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MikroWizard Initial commit | MikroMan Welcome to the world :)
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py/libs/mschap3/md4.py
Executable file
253
py/libs/mschap3/md4.py
Executable file
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# md4.py implements md4 hash class for Python
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# Version 1.0
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# Copyright (C) 2001-2002 Dmitry Rozmanov
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#
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# based on md4.c from "the Python Cryptography Toolkit, version 1.0.0
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# Copyright (C) 1995, A.M. Kuchling"
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# e-mail: dima@xenon.spb.ru
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#
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#====================================================================
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# MD4 validation data
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md4_test= [
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('', 0x31d6cfe0d16ae931b73c59d7e0c089c0),
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("a", 0xbde52cb31de33e46245e05fbdbd6fb24),
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("abc", 0xa448017aaf21d8525fc10ae87aa6729d),
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("message digest", 0xd9130a8164549fe818874806e1c7014b),
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("abcdefghijklmnopqrstuvwxyz", 0xd79e1c308aa5bbcdeea8ed63df412da9),
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("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
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0x043f8582f241db351ce627e153e7f0e4),
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("12345678901234567890123456789012345678901234567890123456789012345678901234567890",
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0xe33b4ddc9c38f2199c3e7b164fcc0536),
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]
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#====================================================================
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from .U32 import U32
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#--------------------------------------------------------------------
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class MD4:
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A = None
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B = None
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C = None
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D = None
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count, len1, len2 = None, None, None
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buf = []
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#-----------------------------------------------------
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def __init__(self):
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self.A = U32(0x67452301)
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self.B = U32(0xefcdab89)
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self.C = U32(0x98badcfe)
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self.D = U32(0x10325476)
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self.count, self.len1, self.len2 = U32(0), U32(0), U32(0)
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self.buf = [0x00] * 64
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#-----------------------------------------------------
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def __repr__(self):
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r = 'A = %s, \nB = %s, \nC = %s, \nD = %s.\n' % (self.A.__repr__(), self.B.__repr__(), self.C.__repr__(), self.D.__repr__())
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r = r + 'count = %s, \nlen1 = %s, \nlen2 = %s.\n' % (self.count.__repr__(), self.len1.__repr__(), self.len2.__repr__())
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for i in range(4):
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for j in range(16):
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r = r + '%4s ' % hex(self.buf[i+j])
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r = r + '\n'
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return r
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#-----------------------------------------------------
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def make_copy(self):
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dest = new()
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dest.len1 = self.len1
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dest.len2 = self.len2
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dest.A = self.A
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dest.B = self.B
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dest.C = self.C
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dest.D = self.D
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dest.count = self.count
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for i in range(int(self.count)):
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dest.buf[i] = self.buf[i]
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return dest
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#-----------------------------------------------------
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def update(self, str):
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buf = []
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for i in str: buf.append(ord(i))
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ilen = U32(len(buf))
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# check if the first length is out of range
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# as the length is measured in bits then multiplay it by 8
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if (int(self.len1 + (ilen << 3)) < int(self.len1)):
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self.len2 = self.len2 + U32(1)
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self.len1 = self.len1 + (ilen << 3)
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self.len2 = self.len2 + (ilen >> 29)
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L = U32(0)
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bufpos = 0
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while (int(ilen) > 0):
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if (64 - int(self.count)) < int(ilen): L = U32(64 - int(self.count))
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else: L = ilen
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for i in range(int(L)): self.buf[i + int(self.count)] = buf[i + bufpos]
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self.count = self.count + L
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ilen = ilen - L
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bufpos = bufpos + int(L)
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if (int(self.count) == 64):
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self.count = U32(0)
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X = []
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i = 0
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for j in range(16):
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X.append(U32(self.buf[i]) + (U32(self.buf[i+1]) << 8) + \
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(U32(self.buf[i+2]) << 16) + (U32(self.buf[i+3]) << 24))
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i = i + 4
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A = self.A
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B = self.B
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C = self.C
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D = self.D
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A = f1(A,B,C,D, 0, 3, X)
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D = f1(D,A,B,C, 1, 7, X)
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C = f1(C,D,A,B, 2,11, X)
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B = f1(B,C,D,A, 3,19, X)
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A = f1(A,B,C,D, 4, 3, X)
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D = f1(D,A,B,C, 5, 7, X)
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C = f1(C,D,A,B, 6,11, X)
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B = f1(B,C,D,A, 7,19, X)
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A = f1(A,B,C,D, 8, 3, X)
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D = f1(D,A,B,C, 9, 7, X)
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C = f1(C,D,A,B,10,11, X)
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B = f1(B,C,D,A,11,19, X)
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A = f1(A,B,C,D,12, 3, X)
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D = f1(D,A,B,C,13, 7, X)
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C = f1(C,D,A,B,14,11, X)
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B = f1(B,C,D,A,15,19, X)
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A = f2(A,B,C,D, 0, 3, X)
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D = f2(D,A,B,C, 4, 5, X)
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C = f2(C,D,A,B, 8, 9, X)
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B = f2(B,C,D,A,12,13, X)
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A = f2(A,B,C,D, 1, 3, X)
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D = f2(D,A,B,C, 5, 5, X)
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C = f2(C,D,A,B, 9, 9, X)
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B = f2(B,C,D,A,13,13, X)
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A = f2(A,B,C,D, 2, 3, X)
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D = f2(D,A,B,C, 6, 5, X)
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C = f2(C,D,A,B,10, 9, X)
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B = f2(B,C,D,A,14,13, X)
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A = f2(A,B,C,D, 3, 3, X)
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D = f2(D,A,B,C, 7, 5, X)
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C = f2(C,D,A,B,11, 9, X)
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B = f2(B,C,D,A,15,13, X)
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A = f3(A,B,C,D, 0, 3, X)
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D = f3(D,A,B,C, 8, 9, X)
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C = f3(C,D,A,B, 4,11, X)
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B = f3(B,C,D,A,12,15, X)
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A = f3(A,B,C,D, 2, 3, X)
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D = f3(D,A,B,C,10, 9, X)
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C = f3(C,D,A,B, 6,11, X)
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B = f3(B,C,D,A,14,15, X)
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A = f3(A,B,C,D, 1, 3, X)
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D = f3(D,A,B,C, 9, 9, X)
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C = f3(C,D,A,B, 5,11, X)
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B = f3(B,C,D,A,13,15, X)
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A = f3(A,B,C,D, 3, 3, X)
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D = f3(D,A,B,C,11, 9, X)
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C = f3(C,D,A,B, 7,11, X)
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B = f3(B,C,D,A,15,15, X)
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self.A = self.A + A
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self.B = self.B + B
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self.C = self.C + C
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self.D = self.D + D
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#-----------------------------------------------------
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def digest(self):
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res = [0x00] * 16
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s = [0x00] * 8
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padding = [0x00] * 64
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padding[0] = 0x80
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padlen, oldlen1, oldlen2 = U32(0), U32(0), U32(0)
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temp = self.make_copy()
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oldlen1 = temp.len1
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oldlen2 = temp.len2
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if (56 <= int(self.count)): padlen = U32(56 - int(self.count) + 64)
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else: padlen = U32(56 - int(self.count))
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temp.update(int_array2str(padding[:int(padlen)]))
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s[0]= (oldlen1) & U32(0xFF)
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s[1]=((oldlen1) >> 8) & U32(0xFF)
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s[2]=((oldlen1) >> 16) & U32(0xFF)
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s[3]=((oldlen1) >> 24) & U32(0xFF)
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s[4]= (oldlen2) & U32(0xFF)
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s[5]=((oldlen2) >> 8) & U32(0xFF)
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s[6]=((oldlen2) >> 16) & U32(0xFF)
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s[7]=((oldlen2) >> 24) & U32(0xFF)
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temp.update(int_array2str(s))
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res[ 0]= temp.A & U32(0xFF)
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res[ 1]=(temp.A >> 8) & U32(0xFF)
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res[ 2]=(temp.A >> 16) & U32(0xFF)
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res[ 3]=(temp.A >> 24) & U32(0xFF)
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res[ 4]= temp.B & U32(0xFF)
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res[ 5]=(temp.B >> 8) & U32(0xFF)
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res[ 6]=(temp.B >> 16) & U32(0xFF)
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res[ 7]=(temp.B >> 24) & U32(0xFF)
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res[ 8]= temp.C & U32(0xFF)
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res[ 9]=(temp.C >> 8) & U32(0xFF)
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res[10]=(temp.C >> 16) & U32(0xFF)
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res[11]=(temp.C >> 24) & U32(0xFF)
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res[12]= temp.D & U32(0xFF)
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res[13]=(temp.D >> 8) & U32(0xFF)
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res[14]=(temp.D >> 16) & U32(0xFF)
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res[15]=(temp.D >> 24) & U32(0xFF)
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return int_array2str(res)
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#====================================================================
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# helpers
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def F(x, y, z): return (((x) & (y)) | ((~x) & (z)))
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def G(x, y, z): return (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
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def H(x, y, z): return ((x) ^ (y) ^ (z))
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def ROL(x, n): return (((x) << n) | ((x) >> (32-n)))
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def f1(a, b, c, d, k, s, X): return ROL(a + F(b, c, d) + X[k], s)
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def f2(a, b, c, d, k, s, X): return ROL(a + G(b, c, d) + X[k] + U32(0x5a827999), s)
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def f3(a, b, c, d, k, s, X): return ROL(a + H(b, c, d) + X[k] + U32(0x6ed9eba1), s)
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#--------------------------------------------------------------------
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# helper function
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def int_array2str(array):
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nstr = ''
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for i in array:
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nstr = nstr + str(chr(i))
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return nstr
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#--------------------------------------------------------------------
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# To be able to use md4.new() instead of md4.MD4()
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new = MD4
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