Does anybody know what encrypting technique is JDeveloper/SQL Developer using to persist credentials?

Question

I\'d be more than interesting for me to understand which technique is being used here to persist sensible data since I\'m needing to implement a similar solution. Here\'s a

Answer 1

Here's a python snippet if anyone is intersted. It's a translation of Adam Paynter's example above. It uses pyDes

import os
import pyDes

import binascii

if __name__ == '__main__':
    # Encrypt example
    zero = '\0\0\0\0\0\0\0\0'
    key = os.urandom(8)
    plainText = 'open sesame'
    cipher = pyDes.des(key, mode=pyDes.CBC, IV=zero, padmode=pyDes.PAD_PKCS5)

    cipherText = '\5%s%s' % (key, cipher.encrypt(plainText))
    cipherHex = binascii.hexlify(cipherText)

    # This is what SQLDeveloper stores in XML
    print cipherHex

    # Decrypt above
    cipherText = binascii.unhexlify(cipherHex)
    assert cipherHex[0:2] == '05'
    key = cipherText[1:1+8]
    cipher = pyDes.des(key, mode=pyDes.CBC, IV=zero, padmode=pyDes.PAD_PKCS5)
    print cipher.decrypt(cipherText[1+8:])