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772 lines
36 KiB
772 lines
36 KiB
"""passlib.crypto._blowfish.unrolled - unrolled loop implementation of bcrypt,
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autogenerated by _gen_files.py
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currently this override the encipher() and expand() methods
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with optimized versions, and leaves the other base.py methods alone.
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"""
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#=============================================================================
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# imports
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#=============================================================================
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# pkg
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from passlib.crypto._blowfish.base import BlowfishEngine as _BlowfishEngine
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# local
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__all__ = [
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"BlowfishEngine",
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]
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#=============================================================================
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#
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#=============================================================================
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class BlowfishEngine(_BlowfishEngine):
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def encipher(self, l, r):
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"""blowfish encipher a single 64-bit block encoded as two 32-bit ints"""
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(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9,
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p10, p11, p12, p13, p14, p15, p16, p17) = self.P
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S0, S1, S2, S3 = self.S
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l ^= p0
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# Feistel substitution on left word (round 0)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p1
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# Feistel substitution on right word (round 1)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p2
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# Feistel substitution on left word (round 2)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p3
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# Feistel substitution on right word (round 3)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p4
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# Feistel substitution on left word (round 4)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p5
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# Feistel substitution on right word (round 5)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p6
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# Feistel substitution on left word (round 6)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p7
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# Feistel substitution on right word (round 7)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p8
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# Feistel substitution on left word (round 8)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p9
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# Feistel substitution on right word (round 9)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p10
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# Feistel substitution on left word (round 10)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p11
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# Feistel substitution on right word (round 11)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p12
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# Feistel substitution on left word (round 12)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p13
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# Feistel substitution on right word (round 13)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p14
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# Feistel substitution on left word (round 14)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p15
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# Feistel substitution on right word (round 15)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p16
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return r ^ p17, l
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def expand(self, key_words):
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"""unrolled version of blowfish key expansion"""
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##assert len(key_words) >= 18, "size of key_words must be >= 18"
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P, S = self.P, self.S
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S0, S1, S2, S3 = S
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#=============================================================
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# integrate key
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#=============================================================
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p0 = P[0] ^ key_words[0]
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p1 = P[1] ^ key_words[1]
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p2 = P[2] ^ key_words[2]
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p3 = P[3] ^ key_words[3]
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p4 = P[4] ^ key_words[4]
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p5 = P[5] ^ key_words[5]
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p6 = P[6] ^ key_words[6]
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p7 = P[7] ^ key_words[7]
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p8 = P[8] ^ key_words[8]
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p9 = P[9] ^ key_words[9]
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p10 = P[10] ^ key_words[10]
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p11 = P[11] ^ key_words[11]
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p12 = P[12] ^ key_words[12]
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p13 = P[13] ^ key_words[13]
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p14 = P[14] ^ key_words[14]
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p15 = P[15] ^ key_words[15]
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p16 = P[16] ^ key_words[16]
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p17 = P[17] ^ key_words[17]
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#=============================================================
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# update P
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#=============================================================
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#------------------------------------------------
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# update P[0] and P[1]
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#------------------------------------------------
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l, r = p0, 0
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# Feistel substitution on left word (round 0)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p1
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# Feistel substitution on right word (round 1)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p2
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# Feistel substitution on left word (round 2)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p3
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# Feistel substitution on right word (round 3)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p4
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# Feistel substitution on left word (round 4)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p5
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# Feistel substitution on right word (round 5)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p6
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# Feistel substitution on left word (round 6)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p7
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# Feistel substitution on right word (round 7)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p8
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# Feistel substitution on left word (round 8)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p9
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# Feistel substitution on right word (round 9)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p10
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# Feistel substitution on left word (round 10)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p11
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# Feistel substitution on right word (round 11)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p12
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# Feistel substitution on left word (round 12)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p13
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# Feistel substitution on right word (round 13)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p14
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# Feistel substitution on left word (round 14)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p15
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# Feistel substitution on right word (round 15)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p16
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p0, p1 = l, r = r ^ p17, l
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#------------------------------------------------
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# update P[2] and P[3]
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#------------------------------------------------
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l ^= p0
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# Feistel substitution on left word (round 0)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p1
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# Feistel substitution on right word (round 1)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p2
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# Feistel substitution on left word (round 2)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p3
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# Feistel substitution on right word (round 3)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p4
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# Feistel substitution on left word (round 4)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p5
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# Feistel substitution on right word (round 5)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p6
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# Feistel substitution on left word (round 6)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p7
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# Feistel substitution on right word (round 7)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p8
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# Feistel substitution on left word (round 8)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p9
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# Feistel substitution on right word (round 9)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p10
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# Feistel substitution on left word (round 10)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p11
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# Feistel substitution on right word (round 11)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p12
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# Feistel substitution on left word (round 12)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p13
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# Feistel substitution on right word (round 13)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p14
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# Feistel substitution on left word (round 14)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p15
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# Feistel substitution on right word (round 15)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p16
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p2, p3 = l, r = r ^ p17, l
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#------------------------------------------------
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# update P[4] and P[5]
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#------------------------------------------------
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l ^= p0
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# Feistel substitution on left word (round 0)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p1
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# Feistel substitution on right word (round 1)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p2
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# Feistel substitution on left word (round 2)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p3
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# Feistel substitution on right word (round 3)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p4
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# Feistel substitution on left word (round 4)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p5
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# Feistel substitution on right word (round 5)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p6
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# Feistel substitution on left word (round 6)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p7
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# Feistel substitution on right word (round 7)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p8
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# Feistel substitution on left word (round 8)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p9
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# Feistel substitution on right word (round 9)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p10
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# Feistel substitution on left word (round 10)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p11
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# Feistel substitution on right word (round 11)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p12
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# Feistel substitution on left word (round 12)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p13
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# Feistel substitution on right word (round 13)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p14
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# Feistel substitution on left word (round 14)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p15
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# Feistel substitution on right word (round 15)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p16
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p4, p5 = l, r = r ^ p17, l
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#------------------------------------------------
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# update P[6] and P[7]
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#------------------------------------------------
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l ^= p0
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# Feistel substitution on left word (round 0)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p1
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# Feistel substitution on right word (round 1)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p2
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# Feistel substitution on left word (round 2)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p3
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# Feistel substitution on right word (round 3)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p4
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# Feistel substitution on left word (round 4)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p5
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# Feistel substitution on right word (round 5)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p6
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# Feistel substitution on left word (round 6)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p7
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# Feistel substitution on right word (round 7)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p8
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# Feistel substitution on left word (round 8)
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r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
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S3[l & 0xff]) & 0xffffffff) ^ p9
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# Feistel substitution on right word (round 9)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
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S3[r & 0xff]) & 0xffffffff) ^ p10
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# Feistel substitution on left word (round 10)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p11
|
|
|
|
# Feistel substitution on right word (round 11)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p12
|
|
# Feistel substitution on left word (round 12)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p13
|
|
|
|
# Feistel substitution on right word (round 13)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p14
|
|
# Feistel substitution on left word (round 14)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p15
|
|
|
|
# Feistel substitution on right word (round 15)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p16
|
|
p6, p7 = l, r = r ^ p17, l
|
|
|
|
#------------------------------------------------
|
|
# update P[8] and P[9]
|
|
#------------------------------------------------
|
|
l ^= p0
|
|
|
|
# Feistel substitution on left word (round 0)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p1
|
|
|
|
# Feistel substitution on right word (round 1)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p2
|
|
# Feistel substitution on left word (round 2)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p3
|
|
|
|
# Feistel substitution on right word (round 3)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p4
|
|
# Feistel substitution on left word (round 4)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p5
|
|
|
|
# Feistel substitution on right word (round 5)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p6
|
|
# Feistel substitution on left word (round 6)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p7
|
|
|
|
# Feistel substitution on right word (round 7)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p8
|
|
# Feistel substitution on left word (round 8)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p9
|
|
|
|
# Feistel substitution on right word (round 9)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p10
|
|
# Feistel substitution on left word (round 10)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p11
|
|
|
|
# Feistel substitution on right word (round 11)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p12
|
|
# Feistel substitution on left word (round 12)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p13
|
|
|
|
# Feistel substitution on right word (round 13)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p14
|
|
# Feistel substitution on left word (round 14)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p15
|
|
|
|
# Feistel substitution on right word (round 15)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p16
|
|
p8, p9 = l, r = r ^ p17, l
|
|
|
|
#------------------------------------------------
|
|
# update P[10] and P[11]
|
|
#------------------------------------------------
|
|
l ^= p0
|
|
|
|
# Feistel substitution on left word (round 0)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p1
|
|
|
|
# Feistel substitution on right word (round 1)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p2
|
|
# Feistel substitution on left word (round 2)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p3
|
|
|
|
# Feistel substitution on right word (round 3)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p4
|
|
# Feistel substitution on left word (round 4)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p5
|
|
|
|
# Feistel substitution on right word (round 5)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p6
|
|
# Feistel substitution on left word (round 6)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p7
|
|
|
|
# Feistel substitution on right word (round 7)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p8
|
|
# Feistel substitution on left word (round 8)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p9
|
|
|
|
# Feistel substitution on right word (round 9)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p10
|
|
# Feistel substitution on left word (round 10)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p11
|
|
|
|
# Feistel substitution on right word (round 11)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p12
|
|
# Feistel substitution on left word (round 12)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p13
|
|
|
|
# Feistel substitution on right word (round 13)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p14
|
|
# Feistel substitution on left word (round 14)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p15
|
|
|
|
# Feistel substitution on right word (round 15)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p16
|
|
p10, p11 = l, r = r ^ p17, l
|
|
|
|
#------------------------------------------------
|
|
# update P[12] and P[13]
|
|
#------------------------------------------------
|
|
l ^= p0
|
|
|
|
# Feistel substitution on left word (round 0)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p1
|
|
|
|
# Feistel substitution on right word (round 1)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p2
|
|
# Feistel substitution on left word (round 2)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p3
|
|
|
|
# Feistel substitution on right word (round 3)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p4
|
|
# Feistel substitution on left word (round 4)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p5
|
|
|
|
# Feistel substitution on right word (round 5)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p6
|
|
# Feistel substitution on left word (round 6)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p7
|
|
|
|
# Feistel substitution on right word (round 7)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p8
|
|
# Feistel substitution on left word (round 8)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p9
|
|
|
|
# Feistel substitution on right word (round 9)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p10
|
|
# Feistel substitution on left word (round 10)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p11
|
|
|
|
# Feistel substitution on right word (round 11)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p12
|
|
# Feistel substitution on left word (round 12)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p13
|
|
|
|
# Feistel substitution on right word (round 13)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p14
|
|
# Feistel substitution on left word (round 14)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p15
|
|
|
|
# Feistel substitution on right word (round 15)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p16
|
|
p12, p13 = l, r = r ^ p17, l
|
|
|
|
#------------------------------------------------
|
|
# update P[14] and P[15]
|
|
#------------------------------------------------
|
|
l ^= p0
|
|
|
|
# Feistel substitution on left word (round 0)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p1
|
|
|
|
# Feistel substitution on right word (round 1)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p2
|
|
# Feistel substitution on left word (round 2)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p3
|
|
|
|
# Feistel substitution on right word (round 3)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p4
|
|
# Feistel substitution on left word (round 4)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p5
|
|
|
|
# Feistel substitution on right word (round 5)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p6
|
|
# Feistel substitution on left word (round 6)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p7
|
|
|
|
# Feistel substitution on right word (round 7)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p8
|
|
# Feistel substitution on left word (round 8)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p9
|
|
|
|
# Feistel substitution on right word (round 9)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p10
|
|
# Feistel substitution on left word (round 10)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p11
|
|
|
|
# Feistel substitution on right word (round 11)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p12
|
|
# Feistel substitution on left word (round 12)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p13
|
|
|
|
# Feistel substitution on right word (round 13)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p14
|
|
# Feistel substitution on left word (round 14)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p15
|
|
|
|
# Feistel substitution on right word (round 15)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p16
|
|
p14, p15 = l, r = r ^ p17, l
|
|
|
|
#------------------------------------------------
|
|
# update P[16] and P[17]
|
|
#------------------------------------------------
|
|
l ^= p0
|
|
|
|
# Feistel substitution on left word (round 0)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p1
|
|
|
|
# Feistel substitution on right word (round 1)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p2
|
|
# Feistel substitution on left word (round 2)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p3
|
|
|
|
# Feistel substitution on right word (round 3)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p4
|
|
# Feistel substitution on left word (round 4)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p5
|
|
|
|
# Feistel substitution on right word (round 5)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p6
|
|
# Feistel substitution on left word (round 6)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p7
|
|
|
|
# Feistel substitution on right word (round 7)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p8
|
|
# Feistel substitution on left word (round 8)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p9
|
|
|
|
# Feistel substitution on right word (round 9)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p10
|
|
# Feistel substitution on left word (round 10)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p11
|
|
|
|
# Feistel substitution on right word (round 11)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p12
|
|
# Feistel substitution on left word (round 12)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p13
|
|
|
|
# Feistel substitution on right word (round 13)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p14
|
|
# Feistel substitution on left word (round 14)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p15
|
|
|
|
# Feistel substitution on right word (round 15)
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l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p16
|
|
p16, p17 = l, r = r ^ p17, l
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|
|
|
|
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#------------------------------------------------
|
|
# save changes to original P array
|
|
#------------------------------------------------
|
|
P[:] = (p0, p1, p2, p3, p4, p5, p6, p7, p8, p9,
|
|
p10, p11, p12, p13, p14, p15, p16, p17)
|
|
|
|
#=============================================================
|
|
# update S
|
|
#=============================================================
|
|
|
|
for box in S:
|
|
j = 0
|
|
while j < 256:
|
|
l ^= p0
|
|
|
|
# Feistel substitution on left word (round 0)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p1
|
|
|
|
# Feistel substitution on right word (round 1)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p2
|
|
# Feistel substitution on left word (round 2)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p3
|
|
|
|
# Feistel substitution on right word (round 3)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p4
|
|
# Feistel substitution on left word (round 4)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p5
|
|
|
|
# Feistel substitution on right word (round 5)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p6
|
|
# Feistel substitution on left word (round 6)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p7
|
|
|
|
# Feistel substitution on right word (round 7)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p8
|
|
# Feistel substitution on left word (round 8)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p9
|
|
|
|
# Feistel substitution on right word (round 9)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p10
|
|
# Feistel substitution on left word (round 10)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p11
|
|
|
|
# Feistel substitution on right word (round 11)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p12
|
|
# Feistel substitution on left word (round 12)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p13
|
|
|
|
# Feistel substitution on right word (round 13)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p14
|
|
# Feistel substitution on left word (round 14)
|
|
r ^= ((((S0[l >> 24] + S1[(l >> 16) & 0xff]) ^ S2[(l >> 8) & 0xff]) +
|
|
S3[l & 0xff]) & 0xffffffff) ^ p15
|
|
|
|
# Feistel substitution on right word (round 15)
|
|
l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) +
|
|
S3[r & 0xff]) & 0xffffffff) ^ p16
|
|
|
|
box[j], box[j+1] = l, r = r ^ p17, l
|
|
j += 2
|
|
#===================================================================
|
|
# eoc
|
|
#===================================================================
|
|
|
|
#=============================================================================
|
|
# eof
|
|
#=============================================================================
|