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MD5加密,Base64加密/解密,AES加密/解密

1.从github上下载GTMBase64-master和AESCrypt-ObjC-master导入工程,如下图所示。

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2.使用前的配置及注意事项:

 (1) 在build phases中的GTMBase64.m需要设置 -fno-objc-arc

 (2) 在#import "NSString+Base64.m”文件中导入   #import <Foundation/Foundation.h>

 (3)在#import "GTMBase64.m”文件中添加          #import <CommonCrypto/CommonCrypto.h>

3. CusMD5.h 和 CusMD5.m 文件

#import <Foundation/Foundation.h>@interface CusMD5 : NSObject+ (NSString *)md5String:(NSString *)str;@end#import "CusMD5.h"#import <CommonCrypto/CommonDigest.h>@implementation CusMD5+ (NSString *)md5String:(NSString *)str {    const char *original_str = [str UTF8String];    unsigned char result[CC_MD5_DIGEST_LENGTH];    CC_MD5(original_str, strlen(original_str), result);    NSMutableString *hash = [NSMutableString string];    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)        [hash appendFormat:@"%02X", result[i]];    return [hash lowercaseString]; }@end

 

   ---> MD5只能称为一种不可逆的加密算法,只能用作一些检验过程,不能恢复其原文。

 

4. 基本使用

#import "ViewController.h"#import "CusMD5.h"#import "GTMBase64.h"#import "AESCrypt.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    //要加密的字符串    NSString *strForEn = @"需要加密字符串";        //md5加密    NSString *strEnRes = [CusMD5 md5String:strForEn];    NSLog(@"md5 加密: %@",strEnRes);        //base64加密    NSData *dataEn = [strForEn dataUsingEncoding:NSUTF8StringEncoding];    NSData *dataEnRes = [GTMBase64 encodeData:dataEn];    //把加密结果转成string    NSString *base64EnRes = [[NSString alloc] initWithData:dataEnRes encoding:NSUTF8StringEncoding];    NSLog(@"base64加密: %@",base64EnRes);        //base64解密    NSData *resDeBase64 = [GTMBase64 decodeData:dataEnRes];    NSString *strDeBase64 = [[NSString alloc] initWithData:resDeBase64 encoding:NSUTF8StringEncoding];    NSLog(@"base64解密: %@",strDeBase64);    //aes 加密    NSString *strAESEnRes = [AESCrypt encrypt:strForEn password:@"secret"];    NSLog(@"aes 加密: %@",strAESEnRes);        //aes 解密    NSString *strAESDeRes = [AESCrypt decrypt:strAESEnRes password:@"secret"];    NSLog(@"aes 解密: %@",strAESDeRes);}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end

 

MD5加密,Base64加密/解密,AES加密/解密