AES128 encryption is not properly working with key and iv and giving different output than android produces after same encryption

Question

I am using below code to encrypt NSData with AES128 CBC encryption with no padding with key and IV, its not giving the same output as android whereas android's output is correct one.

- (NSData*)AES128Encrypt:(NSData *)dataToEncrypt iv:(NSString *)iv key:(NSString *)key {
    char keyPtr[kCCKeySizeAES128 + 1];
    bzero(keyPtr, sizeof(keyPtr));
    [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding];

    char ivPtr[kCCBlockSizeAES128 + 1];
    bzero(ivPtr, sizeof(ivPtr));
    if (iv) {
        [iv getCString:ivPtr maxLength:sizeof(ivPtr) encoding:NSUTF8StringEncoding];
    }

    NSUInteger dataLength = [dataToEncrypt length];
    size_t bufferSize = dataLength + kCCBlockSizeAES128;
    void *buffer = malloc(bufferSize);

    size_t numBytesEncrypted = 0;
    CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt,
                                          kCCAlgorithmAES128,
                                          ccNoPadding,
                                          keyPtr,
                                          kCCBlockSizeAES128,
                                          ivPtr,
                                          [dataToEncrypt bytes],
                                          dataLength,
                                          buffer,
                                          bufferSize,
                                          &numBytesEncrypted);
    if (cryptStatus == kCCSuccess) {
        return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted];
    }

    free(buffer);
    return nil;
}

Answer 1

您需要对Key和IV进行Base64解码。