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-rw-r--r--engines/ccgost/gost_sign.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/engines/ccgost/gost_sign.c b/engines/ccgost/gost_sign.c
index 073c5af079..4b5f49efea 100644
--- a/engines/ccgost/gost_sign.c
+++ b/engines/ccgost/gost_sign.c
@@ -166,7 +166,7 @@ int gost_do_verify(const unsigned char *dgst, int dgst_len,
BIGNUM *q2 = NULL;
BIGNUM *u = NULL, *v = NULL, *z1 = NULL, *z2 = NULL;
BIGNUM *tmp2 = NULL, *tmp3 = NULL;
- int ok;
+ int ok = 0;
BN_CTX *ctx = BN_CTX_new();
if(!ctx) {
GOSTerr(GOST_F_GOST_DO_VERIFY, ERR_R_MALLOC_FAILURE);
@@ -207,9 +207,9 @@ int gost_do_verify(const unsigned char *dgst, int dgst_len,
BN_mod_exp(tmp2, dsa->pub_key, z2, dsa->p, ctx);
BN_mod_mul(tmp3, tmp, tmp2, dsa->p, ctx);
BN_mod(u, tmp3, dsa->q, ctx);
- ok = BN_cmp(u, sig->r);
+ ok = (BN_cmp(u, sig->r) == 0);
- if (ok != 0) {
+ if (!ok) {
GOSTerr(GOST_F_GOST_DO_VERIFY, GOST_R_SIGNATURE_MISMATCH);
}
err:
@@ -218,7 +218,7 @@ err:
BN_CTX_end(ctx);
BN_CTX_free(ctx);
}
- return (ok == 0);
+ return ok;
}
/*