iOS常用加密方式

 

 

1MD5

建立MD5類

 

#import @interface CJMD5 : NSObject+(NSString *)md5HexDigest:(NSString *)input;@end

#import CJMD5.h#import @implementation CJMD5+(NSString *)md5HexDigest:(NSString *)input{        const char* str = [input UTF8String];    unsigned char result[CC_MD5_DIGEST_LENGTH];    CC_MD5(str, strlen(str), result);    NSMutableString *ret = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH];        for(int i = 0; iMD5是無法復原的只有加密沒有解密使用方式如下
 
 
NSString *userName = @cerastes;NSString *password = @hello Word;//   MD5加密NSString *md5 = [CJMD5 md5HexDigest:password];NSLog(@%@,md5);

2AES加密
 
AES加密開原始碼git
https://github.com/Gurpartap/AESCrypt-ObjC
使用方法
 
//  AES加密    NSString *encryptedData = [AESCrypt encrypt:userName password:password];//加密    NSString *message = [AESCrypt decrypt:encryptedData password:password]; //解密    NSLog(@加密結果 = %@,encryptedData);    NSLog(@解密結果 = %@,message);

3 BASE64加密
 
 https://code.google.com/p/google-toolbox-for-mac/source/browse/trunk/Foundation/?r=87
添加如下方法
.h
 
+ (NSString*)encodeBase64String:(NSString *)input;+ (NSString*)decodeBase64String:(NSString *)input;+ (NSString*)encodeBase64Data:(NSData *)data;+ (NSString*)decodeBase64Data:(NSData *)data;

.m
 
 
+ (NSString*)encodeBase64String:(NSString * )input {    NSData *data = [input dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];    data = [GTMBase64 encodeData:data];    NSString *base64String = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    return base64String;}+ (NSString*)decodeBase64String:(NSString * )input {    NSData *data = [input dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];    data = [GTMBase64 decodeData:data];    NSString *base64String = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    return base64String;}+ (NSString*)encodeBase64Data:(NSData *)data {    data = [GTMBase64 encodeData:data];    NSString *base64String = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    return base64String;}+ (NSString*)decodeBase64Data:(NSData *)data {    data = [GTMBase64 decodeData:data];    NSString *base64String = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    return base64String;}

使用方法
 
 
//    BASE64加密    NSString *baseEncodeString = [GTMBase64 encodeBase64String:password];    NSString *baseDecodeString = [GTMBase64 decodeBase64String:baseEncodeString];    NSLog(@baseEncodeString = %@,baseEncodeString);    NSLog(@baseDecodeString = %@,baseDecodeString);