text: //
  //  BTKey+Bitcoinj.h
  //  bitheri
  //
  //  Copyright 2014 http://Bither.net
  //
  //  Licensed under the Apache License, Version 2.0 (the "License");
  //  you may not use this file except in compliance with the License.
  //  You may obtain a copy of the License at
  //
  //    http://www.apache.org/licenses/LICENSE-2.0
  //
  //  Unless required by applicable law or agreed to in writing, software
  //  distributed under the License is distributed on an "AS IS" BASIS,
  //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  //  See the License for the specific language governing permissions and
  //  limitations under the License.
  
  #import <Foundation/Foundation.h>
  #import "BTKey.h"
  
  @interface BTKey (Bitcoinj)
  
  + (instancetype)keyWithBitcoinj:(NSString *)key andPassphrase:(NSString *)passphrase;
  
  - (NSString *)bitcoinjKeyWithPassphrase:(NSString *)passphrase andSalt:(NSData *)salt andIV:(NSData *)iv flag:(uint8_t)flag;
  
  //+(NSString *)reEncryptPrivKeyWithOldPassphrase:(NSString * )encryptPrivKey oldPassphrase:(NSString *)oldPassphrase andNewPassphrase:(NSString *)newPassphrase;
  //
  //+ (NSData *)saltWithBitcoinj:(NSString *)key;
  //+ (NSData *)ivWithBitcoinj:(NSString *)key;
  
  + (BOOL)isXRandom:(NSString *)encryptPrivKey;
  
  @end