64 lines
2.4 KiB
Objective-C
Executable File
64 lines
2.4 KiB
Objective-C
Executable File
//
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// MAIDESEncryptTool.m
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// BellFramework
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//
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// Created by 罗兴志 on 2017/5/4.
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// Copyright © 2017年 罗兴志. All rights reserved.
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//
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#import "MAIDESEncryptTool.h"
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#import <CommonCrypto/CommonCrypto.h>
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#import "Base64.h"
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@implementation MAIDESEncryptTool : NSObject
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const Byte iv[] = {1,2,3,4,5,6,7,8};
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#pragma mark- 加密算法
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+(NSString *) encryptUseDES:(NSString *)plainText key:(NSString *)key
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{
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NSString *ciphertext = nil;
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NSData *textData = [plainText dataUsingEncoding:NSUTF8StringEncoding];
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NSUInteger dataLength = [textData length];
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unsigned char buffer[20000];
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memset(buffer, 0, sizeof(char));
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size_t numBytesEncrypted = 0;
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CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmDES,
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kCCOptionPKCS7Padding|kCCOptionECBMode,
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[key UTF8String], kCCKeySizeDES,
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iv,
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[textData bytes], dataLength,
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buffer, 20000,
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&numBytesEncrypted);
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if (cryptStatus == kCCSuccess) {
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NSData *data = [NSData dataWithBytes:buffer length:(NSUInteger)numBytesEncrypted];
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ciphertext = [Base64 encode:data];
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}
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return ciphertext;
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}
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#pragma mark- 解密算法
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+(NSString *)decryptUseDES:(NSString *)cipherText key:(NSString *)key
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{
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NSString *plaintext = nil;
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NSData *cipherdata = [Base64 decode:cipherText];
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unsigned char buffer[20000];
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memset(buffer, 0, sizeof(char));
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size_t numBytesDecrypted = 0;
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// kCCOptionPKCS7Padding|kCCOptionECBMode 最主要在这步
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CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, kCCAlgorithmDES,
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kCCOptionPKCS7Padding|kCCOptionECBMode,
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[key UTF8String], kCCKeySizeDES,
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iv,
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[cipherdata bytes], [cipherdata length],
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buffer, 20000,
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&numBytesDecrypted);
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if(cryptStatus == kCCSuccess) {
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NSData *plaindata = [NSData dataWithBytes:buffer length:(NSUInteger)numBytesDecrypted];
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plaintext = [[NSString alloc]initWithData:plaindata encoding:NSUTF8StringEncoding];
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}
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return plaintext;
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}
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@end
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