CVS.py

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from Peach.transformer import Transformer


class CvsScramble(Transformer):
    """CVS pserver password scramble."""

    _shifts = [
        0, 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,
        114, 120, 53, 79, 96, 109, 72, 108, 70, 64, 76, 67, 116, 74, 68, 87,
        111, 52, 75, 119, 49, 34, 82, 81, 95, 65, 112, 86, 118, 110, 122, 105,
        41, 57, 83, 43, 46, 102, 40, 89, 38, 103, 45, 50, 42, 123, 91, 35,
        125, 55, 54, 66, 124, 126, 59, 47, 92, 71, 115, 78, 88, 107, 106, 56,
        36, 121, 117, 104, 101, 100, 69, 73, 99, 63, 94, 93, 39, 37, 61, 48,
        58, 113, 32, 90, 44, 98, 60, 51, 33, 97, 62, 77, 84, 80, 85, 223,
        225, 216, 187, 166, 229, 189, 222, 188, 141, 249, 148, 200, 184, 136, 248, 190,
        199, 170, 181, 204, 138, 232, 218, 183, 255, 234, 220, 247, 213, 203, 226, 193,
        174, 172, 228, 252, 217, 201, 131, 230, 197, 211, 145, 238, 161, 179, 160, 212,
        207, 221, 254, 173, 202, 146, 224, 151, 140, 196, 205, 130, 135, 133, 143, 246,
        192, 159, 244, 239, 185, 168, 215, 144, 139, 165, 180, 157, 147, 186, 214, 176,
        227, 231, 219, 169, 175, 156, 206, 198, 129, 164, 150, 210, 154, 177, 134, 127,
        182, 128, 158, 208, 162, 132, 167, 209, 149, 241, 153, 251, 237, 236, 171, 195,
        243, 233, 253, 240, 194, 250, 191, 155, 142, 137, 245, 235, 163, 242, 178, 152
    ]

    def realEncode(self, data):
        s = []
        for i in range(len(data)):
            s.append(data[i])
        s.append(None)
        for i in range(len(data)):
            s[i + 1] = "%c" % self._shifts[ord(data[i])]
        out = ""
        for i in range(len(s)):
            out += s[i]
        return out