dash/src/bip39.h
UdjinM6 27f3218de9 HD wallet (#1405)
* HD wallet

Minimal set of changes (no refactoring) backported from Bitcoin upstream to make HD wallets work in Dash 0.12.1.x+

* minimal bip44 (hardcoded account and change)

* minimal bip39

Additional cmd-line options for new wallet:
-mnemonic
-mnemonicpassphrase

* Do not recreate HD wallet on encryption

Adjusted keypool.py test

* Do not store any private keys for hd wallet besides the master one

Derive all keys on the fly.
Original idea/implementation - btc PR9298, backported and improved

* actually use bip39

* pbkdf2 test

* backport wallet-hd.py test

* Allow specifying hd seed, add dumphdseed rpc, fix bugs

- -hdseed cmd-line param to specify HD seed on wallet creation
- dumphdseed rpc to dump HD seed
- allow seed of any size
- fix dumpwallet rpc bug (wasn't decrypting HD seed)
- print HD seed and extended public masterkey on dumpwallet

* top up keypool on HD wallet encryption

* split HD chain: external/internal

* add missing cs_wallet lock in init.cpp

* fix `const char *` issues (use strings)

* default mnemonic passphrase is an empty string in all cases

* store mnemonic/mnemonicpassphrase

replace dumphdseed with dumphdinfo

* Add fCrypted flag to CHDChain

* prepare internal structures for multiple HD accounts

(plus some code cleanup)

* use secure allocator for storing sensitive HD data

* use secure strings for mnemonic(passphrase)

* small fix in GenerateNewHDChain

* use 24 words for mnemonic by default

* make sure mnemonic passphrase provided by user does not exceed 256 symbols

* more usage of secure allocators and memory_cleanse

* code cleanup

* rename: CSecureVector -> SecureVector

* add missing include

* fix warning in rpcdump.cpp

* refactor mnemonic_check (also fix a bug)

* move bip39 functions to CMnemonic

* Few fixes for CMnemonic:
- use `SecureVector` for data, bits, seed
- `Check` should return bool

* init vectors with desired size where possible
2017-05-29 14:51:40 +03:00

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/**
* Copyright (c) 2013-2014 Tomas Dzetkulic
* Copyright (c) 2013-2014 Pavol Rusnak
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef DASH_BIP39_H
#define DASH_BIP39_H
#include "support/allocators/secure.h"
class CMnemonic
{
public:
static SecureString Generate(int strength); // strength in bits
static SecureString FromData(const SecureVector& data, int len);
static bool Check(SecureString mnemonic);
// passphrase must be at most 256 characters or code may crash
static void ToSeed(SecureString mnemonic, SecureString passphrase, SecureVector& seedRet);
};
#endif