-// Copyright (c) 2011 The Bitcoin Developers
+// Copyright (c) 2009-2012 The Bitcoin Developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef __CRYPTER_H__
#define __CRYPTER_H__
+#include "allocators.h" /* for SecureString */
#include "key.h"
+#include "serialize.h"
const unsigned int WALLET_CRYPTO_KEY_SIZE = 32;
const unsigned int WALLET_CRYPTO_SALT_SIZE = 8;
master key's key as the encryption key (see keystore.[ch]).
*/
+/** Master key for wallet encryption */
class CMasterKey
{
public:
READWRITE(nDeriveIterations);
READWRITE(vchOtherDerivationParameters);
)
- CMasterKey()
- {
- // 25000 rounds is just under 0.1 seconds on a 1.86 GHz Pentium M
- // ie slightly lower than the lowest hardware we need bother supporting
- nDeriveIterations = 25000;
- nDerivationMethod = 0;
- vchOtherDerivationParameters = std::vector<unsigned char>(0);
- }
+ CMasterKey();
};
typedef std::vector<unsigned char, secure_allocator<unsigned char> > CKeyingMaterial;
+/** Encryption/decryption context with key information */
class CCrypter
{
private:
bool fKeySet;
public:
- bool SetKeyFromPassphrase(const std::string &strKeyData, const std::vector<unsigned char>& chSalt, const unsigned int nRounds, const unsigned int nDerivationMethod);
+ bool SetKeyFromPassphrase(const SecureString &strKeyData, const std::vector<unsigned char>& chSalt, const unsigned int nRounds, const unsigned int nDerivationMethod);
bool Encrypt(const CKeyingMaterial& vchPlaintext, std::vector<unsigned char> &vchCiphertext);
bool Decrypt(const std::vector<unsigned char>& vchCiphertext, CKeyingMaterial& vchPlaintext);
bool SetKey(const CKeyingMaterial& chNewKey, const std::vector<unsigned char>& chNewIV);
-
- void CleanKey()
- {
- memset(&chKey, 0, sizeof chKey);
- memset(&chIV, 0, sizeof chIV);
- munlock(&chKey, sizeof chKey);
- munlock(&chIV, sizeof chIV);
- fKeySet = false;
- }
-
- CCrypter()
- {
- fKeySet = false;
- }
-
- ~CCrypter()
- {
- CleanKey();
- }
+ void CleanKey();
+ CCrypter();
+ ~CCrypter();
};
bool EncryptSecret(CKeyingMaterial& vMasterKey, const CSecret &vchPlaintext, const uint256& nIV, std::vector<unsigned char> &vchCiphertext);