Source Code for Module dns.tsigkeyring

 1  # Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license 
 2   
 3  # Copyright (C) 2003-2007, 2009-2011 Nominum, Inc. 
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17   
18  """A place to store TSIG keys.""" 
19   
20  from dns._compat import maybe_decode, maybe_encode 
21   
22  import base64 
23   
24  import dns.name 
25   
26   
27 -def from_text(textring): 
28      """Convert a dictionary containing (textual DNS name, base64 secret) pairs 
29      into a binary keyring which has (dns.name.Name, binary secret) pairs. 
30      @rtype: dict""" 
31   
32      keyring = {} 
33      for keytext in textring: 
34          keyname = dns.name.from_text(keytext) 
35          secret = base64.decodestring(maybe_encode(textring[keytext])) 
36          keyring[keyname] = secret 
37      return keyring 
38   
39   
40 -def to_text(keyring): 
41      """Convert a dictionary containing (dns.name.Name, binary secret) pairs 
42      into a text keyring which has (textual DNS name, base64 secret) pairs. 
43      @rtype: dict""" 
44   
45      textring = {} 
46      for keyname in keyring: 
47          keytext = maybe_decode(keyname.to_text()) 
48          secret = maybe_decode(base64.encodestring(keyring[keyname])) 
49          textring[keytext] = secret 
50      return textring 
51