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| 关键词： nbsp content string encryption KEY NSString stringWithFormat self 加密 decrypt |
有时候项目可能要用到加解密，以此来保护用户数据的安全性。下面我就来介绍AES的加解密。闲话不多说，直接上代码。 [objc] view plaincopy// // ViewController.m // test // // Created by yons on 14-8-7. // Copyright (c) 2014年 yons. All rights reserved. // #import "ViewController.h" #import "TableViewController.h" #import "SecurityUtil.h" #import "GTMBase64.h" #define KEY @"ABCDEFGHIJKLMNOP" //key可修改 @interface ViewController () { UIButton *encryption; UIButton *decrypt; UITextField *content; UILabel *Before; UILabel *after; UILabel *key; } @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. self.view.backgroundColor = [UIColor whiteColor]; content = [[UITextField alloc] initWithFrame:CGRectMake(20, 60, 280, 40)]; content.backgroundColor = [UIColor whiteColor]; [self setBorder:content.layer]; content.placeholder = @" 请输入加密或解密的字符串"; [self.view addSubview:content]; encryption = [[UIButton alloc] initWithFrame:CGRectMake(60, 125,80, 40)]; [encryption setTitle:@"加密" forState:UIControlStateNormal] ; encryption.backgroundColor = [UIColor blackColor]; [encryption addTarget:self action:@selector(Encryption) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:encryption]; decrypt = [[UIButton alloc] initWithFrame:CGRectMake(175, 125,80, 40)]; [decrypt setTitle:@"解密" forState:UIControlStateNormal] ; decrypt.backgroundColor = [UIColor blackColor]; [decrypt addTarget:self action:@selector(Decrypt) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:decrypt]; key = [[UILabel alloc] initWithFrame:CGRectMake(20, 190, 290, 20)]; Before = [[UILabel alloc] initWithFrame:CGRectMake(20, 220, 290, 40)]; Before.lineBreakMode = YES; Before.numberOfLines = 0; after = [[UILabel alloc] initWithFrame:CGRectMake(20, 270, 280, 40)]; after.lineBreakMode = YES; after.numberOfLines = 0; [key setFont:[UIFont fontWithName:@"Arial" size:14]]; [Before setFont:[UIFont fontWithName:@"Arial" size:14]]; [after setFont:[UIFont fontWithName:@"Arial" size:14]]; [self.view addSubview:key]; [self.view addSubview:Before]; [self.view addSubview:after]; } // 加边框 - (void) setBorder: (CALayer*) layer { [layer setMasksToBounds:YES]; [layer setCornerRadius:5.0]; //设置矩圆角半径 [layer setBorderWidth:0.7]; //边框宽度 [layer setBorderColor:[[UIColor lightGrayColor] CGColor]]; } //加密 - (void) Encryption { if ([content.text isEqualToString:@""]) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"温馨提示！" message:@"亲，你还没有输入任何内容！" delegate:self cancelButtonTitle:@"确 定" otherButtonTitles:nil, nil nil]; [alert show]; } else { NSString *string = [SecurityUtil encryptAESData:content.text app_key:KEY]; key.text = [NSString stringWithFormat:@"加密key：%@",KEY]; Before.text = [NSString stringWithFormat:@"加密前：%@",content.text]; after.text = [NSString stringWithFormat:@"加密后：%@",string]; NSLog(@"string：%@", string); } } //解密 - (void) Decrypt { if ([content.text isEqualToString:@""]) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"温馨提示！" message:@"亲，你还没有输入任何内容！" delegate:self cancelButtonTitle:@"确 定" otherButtonTitles:nil, nil nil]; [alert show]; } else { NSData *EncryptData = [GTMBase64 decodeString:content.text]; //解密前进行GTMBase64编码 NSString * string = [SecurityUtil decryptAESData:EncryptData app_key:KEY]; key.text = [NSString stringWithFormat:@"解密key：%@",KEY]; Before.text = [NSString stringWithFormat:@"解密前：%@",content.text]; if ([string isEqualToString:@""] | [string isEqualToString:nil]) { string = @"解密失败，亲，请输入加密后的字符串！"; } after.text = [NSString stringWithFormat:@"解密后：%@",string]; NSLog(@"string：%@", string); } } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end 最后附上Demo的下载地址：AES加解密Demo（点击下载） |
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