diff options
| -rw-r--r-- | src/key.cpp | 23 | ||||
| -rw-r--r-- | src/key.h | 3 | ||||
| -rw-r--r-- | src/walletdb.cpp | 38 | ||||
| -rw-r--r-- | src/walletdb.h | 10 |
4 files changed, 66 insertions, 8 deletions
diff --git a/src/key.cpp b/src/key.cpp index 8ef1c414c4..414845a9da 100644 --- a/src/key.cpp +++ b/src/key.cpp @@ -166,9 +166,12 @@ public: assert(nSize == nSize2); } - bool SetPrivKey(const CPrivKey &privkey) { + bool SetPrivKey(const CPrivKey &privkey, bool fSkipCheck=false) { const unsigned char* pbegin = &privkey[0]; if (d2i_ECPrivateKey(&pkey, &pbegin, privkey.size())) { + if(fSkipCheck) + return true; + // d2i_ECPrivateKey returns true if parsing succeeds. // This doesn't necessarily mean the key is valid. if (EC_KEY_check_key(pkey)) @@ -411,6 +414,24 @@ bool CKey::SignCompact(const uint256 &hash, std::vector<unsigned char>& vchSig) return true; } +bool CKey::Load(CPrivKey &privkey, CPubKey &vchPubKey, bool fSkipCheck=false) { + CECKey key; + if (!key.SetPrivKey(privkey, fSkipCheck)) + return false; + + key.GetSecretBytes(vch); + fCompressed = vchPubKey.IsCompressed(); + fValid = true; + + if (fSkipCheck) + return true; + + if (GetPubKey() != vchPubKey) + return false; + + return true; +} + bool CPubKey::Verify(const uint256 &hash, const std::vector<unsigned char>& vchSig) const { if (!IsValid()) return false; @@ -261,6 +261,9 @@ public: // Derive BIP32 child key. bool Derive(CKey& keyChild, unsigned char ccChild[32], unsigned int nChild, const unsigned char cc[32]) const; + + // Load private key and check that public key matches. + bool Load(CPrivKey &privkey, CPubKey &vchPubKey, bool fSkipCheck); }; struct CExtPubKey { diff --git a/src/walletdb.cpp b/src/walletdb.cpp index 635fda1b42..efcd59d5f1 100644 --- a/src/walletdb.cpp +++ b/src/walletdb.cpp @@ -306,6 +306,8 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue, } CKey key; CPrivKey pkey; + uint256 hash = 0; + if (strType == "key") { wss.nKeys++; @@ -315,14 +317,40 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue, ssValue >> wkey; pkey = wkey.vchPrivKey; } - if (!key.SetPrivKey(pkey, vchPubKey.IsCompressed())) + + // Old wallets store keys as "key" [pubkey] => [privkey] + // ... which was slow for wallets with lots of keys, because the public key is re-derived from the private key + // using EC operations as a checksum. + // Newer wallets store keys as "key"[pubkey] => [privkey][hash(pubkey,privkey)], which is much faster while + // remaining backwards-compatible. + try { - strErr = "Error reading wallet database: CPrivKey corrupt"; - return false; + ssValue >> hash; + } + catch(...){} + + bool fSkipCheck = false; + + if (hash != 0) + { + // hash pubkey/privkey to accelerate wallet load + std::vector<unsigned char> vchKey; + vchKey.reserve(vchPubKey.size() + pkey.size()); + vchKey.insert(vchKey.end(), vchPubKey.begin(), vchPubKey.end()); + vchKey.insert(vchKey.end(), pkey.begin(), pkey.end()); + + if (Hash(vchKey.begin(), vchKey.end()) != hash) + { + strErr = "Error reading wallet database: CPubKey/CPrivKey corrupt"; + return false; + } + + fSkipCheck = true; } - if (key.GetPubKey() != vchPubKey) + + if (!key.Load(pkey, vchPubKey, fSkipCheck)) { - strErr = "Error reading wallet database: CPrivKey pubkey inconsistency"; + strErr = "Error reading wallet database: CPrivKey corrupt"; return false; } if (!pwallet->LoadKey(key, vchPubKey)) diff --git a/src/walletdb.h b/src/walletdb.h index 09ebebe5ac..2d01a5cf74 100644 --- a/src/walletdb.h +++ b/src/walletdb.h @@ -93,8 +93,14 @@ public: if (!Write(std::make_pair(std::string("keymeta"), vchPubKey), keyMeta)) return false; - - return Write(std::make_pair(std::string("key"), vchPubKey), vchPrivKey, false); + + // hash pubkey/privkey to accelerate wallet load + std::vector<unsigned char> vchKey; + vchKey.reserve(vchPubKey.size() + vchPrivKey.size()); + vchKey.insert(vchKey.end(), vchPubKey.begin(), vchPubKey.end()); + vchKey.insert(vchKey.end(), vchPrivKey.begin(), vchPrivKey.end()); + + return Write(std::make_pair(std::string("key"), vchPubKey), std::make_pair(vchPrivKey, Hash(vchKey.begin(), vchKey.end())), false); } bool WriteCryptedKey(const CPubKey& vchPubKey, |