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Merge pull request #3598

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b21bc00 Wallet: added methods to sign and verify arbitrary message with multisig public signer's key (libwallet & wallet api) (naughtyfox)
This commit is contained in:
luigi1111
2018-06-08 14:40:06 -05:00
parent 112f3678bc b21bc00704
commit 00635bd68b
5 changed files with 113 additions and 0 deletions
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src/wallet/wallet2.cpp
+36
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@@ -115,6 +115,8 @@ using namespace cryptonote;
#define STAGENET_SEGREGATION_FORK_HEIGHT 1000000
#define SEGREGATION_FORK_VICINITY 1500 /* blocks */
static const std::string MULTISIG_SIGNATURE_MAGIC = "SigMultisigPkV1";
namespace
{
@@ -9282,6 +9284,40 @@ bool wallet2::verify(const std::string &data, const cryptonote::account_public_a
memcpy(&s, decoded.data(), sizeof(s));
return crypto::check_signature(hash, address.m_spend_public_key, s);
}
std::string wallet2::sign_multisig_participant(const std::string& data) const
{
CHECK_AND_ASSERT_THROW_MES(m_multisig, "Wallet is not multisig");
crypto::hash hash;
crypto::cn_fast_hash(data.data(), data.size(), hash);
const cryptonote::account_keys &keys = m_account.get_keys();
crypto::signature signature;
crypto::generate_signature(hash, get_multisig_signer_public_key(), keys.m_spend_secret_key, signature);
return MULTISIG_SIGNATURE_MAGIC + tools::base58::encode(std::string((const char *)&signature, sizeof(signature)));
}
bool wallet2::verify_with_public_key(const std::string &data, const crypto::public_key &public_key, const std::string &signature) const
{
if (signature.size() < MULTISIG_SIGNATURE_MAGIC.size() || signature.substr(0, MULTISIG_SIGNATURE_MAGIC.size()) != MULTISIG_SIGNATURE_MAGIC) {
MERROR("Signature header check error");
return false;
}
crypto::hash hash;
crypto::cn_fast_hash(data.data(), data.size(), hash);
std::string decoded;
if (!tools::base58::decode(signature.substr(MULTISIG_SIGNATURE_MAGIC.size()), decoded)) {
MERROR("Signature decoding error");
return false;
}
crypto::signature s;
if (sizeof(s) != decoded.size()) {
MERROR("Signature decoding error");
return false;
}
memcpy(&s, decoded.data(), sizeof(s));
return crypto::check_signature(hash, public_key, s);
}
//----------------------------------------------------------------------------------------------------
crypto::public_key wallet2::get_tx_pub_key_from_received_outs(const tools::wallet2::transfer_details &td) const
{