def _decrypt(self, joinRN, aes_key, aes_iv):
"""解密
:param joinRN:
:return:
"""
maxbuf = 8192
a_key = aes_key.encode('iso-8859-15')
a_iv = aes_iv.encode('iso-8859-15')
crypto = AESCrypto(a_key, a_iv)
try:
fileObject = open(joinRN, 'rb')
fileStr = fileObject.read()
fileObject.close()
print(fileStr)
data_decrypt = crypto.cbc_decrypt(fileStr)
fileObject = open(joinRN, 'wb')
# fileObject.write(bytes(data_decrypt))
fileObject.write(bytes(data_decrypt, 'utf-8'))
fileObject.close()
return data_decrypt
except PermissionError:
print('解密时文件被占用，等待1秒再读取')
time.sleep(1)
self._decrypt(joinRN, aes_key, aes_iv)
def decrypt(word, key='LXJMTZCVFKQZNQ2J'):
try:
word = word.encode('utf-8')
crypto = AESCrypto(key, key)
data = base64.b64decode(word)
return crypto.decrypt(data)
except Exception as e:
print(str(e))
raise PubErrorCustom("请求格式有误!")
def decrypt(self, encryptedData, iv):
# base64 decode
sessionKey = base64.b64decode(self.sessionKey)
encryptedData = base64.b64decode(encryptedData)
iv = base64.b64decode(iv)
cipher = AESCrypto(sessionKey, iv)
decrypted = json.loads(cipher.decrypt(encryptedData))
if decrypted['watermark']['appid'] != self.appId:
raise Exception('Invalid Buffer')
return decrypted
def decrypt(self, text, appid):
"""对解密后的明文进行补位删除
@param text: 密文
@return: 删除填充补位后的明文
"""
try:
cryptor = AESCrypto(self.key, self.key[:16])
# 使用BASE64对密文进行解码，然后AES-CBC解密
plain_text = cryptor.decrypt(base64.b64decode(text))
except Exception as e:
# print(e)
raise Exception(ierror.WXBizMsgCrypt_DecryptAES_Error)
try:
plain_text = "<xml>" + plain_text.split("<xml>")[1]
xml_content = plain_text.split("</xml>")[0] + '</xml>'
from_appid = plain_text.split("</xml>")[1]
except Exception as e:
raise Exception(ierror.WXBizMsgCrypt_IllegalBuffer)
if from_appid != appid:
raise Exception(ierror.WXBizMsgCrypt_ValidateAppid_Error)
return xml_content
def encrypt(self, text, appid):
"""对明文进行加密
@param text: 需要加密的明文
@return: 加密得到的字符串
"""
# 16位随机字符串添加到明文开头
len_str = struct.pack("I", socket.htonl(len(text.encode())))
text = self.get_random_str() + len_str + text.encode() + appid
# 使用自定义的填充方式对明文进行补位填充
pkcs7 = PKCS7Encoder()
text = pkcs7.encode(text)
# 加密
cryptor = AESCrypto(self.key, self.key[:16])
try:
ciphertext = cryptor.encrypt(text, mode='cbc')
# 使用BASE64对加密后的字符串进行编码
return ierror.WXBizMsgCrypt_OK, base64.b64encode(
ciphertext).decode('utf8')
except Exception as e:
#print(e)
return ierror.WXBizMsgCrypt_EncryptAES_Error, None
def encrypt(word, key='LXJMTZCVFKQZNQ2J'):
crypto = AESCrypto(key, key)
data = crypto.encrypt(word, mode='cbc')
return base64.b64encode(data)
import time
def decrypt(word):
word = word.encode('utf-8')
crypto = AESCrypto(key, key)
data = base64.b64decode(word)
return crypto.decrypt(data)
def encrypt(word):
crypto = AESCrypto(key, key)
data = crypto.encrypt(word, mode='cbc')
return base64.b64encode(data)