示例代码 - Python

# -*- coding: utf-8 -*-
#pycrypto==2.6.1  # https://www.dlitz.net/software/pycrypto/

import hmac
import hashlib
import base64
import codecs
import random, string

from Crypto.Cipher import AES
from django.conf import settings

class OTCHandler(object):

    CIPHER_KEY_LEN = 16
    OTC_CONFIGURATION = settings.TREASURE_BOX_TOKEN
    ENCRYPTION_METHOD = AES

    # caculate signature by given time

    def sign(self, unixTime):

        message = str(unixTime) + self.OTC_CONFIGURATION['APP_URL']
        signature = base64.b64encode(hmac.new(codecs.encode(self.OTC_CONFIGURATION['APP_SECRET']), codecs.encode(message), hashlib.sha256).digest())


        # return bytes result in string
        return str(signature).split('\'')[1]

    # add padding to message

    def pad(self, s):
        return s + (AES.block_size - len(s) % AES.block_size) * chr(AES.block_size - len(s) % AES.block_size) 


    def encryptUID(self, uid):
        # generate random 16 characters for iv value

        CIPHER_IV = ''.join(random.choice(string.ascii_lowercase + string.digits) for i in range(16))
        encryptedUID = self.encrypt(self.OTC_CONFIGURATION['APP_SECRET'], CIPHER_IV, uid)
        return self.OTC_CONFIGURATION['APP_PASSPHRASE'] + encryptedUID 


    # encrypt input data with given key and iv

    def encrypt(self, key, iv, data):
        if len(key) < self.CIPHER_KEY_LEN:
            numPad = self.CIPHER_KEY_LEN - len(key)
            for i in range(numPad):
                key+='0'
        elif len(key) > self.CIPHER_KEY_LEN:
            key = key[:self.CIPHER_KEY_LEN]

        encryptor = self.ENCRYPTION_METHOD.new(key.encode("utf8"), self.ENCRYPTION_METHOD.MODE_CBC, iv.encode("utf8"))
        base64_EncryptedData = base64.b64encode(encryptor.encrypt(self.pad(data).encode("utf8")))
        base64_IV = base64.b64encode(iv.encode("utf8"))

        # convert bytes result to string

        base64_EncryptedData = str(base64_EncryptedData).split('\'')[1]
        base64_IV = str(base64_IV).split('\'')[1]

        return base64_EncryptedData + ':' + base64_IV

    def appID(self):
      return self.OTC_CONFIGURATION['APP_ID']

    def appURL(self):
        return self.OTC_CONFIGURATION['APP_URL']


    def appKey(self):
        return self.OTC_CONFIGURATION['APP_KEY']