X-Git-Url: http://www.wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_omac.c;fp=gost_omac.c;h=e78fd9d7c5de76e3e7b00c80e7a18a1e5b26eeb9;hb=e0816ed2014bad0e5293cafcce2c07a66a4f1cb0;hp=d1f897a15c2227b8936e51625eeb73f818b433a3;hpb=10ae275fd54e600c08ee330eaf9738aa476e0ca4;p=openssl-gost%2Fengine.git

diff --git a/gost_omac.c b/gost_omac.c
index d1f897a..e78fd9d 100644
--- a/gost_omac.c
+++ b/gost_omac.c
@@ -92,6 +92,13 @@ int omac_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
 		{
 			return 0;
 		}
+                if (!c_from->cmac_ctx) {
+                    if (c_to->cmac_ctx) {
+                        CMAC_CTX_free(c_to->cmac_ctx);
+                        c_to->cmac_ctx = NULL;
+                    }
+                    return 1;
+                }
 		if (c_to->cmac_ctx == c_from->cmac_ctx)
 		{
 		    c_to->cmac_ctx = CMAC_CTX_new();