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-rwxr-xr-xsha3sum.py108
1 files changed, 76 insertions, 32 deletions
diff --git a/sha3sum.py b/sha3sum.py
index 33c5528..5742ec0 100755
--- a/sha3sum.py
+++ b/sha3sum.py
@@ -96,11 +96,7 @@ class SHA3:
@param x:int The value of which to calculate the binary logarithm
@return :int The binary logarithm
'''
- rc_a = 0 if (x & 0xFF00) == 0 else 8
- rc_b = 0 if (x & 0xF0F0) == 0 else 4
- rc_c = 0 if (x & 0xCCCC) == 0 else 2
- rc_d = 0 if (x & 0xAAAA) == 0 else 1
- return (rc_a + rc_b) + (rc_c + rc_d)
+ return ((0 if (x & 0xFF00) == 0 else 8) + (0 if (x & 0xF0F0) == 0 else 4)) + ((0 if (x & 0xCCCC) == 0 else 2) + (0 if (x & 0xAAAA) == 0 else 1))
@staticmethod
@@ -113,15 +109,14 @@ class SHA3:
'''
# θ step (step 1 and 2 of 3)
SHA3.C[0] = (A[0] ^ A[1]) ^ (A[2] ^ A[3]) ^ A[4]
- SHA3.C[1] = (A[5] ^ A[6]) ^ (A[7] ^ A[8]) ^ A[9]
SHA3.C[2] = (A[10] ^ A[11]) ^ (A[12] ^ A[13]) ^ A[14]
- SHA3.C[3] = (A[15] ^ A[16]) ^ (A[17] ^ A[18]) ^ A[19]
+ db = SHA3.C[0] ^ SHA3.rotate(SHA3.C[2], 1)
SHA3.C[4] = (A[20] ^ A[21]) ^ (A[22] ^ A[23]) ^ A[24]
-
+ dd = SHA3.C[2] ^ SHA3.rotate(SHA3.C[4], 1)
+ SHA3.C[1] = (A[5] ^ A[6]) ^ (A[7] ^ A[8]) ^ A[9]
da = SHA3.C[4] ^ SHA3.rotate(SHA3.C[1], 1)
- db = SHA3.C[0] ^ SHA3.rotate(SHA3.C[2], 1)
+ SHA3.C[3] = (A[15] ^ A[16]) ^ (A[17] ^ A[18]) ^ A[19]
dc = SHA3.C[1] ^ SHA3.rotate(SHA3.C[3], 1)
- dd = SHA3.C[2] ^ SHA3.rotate(SHA3.C[4], 1)
de = SHA3.C[3] ^ SHA3.rotate(SHA3.C[0], 1)
# ρ and π steps, with last part of θ
@@ -240,10 +235,10 @@ class SHA3:
'''
rc = 0
i = off + ww - 1
- n = len(message)
+ n = min(len(message), rr)
while i >= off:
rc <<= 8
- rc |= message[i] if (i < rr) and (i < n) else 0
+ rc |= message[i] if (i < n) else 0
i -= 1
return rc
@@ -276,8 +271,8 @@ class SHA3:
message = [0] * (nnn - nrf)
message[0] = bbbb
nnn -= nrf
- for i in range(1, nnn):
- message[i] = 0
+ #for i in range(1, nnn):
+ # message[i] = 0
message[nnn - 1] = 0x80
return msg[:nrf] + bytes(message)
@@ -326,16 +321,40 @@ class SHA3:
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
- for i in range(0, m, rr):
- for j in range(25):
- SHA3.S[j] ^= SHA3.toLane(message[i:], rr, ww, j * ww)
- SHA3.keccakF(SHA3.S)
+ if ww == 8:
+ for i in range(0, m, rr):
+ SHA3.S[ 0] ^= SHA3.toLane(message[i:], rr, 8, 0)
+ SHA3.S[ 1] ^= SHA3.toLane(message[i:], rr, 8, 8)
+ SHA3.S[ 2] ^= SHA3.toLane(message[i:], rr, 8, 16)
+ SHA3.S[ 3] ^= SHA3.toLane(message[i:], rr, 8, 24)
+ SHA3.S[ 4] ^= SHA3.toLane(message[i:], rr, 8, 32)
+ SHA3.S[ 5] ^= SHA3.toLane(message[i:], rr, 8, 40)
+ SHA3.S[ 6] ^= SHA3.toLane(message[i:], rr, 8, 48)
+ SHA3.S[ 7] ^= SHA3.toLane(message[i:], rr, 8, 56)
+ SHA3.S[ 8] ^= SHA3.toLane(message[i:], rr, 8, 64)
+ SHA3.S[ 9] ^= SHA3.toLane(message[i:], rr, 8, 72)
+ SHA3.S[10] ^= SHA3.toLane(message[i:], rr, 8, 80)
+ SHA3.S[11] ^= SHA3.toLane(message[i:], rr, 8, 88)
+ SHA3.S[12] ^= SHA3.toLane(message[i:], rr, 8, 96)
+ SHA3.S[13] ^= SHA3.toLane(message[i:], rr, 8, 104)
+ SHA3.S[14] ^= SHA3.toLane(message[i:], rr, 8, 112)
+ SHA3.S[15] ^= SHA3.toLane(message[i:], rr, 8, 120)
+ SHA3.S[16] ^= SHA3.toLane(message[i:], rr, 8, 128)
+ SHA3.S[17] ^= SHA3.toLane(message[i:], rr, 8, 136)
+ SHA3.S[18] ^= SHA3.toLane(message[i:], rr, 8, 144)
+ SHA3.S[19] ^= SHA3.toLane(message[i:], rr, 8, 152)
+ SHA3.S[20] ^= SHA3.toLane(message[i:], rr, 8, 160)
+ SHA3.S[21] ^= SHA3.toLane(message[i:], rr, 8, 168)
+ SHA3.S[22] ^= SHA3.toLane(message[i:], rr, 8, 176)
+ SHA3.S[23] ^= SHA3.toLane(message[i:], rr, 8, 184)
+ SHA3.S[24] ^= SHA3.toLane(message[i:], rr, 8, 192)
+ SHA3.keccakF(SHA3.S)
+ else:
+ for i in range(0, m, rr):
+ for j in range(25):
+ SHA3.S[j] ^= SHA3.toLane(message[i:], rr, ww, j * ww)
+ SHA3.keccakF(SHA3.S)
@staticmethod
@@ -358,16 +377,40 @@ class SHA3:
ww = SHA3.w >> 3
# 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
- for i in range(0, m, rr):
- for j in range(25):
- SHA3.S[j] ^= SHA3.toLane(message[i:], rr, ww, j * ww)
- SHA3.keccakF(SHA3.S)
+ if ww == 8:
+ for i in range(0, m, rr):
+ SHA3.S[ 0] ^= SHA3.toLane(message[i:], rr, 8, 0)
+ SHA3.S[ 1] ^= SHA3.toLane(message[i:], rr, 8, 8)
+ SHA3.S[ 2] ^= SHA3.toLane(message[i:], rr, 8, 16)
+ SHA3.S[ 3] ^= SHA3.toLane(message[i:], rr, 8, 24)
+ SHA3.S[ 4] ^= SHA3.toLane(message[i:], rr, 8, 32)
+ SHA3.S[ 5] ^= SHA3.toLane(message[i:], rr, 8, 40)
+ SHA3.S[ 6] ^= SHA3.toLane(message[i:], rr, 8, 48)
+ SHA3.S[ 7] ^= SHA3.toLane(message[i:], rr, 8, 56)
+ SHA3.S[ 8] ^= SHA3.toLane(message[i:], rr, 8, 64)
+ SHA3.S[ 9] ^= SHA3.toLane(message[i:], rr, 8, 72)
+ SHA3.S[10] ^= SHA3.toLane(message[i:], rr, 8, 80)
+ SHA3.S[11] ^= SHA3.toLane(message[i:], rr, 8, 88)
+ SHA3.S[12] ^= SHA3.toLane(message[i:], rr, 8, 96)
+ SHA3.S[13] ^= SHA3.toLane(message[i:], rr, 8, 104)
+ SHA3.S[14] ^= SHA3.toLane(message[i:], rr, 8, 112)
+ SHA3.S[15] ^= SHA3.toLane(message[i:], rr, 8, 120)
+ SHA3.S[16] ^= SHA3.toLane(message[i:], rr, 8, 128)
+ SHA3.S[17] ^= SHA3.toLane(message[i:], rr, 8, 136)
+ SHA3.S[18] ^= SHA3.toLane(message[i:], rr, 8, 144)
+ SHA3.S[19] ^= SHA3.toLane(message[i:], rr, 8, 152)
+ SHA3.S[20] ^= SHA3.toLane(message[i:], rr, 8, 160)
+ SHA3.S[21] ^= SHA3.toLane(message[i:], rr, 8, 168)
+ SHA3.S[22] ^= SHA3.toLane(message[i:], rr, 8, 176)
+ SHA3.S[23] ^= SHA3.toLane(message[i:], rr, 8, 184)
+ SHA3.S[24] ^= SHA3.toLane(message[i:], rr, 8, 192)
+ SHA3.keccakF(SHA3.S)
+ else:
+ for i in range(0, m, rr):
+ for j in range(25):
+ SHA3.S[j] ^= SHA3.toLane(message[i:], rr, ww, j * ww)
+ SHA3.keccakF(SHA3.S)
# Squeezing phase
olen = SHA3.n
@@ -391,6 +434,7 @@ class SHA3:
return bytes(rc)
+
if __name__ == '__main__':
cmd = sys.argv[0]
args = sys.argv[1:]
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-30 20:46:11 +0000