diff options
Diffstat (limited to 'crypto/sm2/sm2_sign.c')
| -rw-r--r-- | crypto/sm2/sm2_sign.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/crypto/sm2/sm2_sign.c b/crypto/sm2/sm2_sign.c index b6d41db8e3..79692f146e 100644 --- a/crypto/sm2/sm2_sign.c +++ b/crypto/sm2/sm2_sign.c @@ -28,6 +28,7 @@ int ossl_sm2_compute_z_digest(uint8_t *out, { int rc = 0; const EC_GROUP *group = EC_KEY_get0_group(key); + const EC_POINT *pubkey = EC_KEY_get0_public_key(key); BN_CTX *ctx = NULL; EVP_MD_CTX *hash = NULL; BIGNUM *p = NULL; @@ -42,6 +43,12 @@ int ossl_sm2_compute_z_digest(uint8_t *out, uint16_t entl = 0; uint8_t e_byte = 0; + /* SM2 Signatures require a public key, check for it */ + if (pubkey == NULL) { + ERR_raise(ERR_LIB_SM2, ERR_R_PASSED_NULL_PARAMETER); + goto done; + } + hash = EVP_MD_CTX_new(); ctx = BN_CTX_new_ex(ossl_ec_key_get_libctx(key)); if (hash == NULL || ctx == NULL) { @@ -117,7 +124,7 @@ int ossl_sm2_compute_z_digest(uint8_t *out, || BN_bn2binpad(yG, buf, p_bytes) < 0 || !EVP_DigestUpdate(hash, buf, p_bytes) || !EC_POINT_get_affine_coordinates(group, - EC_KEY_get0_public_key(key), + pubkey, xA, yA, ctx) || BN_bn2binpad(xA, buf, p_bytes) < 0 || !EVP_DigestUpdate(hash, buf, p_bytes) |