python的AES解密CBC模式怎么移植到golang啊。挠头

aes 是分组密码，一个block相当于一个组

golang 对应的搞定：

func AesCBCDncrypt(encryptData, key []byte) ([]byte,error) {
    block, err := aes.NewCipher(key)
    if err != nil {
        panic(err)
    }

    blockSize := kIvSize

    if len(encryptData) < blockSize {
        panic("ciphertext too short")
    }
    //iv := encryptData[:blockSize]
    iv := encryptData[:kIvSize]
    encryptData = encryptData[blockSize:len(encryptData)-kHashSize]

    // CBC mode always works in whole blocks.
    if len(encryptData)%blockSize != 0 {
        panic("ciphertext is not a multiple of the block size")
    }

    mode := cipher.NewCBCDecrypter(block, iv)

    // CryptBlocks can work in-place if the two arguments are the same.
    mode.CryptBlocks(encryptData, encryptData)
    //解填充
    encryptData = PKCS7UnPadding(encryptData)
    return encryptData,nil
}
func PKCS7UnPadding(origData []byte) []byte {
    length := len(origData)
    unpadding := int(origData[length-1])
    return origData[:(length - unpadding)]
}