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74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
// Copyright (c) 2014-2019 The Dash Core developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "base58.h"
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#include "hash.h"
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#include "validation.h" // For strMessageMagic
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#include "messagesigner.h"
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#include "tinyformat.h"
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#include "utilstrencodings.h"
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bool CMessageSigner::GetKeysFromSecret(const std::string& strSecret, CKey& keyRet, CPubKey& pubkeyRet)
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{
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CBitcoinSecret vchSecret;
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if(!vchSecret.SetString(strSecret)) return false;
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keyRet = vchSecret.GetKey();
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pubkeyRet = keyRet.GetPubKey();
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return true;
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}
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bool CMessageSigner::SignMessage(const std::string& strMessage, std::vector<unsigned char>& vchSigRet, const CKey& key)
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{
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CHashWriter ss(SER_GETHASH, 0);
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ss << strMessageMagic;
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ss << strMessage;
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return CHashSigner::SignHash(ss.GetHash(), key, vchSigRet);
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}
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bool CMessageSigner::VerifyMessage(const CPubKey& pubkey, const std::vector<unsigned char>& vchSig, const std::string& strMessage, std::string& strErrorRet)
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{
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return VerifyMessage(pubkey.GetID(), vchSig, strMessage, strErrorRet);
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}
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bool CMessageSigner::VerifyMessage(const CKeyID& keyID, const std::vector<unsigned char>& vchSig, const std::string& strMessage, std::string& strErrorRet)
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{
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CHashWriter ss(SER_GETHASH, 0);
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ss << strMessageMagic;
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ss << strMessage;
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return CHashSigner::VerifyHash(ss.GetHash(), keyID, vchSig, strErrorRet);
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}
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bool CHashSigner::SignHash(const uint256& hash, const CKey& key, std::vector<unsigned char>& vchSigRet)
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{
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return key.SignCompact(hash, vchSigRet);
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}
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bool CHashSigner::VerifyHash(const uint256& hash, const CPubKey& pubkey, const std::vector<unsigned char>& vchSig, std::string& strErrorRet)
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{
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return VerifyHash(hash, pubkey.GetID(), vchSig, strErrorRet);
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}
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bool CHashSigner::VerifyHash(const uint256& hash, const CKeyID& keyID, const std::vector<unsigned char>& vchSig, std::string& strErrorRet)
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{
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CPubKey pubkeyFromSig;
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if(!pubkeyFromSig.RecoverCompact(hash, vchSig)) {
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strErrorRet = "Error recovering public key.";
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return false;
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}
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if(pubkeyFromSig.GetID() != keyID) {
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strErrorRet = strprintf("Keys don't match: pubkey=%s, pubkeyFromSig=%s, hash=%s, vchSig=%s",
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keyID.ToString(), pubkeyFromSig.GetID().ToString(), hash.ToString(),
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EncodeBase64(&vchSig[0], vchSig.size()));
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return false;
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}
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return true;
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}
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