【代碼筆記】iOS-使用MD5加密

一，代碼。

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    NSLog(@"---%@----",[self md5:@"123456"]);
    
}
//將訂單號使用md5加密
-(NSString *) md5:(NSString *)str
{
    const char *cStr = [str UTF8String];
    unsigned char result[16]= "0123456789abcdef";
    CC_MD5(cStr, (CC_LONG)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]
            ];
}

二，輸出。

2015-10-23 10:51:21.590 使用MD5加密[3983:93105] ---E10ADC3949BA59ABBE56E057F20F883E----