diff options
Diffstat (limited to '')
| -rwxr-xr-x | sha3sum.py | 144 |
1 files changed, 130 insertions, 14 deletions
@@ -24,6 +24,8 @@ import sys class SHA3: ''' + SHA-3/Keccak hash algorithm implementation + @author Mattias Andrée (maandree@member.fsf.org) ''' @@ -307,9 +309,11 @@ class SHA3: rc = [0] * ((SHA3.n + 7) >> 3) ptr = 0 - # Absorbing phase rr = SHA3.r >> 3 + nn = SHA3.n >> 3 ww = SHA3.w >> 3 + + # Absorbing phase msg_i =[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, @@ -322,15 +326,13 @@ class SHA3: SHA3.keccakF(SHA3.S) # Squeezing phase - rr = SHA3.r >> 3 - nn = SHA3.n >> 3 olen = SHA3.n j = 0 while (olen > 0): i = 0 while (i < 25) and (i < rr) and (j < nn): v = SHA3.S[i % 5][i // 5] - for _ in range(8): + for _ in range(ww): if (j < nn): rc[ptr] = v & 255 ptr += 1 @@ -344,16 +346,111 @@ class SHA3: return rc -output = 512 -total = 1600 -bitrate = total - output * 2 -MESSAGE = 'The quick brown fox jumps over the lazy dog.'.encode('UTF-8') - -SHA3.initalise(bitrate, total - bitrate, output) -SHA3.update(MESSAGE[:20]) -sys.stdout.buffer.write(bytes(SHA3.digest(MESSAGE[20:]))) -sys.stdout.buffer.flush() - +if __name__ == '__main__': + cmd = sys.argv[0] + args = sys.argv[1:] + if '/' in cmd: + cmd = cmd[cmd.rfind('/') + 1:] + if cmd.endswith('.py'): + cmd = cmd[:-3] + + o = 512 # --outputsize + if cmd == 'sha3-224sum': o = 224 + elif cmd == 'sha3-256sum': o = 256 + elif cmd == 'sha3-384sum': o = 384 + elif cmd == 'sha3-512sum': o = 512 + s = 1600 # --statesize + r = s - (o << 1) # --bitrate + c = s - r # --capacity + w = s // 25 # --wordsize + i = 1 # --iterations + binary = False + + files = [] + dashed = False + linger = None + + for arg in args: + if linger is not None: + if linger[1] is None: + linger[1] = arg + arg = None + if linger[0] in ('-r', '--bitrate'): + r = linger[1] + o = (s - r) >> 1 + elif linger[0] in ('-c', '--capacity'): + c = linger[1] + r = s - c + elif linger[0] in ('-w', '--wordsize'): + w = linger[1] + s = w * 25 + elif linger[0] in ('-o', '--outputsize'): + o = linger[1] + r = s - (o << 1) + elif linger[0] in ('-s', '--statesize'): + s = linger[1] + r = s - (o << 1) + elif linger[0] in ('-i', '--iterations'): + iterations = linger[1] + else: + sys.stderr.write(sys.argv[0] + ': unrecognised option: ' + linger) + exit(1) + linger = None + if arg is None: + continue + if dashed: + files.append(None if arg == '-' else arg) + elif arg == '--': + dashed = True + elif arg.startswith('--'): + if '=' in arg: + linger = (arg[:arg.find('=')], arg[arg.find('=') + 1:]) + else: + if arg == '--binary': + binary = True + else: + linger = (arg, None) + elif arg.startswith('-'): + if arg[1] == 'b': + binary = True + arg = arg[1:] + if len(arg) > 1: + linger = ('-' + arg, None) + else: + linger = ('-' + arg[0], arg[1:]) + else: + files.append(None if arg == '-' else arg) + + if len(files) == 0: + files.append(None) + + + stdin = None + for filename in files: + if (filename is None) and (stdin is not None): + print(stdin) + continue + rc = '' + with open('/dev/stdin' if filename is None else filename, 'rb') as file: + message = file.read() + SHA3.initalise(r, c, o) + ##SHA3.update(msg) + bs = bytes(SHA3.digest(message)) + if binary: + if filename is None: + stdin = bs + sys.stdout.buffer.write(bs) + sys.stdout.buffer.flush() + else: + for b in bs: + rc += "0123456789ABCDEF"[b >> 4] + rc += "0123456789ABCDEF"[b & 15] + rc += ' ' + ('-' if filename is None else filename) + '\n' + if filename is None: + stdin = rc + sys.stdout.buffer.write(rc.encode('UTF-8')) + sys.stdout.buffer.flush() + # 0e ab 42 de 4c 3c eb 92 35 fc 91 ac ff e7 46 b2 # 9c 29 a8 c3 66 b7 c6 0e 4e 67 c4 66 f3 6a 43 04 # c0 0f a9 ca f9 d8 79 76 ba 46 9b cb e0 67 13 b4 @@ -371,6 +468,7 @@ SHA-3/Keccak checksum calculator USAGE: sha3sum [option...] < FILE sha3sum [option...] file... + OPTIONS: -r BITRATE --bitrate The bitrate to use for SHA-3. (default: 576) @@ -393,5 +491,23 @@ OPTIONS: -b --binary Print the checksum in binary, rather than hexadecimal. + +COPYRIGHT: + +Copyright © 2013 Mattias Andrée (maandree@member.fsf.org) + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 3 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. + ''' |