X-Git-Url: http://wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_crypt.c;h=2bede853fd617919f4d83bb239b0f9ffe1ae8692;hb=69040682b1d04049668bb63712458f28a5c448d4;hp=33dc668cba088cbf88fa1053d432bf835f7390a5;hpb=491b0c7c15e5a343cadabdf9cb7560956c9bb077;p=openssl-gost%2Fengine.git

diff --git a/gost_crypt.c b/gost_crypt.c
index 33dc668..2bede85 100644
--- a/gost_crypt.c
+++ b/gost_crypt.c
@@ -867,6 +867,9 @@ static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *ou
 	if (in == NULL && inl == 0) /* Final call */
 		return gost2015_final_call(ctx, c->omac_ctx, MAGMA_MAC_MAX_SIZE, c->tag, magma_cipher_do_ctr);
 
+  if (in == NULL)
+      return -1;
+
 	/* As in and out can be the same pointer, process unencrypted here */
 	if (EVP_CIPHER_CTX_encrypting(ctx))
 		EVP_DigestSignUpdate(c->omac_ctx, in, inl);