objective-c - iOS 无法识别的选择器发送到实例 0x45e8

Question

下面是我尝试加密数据的代码

输入/调用我的加密方法:

[self myED:@"wcc123" :@"hahaha" :@"yyyy"];

- (NSData*) myED:(NSData*)data :(NSData*) key :(NSData*)iv{

    @try {
        // Try something
        NSLog( @"Original String: %@", data );


        size_t bufferSize = [data length]*2;
        void *buffer = malloc(bufferSize);
        size_t encryptedSize = 0;    
        CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmAES128, kCCOptionPKCS7Padding,                                          
                                              [key bytes], [key length], [iv bytes], [data bytes], [data length],                                          
                                              buffer, bufferSize, &encryptedSize);  
    }
    @catch (NSException * e) {
        NSLog(@"Exception: %@", e); 
    }
    @finally {
        // Added to show finally works as well
    }


    return nil;

}

但是，当尝试运行这段代码时，它会在下面提示我异常

2012-07-03 16:52:44.776 wccTest[930:f803] Exception: -[__NSCFConstantString bytes]:

任何人都可以对此提供帮助/建议吗？

Answer 1

代替

[self myED:@"wcc123" :@"hahaha" :@"yyyy"];

试着打电话

[self myED:[@"wcc123" dataUsingEncoding:NSUTF8StringEncoding] :[@"hahaha" dataUsingEncoding:NSUTF8StringEncoding] :[@"yyyy" dataUsingEncoding:NSUTF8StringEncoding]];