/*

 Password Encryptor

 Copyright 2013 Thincast Technologies GmbH, Author: Dorian Johnson

 This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.

 If a copy of the MPL was not distributed with this file, You can obtain one at

 http://mozilla.org/MPL/2.0/.

 */

/* Encrypts data using AES 128 with a 256 bit key derived using PBKDF2-HMAC-SHA1  */

#import <Foundation/Foundation.h>

// Encryption block cipher config

#define TSXEncryptorBlockCipherAlgo kCCAlgorithmAES128

#define TSXEncryptorBlockCipherKeySize kCCKeySizeAES256

#define TSXEncryptorBlockCipherOptions kCCOptionPKCS7Padding

#define TSXEncryptorBlockCipherBlockSize 16

// Key generation: If any of these are changed, existing password stores will no longer work

#define TSXEncryptorPBKDF2Rounds 100

#define TSXEncryptorPBKDF2Salt "9D¶3L}S¿lA[e€3C«"

#define TSXEncryptorPBKDF2SaltLen TSXEncryptorBlockCipherOptions

#define TSXEncryptorPBKDF2KeySize TSXEncryptorBlockCipherKeySize

@interface Encryptor : NSObject

{

  @private

	NSData *_encryption_key;

	NSString *_plaintext_password;

}

@property(readonly) NSString *plaintextPassword;

- (id)initWithPassword:(NSString *)plaintext_password;

- (NSData *)encryptData:(NSData *)plaintext_data;

- (NSData *)decryptData:(NSData *)encrypted_data;

- (NSData *)encryptString:(NSString *)plaintext_string;

- (NSString *)decryptString:(NSData *)encrypted_string;

@end