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diff --git a/third_party/dnspython/dns/tsigkeyring.py b/third_party/dnspython/dns/tsigkeyring.py
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--- a/third_party/dnspython/dns/tsigkeyring.py
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-# Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
-#
-# Permission to use, copy, modify, and distribute this software and its
-# documentation for any purpose with or without fee is hereby granted,
-# provided that the above copyright notice and this permission notice
-# appear in all copies.
-#
-# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
-# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-"""A place to store TSIG keys."""
-
-import base64
-
-import dns.name
-
-def from_text(textring):
- """Convert a dictionary containing (textual DNS name, base64 secret) pairs
- into a binary keyring which has (dns.name.Name, binary secret) pairs.
- @rtype: dict"""
-
- keyring = {}
- for keytext in textring:
- keyname = dns.name.from_text(keytext)
- secret = base64.decodestring(textring[keytext])
- keyring[keyname] = secret
- return keyring
-
-def to_text(keyring):
- """Convert a dictionary containing (dns.name.Name, binary secret) pairs
- into a text keyring which has (textual DNS name, base64 secret) pairs.
- @rtype: dict"""
-
- textring = {}
- for keyname in keyring:
- keytext = dns.name.to_text(keyname)
- secret = base64.encodestring(keyring[keyname])
- textring[keytext] = secret
- return textring