def rekey(options):
"""
Interactive target to change the passphrase for the database.
"""
info("This is an EXTREMELY DANGEROUS activity.")
info("Backup your database first.")
curr_passphrase = raw_input("Current passphrase: ")
crypto_util.configure_crypto_state(curr_passphrase)
new_passphrase = raw_input("New passphrase: ")
confirm = raw_input("MD5 of passphrase is %s (type \"YES\" to confirm): " % hashlib.md5(new_passphrase).hexdigest())
if confirm != 'YES':
raise ValueError("You must enter 'YES' to proceed.")
if crypto_util.has_encrypted_data():
confirm = raw_input("There is existing encrypted data in the database. Type 'REKEY' to proceed with re-encryption: ")
if confirm != 'REKEY':
raise ValueError("You must enter 'REKEY' to proceed.")
# Use the same salt as previous key
new_key = crypto_util.derive_configured_key(new_passphrase)
crypto_util.replace_key(new_key=new_key, force=True)
info("Re-encryption completed successfully.")
if config.get('debug'):
print "The new key is: %s%s" % (binascii.hexlify(new_key.encryption_key), binascii.hexlify(new_key.signing_key))
def test_replace_key(self):
""" Test replacing the key (and re-encrypting the database). """
self.assertTrue(util.has_encrypted_data())
# Create a new key
ekey = hashlib.sha256('new-encrypt').digest()
skey = hashlib.sha256('new-sign').digest()
new_key = MasterKey(encryption_key=ekey, signing_key=skey)
with self.assertRaises(exc.DatabaseAlreadyEncrypted):
util.replace_key(new_key)
# Check existing passwords for an arbitrary user
for (i,pw) in enumerate(self.data.resources['host1.example.com'].passwords.order_by('username')):
self.assertEquals('password{0}'.format(i), pw.password_decrypted)
util.replace_key(new_key, force=True)
# The replace_key functions updates the global state, so this should work:
for (i,pw) in enumerate(self.data.resources['host1.example.com'].passwords.order_by('username')):
self.assertEquals('password{0}'.format(i), pw.password_decrypted)
# But using the old key should, of course, now fail:
for (i,pw) in enumerate(self.data.resources['host1.example.com'].passwords.order_by('username')):
with self.assertRaises(exc.CryptoAuthenticationFailed):
engine.decrypt(pw.password, key=self.SECRET_KEY)
