From bc51d2a8cd18ea5d7eda32658c1b876d6b13e2a0 Mon Sep 17 00:00:00 2001
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 =?UTF-8?q?=D0=BA=D0=BE=D0=B2=D0=B0?= <n.alashkova@micord.ru>
Date: Mon, 2 Dec 2024 12:02:24 +0300
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---
 src/utils/cryptopro.c      | 26 +++++++++++++++++++++++++-
 Инструкция по установке.md |  7 +++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/src/utils/cryptopro.c b/src/utils/cryptopro.c
index d15bdd3..acaa949 100644
--- a/src/utils/cryptopro.c
+++ b/src/utils/cryptopro.c
@@ -5,6 +5,7 @@
 #include "library.h"
 #include "logger.h"
 
+
 static capi_function_list_t cp_function_list;
 static library_t libcapi;
 
@@ -203,6 +204,28 @@ exit:
     return is_verified;
 }
 
+static void
+log_sign_hash_data_last_error()
+{
+    DWORD error = cp_function_list.GetLastError();
+
+    switch (error) {
+    case ERROR_FUNCTION_FAILED:
+        LOG_ERROR("sign_hash_data exit with error. Last error code: "
+                    "license is expired or not yet valid (0x%08x)", error);
+        break;
+
+    case SCARD_W_WRONG_CHV:
+        LOG_ERROR("sign_hash_data exit with error. Last error code: "
+                    "the wrong PIN was presented (0x%08x)", error);
+        break;
+        
+    default:
+        LOG_ERROR("sign_hash_data exit with error. Last error code: 0x%08x", error);
+        break;
+    }
+}
+
 static int 
 sign_hash_data(const cryptopro_context_t *ctx, const str_t *data, /*out*/ str_t *sign)
 {
@@ -288,8 +311,9 @@ exit:
     }
 
     if (rc) {
-        LOG_ERROR("sign_hash_data exit with error. Last error code: 0x%08x", cp_function_list.GetLastError());
+        log_sign_hash_data_last_error();
     }
+
     return rc;
 }
 
diff --git a/Инструкция по установке.md b/Инструкция по установке.md
index 0e74d09..8e3390c 100644
--- a/Инструкция по установке.md	
+++ b/Инструкция по установке.md	
@@ -225,6 +225,13 @@ curl -v http://127.0.0.1/version
 
 В ответе будет получена версия приложения (статус-код ответа должен быть равен 200 OK).
 
+### Лицензия КриптоПро
+
+Команда для проверки лицензии КриптоПро:
+``` bash
+/opt/cprocsp/sbin/amd64/cpconfig -license -view
+```
+
 
 ### Примечания