/*

 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