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Use ec_group_do_inverse_ord() in SM2

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Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6521)
This commit is contained in:
Nicola Tuveri 2018-06-21 19:15:50 +03:00 committed by Andy Polyakov
parent 5a2124620c
commit 469c2c4a45
1 changed files with 2 additions and 1 deletions
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3
crypto/sm2/sm2_sign.c
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@ -11,6 +11,7 @@
#include "internal/sm2.h"
#include "internal/sm2err.h"
#include "internal/ec_int.h" /* ec_group_do_inverse_ord() */
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/err.h>
@ -133,7 +134,7 @@ static ECDSA_SIG *sm2_sig_gen(const EC_KEY *key, const BIGNUM *e)
continue;
if (!BN_add(s, dA, BN_value_one())
|| !BN_mod_inverse(s, s, order, ctx)
|| !ec_group_do_inverse_ord(group, s, s, ctx)
|| !BN_mod_mul(tmp, dA, r, order, ctx)
|| !BN_sub(tmp, k, tmp)
|| !BN_mod_mul(s, s, tmp, order, ctx)) {