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Add secp256k1_ec_pubkey_compress(), with test similar to the related decompress() function.

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This commit is contained in:
Thomas Kerin
2015-07-13 13:09:00 +01:00
parent 873a453d26
commit 99fd963bd5
3 changed files with 45 additions and 5 deletions
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15
src/secp256k1.c
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@@ -285,6 +285,21 @@ int secp256k1_ec_pubkey_decompress(const secp256k1_context_t* ctx, const unsigne
return ret;
}
int secp256k1_ec_pubkey_compress(const secp256k1_context_t* ctx, const unsigned char *pubkeyin, unsigned char *pubkeyout, int *pubkeylen) {
secp256k1_ge_t p;
int ret = 0;
DEBUG_CHECK(pubkeyin != NULL);
DEBUG_CHECK(pubkeyout != NULL);
DEBUG_CHECK(pubkeylen != NULL);
(void)ctx;
if (secp256k1_eckey_pubkey_parse(&p, pubkeyin, *pubkeylen)) {
ret = secp256k1_eckey_pubkey_serialize(&p, pubkeyout, pubkeylen, 1);
}
return ret;
}
int secp256k1_ec_privkey_tweak_add(const secp256k1_context_t* ctx, unsigned char *seckey, const unsigned char *tweak) {
secp256k1_scalar_t term;
secp256k1_scalar_t sec;