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-rwxr-xr-x[-rw-r--r--]sha3sum.py265
1 files changed, 198 insertions, 67 deletions
diff --git a/sha3sum.py b/sha3sum.py
index e4be16a..2dcf180 100644..100755
--- a/sha3sum.py
+++ b/sha3sum.py
@@ -1,7 +1,31 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+'''
+sha3sum – SHA-3 (Keccak) checksum calculator
+
+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/>.
+'''
+
import sys
class SHA3:
+ '''
+ @author Mattias Andrée (maandree@member.fsf.org)
+ '''
RC=[0x0000000000000001, 0x0000000000008082, 0x800000000000808A, 0x8000000080008000,
0x000000000000808B, 0x0000000080000001, 0x8000000080008081, 0x8000000000008009,
@@ -24,25 +48,40 @@ class SHA3:
- B = [[0,0,0,0,0],[0,0,0,0,0],[0,0,0,0,0],[0,0,0,0,0],[0,0,0,0,0]]
+ B = [[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]]
'''
:list<list<int>> Keccak-f round temporary
'''
- C = [0,0,0,0,0]
+ C = [0, 0, 0, 0, 0]
'''
:list<int> Keccak-f round temporary
'''
- D = [0,0,0,0,0]
+ D = [0, 0, 0, 0, 0]
'''
:list<int> Keccak-f round temporary
'''
+
+ r = 0
+ '''
+ :int The bitrate
+ '''
+ c = 0
+ '''
+ :int The capacity
+ '''
+
+ n = 0
+ '''
+ :int The output size
+ '''
+
b = 0
'''
- :int The bitrate
+ :int The state size
'''
w = 0
@@ -65,6 +104,16 @@ class SHA3:
:int 12 + 2ℓ, the number of rounds
'''
+ S = None
+ '''
+ :list<list<int>> The current state
+ '''
+
+ M = None
+ '''
+ :bytes Left over water to fill the sponge with at next update
+ '''
+
@staticmethod
@@ -76,7 +125,7 @@ class SHA3:
@param n:int Rotation steps
@return :int The value rotated
'''
- return ((x >> (Keccak.w - (n % Keccak.w))) + (x << (n % Keccak.w))) & Keccak.wmod
+ return ((x >> (SHA3.w - (n % SHA3.w))) + (x << (n % SHA3.w))) & SHA3.wmod
@staticmethod
@@ -104,22 +153,22 @@ class SHA3:
'''
# θ step
for x in range(5):
- Keccak.C[x] = A[x][0] ^ A[x][1] ^ A[x][2] ^ A[x][3] ^ A[x][4]
+ SHA3.C[x] = A[x][0] ^ A[x][1] ^ A[x][2] ^ A[x][3] ^ A[x][4]
for x in range(5):
- Keccak.D[x] = Keccak.C[(x - 1) % 5] ^ Keccak.rotate(Keccak.C[(x + 1) % 5], 1)
+ SHA3.D[x] = SHA3.C[(x - 1) % 5] ^ SHA3.rotate(SHA3.C[(x + 1) % 5], 1)
for x in range(5):
for y in range(5):
- A[x][y] ^= Keccak.D[x]
+ A[x][y] ^= SHA3.D[x]
# ρ and π steps
for x in range(5):
for y in range(5):
- Keccak.B[y][(2 * x + 3 * y) % 5] = Keccak.rotate(A[x][y], Keccak.R[x * 5 + y])
+ SHA3.B[y][(2 * x + 3 * y) % 5] = SHA3.rotate(A[x][y], SHA3.R[x * 5 + y])
# ξ step
for x in range(5):
for y in range(5):
- A[x][y] = Keccak.B[x][y] ^ ((~(Keccak.B[(x + 1) % 5][y])) & Keccak.B[(x + 2) % 5][y])
+ A[x][y] = SHA3.B[x][y] ^ ((~(SHA3.B[(x + 1) % 5][y])) & SHA3.B[(x + 2) % 5][y])
# ι step
A[0][0] ^= rc
@@ -132,8 +181,8 @@ class SHA3:
@param A:list<list<int>> The current state
'''
- for i in range(Keccak.nr):
- Keccak.keccakFRound(A, Keccak.RC[i] & Keccak.wmod)
+ for i in range(SHA3.nr):
+ SHA3.keccakFRound(A, SHA3.RC[i] & SHA3.wmod)
@staticmethod
@@ -151,112 +200,158 @@ class SHA3:
i = off + ww - 1
while i >= off:
rc <<= 8
- rc |= ord(message[i]) if (i < rr) else 0
+ rc |= message[i] if (i < rr) else 0
i -= 1
return rc
@staticmethod
- def pad10star1(M, r):
+ def pad10star1(msg, r):
'''
pad 10*1
- @param M:str The message to pad
- @param r:int The bitrate
- @return :str The message padded
+ @param msg:bytes The message to pad
+ @param n:int The The message to pad
+ @param r:int The bitrate
+ @return :str The message padded
'''
- [nnn, msg] = M
+ nnn = len(msg)
nrf = nnn >> 3
nbrf = nnn & 7
ll = nnn % r
- bbbb = 1 if nbrf == 0 else ((ord(msg[nrf]) >> (8 - nbrf)) | (1 << nbrf))
+ bbbb = 1 if nbrf == 0 else ((msg[nrf] >> (8 - nbrf)) | (1 << nbrf))
message = None
if ((r - 8 <= ll) and (ll <= r - 2)):
nnn = nrf + 1
- message = [''] * 1
- message[0] = chr(bbbb ^ 128)
+ message = [bbbb ^ 128]
else:
nnn = (nrf + 1) << 3
nnn = ((nnn - (nnn % r) + (r - 8)) >> 3) + 1
- message = [''] * (nnn - nrf)
- message[0] = chr(bbbb)
+ message = [0] * (nnn - nrf)
+ message[0] = bbbb
i = nrf + 1
while i < nnn:
- message[i - nrf] += '\0'
+ message[i - nrf] = 0
i += 1
- message[nnn - nrf - 1] = chr(0x80)
+ message[nnn - nrf - 1] = 0x80
- return msg[:nrf] + ''.join(message)
+ return msg[:nrf] + bytes(message)
@staticmethod
- def keccak(M, r = 1024, c = 576, n = 1024):
- Keccak.b = (r + c)
- Keccak.w = Keccak.b // 25
- Keccak.l = Keccak.lb(Keccak.w)
- Keccak.nr = 12 + (Keccak.l << 1)
- Keccak.wmod = (1 << Keccak.w) - 1
-
- S=[[0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0]]
-
- message = Keccak.pad10star1(M, r)
- nnn = len(message)
-
- rr = r >> 3
- cc = c >> 3
- nn = n >> 3
- ww = Keccak.w >> 3
+ def initalise(r, c, n):
+ '''
+ Initalise Keccak sponge
- #Absorbing phase
- msg_i =[[0, 0, 0, 0, 0],
+ @param r:int The bitrate
+ @param c:int The capacity
+ @param n:int The output size
+ '''
+ SHA3.r = r
+ SHA3.c = c
+ SHA3.n = n
+ SHA3.b = (r + c)
+ SHA3.w = SHA3.b // 25
+ SHA3.l = SHA3.lb(SHA3.w)
+ SHA3.nr = 12 + (SHA3.l << 1)
+ SHA3.wmod = (1 << SHA3.w) - 1
+ SHA3.S=[[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0],
[0, 0, 0, 0, 0]]
+ SHA3.M = bytes([])
+
+
+ @staticmethod
+ def update(msg):
+ '''
+ Absorb the more of the message message to the Keccak sponge
+
+ @param msg:bytes The partial message
+ '''
+ rr = SHA3.r >> 3
+ ww = SHA3.w >> 3
+
+ SHA3.M += msg
+ nnn = len(SHA3.M)
+ nnn -= nnn % rr
+ message = SHA3.M[:nnn]
+ SHA3.M = SHA3.M[nnn:]
+
+ # Absorbing phase
+ msg_i =[0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0]
m = nnn
- i = 0
- while i < m:
- for y in range(5):
- for x in range(5):
- off = (5 * y + x) * ww
- msg_i[x][y] = Keccak.toLane(message[i:], rr, ww, off)
- for y in range(5):
- for x in range(5):
- S[x][y] ^= msg_i[x][y]
- Keccak.keccakF(S)
- i += rr
+ for i in range(0, m, rr):
+ for j in range(25):
+ SHA3.S[j % 5][j // 5] ^= SHA3.toLane(message[i:], rr, ww, j * ww)
+ SHA3.keccakF(SHA3.S)
+
+
+ @staticmethod
+ def digest(msg):
+ '''
+ Absorb the last part of the message and squeeze the Keccak sponge
+ @param msg:bytes The rest of the message
+ '''
+ message = SHA3.pad10star1(SHA3.M + msg, SHA3.r)
+ nnn = len(message)
+ rc = [0] * ((SHA3.n + 7) >> 3)
+ ptr = 0
+
+ # Absorbing phase
+ rr = SHA3.r >> 3
+ ww = SHA3.w >> 3
+ msg_i =[0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0]
+ m = nnn
+ for i in range(0, m, rr):
+ for j in range(25):
+ SHA3.S[j % 5][j // 5] ^= SHA3.toLane(message[i:], rr, ww, j * ww)
+ SHA3.keccakF(SHA3.S)
- #Squeezing phase
- olen = n
+ # 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 = S[i % 5][i // 5]
+ v = SHA3.S[i % 5][i // 5]
for _ in range(8):
if (j < nn):
- sys.stdout.buffer.write(bytes([v & 255]))
+ rc[ptr] = v & 255
+ ptr += 1
v >>= 8
j += 1
i += 1
- olen -= r
+ olen -= SHA3.r
if olen > 0:
- Keccak.keccakF(S)
+ SHA3.keccakF(S)
+
+ return rc
output = 512
total = 1600
bitrate = total - output * 2
-MESSAGE = "The quick brown fox jumps over the lazy dog."
-SHA3.keccak([len(MESSAGE)*0, MESSAGE], bitrate, total - bitrate, output)
+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()
# 0e ab 42 de 4c 3c eb 92 35 fc 91 ac ff e7 46 b2
@@ -264,3 +359,39 @@ sys.stdout.buffer.flush()
# c0 0f a9 ca f9 d8 79 76 ba 46 9b cb e0 67 13 b4
# 35 f0 91 ef 27 69 fb 16 0c da b3 3d 36 70 68 0e
+# 87 e3 33 fa 22 26 2a aa 97 c4 4e ca 0a 92 67 3e
+# f0 06 1c d7 8b 5e 72 22 ca 51 a9 54 cb a0 4f 0d
+# 19 3a 82 2f 11 b8 3f 72 d0 41 7c 42 74 31 78 a9
+# c2 b9 e1 27 8e c9 4c b7 5d 50 88 aa b8 d2 60 c9
+
+
+'''
+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)
+
+ -c CAPACITY
+ --capacity The capacity to use for SHA-3. (default: 1024)
+
+ -w WORDSIZE
+ --wordsize The word size to use for SHA-3. (default: 64)
+
+ -o OUTPUTSIZE
+ --outputsize The output size to use for SHA-3. (default: 512)
+
+ -s STATESIZE
+ --statesize The state size to use for SHA-3. (default: 1600)
+
+ -i ITERATIONS
+ --iterations The number of hash iterations to run. (default: 1)
+
+ -b
+ --binary Print the checksum in binary, rather than hexadecimal.
+
+'''
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-11 09:55:48 +0000