From 5d86cfd98437eaa2b84b07ba19d51d50d64bc53f Mon Sep 17 00:00:00 2001
From: Walter Purcaro <vuolter@users.noreply.github.com>
Date: Tue, 12 May 2015 14:07:48 +0200
Subject: Missing optional lib
---
lib/Python/Lib/Crypto/Hash/MD4.py | 91 +++++++++++++++++++++++++++++++++++++++
1 file changed, 91 insertions(+)
create mode 100644 lib/Python/Lib/Crypto/Hash/MD4.py
(limited to 'lib/Python/Lib/Crypto/Hash/MD4.py')
diff --git a/lib/Python/Lib/Crypto/Hash/MD4.py b/lib/Python/Lib/Crypto/Hash/MD4.py
new file mode 100644
index 000000000..e28a2011d
--- /dev/null
+++ b/lib/Python/Lib/Crypto/Hash/MD4.py
@@ -0,0 +1,91 @@
+# -*- coding: utf-8 -*-
+#
+# ===================================================================
+# The contents of this file are dedicated to the public domain. To
+# the extent that dedication to the public domain is not available,
+# everyone is granted a worldwide, perpetual, royalty-free,
+# non-exclusive license to exercise all rights associated with the
+# contents of this file for any purpose whatsoever.
+# No rights are reserved.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# ===================================================================
+
+"""MD4 cryptographic hash algorithm.
+
+MD4 is specified in RFC1320_ and produces the 128 bit digest of a message.
+
+ >>> from Crypto.Hash import MD4
+ >>>
+ >>> h = MD4.new()
+ >>> h.update(b'Hello')
+ >>> print h.hexdigest()
+
+MD4 stand for Message Digest version 4, and it was invented by Rivest in 1990.
+
+This algorithm is insecure. Do not use it for new designs.
+
+.. _RFC1320: http://tools.ietf.org/html/rfc1320
+"""
+
+_revision__ = "$Id$"
+
+__all__ = ['new', 'digest_size', 'MD4Hash' ]
+
+from Crypto.Util.py3compat import *
+from Crypto.Hash.hashalgo import HashAlgo
+
+import Crypto.Hash._MD4 as _MD4
+hashFactory = _MD4
+
+class MD4Hash(HashAlgo):
+ """Class that implements an MD4 hash
+
+ :undocumented: block_size
+ """
+
+ #: ASN.1 Object identifier (OID)::
+ #:
+ #: id-md2 OBJECT IDENTIFIER ::= {
+ #: iso(1) member-body(2) us(840) rsadsi(113549)
+ #: digestAlgorithm(2) 4
+ #: }
+ #:
+ #: This value uniquely identifies the MD4 algorithm.
+ oid = b('\x06\x08\x2a\x86\x48\x86\xf7\x0d\x02\x04')
+
+ digest_size = 16
+ block_size = 64
+
+ def __init__(self, data=None):
+ HashAlgo.__init__(self, hashFactory, data)
+
+ def new(self, data=None):
+ return MD4Hash(data)
+
+def new(data=None):
+ """Return a fresh instance of the hash object.
+
+ :Parameters:
+ data : byte string
+ The very first chunk of the message to hash.
+ It is equivalent to an early call to `MD4Hash.update()`.
+ Optional.
+
+ :Return: A `MD4Hash` object
+ """
+ return MD4Hash().new(data)
+
+#: The size of the resulting hash in bytes.
+digest_size = MD4Hash.digest_size
+
+#: The internal block size of the hash algorithm in bytes.
+block_size = MD4Hash.block_size
+
--
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