Encryption Description String with AES Python

Hello world. Today i am gonna show you how to encryption and descryption string with AES. Today i've task to create link odoo with encryption, so automatically i must create decryption too. On this case i just use AES for encryption and decryption data, cause i think AES is the best algorithm encryption for now.

Here we go, this is my python function to encryption and decryption data. You can check it, if get wrong with my code. Lol

    def _default_key(self):
        default_key = b'no surprises guy'
        return default_key

    def _key(self, key):
        if len(key) >= 32:
            key = key[:32]
        else:
            key = self._pad(key)
        
        return key
    
    def bs(self):
        bs = 32
        return bs
    
    def _encrypt(self, raw, key):
        raw = self._pad(raw)
        iv = Random.new().read(AES.block_size)
        cipher = AES.new(key, AES.MODE_CBC, iv)
        return base64.b64encode(iv + cipher.encrypt(raw))
    
    def _decrypt(self, enc, key):
        enc = base64.b64decode(enc)
        iv = enc[:AES.block_size]
        cipher = AES.new(key, AES.MODE_CBC, iv)
        return self._unpad(cipher.decrypt(enc[AES.block_size:]))
    
    def _pad(self, s):
        s = str(s)
        return s + (self.bs() - len(s) % self.bs()) * chr(self.bs() - len(s) % self.bs())
    
    def _unpad(self, s):
        s = str(s)
        return s[:-ord(s[len(s)-1:])]

Yes, to use this function you just call function _encrypt and _decrypt with the parameter like this.

    self._encrypt("Dedy Yuristiawan", self.key(self._default_key)) # parameter string and key
    self._decrypt(encrypted_data, self.key(self._default_key)) #parameter data encrypted and key

and for now don't forget to import library python on the top.

    from Crypto.Cipher import AES
    from Crypto import Random
    import base64
    from gdata.tlslite.utils.rijndael import encrypt

So the conclusion is use this function if you want to encrypt or decrypt data, if you confuse about my code, you can fill on the comment bellow, i hope this is can help you little bit.