Bugfix - copy dgst context

diff --git a/gost_omac.c b/gost_omac.c
index 23872bc8f72d21e52bd594998618c2f3597a2d17..fa7ab746ba5119a485003521324f17803f47ab33 100644 (file)
--- a/gost_omac.c
+++ b/gost_omac.c
@@ -89,6 +89,10 @@ int omac_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
                {
                        return 0;
                }
+               if (c_to->cmac_ctx == c_from->cmac_ctx)
+               {
+                       return 1;
+               }
                return CMAC_CTX_copy(c_to->cmac_ctx, c_from->cmac_ctx);
 }