wallet: move crypter to wallet

1 files changed, 0 insertions, 292 deletions

diff --git a/src/crypter.cpp b/src/crypter.cpp
deleted file mode 100644
index c7f7e21679..0000000000
--- a/src/crypter.cpp
+++ /dev/null
@@ -1,292 +0,0 @@
-// Copyright (c) 2009-2013 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#include "crypter.h"
-
-#include "script/script.h"
-#include "script/standard.h"
-#include "util.h"
-
-#include <string>
-#include <vector>
-#include <boost/foreach.hpp>
-#include <openssl/aes.h>
-#include <openssl/evp.h>
-
-bool CCrypter::SetKeyFromPassphrase(const SecureString& strKeyData, const std::vector<unsigned char>& chSalt, const unsigned int nRounds, const unsigned int nDerivationMethod)
-{
-    if (nRounds < 1 || chSalt.size() != WALLET_CRYPTO_SALT_SIZE)
-        return false;
-
-    int i = 0;
-    if (nDerivationMethod == 0)
-        i = EVP_BytesToKey(EVP_aes_256_cbc(), EVP_sha512(), &chSalt[0],
-                          (unsigned char *)&strKeyData[0], strKeyData.size(), nRounds, chKey, chIV);
-
-    if (i != (int)WALLET_CRYPTO_KEY_SIZE)
-    {
-        memory_cleanse(chKey, sizeof(chKey));
-        memory_cleanse(chIV, sizeof(chIV));
-        return false;
-    }
-
-    fKeySet = true;
-    return true;
-}
-
-bool CCrypter::SetKey(const CKeyingMaterial& chNewKey, const std::vector<unsigned char>& chNewIV)
-{
-    if (chNewKey.size() != WALLET_CRYPTO_KEY_SIZE || chNewIV.size() != WALLET_CRYPTO_KEY_SIZE)
-        return false;
-
-    memcpy(&chKey[0], &chNewKey[0], sizeof chKey);
-    memcpy(&chIV[0], &chNewIV[0], sizeof chIV);
-
-    fKeySet = true;
-    return true;
-}
-
-bool CCrypter::Encrypt(const CKeyingMaterial& vchPlaintext, std::vector<unsigned char> &vchCiphertext)
-{
-    if (!fKeySet)
-        return false;
-
-    // max ciphertext len for a n bytes of plaintext is
-    // n + AES_BLOCK_SIZE - 1 bytes
-    int nLen = vchPlaintext.size();
-    int nCLen = nLen + AES_BLOCK_SIZE, nFLen = 0;
-    vchCiphertext = std::vector<unsigned char> (nCLen);
-
-    EVP_CIPHER_CTX ctx;
-
-    bool fOk = true;
-
-    EVP_CIPHER_CTX_init(&ctx);
-    if (fOk) fOk = EVP_EncryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, chKey, chIV) != 0;
-    if (fOk) fOk = EVP_EncryptUpdate(&ctx, &vchCiphertext[0], &nCLen, &vchPlaintext[0], nLen) != 0;
-    if (fOk) fOk = EVP_EncryptFinal_ex(&ctx, (&vchCiphertext[0]) + nCLen, &nFLen) != 0;
-    EVP_CIPHER_CTX_cleanup(&ctx);
-
-    if (!fOk) return false;
-
-    vchCiphertext.resize(nCLen + nFLen);
-    return true;
-}
-
-bool CCrypter::Decrypt(const std::vector<unsigned char>& vchCiphertext, CKeyingMaterial& vchPlaintext)
-{
-    if (!fKeySet)
-        return false;
-
-    // plaintext will always be equal to or lesser than length of ciphertext
-    int nLen = vchCiphertext.size();
-    int nPLen = nLen, nFLen = 0;
-
-    vchPlaintext = CKeyingMaterial(nPLen);
-
-    EVP_CIPHER_CTX ctx;
-
-    bool fOk = true;
-
-    EVP_CIPHER_CTX_init(&ctx);
-    if (fOk) fOk = EVP_DecryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, chKey, chIV) != 0;
-    if (fOk) fOk = EVP_DecryptUpdate(&ctx, &vchPlaintext[0], &nPLen, &vchCiphertext[0], nLen) != 0;
-    if (fOk) fOk = EVP_DecryptFinal_ex(&ctx, (&vchPlaintext[0]) + nPLen, &nFLen) != 0;
-    EVP_CIPHER_CTX_cleanup(&ctx);
-
-    if (!fOk) return false;
-
-    vchPlaintext.resize(nPLen + nFLen);
-    return true;
-}
-
-
-static bool EncryptSecret(const CKeyingMaterial& vMasterKey, const CKeyingMaterial &vchPlaintext, const uint256& nIV, std::vector<unsigned char> &vchCiphertext)
-{
-    CCrypter cKeyCrypter;
-    std::vector<unsigned char> chIV(WALLET_CRYPTO_KEY_SIZE);
-    memcpy(&chIV[0], &nIV, WALLET_CRYPTO_KEY_SIZE);
-    if(!cKeyCrypter.SetKey(vMasterKey, chIV))
-        return false;
-    return cKeyCrypter.Encrypt(*((const CKeyingMaterial*)&vchPlaintext), vchCiphertext);
-}
-
-static bool DecryptSecret(const CKeyingMaterial& vMasterKey, const std::vector<unsigned char>& vchCiphertext, const uint256& nIV, CKeyingMaterial& vchPlaintext)
-{
-    CCrypter cKeyCrypter;
-    std::vector<unsigned char> chIV(WALLET_CRYPTO_KEY_SIZE);
-    memcpy(&chIV[0], &nIV, WALLET_CRYPTO_KEY_SIZE);
-    if(!cKeyCrypter.SetKey(vMasterKey, chIV))
-        return false;
-    return cKeyCrypter.Decrypt(vchCiphertext, *((CKeyingMaterial*)&vchPlaintext));
-}
-
-static bool DecryptKey(const CKeyingMaterial& vMasterKey, const std::vector<unsigned char>& vchCryptedSecret, const CPubKey& vchPubKey, CKey& key)
-{
-    CKeyingMaterial vchSecret;
-    if(!DecryptSecret(vMasterKey, vchCryptedSecret, vchPubKey.GetHash(), vchSecret))
-        return false;
-
-    if (vchSecret.size() != 32)
-        return false;
-
-    key.Set(vchSecret.begin(), vchSecret.end(), vchPubKey.IsCompressed());
-    return key.VerifyPubKey(vchPubKey);
-}
-
-bool CCryptoKeyStore::SetCrypted()
-{
-    LOCK(cs_KeyStore);
-    if (fUseCrypto)
-        return true;
-    if (!mapKeys.empty())
-        return false;
-    fUseCrypto = true;
-    return true;
-}
-
-bool CCryptoKeyStore::Lock()
-{
-    if (!SetCrypted())
-        return false;
-
-    {
-        LOCK(cs_KeyStore);
-        vMasterKey.clear();
-    }
-
-    NotifyStatusChanged(this);
-    return true;
-}
-
-bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
-{
-    {
-        LOCK(cs_KeyStore);
-        if (!SetCrypted())
-            return false;
-
-        bool keyPass = false;
-        bool keyFail = false;
-        CryptedKeyMap::const_iterator mi = mapCryptedKeys.begin();
-        for (; mi != mapCryptedKeys.end(); ++mi)
-        {
-            const CPubKey &vchPubKey = (*mi).second.first;
-            const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
-            CKey key;
-            if (!DecryptKey(vMasterKeyIn, vchCryptedSecret, vchPubKey, key))
-            {
-                keyFail = true;
-                break;
-            }
-            keyPass = true;
-            if (fDecryptionThoroughlyChecked)
-                break;
-        }
-        if (keyPass && keyFail)
-        {
-            LogPrintf("The wallet is probably corrupted: Some keys decrypt but not all.");
-            assert(false);
-        }
-        if (keyFail || !keyPass)
-            return false;
-        vMasterKey = vMasterKeyIn;
-        fDecryptionThoroughlyChecked = true;
-    }
-    NotifyStatusChanged(this);
-    return true;
-}
-
-bool CCryptoKeyStore::AddKeyPubKey(const CKey& key, const CPubKey &pubkey)
-{
-    {
-        LOCK(cs_KeyStore);
-        if (!IsCrypted())
-            return CBasicKeyStore::AddKeyPubKey(key, pubkey);
-
-        if (IsLocked())
-            return false;
-
-        std::vector<unsigned char> vchCryptedSecret;
-        CKeyingMaterial vchSecret(key.begin(), key.end());
-        if (!EncryptSecret(vMasterKey, vchSecret, pubkey.GetHash(), vchCryptedSecret))
-            return false;
-
-        if (!AddCryptedKey(pubkey, vchCryptedSecret))
-            return false;
-    }
-    return true;
-}
-
-
-bool CCryptoKeyStore::AddCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
-{
-    {
-        LOCK(cs_KeyStore);
-        if (!SetCrypted())
-            return false;
-
-        mapCryptedKeys[vchPubKey.GetID()] = make_pair(vchPubKey, vchCryptedSecret);
-    }
-    return true;
-}
-
-bool CCryptoKeyStore::GetKey(const CKeyID &address, CKey& keyOut) const
-{
-    {
-        LOCK(cs_KeyStore);
-        if (!IsCrypted())
-            return CBasicKeyStore::GetKey(address, keyOut);
-
-        CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
-        if (mi != mapCryptedKeys.end())
-        {
-            const CPubKey &vchPubKey = (*mi).second.first;
-            const std::vector<unsigned char> &vchCryptedSecret = (*mi).second.second;
-            return DecryptKey(vMasterKey, vchCryptedSecret, vchPubKey, keyOut);
-        }
-    }
-    return false;
-}
-
-bool CCryptoKeyStore::GetPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const
-{
-    {
-        LOCK(cs_KeyStore);
-        if (!IsCrypted())
-            return CKeyStore::GetPubKey(address, vchPubKeyOut);
-
-        CryptedKeyMap::const_iterator mi = mapCryptedKeys.find(address);
-        if (mi != mapCryptedKeys.end())
-        {
-            vchPubKeyOut = (*mi).second.first;
-            return true;
-        }
-    }
-    return false;
-}
-
-bool CCryptoKeyStore::EncryptKeys(CKeyingMaterial& vMasterKeyIn)
-{
-    {
-        LOCK(cs_KeyStore);
-        if (!mapCryptedKeys.empty() || IsCrypted())
-            return false;
-
-        fUseCrypto = true;
-        BOOST_FOREACH(KeyMap::value_type& mKey, mapKeys)
-        {
-            const CKey &key = mKey.second;
-            CPubKey vchPubKey = key.GetPubKey();
-            CKeyingMaterial vchSecret(key.begin(), key.end());
-            std::vector<unsigned char> vchCryptedSecret;
-            if (!EncryptSecret(vMasterKeyIn, vchSecret, vchPubKey.GetHash(), vchCryptedSecret))
-                return false;
-            if (!AddCryptedKey(vchPubKey, vchCryptedSecret))
-                return false;
-        }
-        mapKeys.clear();
-    }
-    return true;
-}