Commit 439aab3a authored by Dr. Stephen Henson's avatar Dr. Stephen Henson
Browse files

Submitted by: Dmitry Ivanov <vonami@gmail.com> 

Don't leave dangling pointers in GOST engine if calls fail.
parent 8d934c25

engines/ccgost/gost2001.c

+3 −0
Original line number Diff line number Diff line
@@ -136,12 +136,14 @@ DSA_SIG *gost2001_do_sign(const unsigned char *dgst,int dlen, EC_KEY *eckey) 
				{

				GOSTerr(GOST_F_GOST2001_DO_SIGN,GOST_R_RANDOM_NUMBER_GENERATOR_FAILED);

				DSA_SIG_free(newsig);

				newsig = NULL;

				goto err;

				}	

			if (!EC_POINT_mul(group,C,k,NULL,NULL,ctx))

				{

				GOSTerr(GOST_F_GOST2001_DO_SIGN,ERR_R_EC_LIB);

				DSA_SIG_free(newsig);

				newsig = NULL;

				goto err;

				}	

			if (!X) X=BN_CTX_get(ctx);
@@ -149,6 +151,7 @@ DSA_SIG *gost2001_do_sign(const unsigned char *dgst,int dlen, EC_KEY *eckey) 
				{

				GOSTerr(GOST_F_GOST2001_DO_SIGN,ERR_R_EC_LIB);

				DSA_SIG_free(newsig);

				newsig = NULL;

				goto err;

				}	

			if (!r) r=BN_CTX_get(ctx);