TPDummyEncrypter.m   [plain text]

/*
 * Copyright (c) 2017 Apple Inc. All Rights Reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
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 *
 * @APPLE_LICENSE_HEADER_END@
 */

#import "TPDummyEncrypter.h"
#import "TPDummyDecrypter.h"

@interface TPDummyEncrypter ()
@property (nonatomic, strong) NSData *decryptionKey;
@end

@implementation TPDummyEncrypter

+ (instancetype)dummyEncrypterWithKey:(NSData *)key
{
    TPDummyEncrypter *enc = [[TPDummyEncrypter alloc] init];
    enc.decryptionKey = key;
    return enc;
}

- (nullable NSData *)encryptData:(NSData *)plaintext error:(NSError **)error
{
    // It's just XOR with rotating key, so "encryption" == "decryption"
    return [[TPDummyDecrypter dummyDecrypter] decryptData:plaintext
                                                  withKey:self.decryptionKey
                                                    error:error];
}

@end