[MBEDTLS] Update to version 2.7.19. CORE-17252

[reactos.git] / dll / 3rdparty / mbedtls / hmac_drbg.c

diff --git a/dll/3rdparty/mbedtls/hmac_drbg.c b/dll/3rdparty/mbedtls/hmac_drbg.c
index 26b15e9..876fa57 100644 (file)
--- a/dll/3rdparty/mbedtls/hmac_drbg.c
+++ b/dll/3rdparty/mbedtls/hmac_drbg.c
@@ -88,10 +88,6 @@ void mbedtls_hmac_drbg_init( mbedtls_hmac_drbg_context *ctx )
     memset( ctx, 0, sizeof( mbedtls_hmac_drbg_context ) );
 
     ctx->reseed_interval = MBEDTLS_HMAC_DRBG_RESEED_INTERVAL;
-
-#if defined(MBEDTLS_THREADING_C)
-    mbedtls_mutex_init( &ctx->mutex );
-#endif
 }
 
 /*
@@ -161,6 +157,10 @@ int mbedtls_hmac_drbg_seed_buf( mbedtls_hmac_drbg_context *ctx,
     if( ( ret = mbedtls_md_setup( &ctx->md_ctx, md_info, 1 ) ) != 0 )
         return( ret );
 
+#if defined(MBEDTLS_THREADING_C)
+    mbedtls_mutex_init( &ctx->mutex );
+#endif
+
     /*
      * Set initial working state.
      * Use the V memory location, which is currently all 0, to initialize the
@@ -286,6 +286,11 @@ int mbedtls_hmac_drbg_seed( mbedtls_hmac_drbg_context *ctx,
     if( ( ret = mbedtls_md_setup( &ctx->md_ctx, md_info, 1 ) ) != 0 )
         return( ret );
 
+    /* The mutex is initialized iff the md context is set up. */
+#if defined(MBEDTLS_THREADING_C)
+    mbedtls_mutex_init( &ctx->mutex );
+#endif
+
     md_size = mbedtls_md_get_size( md_info );
 
     /*
@@ -453,14 +458,13 @@ void mbedtls_hmac_drbg_free( mbedtls_hmac_drbg_context *ctx )
         return;
 
 #if defined(MBEDTLS_THREADING_C)
-    mbedtls_mutex_free( &ctx->mutex );
+    /* The mutex is initialized iff the md context is set up. */
+    if( ctx->md_ctx.md_info != NULL )
+        mbedtls_mutex_free( &ctx->mutex );
 #endif
     mbedtls_md_free( &ctx->md_ctx );
     mbedtls_zeroize( ctx, sizeof( mbedtls_hmac_drbg_context ) );
     ctx->reseed_interval = MBEDTLS_HMAC_DRBG_RESEED_INTERVAL;
-#if defined(MBEDTLS_THREADING_C)
-    mbedtls_mutex_init( &ctx->mutex );
-#endif
 }
 
 #if defined(MBEDTLS_FS_IO)