Gestionnaire de fichiers - Editer - /usr/lib/python2.7/site-packages/passlib/crypto/_blowfish/unrolled.py
Arrière
"""passlib.crypto._blowfish.unrolled - unrolled loop implementation of bcrypt, autogenerated by _gen_files.py currently this override the encipher() and expand() methods with optimized versions, and leaves the other base.py methods alone. """ #============================================================================= # imports #============================================================================= # pkg from passlib.crypto._blowfish.base import BlowfishEngine as _BlowfishEngine # local __all__ = [ "BlowfishEngine", ] #============================================================================= # #============================================================================= class BlowfishEngine(_BlowfishEngine): def encipher(self, l, r): """blowfish encipher a single 64-bit block encoded as two 32-bit ints""" (p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15, p16, p17) = self.P S0, S1, S2, S3 = self.S 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 return r ^ p17, l def expand(self, key_words): """unrolled version of blowfish key expansion""" ##assert len(key_words) >= 18, "size of key_words must be >= 18" P, S = self.P, self.S S0, S1, S2, S3 = S #============================================================= # integrate key #============================================================= p0 = P[0] ^ key_words[0] p1 = P[1] ^ key_words[1] p2 = P[2] ^ key_words[2] p3 = P[3] ^ key_words[3] p4 = P[4] ^ key_words[4] p5 = P[5] ^ key_words[5] p6 = P[6] ^ key_words[6] p7 = P[7] ^ key_words[7] p8 = P[8] ^ key_words[8] p9 = P[9] ^ key_words[9] p10 = P[10] ^ key_words[10] p11 = P[11] ^ key_words[11] p12 = P[12] ^ key_words[12] p13 = P[13] ^ key_words[13] p14 = P[14] ^ key_words[14] p15 = P[15] ^ key_words[15] p16 = P[16] ^ key_words[16] p17 = P[17] ^ key_words[17] #============================================================= # update P #============================================================= #------------------------------------------------ # update P[0] and P[1] #------------------------------------------------ l, r = p0, 0 # 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 p0, p1 = l, r = r ^ p17, l #------------------------------------------------ # update P[2] and P[3] #------------------------------------------------ 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 p2, p3 = l, r = r ^ p17, l #------------------------------------------------ # update P[4] and P[5] #------------------------------------------------ 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 p4, p5 = l, r = r ^ p17, l #------------------------------------------------ # update P[6] and P[7] #------------------------------------------------ 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 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) l ^= ((((S0[r >> 24] + S1[(r >> 16) & 0xff]) ^ S2[(r >> 8) & 0xff]) + S3[r & 0xff]) & 0xffffffff) ^ p16 p16, p17 = l, r = r ^ p17, l #------------------------------------------------ # 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 #=============================================================================
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