diff options
Diffstat (limited to 'src/secp256k1/src/secp256k1.c')
| -rw-r--r-- | src/secp256k1/src/secp256k1.c | 38 |
1 files changed, 10 insertions, 28 deletions
diff --git a/src/secp256k1/src/secp256k1.c b/src/secp256k1/src/secp256k1.c index 20fc27df74..0328db88fc 100644 --- a/src/secp256k1/src/secp256k1.c +++ b/src/secp256k1/src/secp256k1.c @@ -40,15 +40,12 @@ void secp256k1_stop(void) { secp256k1_fe_stop(); } -int secp256k1_ecdsa_verify(const unsigned char *msg, int msglen, const unsigned char *sig, int siglen, const unsigned char *pubkey, int pubkeylen) { +int secp256k1_ecdsa_verify(const unsigned char *msg32, const unsigned char *sig, int siglen, const unsigned char *pubkey, int pubkeylen) { DEBUG_CHECK(secp256k1_ecmult_consts != NULL); - DEBUG_CHECK(msg != NULL); - DEBUG_CHECK(msglen <= 32); + DEBUG_CHECK(msg32 != NULL); DEBUG_CHECK(sig != NULL); DEBUG_CHECK(pubkey != NULL); - unsigned char msg32[32] = {0}; - memcpy(msg32 + 32 - msglen, msg, msglen); int ret = -3; secp256k1_scalar_t m; secp256k1_ecdsa_sig_t s; @@ -72,10 +69,9 @@ end: return ret; } -int secp256k1_ecdsa_sign(const unsigned char *message, int messagelen, unsigned char *signature, int *signaturelen, const unsigned char *seckey, const unsigned char *nonce) { +int secp256k1_ecdsa_sign(const unsigned char *msg32, unsigned char *signature, int *signaturelen, const unsigned char *seckey, const unsigned char *nonce) { DEBUG_CHECK(secp256k1_ecmult_gen_consts != NULL); - DEBUG_CHECK(message != NULL); - DEBUG_CHECK(messagelen <= 32); + DEBUG_CHECK(msg32 != NULL); DEBUG_CHECK(signature != NULL); DEBUG_CHECK(signaturelen != NULL); DEBUG_CHECK(seckey != NULL); @@ -85,12 +81,7 @@ int secp256k1_ecdsa_sign(const unsigned char *message, int messagelen, unsigned secp256k1_scalar_set_b32(&sec, seckey, NULL); int overflow = 0; secp256k1_scalar_set_b32(&non, nonce, &overflow); - { - unsigned char c[32] = {0}; - memcpy(c + 32 - messagelen, message, messagelen); - secp256k1_scalar_set_b32(&msg, c, NULL); - memset(c, 0, 32); - } + secp256k1_scalar_set_b32(&msg, msg32, NULL); int ret = !secp256k1_scalar_is_zero(&non) && !overflow; secp256k1_ecdsa_sig_t sig; if (ret) { @@ -105,10 +96,9 @@ int secp256k1_ecdsa_sign(const unsigned char *message, int messagelen, unsigned return ret; } -int secp256k1_ecdsa_sign_compact(const unsigned char *message, int messagelen, unsigned char *sig64, const unsigned char *seckey, const unsigned char *nonce, int *recid) { +int secp256k1_ecdsa_sign_compact(const unsigned char *msg32, unsigned char *sig64, const unsigned char *seckey, const unsigned char *nonce, int *recid) { DEBUG_CHECK(secp256k1_ecmult_gen_consts != NULL); - DEBUG_CHECK(message != NULL); - DEBUG_CHECK(messagelen <= 32); + DEBUG_CHECK(msg32 != NULL); DEBUG_CHECK(sig64 != NULL); DEBUG_CHECK(seckey != NULL); DEBUG_CHECK(nonce != NULL); @@ -117,12 +107,7 @@ int secp256k1_ecdsa_sign_compact(const unsigned char *message, int messagelen, u secp256k1_scalar_set_b32(&sec, seckey, NULL); int overflow = 0; secp256k1_scalar_set_b32(&non, nonce, &overflow); - { - unsigned char c[32] = {0}; - memcpy(c + 32 - messagelen, message, messagelen); - secp256k1_scalar_set_b32(&msg, c, NULL); - memset(c, 0, 32); - } + secp256k1_scalar_set_b32(&msg, msg32, NULL); int ret = !secp256k1_scalar_is_zero(&non) && !overflow; secp256k1_ecdsa_sig_t sig; if (ret) { @@ -138,18 +123,15 @@ int secp256k1_ecdsa_sign_compact(const unsigned char *message, int messagelen, u return ret; } -int secp256k1_ecdsa_recover_compact(const unsigned char *msg, int msglen, const unsigned char *sig64, unsigned char *pubkey, int *pubkeylen, int compressed, int recid) { +int secp256k1_ecdsa_recover_compact(const unsigned char *msg32, const unsigned char *sig64, unsigned char *pubkey, int *pubkeylen, int compressed, int recid) { DEBUG_CHECK(secp256k1_ecmult_consts != NULL); - DEBUG_CHECK(msg != NULL); - DEBUG_CHECK(msglen <= 32); + DEBUG_CHECK(msg32 != NULL); DEBUG_CHECK(sig64 != NULL); DEBUG_CHECK(pubkey != NULL); DEBUG_CHECK(pubkeylen != NULL); DEBUG_CHECK(recid >= 0 && recid <= 3); int ret = 0; - unsigned char msg32[32] = {0}; - memcpy(msg32 + 32 - msglen, msg, msglen); secp256k1_scalar_t m; secp256k1_ecdsa_sig_t sig; int overflow = 0; |