X-Git-Url: http://www.wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_ec_sign.c;fp=gost_ec_sign.c;h=a825dbabac64e0a6eb1dfa077954ba10ee14a1de;hb=021a2b61b5d904caaf4ceb26ff3163f1f0e4219f;hp=47996e1666a4d3b4534d0db064dec59d07018582;hpb=b2b4d629f100eaee9f5942a106b1ccefe85b8808;p=openssl-gost%2Fengine.git

diff --git a/gost_ec_sign.c b/gost_ec_sign.c
index 47996e1..a825dba 100644
--- a/gost_ec_sign.c
+++ b/gost_ec_sign.c
@@ -365,10 +365,10 @@ int gost_ec_verify(const unsigned char *dgst, int dgst_len,
     ECDSA_SIG_get0(sig, &sig_r, &sig_s);
 
     if (BN_is_zero(sig_s) || BN_is_zero(sig_r) ||
-        (BN_cmp(sig_s, order) >= 1) || (BN_cmp(sig_r, order) >= 1)) {
+        BN_is_negative(sig_s) || BN_is_negative(sig_r) ||
+        BN_ucmp(sig_s, order) >= 0 || BN_ucmp(sig_r, order) >= 0) {
         GOSTerr(GOST_F_GOST_EC_VERIFY, GOST_R_SIGNATURE_PARTS_GREATER_THAN_Q);
         goto err;
-
     }
 
     OPENSSL_assert(dgst_len == 32 || dgst_len == 64);