Pycrypto实现AES加解密

JS实现AES过程。

function getAesString(str,keyObj) {
    var lengthKeyObj = keyObj||get_rand_key(0);
    var key = CryptoJS.enc.Hex.parse(lengthKeyObj.rand_key);
    var iv = CryptoJS.enc.Latin1.parse("1234567890abcdef");
    var encrypted = CryptoJS.AES.encrypt(str, key, {
        iv: iv,
        mode: CryptoJS.mode.CBC,
        padding: CryptoJS.pad.Pkcs7
    });
    var cipher_text = encrypted.ciphertext.toString();
    return lengthKeyObj.key_index + cipher_text;
}

以下通过python pycrypto库实现

python 2.7没有pycrypto标准库，需要另外安装。

#pkcs7
BS = AES.block_size
pad = lambda s: s + (BS - len(s) % BS) * chr(BS - len(s) % BS)
unpad = lambda s : s[0:-ord(s[-1])]

key = os.urandom(16) #random
text = ‘password‘ 

cipher = AES.new(key)
encrypted = cipher.encrypt(pad(text)).encode(‘hex‘)
print encrypted‘
decrypted = unpad(cipher.decrypt(encrypted.decode(‘hex‘)))
print decrypted  

修改代码如下：

BS = AES.block_size
pad = lambda s: s + (BS - len(s) % BS) * chr(BS - len(s) % BS)
unpad = lambda s : s[0:-ord(s[-1])]

org_pass = ‘1234567890abcdef‘
mode = AES.MODE_CBC
iv = ‘1234567890abcdef‘

cipher = AES.new( aes_rand_key.decode(‘hex‘),mode,iv)
encrypted = cipher.encrypt(pad(org_pass)).encode(‘hex‘)

decrypted = unpad(cipher.decrypt(encrypted.decode(‘hex‘)))
print decrypted 

login_pass = rand_key2 + encrypted