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This commit is contained in:
Pieter Wuille
2013-05-05 00:49:30 +02:00
parent 7823916781
commit 42cccdaf55
4 changed files with 70 additions and 4 deletions
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14
src/impl/ecdsa.h
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@@ -146,4 +146,18 @@ void static secp256k1_ecdsa_sig_set_rs(secp256k1_ecdsa_sig_t *sig, const secp256
secp256k1_num_copy(&sig->s, s);
}
void static secp256k1_ecdsa_pubkey_serialize(secp256k1_ge_t *elem, unsigned char *pub, int *size, int compressed) {
secp256k1_fe_normalize(&elem->x);
secp256k1_fe_normalize(&elem->y);
secp256k1_fe_get_b32(&pub[1], &elem->x);
if (compressed) {
*size = 33;
pub[0] = 0x02 | (secp256k1_fe_is_odd(&elem->y) ? 0x01 : 0x00);
} else {
*size = 65;
pub[0] = 0x04;
secp256k1_fe_get_b32(&pub[33], &elem->y);
}
}
#endif