[iOS]MD5加密字符串

来源：互联网发布：学生打印机推荐知乎编辑：程序博客网时间：2024/05/12 19:47

<span style="color:#3366ff;">- (NSString *)md5:(NSString *)str{    const char *cStr = [str UTF8String];    unsigned char result[16];    CC_MD5(cStr, strlen(cStr), result); // This is the md5 call    return [NSString stringWithFormat:        @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",        result[0], result[1], result[2], result[3],         result[4], result[5], result[6], result[7],        result[8], result[9], result[10], result[11],        result[12], result[13], result[14], result[15]        ]; }</span>

- (NSString *)md5:(NSString *)str

{    const char *cStr = [str UTF8String];

  unsigned char result[16];

 CC_MD5(cStr, strlen(cStr), result); // This is the md5 call//输出1//

 return [NSString stringWithFormat://<span style="font-family: Verdana, Arial, Helvetica, sans-serif;">@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",//</span><span style="font-family: Verdana, Arial, Helvetica, sans-serif;">result[0], result[1], result[2], result[3], // result[4], result[5], result[6], result[7],// result[8], result[9], result[10], result[11],//        result[12], result[13], result[14], result[15]//]; </span>

//输出2  简化版    NSMutableString *ret = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH];        for(int i = 0; i<CC_MD5_DIGEST_LENGTH; i++)

{   [ret appendFormat:@"%02X",result];}        return ret;

参考：http://stackoverflow.com/questions/1524604/md5-algorithm-in-objective-c

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