/usr/lib/python2.7/dist-packages/passlib/crypto/scrypt/_salsa.py is in python-passlib 1.7.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | """passlib.utils.scrypt._salsa - salsa 20/8 core, autogenerated by _gen_salsa.py"""
#=================================================================
# salsa function
#=================================================================
def salsa20(input):
"""apply the salsa20/8 core to the provided input
:args input: input list containing 16 32-bit integers
:returns: result list containing 16 32-bit integers
"""
b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, b13, b14, b15 = input
v0, v1, v2, v3, v4, v5, v6, v7, v8, v9, v10, v11, v12, v13, v14, v15 = \
b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, b13, b14, b15
i = 0
while i < 4:
# salsa op 0: [4] ^= ([0]+[12])<<<7
t = (v0 + v12) & 0xffffffff
v4 ^= ((t & 0x01ffffff) << 7) | (t >> 25)
# salsa op 1: [8] ^= ([4]+[0])<<<9
t = (v4 + v0) & 0xffffffff
v8 ^= ((t & 0x007fffff) << 9) | (t >> 23)
# salsa op 2: [12] ^= ([8]+[4])<<<13
t = (v8 + v4) & 0xffffffff
v12 ^= ((t & 0x0007ffff) << 13) | (t >> 19)
# salsa op 3: [0] ^= ([12]+[8])<<<18
t = (v12 + v8) & 0xffffffff
v0 ^= ((t & 0x00003fff) << 18) | (t >> 14)
# salsa op 4: [9] ^= ([5]+[1])<<<7
t = (v5 + v1) & 0xffffffff
v9 ^= ((t & 0x01ffffff) << 7) | (t >> 25)
# salsa op 5: [13] ^= ([9]+[5])<<<9
t = (v9 + v5) & 0xffffffff
v13 ^= ((t & 0x007fffff) << 9) | (t >> 23)
# salsa op 6: [1] ^= ([13]+[9])<<<13
t = (v13 + v9) & 0xffffffff
v1 ^= ((t & 0x0007ffff) << 13) | (t >> 19)
# salsa op 7: [5] ^= ([1]+[13])<<<18
t = (v1 + v13) & 0xffffffff
v5 ^= ((t & 0x00003fff) << 18) | (t >> 14)
# salsa op 8: [14] ^= ([10]+[6])<<<7
t = (v10 + v6) & 0xffffffff
v14 ^= ((t & 0x01ffffff) << 7) | (t >> 25)
# salsa op 9: [2] ^= ([14]+[10])<<<9
t = (v14 + v10) & 0xffffffff
v2 ^= ((t & 0x007fffff) << 9) | (t >> 23)
# salsa op 10: [6] ^= ([2]+[14])<<<13
t = (v2 + v14) & 0xffffffff
v6 ^= ((t & 0x0007ffff) << 13) | (t >> 19)
# salsa op 11: [10] ^= ([6]+[2])<<<18
t = (v6 + v2) & 0xffffffff
v10 ^= ((t & 0x00003fff) << 18) | (t >> 14)
# salsa op 12: [3] ^= ([15]+[11])<<<7
t = (v15 + v11) & 0xffffffff
v3 ^= ((t & 0x01ffffff) << 7) | (t >> 25)
# salsa op 13: [7] ^= ([3]+[15])<<<9
t = (v3 + v15) & 0xffffffff
v7 ^= ((t & 0x007fffff) << 9) | (t >> 23)
# salsa op 14: [11] ^= ([7]+[3])<<<13
t = (v7 + v3) & 0xffffffff
v11 ^= ((t & 0x0007ffff) << 13) | (t >> 19)
# salsa op 15: [15] ^= ([11]+[7])<<<18
t = (v11 + v7) & 0xffffffff
v15 ^= ((t & 0x00003fff) << 18) | (t >> 14)
# salsa op 16: [1] ^= ([0]+[3])<<<7
t = (v0 + v3) & 0xffffffff
v1 ^= ((t & 0x01ffffff) << 7) | (t >> 25)
# salsa op 17: [2] ^= ([1]+[0])<<<9
t = (v1 + v0) & 0xffffffff
v2 ^= ((t & 0x007fffff) << 9) | (t >> 23)
# salsa op 18: [3] ^= ([2]+[1])<<<13
t = (v2 + v1) & 0xffffffff
v3 ^= ((t & 0x0007ffff) << 13) | (t >> 19)
# salsa op 19: [0] ^= ([3]+[2])<<<18
t = (v3 + v2) & 0xffffffff
v0 ^= ((t & 0x00003fff) << 18) | (t >> 14)
# salsa op 20: [6] ^= ([5]+[4])<<<7
t = (v5 + v4) & 0xffffffff
v6 ^= ((t & 0x01ffffff) << 7) | (t >> 25)
# salsa op 21: [7] ^= ([6]+[5])<<<9
t = (v6 + v5) & 0xffffffff
v7 ^= ((t & 0x007fffff) << 9) | (t >> 23)
# salsa op 22: [4] ^= ([7]+[6])<<<13
t = (v7 + v6) & 0xffffffff
v4 ^= ((t & 0x0007ffff) << 13) | (t >> 19)
# salsa op 23: [5] ^= ([4]+[7])<<<18
t = (v4 + v7) & 0xffffffff
v5 ^= ((t & 0x00003fff) << 18) | (t >> 14)
# salsa op 24: [11] ^= ([10]+[9])<<<7
t = (v10 + v9) & 0xffffffff
v11 ^= ((t & 0x01ffffff) << 7) | (t >> 25)
# salsa op 25: [8] ^= ([11]+[10])<<<9
t = (v11 + v10) & 0xffffffff
v8 ^= ((t & 0x007fffff) << 9) | (t >> 23)
# salsa op 26: [9] ^= ([8]+[11])<<<13
t = (v8 + v11) & 0xffffffff
v9 ^= ((t & 0x0007ffff) << 13) | (t >> 19)
# salsa op 27: [10] ^= ([9]+[8])<<<18
t = (v9 + v8) & 0xffffffff
v10 ^= ((t & 0x00003fff) << 18) | (t >> 14)
# salsa op 28: [12] ^= ([15]+[14])<<<7
t = (v15 + v14) & 0xffffffff
v12 ^= ((t & 0x01ffffff) << 7) | (t >> 25)
# salsa op 29: [13] ^= ([12]+[15])<<<9
t = (v12 + v15) & 0xffffffff
v13 ^= ((t & 0x007fffff) << 9) | (t >> 23)
# salsa op 30: [14] ^= ([13]+[12])<<<13
t = (v13 + v12) & 0xffffffff
v14 ^= ((t & 0x0007ffff) << 13) | (t >> 19)
# salsa op 31: [15] ^= ([14]+[13])<<<18
t = (v14 + v13) & 0xffffffff
v15 ^= ((t & 0x00003fff) << 18) | (t >> 14)
i += 1
b0 = (b0 + v0) & 0xffffffff
b1 = (b1 + v1) & 0xffffffff
b2 = (b2 + v2) & 0xffffffff
b3 = (b3 + v3) & 0xffffffff
b4 = (b4 + v4) & 0xffffffff
b5 = (b5 + v5) & 0xffffffff
b6 = (b6 + v6) & 0xffffffff
b7 = (b7 + v7) & 0xffffffff
b8 = (b8 + v8) & 0xffffffff
b9 = (b9 + v9) & 0xffffffff
b10 = (b10 + v10) & 0xffffffff
b11 = (b11 + v11) & 0xffffffff
b12 = (b12 + v12) & 0xffffffff
b13 = (b13 + v13) & 0xffffffff
b14 = (b14 + v14) & 0xffffffff
b15 = (b15 + v15) & 0xffffffff
return b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12, b13, b14, b15
#=================================================================
# eof
#=================================================================
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