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Add crypto opcodes

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sanket1729 2021-08-01 19:21:33 +00:00
parent 3e7b8c6aed
commit 7193636d09
7 changed files with 170 additions and 33 deletions
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16
src/pubkey.cpp
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@ -173,12 +173,12 @@ XOnlyPubKey::XOnlyPubKey(Span<const unsigned char> bytes)
std::copy(bytes.begin(), bytes.end(), m_keydata.begin());
}
bool XOnlyPubKey::VerifySchnorr(const uint256& msg, Span<const unsigned char> sigbytes) const
bool XOnlyPubKey::VerifySchnorr(const Span<const unsigned char> msg, Span<const unsigned char> sigbytes) const
{
assert(sigbytes.size() == 64);
secp256k1_xonly_pubkey pubkey;
if (!secp256k1_xonly_pubkey_parse(secp256k1_context_verify, &pubkey, m_keydata.data())) return false;
return secp256k1_schnorrsig_verify(secp256k1_context_verify, sigbytes.data(), msg.begin(), 32, &pubkey);
return secp256k1_schnorrsig_verify(secp256k1_context_verify, sigbytes.data(), msg.data(), msg.size(), &pubkey);
}
bool XOnlyPubKey::CheckPayToContract(const XOnlyPubKey& base, const uint256& hash, bool parity) const
@ -188,6 +188,18 @@ bool XOnlyPubKey::CheckPayToContract(const XOnlyPubKey& base, const uint256& has
return secp256k1_xonly_pubkey_tweak_add_check(secp256k1_context_verify, m_keydata.begin(), parity, &base_point, hash.begin());
}
bool CPubKey::TweakMulVerify(const CPubKey& untweaked, const uint256& tweak) const
{
assert(this->IsCompressed());
secp256k1_pubkey pk;
if (!secp256k1_ec_pubkey_parse(secp256k1_context_verify, &pk, untweaked.data(), untweaked.size())) return false;
if (!secp256k1_ec_pubkey_tweak_mul(secp256k1_context_verify, &pk, tweak.data())) return false;
unsigned char out_pk[CPubKey::COMPRESSED_SIZE];
size_t out_len = CPubKey::COMPRESSED_SIZE;
if (!secp256k1_ec_pubkey_serialize(secp256k1_context_verify, out_pk, &out_len, &pk, SECP256K1_EC_COMPRESSED)) return false;
return *this == CPubKey(out_pk, out_pk + out_len);
}
bool CPubKey::Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig) const {
if (!IsValid())
return false;