title: DES Encryption and decryption of hex using hex key python
body: <p>How can I encrypt and decrypt hex text using 8 byte hex key using DES algorithm in python?</p>
  
  <p>I have a hex text <code>0x3a3456abcd4ff5cd</code> to encrypt with hex keys so how can I convert these values to equivalent strings so that I can use existing libraries to work with them.</p>
  
  <p>Here's what I've tried, but it represents 8 byte key to equivalent 13 byte string:</p>
  
  <pre><code>from Crypto.Cipher import DES
  text =(unichr(4).decode('utf-8')*8).encode('utf-8')
  
  key1=(unichr(0x46)+unichr(0xb2)+unichr(0xc8)+unichr(0xb6)+unichr(0x28)+unichr(0x18)+unichr(0xf8)+unichr(0x84)).encode('utf-8')
  
  key2=(unichr(0x4a)+unichr(0x5a)+unichr(0xa8)+unichr(0xd0)+unichr(0xba)+unichr(0x30)+unichr(0x58)+unichr(0x5a)).encode('utf-8')
  
  des = DES.new(key1,DES.MODE_ECB)
  cipher_text = des.encrypt(plain_text)
  print 'the cipher text is ', cipher_text
  
  des = DES.new(key2,DES.MODE_ECB)
  print 'the decrypted text is: ', des.decrypt(cipher_text)
  </code></pre>