• jadeblaquiere

    AES is available out of the box, see example usage below. Though I would be interested to compare to native CommonCrypto as a benchmark...

    import base64
    import hashlib
    from Crypto import Random
    from Crypto.Cipher import AES
    
    class AESCipher(object):
    
        def __init__(self, key): 
            self.bs = 32
            self.key = hashlib.sha256(key.encode()).digest()
    
        def encrypt(self, raw):
            raw = self._pad(raw)
            iv = Random.new().read(AES.block_size)
            cipher = AES.new(self.key, AES.MODE_CBC, iv)
            return base64.b64encode(iv + cipher.encrypt(raw))
    
        def decrypt(self, enc):
            enc = base64.b64decode(enc)
            iv = enc[:AES.block_size]
            cipher = AES.new(self.key, AES.MODE_CBC, iv)
            return self._unpad(cipher.decrypt(enc[AES.block_size:])).decode('utf-8')
    
        def _pad(self, s):
            return s + (self.bs - len(s) % self.bs) * chr(self.bs - len(s) % self.bs)
    
        @staticmethod
        def _unpad(s):
            return s[:-ord(s[len(s)-1:])]
    
    if __name__ == '__main__':  # pragma: no cover
        aes = AESCipher('this is my key')
        plaintext = 'hello, I am very happy to meet you!'
        print 'plain  =', plaintext
        ciphertext = aes.encrypt(plaintext)
        print 'cipher =', ciphertext
        plaintwo = aes.decrypt(ciphertext)
        print 'plain2 =', plaintwo
        
    
    

    posted in Pythonista read more
  • jadeblaquiere

    I'm new to Pythonista (it's awesome!) and was looking for a example using ui.NavigationView. There was a simple example in the UI Tutorial at https://github.com/humberry/ui-tutorial that demonstrated the basics and was quite helpful. What I wanted to do was have a controller class for each view and a separate controller to handle the transitions. I also wanted to be able to try out the individual interfaces as I storyboard the app. So here it is... if you have ideas on how to make this better as an example let me know:

    https://github.com/jadeblaquiere/controller-example

    posted in Pythonista read more

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