.content_length, CLIENT_MAX_BODY_SIZE);
+    if (status != HANDLER_SUCCESS) {
+        goto exit;
+    }
+
+    status = check_content_type(request, ACCEPTABLE_CONTENT_TYPE);
+    if (status != HANDLER_SUCCESS) {
+        goto exit;
+    }
+
+    status = fcgi_request_load_data(request, req_info.content_length, &req_info.content);
+    if (status != HANDLER_SUCCESS) {
+        goto exit;
+    }
+
+    status = verify_jwt_sign(&req_info, ctx);
+
+exit:
+    status = fcgi_request_finalize_handler(status)(request, &req_info);
+
+    fcgi_verify_request_clear(&req_info);
+
+    LOG_TRACE("fcgi_verify_handler exit");
+    return status;
+}
+
+static fcgi_handler_status_t 
+fcgi_401_bad_signature_handler(const FCGX_Request* request, void *ctx)
+{
+    LOG_TRACE("fcgi_401_bad_signature_handler");
+
+    const fcgi_verify_request_t *req_info = (fcgi_verify_request_t*) ctx;
+
+    assert(req_info->verify_error != NULL);
+
+    LOG_DEBUG("response status: " FCGI_401_BAD_SIGNATURE_RESPONSE_FORMAT,
+                req_info->verify_error);
+
+    if (FCGX_FPrintF(request->out, FCGI_401_BAD_SIGNATURE_RESPONSE_FORMAT, 
+                        req_info->verify_error) < 0) {
+        LOG_ERROR("FCGX_FPrintF() failed");
+        return HANDLER_ERROR;
+    }
+
+    return HANDLER_SUCCESS;
+}
+
+static fcgi_request_handler_pt
+fcgi_request_finalize_handler(fcgi_handler_status_t status)
+{
+    fcgi_request_handler_pt handler;
+
+    switch (status) {
+    case HANDLER_SUCCESS:
+    case HANDLER_HTTP_OK:
+        handler = fcgi_200_ok_handler;
+        break;
+
+    case HANDLER_HTTP_BAD_REQUEST:
+        handler = fcgi_400_bad_request_handler;
+        break;
+
+    case HANDLER_HTTP_UNAUTHORIZED:
+        handler = fcgi_401_bad_signature_handler;
+        break;
+
+    case HANDLER_HTTP_NOT_ACCEPTABLE:
+        handler = fcgi_406_not_acceptable_handler;
+        break;
+
+    case HANDLER_HTTP_REQUEST_ENTITY_TOO_LARGE:
+        handler = fcgi_413_request_entity_too_large_handler;
+        break;
+
+    case HANDLER_ERROR:
+    default:
+        handler = fcgi_500_internal_server_error_handler;
+        break;
+    }
+
+    return handler;
+}
+
+static void
+fcgi_verify_request_clear(fcgi_verify_request_t *req_info) 
+{
+    LOG_TRACE("fcgi_verify_request_clear");
+
+    free(req_info->content);
+    free(req_info->verify_error);
+
+    memset(req_info, 0, sizeof(fcgi_verify_request_t));
+}
+
+static fcgi_handler_status_t
+verify_jwt_sign(fcgi_verify_request_t* req_info, const verify_service_t *ctx)
+{
+    LOG_TRACE("verify_jwt_sign enter");
+
+    bool is_verified = false;
+
+    str_t jwt = {
+        .data = req_info->content,
+        .len = req_info->content_length
+    };
+    str_t sign = str_t_null;
+    str_t sign_base64 = str_t_null;
+    str_t header = str_t_null;
+    str_t header_base64 = str_t_null;
+    str_t header_payload = str_t_null;
+    str_t alg = str_t_null;
+
+    if (jwt_get_header_payload_and_sign(&jwt, &header_base64, &header_payload, &sign_base64)) {
+        goto error;
+    }
+
+    sign.len = base64_decoded_length(sign_base64.len);
+    sign.data = calloc(1, sign.len + 1);
+    if (sign.data == NULL) {
+        LOG_ERROR("Could not allocate memory for decoded sign (%zd bytes)", sign.len + 1);
+        goto error;
+    }
+    if (decode_base64_url(&sign, &sign_base64)) {
+        LOG_ERROR("Could not decode jwt sign");
+        goto error;
+    }
+
+    header.len = base64_decoded_length(header_base64.len);
+    header.data = calloc(1, header.len + 1);
+    if (header.data == NULL) {
+        LOG_ERROR("Could not allocate memory for decoded header (%zd bytes)", header.len + 1);
+        goto error;
+    }
+    if (decode_base64_url(&header, &header_base64)) {
+        LOG_ERROR("Could not decode jwt header");
+        goto error;
+    }
+
+    if (jwt_get_alg_from_header(&header, &alg)) {
+        goto error;
+    }
+
+    if (cryptopro_verify(&ctx->conf->esia_cert_thumbprint, &alg, &header_payload, &sign, 
+                            &is_verified, &req_info->verify_error)) {
+        goto error;
+    }
+
+    str_t_clear(&sign);
+    str_t_clear(&header);
+    str_t_clear(&alg);
+
+    LOG_TRACE("verify_jwt_sign exit");
+    return is_verified ? HANDLER_SUCCESS : HANDLER_HTTP_UNAUTHORIZED;
+
+error:
+    str_t_clear(&sign);
+    str_t_clear(&header);
+    str_t_clear(&alg);
+    LOG_TRACE("verify_jwt_sign exit with error");
+    return HANDLER_ERROR;    
+}
--- a/src/modules/service_verify.h
+++ b/src/modules/service_verify.h
@ -0,0 +1,25 @@
+#ifndef SERVICE_VERIFY_H_INCLUDED
+#define SERVICE_VERIFY_H_INCLUDED
+
+#include "fcgisrv/fcgi_server.h"
+
+#include "utils/conf_file_context.h"
+#include "utils/str_t.h"
+
+typedef struct verify_service_t* HVerify;
+
+typedef struct verify_conf_s {
+    str_t               location;
+    str_t               esia_cert_thumbprint;
+
+} verify_conf_t;
+
+int verify_conf_load(verify_conf_t *conf, const conf_file_context_t conf_file);
+void verify_conf_clear(verify_conf_t *conf);
+
+HVerify verify_service_create(const verify_conf_t *conf);
+void verify_service_free(HVerify hverify);
+
+fcgi_handler_status_t fcgi_verify_handler(FCGX_Request* request, void* ctx);
+
+#endif // SERVICE_VERIFY_H_INCLUDED
--- a/src/modules/service_version.c
+++ b/src/modules/service_version.c
@ -0,0 +1,58 @@
+#include "service_version.h"
+
+#include "version.h"
+
+#include "fcgisrv/fcgi_utils.h"
+
+#include "utils/logger.h"
+
+#include <assert.h>
+
+
+#define VERSION_TEXT \
+        "Content-type: text/plain" CRLF CRLF \
+        APP_VERSION CRLF
+
+static const str_t VERSION_CONF_DEFAULT_LOCATION = str_t_const("/version");
+
+
+int
+version_conf_load(version_conf_t *conf)
+{
+    LOG_TRACE("version_conf_load enter");
+
+    assert(conf != NULL);
+
+    conf->location = &VERSION_CONF_DEFAULT_LOCATION;
+
+    LOG_TRACE("version_conf_load exit");
+    return 0;
+}
+
+void
+version_conf_clear(version_conf_t *conf)
+{
+    LOG_TRACE("version_conf_clear enter");
+
+    if (conf != NULL) {
+        conf->location = NULL;
+    }
+    
+    LOG_TRACE("version_conf_clear exit");
+}
+
+fcgi_handler_status_t
+fcgi_version_handler(FCGX_Request* request, void* ctx)
+{
+    LOG_TRACE("fcgi_version_handler enter");
+
+    if (request == NULL) {
+        LOG_ERROR("fcgi_version_handler failed: request is NULL");
+        return HANDLER_ERROR;
+    }
+
+    FCGX_FPrintF(request->out, VERSION_TEXT);
+
+    LOG_TRACE("fcgi_version_handler exit");
+    return HANDLER_SUCCESS;
+}
--- a/src/modules/service_version.h
+++ b/src/modules/service_version.h
@ -0,0 +1,22 @@
+#ifndef SERVICE_VERSION_H_INCLUDED
+#define SERVICE_VERSION_H_INCLUDED
+
+
+#include "fcgisrv/fcgi_server.h"
+
+#include "utils/str_t.h"
+
+
+typedef struct version_conf_s {
+    const str_t *location;
+
+} version_conf_t;
+
+
+int version_conf_load(version_conf_t *conf);
+void version_conf_clear(version_conf_t *conf);
+
+fcgi_handler_status_t fcgi_version_handler(FCGX_Request* request, void* ctx);
+
+
+#endif // SERVICE_VERSION_H_INCLUDED
--- a/src/service_manager.c
+++ b/src/service_manager.c
@ -1,5 +1,7 @@
 #include "service_manager.h"

+#include "utils/cryptopro.h"
+
 #include <assert.h>


@ -159,6 +161,16 @@ service_manager_load_conf(const char* config_file_name, service_manager_conf_t*
        goto error;
    }
    
+    if (verify_conf_load(&services_cf->verify_cf, conf_file)) {
+        LOG_ERROR("Verify service configuraton loading failed");
+        goto error;
+    }
+
+    if (version_conf_load(&services_cf->version_cf)) {
+        LOG_ERROR("Show version service configuraton loading failed");
+        goto error;
+    }
+
    conf_file_close_file(conf_file);

    LOG_TRACE("service_manager_load_conf exit with success");
@ -178,7 +190,9 @@ service_manager_clear_conf(service_manager_conf_t* services_cf)
 {
    assert(services_cf != NULL);

+    version_conf_clear(&services_cf->version_cf);
    sign_conf_clear(&services_cf->sign_cf);
+    verify_conf_clear(&services_cf->verify_cf);
    fcgi_clear_conf(&services_cf->fcgi_cf);
    main_conf_clear(&services_cf->main_cf);
 }
@ -196,6 +210,8 @@ deinit_services(service_manager_t* services)

    sign_service_free(services->hsign);

+    verify_service_free(services->hverify);
+
    LOG_TRACE("deinit_services exit");

    return 0;
@ -217,6 +233,12 @@ init_services(service_manager_t* services, const service_manager_conf_t* service
        goto error;
    }

+    if (!cryptopro_init(services_cf->main_cf.cp_file)) {
+        LOG_ERROR("Could not init Cryptographic Provider");
+        goto error;
+    }
+
+    /* sign service */
    services->hsign = sign_service_create(&services_cf->sign_cf);
    if (services->hsign == NULL) {
        goto error;
@ -228,6 +250,25 @@ init_services(service_manager_t* services, const service_manager_conf_t* service
        goto error;
    }
    
+    /* verify service */
+    services->hverify = verify_service_create(&services_cf->verify_cf);
+    if (services->hverify == NULL) {
+        goto error;
+    }
+
+    if (register_service(services, services_cf, fcgi_verify_handler, services->hverify, 
+                            &services_cf->verify_cf.location)) {
+        LOG_ERROR("Could not register 'verify service'");
+        goto error;
+    }
+
+    /* show version service */
+    if (register_service(services, services_cf, fcgi_version_handler, NULL,
+                            services_cf->version_cf.location)) {
+        LOG_ERROR("Could not register 'show version service'");
+        goto error;
+    }
+
    /* run fastcgi server */
    if (fcgi_run_server(services->hfcgi) != 0) {
        LOG_ERROR("Could not run FastCGI server");
--- a/src/service_manager.h
+++ b/src/service_manager.h
@ -8,6 +8,8 @@
 #include "fcgisrv/fcgi_server.h"

 #include "modules/service_sign.h"
+#include "modules/service_verify.h"
+#include "modules/service_version.h"

 struct service_s;

@ -46,12 +48,15 @@ typedef struct service_manager_conf_s {
    fcgi_conf_t             fcgi_cf;
    main_conf_t             main_cf;
    sign_conf_t             sign_cf;
+    verify_conf_t           verify_cf;
+    version_conf_t          version_cf;

 } service_manager_conf_t;

 typedef struct service_manager_s {
    HFcgi                   hfcgi;
    HSign                   hsign;
+    HVerify                 hverify;

 } service_manager_t;

--- a/src/utils/base64.c
+++ b/src/utils/base64.c
@ -1,5 +1,7 @@
 #include "base64.h"

+#include "logger.h"
+
 #include <assert.h>
 #include <stdint.h>

@ -80,3 +82,88 @@ encode_base64_url(str_t *dst, const str_t *src)
        }
    }
 }
+
+static void
+init_decode_base64_url(unsigned char **table)
+{
+    static unsigned char basis64_url[] = {
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3E, 0xFF, 0xFF,
+    0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xFF, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
+    0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0xFF, 0xFF, 0xFF, 0xFF, 0x3F,
+    0xFF, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
+    0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
+    };
+
+    assert(table != NULL);
+
+    *table = basis64_url;
+}
+
+int
+decode_base64_url(str_t *dst, const str_t *src)
+{
+    uint32_t value = 0;
+    unsigned int c;
+    size_t i;
+    size_t n = 0;
+    uint8_t *p = NULL;
+  
+    assert(dst != NULL && !str_t_is_null(*dst));
+    assert(src != NULL && !str_t_is_null(*src));
+  
+    if ((src->len % 4) == 1) {
+        LOG_ERROR("decode_base64_url failed. Desc: invalid src length (%zd)", src->len);
+        goto error;
+    }
+
+    unsigned char *basis64_url;
+    init_decode_base64_url(&basis64_url);
+
+    p = (uint8_t *) dst->data;
+
+    for (i = 0; i < src->len; i++) {
+        c = (unsigned int) src->data[i];
+
+        if (c < 128 && basis64_url[c] < 64) {
+            value = (value << 6) | basis64_url[c];
+
+            if ((i % 4) == 3) {
+                if (p != NULL) {
+                    p[n] = (value >> 16) & 0xFF;
+                    p[n + 1] = (value >> 8) & 0xFF;
+                    p[n + 2] = value & 0xFF;
+                }
+
+                n += 3;
+                value = 0;
+            }
+        } else {
+            LOG_ERROR("decode_base64_url failed. Desc: invalid character: %c", src->data[i]);
+            goto error;
+        }
+    }
+
+    if ((src->len % 4) == 2) {
+        if (p != NULL) {
+            p[n] = (value >> 4) & 0xFF;
+        }
+        n++;
+    } else if ((src->len % 4) == 3) {
+        if (p != NULL) {
+            p[n] = (value >> 10) & 0xFF;
+            p[n + 1] = (value >> 2) & 0xFF;
+        }
+        n += 2;
+    }
+
+    dst->len = n;
+
+    return 0;
+
+error:
+    LOG_ERROR("decode_base64_url exit with error");
+    return -1;
+}
--- a/src/utils/base64.h
+++ b/src/utils/base64.h
@ -4,7 +4,9 @@
 #include "str_t.h"

 #define base64_encoded_length(len)  (((len + 2) / 3) * 4)
+#define base64_decoded_length(len)  (((len + 3) / 4) * 3)

 void encode_base64_url(str_t *dst, const str_t *src);
+int decode_base64_url(str_t *dst, const str_t *src);

 #endif // BASE64_H
--- a/src/utils/capi.c
+++ b/src/utils/capi.c
@ -26,11 +26,17 @@ capi_function_list_init(library_t *lib, capi_function_list_t *fl)
    LIBRARY_RESOLVE(fl->CryptReleaseContext, lib, "CryptReleaseContext");
    LIBRARY_RESOLVE(fl->CryptSignMessage, lib, "CryptSignMessage");
    LIBRARY_RESOLVE(fl->GetLastError, lib, "GetLastError");
+    LIBRARY_RESOLVE(fl->CryptImportPublicKeyInfo, lib, "CryptImportPublicKeyInfo");
+    LIBRARY_RESOLVE(fl->CryptDestroyKey, lib, "CryptDestroyKey");

 #ifdef UNICODE
    LIBRARY_RESOLVE(fl->CryptSignHash, lib, "CryptSignHashW");
+    LIBRARY_RESOLVE(fl->CryptVerifySignature, lib, "CryptVerifySignatureW");
+    LIBRARY_RESOLVE(fl->CryptAcquireContext, lib, "CryptAcquireContextW");
 #else
    LIBRARY_RESOLVE(fl->CryptSignHash, lib, "CryptSignHashA");
+    LIBRARY_RESOLVE(fl->CryptVerifySignature, lib, "CryptVerifySignatureA");
+    LIBRARY_RESOLVE(fl->CryptAcquireContext, lib, "CryptAcquireContextA");
 #endif // !UNICODE

    return true;
--- a/src/utils/capi.h
+++ b/src/utils/capi.h
@ -124,10 +124,65 @@ DECLARE_FN(WINADVAPI,
            BYTE *pbSignature,
            DWORD *pdwSigLen));

+DECLARE_FN(WINADVAPI,
+           BOOL,
+           CRYPT_VERIFY_SIGNATURE_A,
+           (HCRYPTHASH hHash,
+            CONST BYTE *pbSignature,
+            DWORD dwSigLen,
+            HCRYPTKEY hPubKey,
+            LPCSTR szDescription,
+            DWORD dwFlags));
+
+DECLARE_FN(WINADVAPI,
+           BOOL,
+           CRYPT_VERIFY_SIGNATURE_W,
+           (HCRYPTHASH hHash,
+            CONST BYTE *pbSignature,
+            DWORD dwSigLen,
+            HCRYPTKEY hPubKey,
+            LPCWSTR szDescription,
+            DWORD dwFlags));
+
+DECLARE_FN(WINADVAPI,
+           BOOL,
+           CRYPT_ACQUIRE_CONTEXT_A,
+           (HCRYPTPROV *phProv,
+            LPCSTR pszContainer,
+            LPCSTR pszProvider,
+            DWORD dwProvType,
+            DWORD dwFlags));
+
+DECLARE_FN(WINADVAPI,
+           BOOL,
+           CRYPT_ACQUIRE_CONTEXT_W,
+           (HCRYPTPROV *phProv,
+            LPCSTR pszContainer,
+            LPCSTR pszProvider,
+            DWORD dwProvType,
+            DWORD dwFlags)); 
+
+DECLARE_FN(WINADVAPI,
+            BOOL,
+            CRYPT_IMPORT_PUBLIC_KEY_INFO,
+            (HCRYPTPROV hCryptProv,
+             DWORD dwCertEncodingType,
+             PCERT_PUBLIC_KEY_INFO pInfo,
+             HCRYPTKEY *phKey));
+
+DECLARE_FN(WINADVAPI,
+           BOOL,
+           CRYPT_DESTROY_KEY,
+           (HCRYPTKEY hKey));
+
 #ifdef UNICODE
 #define CRYPT_SIGN_HASH_FN          CRYPT_SIGN_HASH_W_FN
+#define CRYPT_VERIFY_SIGNATURE_FN   CRYPT_VERIFY_SIGNATURE_W_FN
+#define CRYPT_ACQUIRE_CONTEXT_FN    CRYPT_ACQUIRE_CONTEXT_W_FN
 #else
 #define CRYPT_SIGN_HASH_FN          CRYPT_SIGN_HASH_A_FN
+#define CRYPT_VERIFY_SIGNATURE_FN   CRYPT_VERIFY_SIGNATURE_A_FN
+#define CRYPT_ACQUIRE_CONTEXT_FN    CRYPT_ACQUIRE_CONTEXT_A_FN
 #endif // !UNICODE


@ -146,6 +201,11 @@ typedef struct {
    CERT_FIND_CERTIFICATE_IN_STORE_FN CertFindCertificateInStore;
    CERT_GET_CERTIFICATE_CONTEXT_PROPERTY_FN CertGetCertificateContextProperty;
    CERT_SET_CERTIFICATE_CONTEXT_PROPERTY_FN CertSetCertificateContextProperty;
+    CRYPT_VERIFY_SIGNATURE_FN CryptVerifySignature;
+    CRYPT_ACQUIRE_CONTEXT_FN CryptAcquireContext;
+    CRYPT_IMPORT_PUBLIC_KEY_INFO_FN CryptImportPublicKeyInfo;
+    CRYPT_DESTROY_KEY_FN CryptDestroyKey;
+
 } capi_function_list_t;


--- a/src/utils/cryptopro.c
+++ b/src/utils/cryptopro.c
@ -16,7 +16,7 @@ static HCERTSTORE cert_open_store();

 static PCCERT_CONTEXT get_signer_cert(const cryptopro_context_t *ctx, HCERTSTORE hStoreHandle);

-static int set_pin(PCCERT_CONTEXT pSignerCert, const str_t *pin);
+static int set_password(PCCERT_CONTEXT cert_ctx, const str_t *password);

 bool
 cryptopro_init(const char* cp_file)
@ -44,8 +44,8 @@ cryptopro_sign(const cryptopro_context_t *ctx, const str_t *data, /*out*/ str_t
    LOG_TRACE("cryptopro_sign enter");

    assert(ctx != NULL);
-    assert(ctx->signer != NULL);
-    assert(ctx->pin != NULL);
+    assert(!str_t_is_null(*ctx->cert_thumbprint));
+    assert(ctx->password != NULL);
    assert(data != NULL && !str_t_is_null(*data));
    assert(sign != NULL);

@ -209,47 +209,78 @@ cert_open_store()
 }

 static PCCERT_CONTEXT 
-get_signer_cert(const cryptopro_context_t *ctx, HCERTSTORE hStoreHandle)
+get_cert_by_thumbprint(HCERTSTORE hStoreHandle, const str_t* thumbprint)
 {
-    PCCERT_CONTEXT pSignerCert;
+    str_t thumbprint_bin = str_t_null;

-    pSignerCert = cp_function_list.CertFindCertificateInStore(hStoreHandle,
+    LOG_TRACE("get_cert_by_thumbprint enter");
+
+    if (hex_to_bin(thumbprint, &thumbprint_bin)) {
+        goto error;
+    }
+
+    CRYPT_HASH_BLOB hash = {
+        .pbData = (BYTE*)thumbprint_bin.data,
+        .cbData = thumbprint_bin.len
+    };
+
+    PCCERT_CONTEXT cert = cp_function_list.CertFindCertificateInStore(hStoreHandle,
                                                X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
                                                0,
-                                                CERT_FIND_SUBJECT_STR,
-                                                ctx->signer,
+                                                CERT_FIND_HASH,
+                                                &hash,
                                                NULL);
-    if (pSignerCert == NULL) {
+    if (cert == NULL) {
        LOG_ERROR("Could not find certificate in store");
        goto error;
    }

-    if (set_pin(pSignerCert, ctx->pin)) {
+    str_t_clear(&thumbprint_bin);
+
+    LOG_TRACE("get_cert_by_thumbprint exit");
+
+    return cert;
+
+error:
+    str_t_clear(&thumbprint_bin);
+    LOG_ERROR("get_cert_by_thumbprint exit with error");
+    return NULL;
+}
+
+static PCCERT_CONTEXT 
+get_signer_cert(const cryptopro_context_t *ctx, HCERTSTORE hStoreHandle)
+{
+    PCCERT_CONTEXT cert_ctx = get_cert_by_thumbprint(hStoreHandle, ctx->cert_thumbprint);
+    if (cert_ctx == NULL) {
+        goto error;
+    }
+
+    if (set_password(cert_ctx, ctx->password)) {
        goto error;
    }

    LOG_DEBUG("The signer's certificate was found");
-    return pSignerCert;
+    return cert_ctx;

 error:
-    if (pSignerCert) {
-        cp_function_list.CertFreeCertificateContext(pSignerCert);
+    if (cert_ctx) {
+        cp_function_list.CertFreeCertificateContext(cert_ctx);
    }
    LOG_ERROR("get_signer_cert exit with error");
    return NULL;
 }

 static int
-set_pin(PCCERT_CONTEXT pSignerCert, const str_t *pin)
+set_password(PCCERT_CONTEXT cert_ctx, const str_t *password)
 {
    DWORD dwSize;
    if (!cp_function_list.CertGetCertificateContextProperty(
-             pSignerCert, 
+             cert_ctx, 
             CERT_KEY_PROV_INFO_PROP_ID, 
             NULL,
             &dwSize)) {
        LOG_ERROR("Error getting key property");
-        LOG_ERROR("set_pin exit with error. Last error code: 0x%08x", cp_function_list.GetLastError());
+        LOG_ERROR("set_password exit with error. Last error code: 0x%08x", cp_function_list.GetLastError());
        return -1;
    }

@ -257,7 +288,7 @@ set_pin(PCCERT_CONTEXT pSignerCert, const str_t *pin)
    CRYPT_KEY_PROV_INFO* pKeyInfo = (CRYPT_KEY_PROV_INFO*) pKeyInfoBuffer;

    if (!cp_function_list.CertGetCertificateContextProperty(
-            pSignerCert,
+            cert_ctx,
            CERT_KEY_PROV_INFO_PROP_ID,
            pKeyInfo,
            &dwSize)){
@ -272,14 +303,14 @@ set_pin(PCCERT_CONTEXT pSignerCert, const str_t *pin)
    memset(&keyProvParam, 0, sizeof(CRYPT_KEY_PROV_PARAM));
    keyProvParam.dwFlags = 0;
    keyProvParam.dwParam = keyType;
-    keyProvParam.cbData  = (DWORD)(pin->len + 1);
-    keyProvParam.pbData  = (BYTE*) pin->data;
+    keyProvParam.cbData  = (DWORD)(password->len + 1);
+    keyProvParam.pbData  = (BYTE*) password->data;

    pKeyInfo->cProvParam = 1;
    pKeyInfo->rgProvParam = &keyProvParam;

    if (!cp_function_list.CertSetCertificateContextProperty(
-                pSignerCert,
+                cert_ctx,
                CERT_KEY_PROV_INFO_PROP_ID,
                0,
                pKeyInfo)) {
@ -290,6 +321,182 @@ set_pin(PCCERT_CONTEXT pSignerCert, const str_t *pin)
    return 0;

 error:
-    LOG_ERROR("set_pin exit with error. Last error code: 0x%08x", cp_function_list.GetLastError());
+    LOG_ERROR("set_password exit with error. Last error code: 0x%08x", cp_function_list.GetLastError());
    return -1;
 }
+
+static int
+alg_id_from_str(const str_t* alg, /*out*/ ALG_ID* alg_id)
+{
+    LOG_TRACE("alg_id_from_str enter");
+
+    if (strncmp(alg->data, "GOST3410_2012_256", alg->len) == 0) {
+        *alg_id = CALG_GR3411_2012_256;
+    } else if (strncmp(alg->data, "GOST3410_2012_512", alg->len) == 0) {
+        *alg_id = CALG_GR3411_2012_512;
+    } else if (strncmp(alg->data, "RS256", alg->len) == 0) {
+        *alg_id = CALG_SHA_256;
+    } else {
+        LOG_ERROR("Unknown alg: '%.*s'", (int) alg->len, alg->data);
+        LOG_ERROR("alg_id_from_str exit with error");
+        return -1;
+    }
+
+    LOG_TRACE("alg_id_from_str exit");
+    return 0;
+}
+
+static void
+get_verify_error(char** verify_error)
+{
+    LOG_TRACE("get_verify_error enter");
+
+    DWORD err = cp_function_list.GetLastError();
+
+    const char* err_string;
+
+    switch (err) {
+    case NTE_BAD_SIGNATURE:
+        err_string = "sign is invalid: bad signature (0x%08x)";
+        break;
+
+    case NTE_BAD_ALGID:
+        err_string = "sign is invalid: bad alg id (0x%08x)";
+        break;
+    
+    default:
+        err_string = "sign is invalid. Last error code: 0x%08x";
+        break;
+    }
+
+    size_t size = strlen(err_string) + 4 /*error code*/ + 1 /*terminating null*/;
+
+    *verify_error = malloc(size);
+    if (*verify_error == NULL) {
+        LOG_ERROR("get_verify_error failed. Could not allocate memory for error string "
+                    "(%zd bytes)", size);
+        return;
+    }
+
+    int n = snprintf(*verify_error, size, err_string, err);
+    
+    if (n < 0 || (size_t)n >= size) {
+        LOG_ERROR("get_verify_error failed. Error occurred in concatenation err_string");
+        free(*verify_error);
+        *verify_error = NULL;
+        return;
+    }
+
+    LOG_TRACE("get_verify_error exit");
+}
+
+int 
+cryptopro_verify(const str_t* cert_thumbprint, const str_t* alg, const str_t* data, 
+                    const str_t* sign, bool* is_verified, char** verify_error)
+{
+    int rc = -1;
+    HCERTSTORE hStoreHandle = NULL;
+    PCCERT_CONTEXT certificate = NULL;
+    HCRYPTPROV hCryptProv = 0;
+    HCRYPTHASH hash = 0;
+    HCRYPTKEY hPubKey = 0;
+    str_t sign_reversed = str_t_null;
+    ALG_ID alg_id;
+
+    LOG_TRACE("cryptopro_verify enter");
+
+    *is_verified = false;
+
+    if (alg_id_from_str(alg, &alg_id)) {
+        goto exit;
+    }
+
+    if (reverse_sign(sign, &sign_reversed)) {
+        goto exit;
+    }
+
+    hStoreHandle = cert_open_store();
+    if (hStoreHandle == NULL) {
+        goto exit;
+    }
+
+    certificate = get_cert_by_thumbprint(hStoreHandle, cert_thumbprint);
+    if (certificate == NULL) {
+        goto exit;
+    }
+
+    if (!cp_function_list.CryptAcquireContext(&hCryptProv, NULL, CP_KC1_GR3410_2001_PROV,
+                                                PROV_GOST_2001_DH, CRYPT_VERIFYCONTEXT)) {
+        LOG_ERROR("CryptAcquireContext() failed");
+        goto exit;
+    }
+
+    if (!cp_function_list.CryptImportPublicKeyInfo(hCryptProv, X509_ASN_ENCODING,
+                                                    &certificate->pCertInfo->SubjectPublicKeyInfo, 
+                                                    &hPubKey)) {
+        LOG_ERROR("CryptImportPublicKeyInfo() failed");
+        goto exit;
+    }
+
+    if (!cp_function_list.CryptCreateHash(hCryptProv, alg_id, 0, 0, &hash)) {
+        LOG_ERROR("CryptCreateHash() failed");
+        goto exit;
+    }
+            
+    if (!cp_function_list.CryptHashData(hash, (CONST BYTE *) data->data, data->len, 0)) {
+        LOG_ERROR("CryptHashData() failed");
+        goto exit;
+    }
+
+    if (cp_function_list.CryptVerifySignature(hash, 
+                                                (CONST BYTE *) sign_reversed.data, 
+                                                sign_reversed.len, 
+                                                hPubKey,
+                                                NULL, 
+                                                0)) {
+        LOG_DEBUG("sign is valid");
+        *is_verified = true;
+    } else {
+        get_verify_error(verify_error);
+        if (*verify_error == NULL) {
+            goto exit;
+        }
+        LOG_WARN("%s", *verify_error);
+    }
+
+    rc = 0;
+
+exit:
+    str_t_clear(&sign_reversed);
+
+    if (hash) {
+        cp_function_list.CryptDestroyHash(hash);
+    }
+
+    if (hPubKey) {
+        cp_function_list.CryptDestroyKey(hPubKey);
+    }
+
+    if (hCryptProv) {
+        cp_function_list.CryptReleaseContext(hCryptProv, 0);
+    }
+
+    if (certificate) {
+        cp_function_list.CertFreeCertificateContext(certificate);
+    }
+
+    if (hStoreHandle) {
+        if (!cp_function_list.CertCloseStore(hStoreHandle, CERT_CLOSE_STORE_CHECK_FLAG)) {
+            LOG_ERROR("CertCloseStore() failed");
+        }
+    }
+
+    if (rc == 0) {
+        LOG_TRACE("cryptopro_verify exit");
+    } else {
+        LOG_ERROR("cryptopro_verify exit with error. Last error code: 0x%08x", 
+                    cp_function_list.GetLastError());
+    }
+
+    return rc;  
+}
--- a/src/utils/cryptopro.h
+++ b/src/utils/cryptopro.h
@ -8,22 +8,25 @@


 typedef struct cryptopro_context_s {
-    const char      *signer;
-    const str_t     *pin;
+    const str_t     *cert_thumbprint;
+    const str_t     *password;
 } cryptopro_context_t;


 static inline void
-cryptopro_context_set(cryptopro_context_t *ctx, const char *signer, const str_t *pin)
+cryptopro_context_set(cryptopro_context_t *ctx, const str_t *cert_thumbprint, const str_t *password)
 {
    assert(ctx != NULL);

-    ctx->signer = signer;
-    ctx->pin = pin;
+    ctx->cert_thumbprint = cert_thumbprint;
+    ctx->password = password;
 }

 bool cryptopro_init(const char* cp_file);

 int cryptopro_sign(const cryptopro_context_t *ctx, const str_t *data, /*out*/ str_t *sign);

+int cryptopro_verify(const str_t* cert_thumbprint, const str_t* alg, const str_t *data, 
+                        const str_t *sign, bool* is_verified, char** verify_error);
+
 #endif // CRYPTOPRO_H_INCLUDED
--- a/src/utils/gconf_file.c
+++ b/src/utils/gconf_file.c
@ -1,69 +1,9 @@
 #include "gconf_file.h"
+#include "glib_utils.h"
 #include "logger.h"

 #include <assert.h>

-/** Returns the length of the gchar string @str
- */
-static inline size_t gstr_byte_len(const gchar* str)
-{
-    return strlen((char*) str);
-}
-
-/*
- * Copies the gchar string pointed by src into the content pointed by dst, including
- * the terminating null character (and stopping at that point).
- * Uses to avoid dependence from glib.
- * @src: gchar string to be copied
- * @dst: pointer to destination of type str_t where content is to be copied
- * Return value: 0 - success, -1 - error
- */
-static int
-copy_gchar2strt(const gchar* src, str_t* dst)
-{
-    assert(src != NULL);
-    assert(dst != NULL);
-
-    size_t len = gstr_byte_len(src);
-    char* data = (char*) malloc(len + 1);
-    if (data == NULL) {
-        LOG_ERROR("gchar2strt exit with error: could not allocate memory for dst");
-        return -1;
-    }
-
-    dst->data = data;
-    dst->len = len;
-    memcpy(dst->data, src, dst->len + 1);
-    dst->data[dst->len] = '\0';
-    return 0;
-}
-
-
-/*
- * Copies the gchar string pointed by src into the content pointed by return value,
- * including the terminating null character (and stopping at that point).
- * Uses to avoid dependence from glib.
- * @src: gchar string to be copied
- * Return value: pointer to destination where content is to be copied
- */
-static char*
-copy_gchar2char(const gchar* src)
-{
-    assert(src != NULL);
-
-    // char* tmp_end = strchr(src, '\0');
-    char* dst = NULL;
-    size_t len = gstr_byte_len(src);
-    dst = (char*) malloc(len + 1);
-    if (dst == NULL) {
-        LOG_ERROR("gchar2char exit with error: could not allocate memory for dst");
-        return NULL;
-    }
-    memcpy(dst, src, len + 1);
-    return dst;
-}
-
-
 /* Returns the string value from GKeyFile associated with key under section and converted to str_t
 * @ini_file: GKeyFile
 * @section: section name in config file
--- a/src/utils/glib_utils.c
+++ b/src/utils/glib_utils.c
@ -0,0 +1,49 @@
+#include "glib_utils.h"
+
+#include "logger.h"
+
+#include <assert.h>
+
+/** Returns the length of the gchar string @str
+ */
+static inline size_t 
+gstr_byte_len(const gchar* str)
+{
+    return strlen((char*) str);
+}
+
+int
+copy_gchar2strt(const gchar* src, str_t* dst)
+{
+    assert(src != NULL);
+    assert(dst != NULL);
+
+    size_t len = gstr_byte_len(src);
+    char* data = (char*) malloc(len + 1);
+    if (data == NULL) {
+        LOG_ERROR("gchar2strt exit with error: could not allocate memory for dst");
+        return -1;
+    }
+
+    dst->data = data;
+    dst->len = len;
+    memcpy(dst->data, src, dst->len + 1);
+    dst->data[dst->len] = '\0';
+    return 0;
+}
+
+char*
+copy_gchar2char(const gchar* src)
+{
+    assert(src != NULL);
+
+    char* dst = NULL;
+    size_t len = gstr_byte_len(src);
+    dst = (char*) malloc(len + 1);
+    if (dst == NULL) {
+        LOG_ERROR("gchar2char exit with error: could not allocate memory for dst");
+        return NULL;
+    }
+    memcpy(dst, src, len + 1);
+    return dst;
+}
--- a/src/utils/glib_utils.h
+++ b/src/utils/glib_utils.h
@ -0,0 +1,32 @@
+#ifndef GLIB_UTULS_H_INCLUDED
+#define GLIB_UTULS_H_INCLUDED
+
+#include "str_t.h"
+
+#include <glib.h>
+
+
+/*
+ * Copies the gchar string pointed by src into the content pointed by dst, including
+ * the terminating null character (and stopping at that point).
+ * Uses to avoid dependence from glib.
+ * @src: gchar string to be copied
+ * @dst: pointer to destination of type str_t where content is to be copied
+ * Return value: 0 - success, -1 - error
+ */
+int
+copy_gchar2strt(const gchar* src, str_t* dst);
+
+
+/*
+ * Copies the gchar string pointed by src into the content pointed by return value,
+ * including the terminating null character (and stopping at that point).
+ * Uses to avoid dependence from glib.
+ * @src: gchar string to be copied
+ * Return value: pointer to destination where content is to be copied
+ */
+char*
+copy_gchar2char(const gchar* src);
+
+
+#endif // GLIB_UTULS_H_INCLUDED
--- a/src/utils/json_parser.c
+++ b/src/utils/json_parser.c
@ -0,0 +1,239 @@
+#include "json_parser.h"
+
+#include "glib_utils.h"
+#include "logger.h"
+
+#include <assert.h>
+#include <json-glib/json-glib.h>
+
+
+typedef struct json_parser_s {
+    JsonParser                  *parser;
+    void                        *root;
+    json_parser_type         root_type;
+
+} json_parser_t;
+
+
+static JsonObject* get_object_from_node(JsonNode *node);
+static int json_get_object_member_as_string(Hjson_parser hparser, const char* field_name,
+                                            /*out*/ str_t* field_value);
+
+
+Hjson_parser
+json_parser_create(const char* data, size_t data_len)
+{
+    GError* gerror = NULL;
+    JsonNode* json_node = NULL;
+    JsonNodeType json_node_type;
+    const char *desc = "";
+
+    LOG_TRACE("json_parser_create enter");
+
+    assert(data != NULL && data_len != 0 && "json data is empty");
+
+    json_parser_t* parser = calloc (sizeof(json_parser_t), 1);
+    if (parser == NULL) {
+        desc = "Could not allocate memory for json_parser_t";
+        goto error;
+    }
+
+    parser->parser = json_parser_new();
+    if (parser->parser == NULL) {
+        desc = "Could not create JsonParser";
+        goto error;
+    }
+
+    LOG_DEBUG("json_parser_create. json data: %.*s", (int)data_len, data);
+
+    if (json_parser_load_from_data(parser->parser, data, data_len, &gerror) != TRUE) {
+        LOG_ERROR("json_parser_create. json_parser_load_from_data failed: %s", gerror->message);
+        g_error_free(gerror);
+        goto error;
+    }
+
+    /* get root node */
+    json_node = json_parser_get_root(parser->parser);
+    if (json_node == NULL) {
+        desc = "Could not parse json object: json_parser_get_root failed";
+        goto error;
+    }
+
+    json_node_type = json_node_get_node_type(json_node);
+    if (json_node_type != JSON_NODE_OBJECT) {
+        desc = "Could not parse json object: unexpected root type";
+        goto error;
+    }
+
+    parser->root_type = JSON_PARSER_TYPE_OBJECT;
+
+    /* try to get root as object */
+    parser->root = get_object_from_node(json_node);
+    if (parser->root == NULL) {
+        desc = "Could not parse json object: json_node_get_object failed";
+        goto error;
+    }
+
+    return (Hjson_parser)parser;
+
+error:
+    json_parser_free((Hjson_parser)parser);
+    LOG_ERROR("json_parser_create exit with error. Desc: %s", desc);
+    return NULL;;
+}
+
+
+void
+json_parser_free(Hjson_parser hparser)
+{
+    json_parser_t* parser = (json_parser_t*) hparser;
+
+    if (parser == NULL) return;
+
+    if (parser->parser != NULL) {
+        g_object_unref(parser->parser);
+    }
+
+    free(parser);
+}
+
+
+int
+json_get_string_member(Hjson_parser hparser, const char* field_name,
+                            /*out*/ str_t* field_value)
+{
+    LOG_TRACE("json_get_string_member enter");
+
+    switch (json_get_object_member_as_string(hparser, field_name, field_value)) {
+    case 0:
+        LOG_TRACE("json_get_string_member exit successfully. field_value: %.*s",
+                  (int) field_value->len,
+                  field_value->data);
+        return 0;
+    case 1:
+        LOG_ERROR("Could not retrieve '%.*s' from json object. "
+                  "Desc: field does not exist or it has not proper type. "
+                  "Expected: string member",
+                  (int) field_value->len, field_value->data);
+        break;
+    default:
+        LOG_ERROR("json_get_object_member_as_string failed, member: '%.*s'",
+                  (int) field_value->len, field_value->data);
+        break;
+
+    }
+
+    LOG_ERROR("json_get_string_member exit with error");
+    return -1;
+}
+
+
+static JsonObject*
+get_object_from_node(JsonNode *node)
+{
+    JsonObject *ret = NULL;
+
+    if (node == NULL) {
+        LOG_WARN("get_object_from_node. node is NULL");
+        return NULL;
+    }
+
+    if (!JSON_NODE_HOLDS_OBJECT(node)) {
+        LOG_ERROR("Bad json scheme. Expected node: object");
+        return NULL;
+    }
+
+    ret = json_node_get_object(node);
+    assert(ret != NULL && "Could not extract the node of correct type");
+
+    return ret;
+}
+
+
+static int
+get_string_from_node(JsonNode *node, /*out*/ const gchar **value)
+{
+    assert(value != NULL);
+
+    *value = NULL;
+
+    if (node == NULL) {
+        LOG_WARN("get_string_from_node. node is NULL");
+        return 0;
+    }
+
+    /* если нод содержит нулевое значение, оставляем наш указатель так же нулевым */
+    if (JSON_NODE_HOLDS_NULL(node)) {
+        LOG_DEBUG("get_string_from_node. node holds NULL");
+        return 0;
+    }
+
+    if (!JSON_NODE_HOLDS_VALUE(node) || G_TYPE_STRING != json_node_get_value_type(node)) {
+        LOG_ERROR("Bad json scheme. Expected node: string value. Actual node type: %s",
+                    json_node_type_name(node));
+        return -1;
+    }
+
+    *value = json_node_get_string(node);
+    if (*value == NULL) {
+        LOG_ERROR("Bad json node. Expected node: string value");
+        return -1;
+    }
+
+    return 0;
+}
+
+
+static int
+json_object_get_string(JsonObject *object, const gchar *key, /*out*/const gchar** value)
+{
+    JsonNode *node = NULL;
+
+    LOG_TRACE("json_object_get_string");
+
+    assert(object != NULL);
+    assert(key != NULL);
+    assert(value != NULL);
+
+    *value = NULL;
+
+    node = json_object_get_member(object, key);
+
+    if (node == NULL) {
+        LOG_DEBUG("object member by key '%s' is not exists", key);
+        /* ret = NULL; */
+        return 0;
+    }
+
+    return get_string_from_node(node, value);
+}
+
+
+static int 
+json_get_object_member_as_string(Hjson_parser hparser, const char* field_name,
+                                    /*out*/ str_t* field_value)
+{
+    json_parser_t* parser = (json_parser_t*) hparser;
+    const gchar* value = NULL;
+
+    assert(parser != NULL);
+    assert(parser->root_type == JSON_PARSER_TYPE_OBJECT);
+    assert(parser->root != NULL);
+    assert(field_name != NULL);
+    assert(field_value != NULL && str_t_is_null(*field_value));
+
+    LOG_DEBUG("json_get_object_member_as_string. field name: %s", field_name);
+
+    if (json_object_get_string((JsonObject*) (parser->root), field_name, &value)) {
+        return -1;
+    }
+    if (value == NULL) {
+        return 1;
+    }
+    if (copy_gchar2strt(value, field_value) != 0) {
+        LOG_ERROR("json_get_object_member_as_string. Could not copy field_value");
+        return -1;
+    }
+
+    return 0;
+}
--- a/src/utils/json_parser.h
+++ b/src/utils/json_parser.h
@ -0,0 +1,31 @@
+#ifndef JSON_PARSER_H_INCLUDED
+#define JSON_PARSER_H_INCLUDED
+
+#include "str_t.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+
+
+typedef struct json_parser_t *Hjson_parser;
+
+
+typedef enum json_parser_type_e {
+    JSON_PARSER_TYPE_UNKNOWN,
+    JSON_PARSER_TYPE_STRING,
+    JSON_PARSER_TYPE_OBJECT,
+    JSON_PARSER_TYPE_ARRAY
+
+} json_parser_type;
+
+
+Hjson_parser json_parser_create(const char* data, size_t data_len);
+
+void json_parser_free(Hjson_parser hparser);
+
+
+int json_get_string_member(Hjson_parser hparser, const char* field_name,
+                            /*out*/ str_t* field_value);
+
+
+#endif // JSON_PARSER_H_INCLUDED
--- a/src/utils/jwt.c
+++ b/src/utils/jwt.c
@ -0,0 +1,75 @@
+#include "jwt.h"
+
+#include "json_parser.h"
+#include "logger.h"
+
+#define JWT_ALG_FIELD_NAME      "alg"
+
+int 
+jwt_get_header_payload_and_sign(const str_t *jwt, 
+                                /*out*/ str_t *header, 
+                                /*out*/ str_t *header_payload, 
+                                /*out*/ str_t *sign)
+{
+    LOG_TRACE("jwt_get_header_payload_and_sign enter");
+
+    size_t p_start = 0, p_end = 0;
+
+    for (size_t i = 0; i < jwt->len; i++) {
+        if (jwt->data[i] == '.') {
+            if (p_start == 0) {
+                p_start = i + 1;
+            } else {
+                p_end = i;
+                break;
+            }
+        }
+    }
+
+    if (p_start == 0 || p_end == 0) {
+        LOG_ERROR("Could not parse jwt. p_start = %zd, p_end = %zd", p_start, p_end);
+        return -1;
+    }
+
+    header->data = (char*)jwt->data;
+    header->len = p_start - 1;
+
+    header_payload->data = (char*)jwt->data;
+    header_payload->len = p_end;
+
+    sign->data = (char*)jwt->data + p_end + 1;
+    sign->len = jwt->len - p_end - 1;
+
+    LOG_DEBUG("header: %.*s", (int) header->len, header->data);
+    LOG_DEBUG("header_payload: %.*s", (int) header_payload->len, header_payload->data);
+    LOG_DEBUG("sign: %.*s", (int) sign->len, sign->data);
+
+    LOG_TRACE("jwt_get_header_payload_and_sign exit");
+
+    return 0;
+}
+
+int
+jwt_get_alg_from_header(const str_t *header, /*out*/ str_t *alg) 
+{
+    LOG_TRACE("jwt_get_alg_from_header enter");
+
+    Hjson_parser parser = json_parser_create(header->data, header->len);
+    if (parser == NULL) {
+        goto error;
+    }
+
+    if (json_get_string_member(parser, JWT_ALG_FIELD_NAME, alg)) {
+        goto error;
+    }
+
+    json_parser_free(parser);
+
+    LOG_TRACE("jwt_get_alg_from_header exit");
+    return 0;
+
+error:
+    json_parser_free(parser);
+    LOG_ERROR("jwt_get_alg_from_header exit with error");
+    return -1;
+}
--- a/src/utils/jwt.h
+++ b/src/utils/jwt.h
@ -0,0 +1,13 @@
+#ifndef JWT_H_INCLUDED
+#define JWT_H_INCLUDED
+
+#include "str_t.h"
+
+int jwt_get_header_payload_and_sign(const str_t *jwt, 
+                                        /*out*/ str_t *header, 
+                                        /*out*/ str_t *header_payload, 
+                                        /*out*/ str_t *sign);
+
+int jwt_get_alg_from_header(const str_t *header, /*out*/ str_t *alg);
+
+#endif // JWT_H_INCLUDED
--- a/src/utils/str_t.c
+++ b/src/utils/str_t.c
@ -49,3 +49,51 @@ str_t_to_string(const str_t* str)

    return string;
 }
+
+
+static int 
+char2int(char input)
+{
+    if (input >= '0' && input <= '9') {
+        return input - '0';
+    }
+
+    if (input >= 'A' && input <= 'F') {
+        return input - 'A' + 10;
+    }
+
+    if (input >= 'a' && input <= 'f') {
+        return input - 'a' + 10;
+    }
+    
+    LOG_ERROR("char2int exit with error: invalid argument, '%c'", input);
+    assert("char2int exit with error: invalid argument");
+    return -1;
+}
+
+
+int 
+hex_to_bin(const str_t* hex, /*out*/ str_t* bin)
+{
+    bin->len = hex->len / 2;
+    bin->data = malloc(bin->len + 1);
+    if (bin->data == NULL) {
+        LOG_ERROR("Could not allocate memory for bin value (%zd bytes)", bin->len + 1);
+        goto error;
+    }
+
+    const char* src = hex->data;
+    char* dst = bin->data;
+
+    while (*src && src[1]) {
+        *(dst++) = char2int(*src)*16 + char2int(src[1]);
+        src += 2;
+    }
+
+    return 0;
+
+error:
+    str_t_clear(bin);
+    LOG_ERROR("hex_to_bin exit with error");
+    return -1;
+}
--- a/src/utils/str_t.h
+++ b/src/utils/str_t.h
@ -92,4 +92,6 @@ int str_t_copy(str_t* dst, const str_t* src);

 char* str_t_to_string(const str_t* str);

+int hex_to_bin(const str_t* hex, /*out*/ str_t* bin);
+
 #endif // STR_T_H_INCLUDED
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@ -0,0 +1,30 @@
+project (test-ervu-sign-module LANGUAGES C)
+
+include_directories (
+    ../src
+    ${GLIB2_INCLUDE_DIRS}
+    ${JSONGLIB_INCLUDE_DIRS}
+)
+
+set (ESM_SOURCES
+    ../src/utils/glib_utils.c
+    ../src/utils/json_parser.c
+    ../src/utils/jwt.c
+    ../src/utils/logger.c
+)
+
+set (HEADERS
+    utils/test_jwt.h
+)
+
+set (SOURCES
+    main.c
+    utils/test_jwt.c
+    "${ESM_SOURCES}"
+)
+
+add_executable(test-ervu-sign-module ${HEADERS} ${SOURCES})
+
+target_link_libraries(test-ervu-sign-module cunit glib-2.0 json-glib-1.0 gobject-2.0)
+
+add_test(NAME test-ervu-sign-module COMMAND test-ervu-sign-module)
--- a/tests/main.c
+++ b/tests/main.c
@ -0,0 +1,30 @@
+#include "utils/test_jwt.h"
+
+#include <CUnit/Basic.h>
+
+int main(int arv, char** argc)
+{
+    int failures = -1;
+    (void)arv;
+    (void)argc;
+
+    if (CUE_SUCCESS != CU_initialize_registry())
+      return CU_get_error();
+
+    CU_pSuite suite_jwt = CU_add_suite("JWTSuit", NULL, NULL);
+    if (NULL == suite_jwt) {
+      goto exit;
+    }
+
+    if (NULL == CU_ADD_TEST(suite_jwt, test_jwt_get_header_payload_and_sign)) goto exit;
+    if (NULL == CU_ADD_TEST(suite_jwt, test_jwt_get_alg_from_header)) goto exit;
+
+    CU_basic_set_mode(CU_BRM_NORMAL);
+    CU_basic_run_tests();
+
+exit:
+    failures = CU_get_number_of_failures();
+    CU_cleanup_registry();
+
+    return (failures == 0) ? 0 : -1;
+}
--- a/tests/utils/test_jwt.c
+++ b/tests/utils/test_jwt.c
@ -0,0 +1,68 @@
+#include "test_jwt.h"
+#include "utils/jwt.h"
+
+#include <CUnit/Basic.h>
+
+#define JWT         "eyJ2ZXIiOjEsInR5cCI6IkpXVCIsInNidCI6ImF1dGhvcml6YXRpb25fY29kZSIsImFsZyI6IkdP" \
+                    "U1QzNDEwXzIwMTJfMjU2In0.eyJuYmYiOjE2ODE3MzI4ODQsInNjb3BlIjoib3BlbmlkIiwiYXV0" \
+                    "aF90aW1lIjoxNjgxNzMyODc2LCJpc3MiOiJodHRwOlwvXC9lc2lhLXBvcnRhbDEudGVzdC5nb3N1" \
+                    "c2x1Z2kucnVcLyIsInVybjplc2lhOnNpZCI6Ijg3NWQzNDZhLTgzMTktMmM1MS05ZDYwLTYwZmRk" \
+                    "MzE4MGVhOSIsInVybjplc2lhOmNsaWVudDpzdGF0ZSI6Ijg5MzgzNDdhLTI0MmMtNGVhYy05NTdk" \
+                    "LTk4MDgzNTAzYzUwNyIsImF1dGhfbXRoZCI6IlBXRCIsInVybjplc2lhOnNiaiI6eyJ1cm46ZXNp" \
+                    "YTpzYmo6bHZsIjoiUCIsInVybjplc2lhOnNiajp0eXAiOiJQIiwidXJuOmVzaWE6c2JqOm9pZCI6" \
+                    "MTAwMDQwMDgyMywidXJuOmVzaWE6c2JqOm5hbSI6Ik9JRC4xMDAwNDAwODIzIn0sImV4cCI6MTY4" \
+                    "MTczMzEyNCwicGFyYW1zIjp7fSwiaWF0IjoxNjgxNzMyODg0LCJjbGllbnRfaWQiOiI1MDAyMDEi" \
+                    "fQ.8EBVu5Cizok66n1sIrVmS07N_4j9TuaKHlQffr98hwv9amUN5zpckH4dyJtO6IA-8UkhZ19ww" \
+                    "Of0F_VCmhOqmQ"
+
+#define JWT_HEADER  "eyJ2ZXIiOjEsInR5cCI6IkpXVCIsInNidCI6ImF1dGhvcml6YXRpb25fY29kZSIsImFsZyI6IkdP" \
+                    "U1QzNDEwXzIwMTJfMjU2In0"
+
+#define JWT_HEADER_PAYLOAD "eyJ2ZXIiOjEsInR5cCI6IkpXVCIsInNidCI6ImF1dGhvcml6YXRpb25fY29kZSIsImFsZ" \
+                           "yI6IkdPU1QzNDEwXzIwMTJfMjU2In0.eyJuYmYiOjE2ODE3MzI4ODQsInNjb3BlIjoib3" \
+                           "BlbmlkIiwiYXV0aF90aW1lIjoxNjgxNzMyODc2LCJpc3MiOiJodHRwOlwvXC9lc2lhLXB" \
+                           "vcnRhbDEudGVzdC5nb3N1c2x1Z2kucnVcLyIsInVybjplc2lhOnNpZCI6Ijg3NWQzNDZh" \
+                           "LTgzMTktMmM1MS05ZDYwLTYwZmRkMzE4MGVhOSIsInVybjplc2lhOmNsaWVudDpzdGF0Z" \
+                           "SI6Ijg5MzgzNDdhLTI0MmMtNGVhYy05NTdkLTk4MDgzNTAzYzUwNyIsImF1dGhfbXRoZC" \
+                           "I6IlBXRCIsInVybjplc2lhOnNiaiI6eyJ1cm46ZXNpYTpzYmo6bHZsIjoiUCIsInVybjp" \
+                           "lc2lhOnNiajp0eXAiOiJQIiwidXJuOmVzaWE6c2JqOm9pZCI6MTAwMDQwMDgyMywidXJu" \
+                           "OmVzaWE6c2JqOm5hbSI6Ik9JRC4xMDAwNDAwODIzIn0sImV4cCI6MTY4MTczMzEyNCwic" \
+                           "GFyYW1zIjp7fSwiaWF0IjoxNjgxNzMyODg0LCJjbGllbnRfaWQiOiI1MDAyMDEifQ"
+
+#define JWT_SIGN    "8EBVu5Cizok66n1sIrVmS07N_4j9TuaKHlQffr98hwv9amUN5zpckH4dyJtO6IA-8UkhZ19ww" \
+                    "Of0F_VCmhOqmQ"
+
+#define JWT_HEADER_DECODED  "{\"ver\":1,\"typ\":\"JWT\",\"sbt\":\"authorization_code\"," \
+                            "\"alg\":\"GOST3410_2012_256\"}"
+
+#define JWT_ALG             "GOST3410_2012_256"
+
+void test_jwt_get_header_payload_and_sign()
+{
+    int rc;
+    str_t jwt = str_t_const(JWT);
+    str_t sign = str_t_null;
+    str_t header = str_t_null;
+    str_t header_payload = str_t_null;
+
+    rc = jwt_get_header_payload_and_sign(&jwt, &header, &header_payload, &sign);
+    CU_ASSERT_EQUAL(rc, 0);
+
+    CU_ASSERT_NSTRING_EQUAL(header.data, JWT_HEADER, header.len);
+    CU_ASSERT_NSTRING_EQUAL(header_payload.data, JWT_HEADER_PAYLOAD, header_payload.len);
+    CU_ASSERT_NSTRING_EQUAL(sign.data, JWT_SIGN, sign.len);
+}
+
+void test_jwt_get_alg_from_header()
+{
+    int rc;
+    str_t header = str_t_const(JWT_HEADER_DECODED);
+    str_t alg = str_t_null;
+
+    rc = jwt_get_alg_from_header(&header, &alg);
+    CU_ASSERT_EQUAL(rc, 0);
+
+    CU_ASSERT_NSTRING_EQUAL(alg.data, JWT_ALG, alg.len);
+
+    str_t_clear(&alg);
+}
--- a/tests/utils/test_jwt.h
+++ b/tests/utils/test_jwt.h
@ -0,0 +1,8 @@
+#ifndef TEST_JWT_H_INCLUDED
+#define TEST_JWT_H_INCLUDED
+
+void test_jwt_get_header_payload_and_sign();
+
+void test_jwt_get_alg_from_header();
+
+#endif // TEST_JWT_H_INCLUDED
--- a/1.1.0.txt
+++ b/1.1.0.txt
@ -0,0 +1,116 @@
+В версии 1.1.0 появились следующие функции:
+- Проверка подписи маркера доступа
+- Вывод номера версии приложения
+
+Для обновления приложения необходимо выполнить следующие шаги (команды выполняются от имени root):
+
+0. Установить новые зависимости:  
+```
+apt-get install libjson-glib
+```
+
+1. Остановить службу:
+```
+systemctl stop ervu-sign-module
+```
+
+2. Обновить приложение:
+```
+cp ./ervu-sign-module /opt/ervu-sign-module/
+```
+
+3. Обновить конфигурационный файл /etc/ervu-sign-module.conf. Для этого:
+
+3.1. Перенести настройку cp_file из секции [sign] в секцию [main]
+
+3.2. Задать SHA1 отпечаток сертификата, которым ИС подписывает секрет, для этого:
+
+3.2.1. В конфигурационном файле получить значение <signer_subject>
+
+3.2.2. Получить перечень свойств сертификата (команда выполняется от имени ervu):
+```
+/opt/cprocsp/bin/amd64/certmgr -list -dn <signer_subject>
+```
+
+Из полученного перечня свойств сертификата необходимо получить поле "SHA1 отпечаток".
+
+3.2.3. В конфигурационном файле в секции [sign] задать полученное значение полю sign_cert_thumbprint:
+[sign]
+sign_cert_thumbprint = <значение поля "SHA1 отпечаток", полученное на предыдущем шаге>
+
+3.2.4. Настройку signer_subject нужно удалить.
+
+3.3. Переименовать настройку с паролем от контейнера (было - pin, стало - sign_cert_password)
+[sign]
+sign_cert_password = <пароль, который раньше задавался в поле pin>
+
+4. Установить сертификат ЕСИА. Для этого:
+
+4.1. Скачать сертификаты тестовой и продуктивной сред ЕСИА, используемые для формирования электронных подписей ответов как поставщика, по ссылке: https://esia.gosuslugi.ru/public/esia.zip
+
+4.2. Из списка сертификатов выбрать тот, который подходит под конфигурацию стенда (в зависимости от алгоритма подписи и от того, является ли среда тестовой или продуктивной):  
+
+| Среда \ Алгоритм подписания | RS256                                               | GOST3410_2012_256                                   |
+|-----------------------------|-----------------------------------------------------|-----------------------------------------------------|
+|                             | RSA_TESIA_2024.cer                                  | TESIA GOST 2012 new.cer                             |
+| Тестовая                    | Отпечаток: 6a3813240f6cc285e6d4e6d9a4bfeb26038195d8 | Отпечаток: e654f6114dc19bae84c5748794a4fd7797726e71 |
+|                             | Срок действия: по 06.08.2034                        | Срок действия: по 24.04.2025                        |
+|-----------------------------|-----------------------------------------------------|-----------------------------------------------------|
+|                             | RSA_PROD_2024.cer                                   | ГОСТ+ПРОД+24-25.cer                                 |
+| Продуктивная                | Отпечаток: 29c2f9c8e064d73509eadd685a5508712735e303 | Отпечаток: 20ad21785b9161ef46f075d4dc23c34e1e349228 |
+|                             | Срок действия: по 12.05.2025                        | Срок действия: по 08.06.2025                        |
+-------------------------------------------------------------------------------------------------------------------------------------------
+
+4.3. Установить выбранный сертификат (команда выполняется от имени ervu):
+```
+/opt/cprocsp/bin/amd64/certmgr -install -file '<esia_cert>.cer'
+```
+
+Результатом команды будет список полей сертификата. Из него необходимо получить следующие значения:
+- Поле "SHA1 отпечаток": это значение нужно будет указать в конфигурационном файле в качестве настройки <esia_cert_thumbprint>.
+- Поле "Алгоритм подписи": проверить, что значение совпадает с настройками ИС в ЕСИА.
+- Поле "Истекает": проверить, что срок действия сертификата не истёк.
+
+4.4. В конфигурационном файле добавить секцию [verify]:
+[verify]
+#location = /verify
+esia_cert_thumbprint = 
+
+4.5. Прописать SHA1 отпечаток сертификата ЕСИА:
+[verify]
+esia_cert_thumbprint = <значение, полученное на шаге 4.3.>
+
+Примечание. Пример конфигурационного файла можно посмотреть в conf/ervu-sign-module.conf.example
+
+5. Запустить службу:
+```
+systemctl start ervu-sign-module
+```
+
+6. Обновить конфигурационный файл /etc/nginx/nginx.conf:
+заменить строку:
+
+```
+location = /sign {
+```
+
+на:
+
+```
+location / {
+```
+
+Примечание. Пример конфигурационного файла можно посмотреть в conf/nginx.conf
+
+7. Перезапустить nginx:
+```
+systemctl reload nginx
+```
+
+8. Проверить версию приложения:
+```
+curl -v http://127.0.0.1/version
+```
+
+Статус-код ответа должен быть равен 200 OK.
+В ответе должна быть возвращена строчка "1.1.0".
--- a/сборке.md
+++ b/сборке.md
@ -18,7 +18,7 @@ cd -
 1. Установить зависимости для сборки приложения:
 ``` bash
 apt-get install cmake gcc gcc10
-apt-get install glib2-devel libfcgi-devel
+apt-get install glib2-devel libfcgi-devel libjson-glib libjson-glib-devel
 ```

 2. Собрать приложение из исходников:
--- a/установке.md
+++ b/установке.md
@ -11,11 +11,21 @@ adduser --system --no-create-home --user-group ervu

 1. Скачать КриптоПро 5 R3 КС3.

-2. Установить КриптоПро. Для этого выполнить команды от имени root:
+2. Установить КриптоПро.  
+2.1. Для продуктивного контура:  
+2.1.1. Установить КриптоПро c конфигурацией kc2. Для этого выполнить команды от имени root:
 ``` bash
 tar -zxvf linux-amd64.tgz && cd ./linux-amd64/
-./install.sh
-apt-get install ./cprocsp-pki-cades-64-2.0.14815-1.amd64.rpm
+./install.sh kc2 cprocsp-pki-cades
+cd -
+```
+2.1.2. Установить ПАК "Соболь" по инструкции: https://support.cryptopro.ru/index.php?/Knowledgebase/Article/View/285/2/ispolzovnie-pak-sobol-v-kchestve-dsch-v-kriptopro-csp-n-linux  
+
+2.2. Для тестового контура:  
+2.2.1. Установить КриптоПро c конфигурацией kc1. Для этого выполнить команды от имени root:  
+``` bash
+tar -zxvf linux-amd64.tgz && cd ./linux-amd64/
+./install.sh kc1 cprocsp-pki-cades
 cd -
 ```

@ -24,9 +34,11 @@ cd -
 /opt/cprocsp/sbin/amd64/cpconfig -license -set "Номер"
 ```

-4. Запросить у руководителя проекта реестра повесток контейнер с ключом ИС, зарегистрированной в ЕСИА.
+### Установка ключевой пары ИС, зарегистрированной в ЕСИА

-5. Установить полученную ключевую пару для пользователя, от которого запускается модуль подписания (команды выполняются от имени **ervu**).  
+1. Запросить у руководителя проекта реестра повесток контейнер с ключом ИС, зарегистрированной в ЕСИА.
+
+2. Установить полученную ключевую пару для пользователя, от которого запускается модуль подписания (команды выполняются от имени **ervu**).  
 Внимание! В следующих командах необходимо заменить ***key_cont.000*** на название контейнера, полученного на предыдущем шаге.

 ``` bash
@ -38,22 +50,48 @@ chown -R ervu:ervu /var/opt/cprocsp/keys/ervu/key_cont.000/
 /opt/cprocsp/bin/amd64/csptest -absorb -certs -autoprov
 ```

-6. Получить перечень сертификатов:
+3. Получить перечень сертификатов:
 ``` bash
-sudo -u ervu /opt/cprocsp/bin/amd64/certmgr -list
+/opt/cprocsp/bin/amd64/certmgr -list
 ```

 Получить следующие значения:
- Поле "Субъект": любая подстрока из этого поля является signer_subject (нужно будет указать в конфигурационном файле модуля подписания)
- Поле "Ссылка на ключ": убедиться, что значение равно "Есть" (иначе проверьте выполнение предыдущих шагов)
+- Поле "SHA1 отпечаток": это значение нужно будет указать в конфигурационном файле модуля подписания в качестве настройки \<sign_cert_thumbprint\>
+- Поле "Ссылка на ключ": убедиться, что значение равно "Есть" (иначе необходимо проверить выполнение предыдущих шагов)

-7. Сделать тестовую подпись с помощью установленного контейнера и полученных значений \<signer_subject\> и \<pin\>:
+4. (опционально) Сделать тестовую подпись с помощью установленного контейнера и полученных значений \<sign_cert_thumbprint\> и \<sign_cert_password\>:
 ``` bash
 touch test.txt
-sudo -u ervu /opt/cprocsp/bin/amd64/cryptcp -signf -dn <signer_subject> ./test.txt
+/opt/cprocsp/bin/amd64/cryptcp -signf -thumbprint <sign_cert_thumbprint> ./test.txt
 rm -f test.txt test.txt.sgn
 ```

+### Установка сертификата ЕСИА
+
+1. Скачать сертификаты тестовой и продуктивной сред ЕСИА, используемые для формирования электронных подписей ответов как поставщика, по ссылке: https://esia.gosuslugi.ru/public/esia.zip
+
+2. Из списка сертификатов выбрать тот, который подходит под конфигурацию стенда (в зависимости от алгоритма подписи и от того, является ли среда тестовой или продуктивной):  
+
+| Среда \ Алгоритм подписания | RS256                                               | GOST3410_2012_256                                   |
+|-----------------------------|-----------------------------------------------------|-----------------------------------------------------|
+|                             | RSA_TESIA_2024.cer                                  | TESIA GOST 2012 new.cer                             |
+| Тестовая                    | Отпечаток: 6a3813240f6cc285e6d4e6d9a4bfeb26038195d8 | Отпечаток: e654f6114dc19bae84c5748794a4fd7797726e71 |
+|                             | Срок действия: по 06.08.2034                        | Срок действия: по 24.04.2025                        |
+|-----------------------------|-----------------------------------------------------|-----------------------------------------------------|
+|                             | RSA_PROD_2024.cer                                   | ГОСТ+ПРОД+24-25.cer                                 |
+| Продуктивная                | Отпечаток: 29c2f9c8e064d73509eadd685a5508712735e303 | Отпечаток: 20ad21785b9161ef46f075d4dc23c34e1e349228 |
+|                             | Срок действия: по 12.05.2025                        | Срок действия: по 08.06.2025                        |
+
+3. Установить выбранный сертификат для пользователя, от которого запускается модуль подписания (команды выполняются от имени **ervu**).
+``` bash
+/opt/cprocsp/bin/amd64/certmgr -install -file '<esia_cert>.cer'
+```
+
+Результатом команды будет список полей сертификата. Из него необходимо получить следующие значения:
+- Поле "SHA1 отпечаток": это значение нужно будет указать в конфигурационном файле модуля подписания в качестве настройки \<esia_cert_thumbprint\>.
+- Поле "Алгоритм подписи": проверить, что значение совпадает с настройками ИС в ЕСИА.
+- Поле "Истекает": проверить, что срок действия сертификата не истёк.
+
 ### Установка и настройка nginx

 Дальнейшие шаги выполняются от имени root:
@ -77,7 +115,7 @@ systemctl start nginx

 1. Установить зависимости для запуска приложения:
 ``` bash
-apt-get install glib2 libfcgi
+apt-get install glib2 libfcgi libjson-glib
 ```

 2. Скопировать исполняемый файл:
@ -134,3 +172,20 @@ curl -v http://127.0.0.1/sign -H "Content-Type: text/plain" -d "test"
 REFlyzGQrCjX9DvA7hWwN9vf5kPqBxcG4TLYnXUHnAS9_G-sLAFvaJei2OhxpaWNraHbOv_mMsM_bcDsXWiC0Q
 * Connection #0 to host 127.0.0.1 left intact
 ```
+
+### Версия приложения
+
+Для того, чтобы узнать версию приложения, введите команду:
+
+``` bash
+curl -v http://127.0.0.1/version
+```
+
+В ответе будет получена версия приложения (статус-код ответа должен быть равен 200 OK).
+
+
+### Примечания
+
+Подробнее о работе с КриптоПро CSP здесь:
+- https://www.altlinux.org/%D0%9A%D1%80%D0%B8%D0%BF%D1%82%D0%BE%D0%9F%D1%80%D0%BE
+- https://wiki.astralinux.ru/pages/viewpage.action?pageId=32833902&ysclid=m2si404crb648040570