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update ec

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ec_kmeth and strict signature
This commit is contained in:
Zhi Guan
2017-02-19 23:42:33 +08:00
parent 90a001b539
commit 046a5b2104
5 changed files with 112 additions and 15 deletions
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25
crypto/ec/ecdsa_ossl.c
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@@ -297,6 +297,19 @@ ECDSA_SIG *ossl_ecdsa_sign_sig(const unsigned char *dgst, int dgst_len,
}
while (1);
#if 0
if (!BN_rshift1(tmp, order)) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
goto err;
}
if (BN_cmp(ret->s, tmp) <= 0) {
if (!BN_sub(ret->s, order, ret->s)) {
ECerr(EC_F_OSSL_ECDSA_SIGN_SIG, ERR_R_BN_LIB);
goto err;
}
}
#endif
ok = 1;
err:
if (!ok) {
@@ -392,6 +405,18 @@ int ossl_ecdsa_verify_sig(const unsigned char *dgst, int dgst_len,
ret = 0; /* signature is invalid */
goto err;
}
#if 0
if (!BN_rshift1(m, order)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);
goto err;
}
if (BN_cmp(sig->r, m) <= 0) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, EC_R_BAD_SIGNATURE);
ret = 0;
goto err;
}
#endif
/* calculate tmp1 = inv(S) mod order */
if (!BN_mod_inverse(u2, sig->s, order, ctx)) {
ECerr(EC_F_OSSL_ECDSA_VERIFY_SIG, ERR_R_BN_LIB);