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-rwxr-xr-xsrc/model/python/sha512.py77
1 files changed, 46 insertions, 31 deletions
diff --git a/src/model/python/sha512.py b/src/model/python/sha512.py
index b4d47e6..8116c20 100755
--- a/src/model/python/sha512.py
+++ b/src/model/python/sha512.py
@@ -12,7 +12,7 @@
# Author: Joachim Strömbergson
# Copyright (c) 2014, NORDUnet A/S
# All rights reserved.
-#
+#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
@@ -62,7 +62,7 @@ class SHA512():
'MODE_SHA_384', 'MODE_SHA_512']
self.mode = mode
self.verbose = verbose
- self.mode
+ self.mode
self.NUM_ROUNDS = 80
self.H = [0] * 8
self.t1 = 0
@@ -78,7 +78,7 @@ class SHA512():
self.w = 0
self.W = [0] * 16
self.k = 0
- self.K = [0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f,
+ self.K = [0x428a2f98d728ae22, 0x7137449123ef65cd, 0xb5c0fbcfec4d3b2f,
0xe9b5dba58189dbbc, 0x3956c25bf348b538, 0x59f111f1b605d019,
0x923f82a4af194f9b, 0xab1c5ed5da6d8118, 0xd807aa98a3030242,
0x12835b0145706fbe, 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2,
@@ -106,7 +106,7 @@ class SHA512():
0x431d67c49c100d4c, 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a,
0x5fcb6fab3ad6faec, 0x6c44198c4a475817]
-
+
def init(self):
if self.mode == 'MODE_SHA_512_224':
self.H = [0x8c3d37c819544da2, 0x73e1996689dcd4d6,
@@ -115,23 +115,23 @@ class SHA512():
0x3f9d85a86a1d36c8, 0x1112e6ad91d692a1]
elif self.mode == 'MODE_SHA_512_256':
- self.H = [0x22312194fc2bf72c, 0x9f555fa3c84c64c2,
- 0x2393b86b6f53b151, 0x963877195940eabd,
- 0x96283ee2a88effe3, 0xbe5e1e2553863992,
+ self.H = [0x22312194fc2bf72c, 0x9f555fa3c84c64c2,
+ 0x2393b86b6f53b151, 0x963877195940eabd,
+ 0x96283ee2a88effe3, 0xbe5e1e2553863992,
0x2b0199fc2c85b8aa, 0x0eb72ddc81c52ca2]
-
+
elif self.mode == 'MODE_SHA_384':
self.H = [0xcbbb9d5dc1059ed8, 0x629a292a367cd507,
- 0x9159015a3070dd17, 0x152fecd8f70e5939,
- 0x67332667ffc00b31, 0x8eb44a8768581511,
+ 0x9159015a3070dd17, 0x152fecd8f70e5939,
+ 0x67332667ffc00b31, 0x8eb44a8768581511,
0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4]
elif self.mode == 'MODE_SHA_512':
self.H = [0x6a09e667f3bcc908, 0xbb67ae8584caa73b,
- 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,
- 0x510e527fade682d1, 0x9b05688c2b3e6c1f,
+ 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,
+ 0x510e527fade682d1, 0x9b05688c2b3e6c1f,
0x1f83d9abfb41bd6b, 0x5be0cd19137e2179]
-
+
def next(self, block):
self._W_schedule(block)
@@ -163,16 +163,16 @@ class SHA512():
def _copy_digest(self):
- self.a = self.H[0]
- self.b = self.H[1]
- self.c = self.H[2]
- self.d = self.H[3]
- self.e = self.H[4]
- self.f = self.H[5]
- self.g = self.H[6]
+ self.a = self.H[0]
+ self.b = self.H[1]
+ self.c = self.H[2]
+ self.d = self.H[3]
+ self.e = self.H[4]
+ self.f = self.H[5]
+ self.g = self.H[6]
self.h = self.H[7]
-
-
+
+
def _update_digest(self):
self.H[0] = (self.H[0] + self.a) & MAX_64BIT
self.H[1] = (self.H[1] + self.b) & MAX_64BIT
@@ -216,7 +216,7 @@ class SHA512():
else:
tmp_w = (self._delta1(self.W[14]) +
- self.W[9] +
+ self.W[9] +
self._delta0(self.W[1]) +
self.W[0]) & MAX_64BIT
for i in range(15):
@@ -251,10 +251,20 @@ class SHA512():
def _delta1(self, x):
return (self._rotr64(x, 19) ^ self._rotr64(x, 61) ^ self._shr64(x, 6))
-
+
def _T1(self, e, f, g, h, k, w):
- return (h + self._sigma1(e) + self._Ch(e, f, g) + k + w) & MAX_64BIT
+ T1 = (h + self._sigma1(e) + self._Ch(e, f, g) + k + w) & MAX_64BIT
+
+ if self.verbose:
+ print("Inputs, calculations and result for T1:")
+ print("e = 0x%016x, f = 0x%016x, g = 0x%016x, h = 0x%016x" % (e, f, g, h))
+ print("k = 0x%016x, w = 0x%016x" % (k, w))
+ print("Ch = 0x%016x, sigma1 = 0x%016x" % (self._Ch(e, f, g), self._sigma1(e)))
+ print("T1 = 0x%016x" % (T1))
+ print("")
+
+ return T1
def _T2(self, a, b, c):
@@ -264,11 +274,16 @@ class SHA512():
def _rotr64(self, n, r):
return ((n >> r) | (n << (64 - r))) & MAX_64BIT
-
+
def _shr64(self, n, r):
return (n >> r)
+#-------------------------------------------------------------------
+# compare_digests()
+#
+# Compare if two given digests are equal or not.
+#-------------------------------------------------------------------
def compare_digests(digest, expected):
if (digest != expected):
print("Error:")
@@ -278,8 +293,8 @@ def compare_digests(digest, expected):
print(expected)
else:
print("Test case ok.")
-
-
+
+
#-------------------------------------------------------------------
# main()
#
@@ -296,7 +311,7 @@ def main():
0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000,
0x0000000000000000, 0x0000000000000000, 0x0000000000000000, 0x0000000000000018]
-
+
my_sha512 = SHA512(mode = 'MODE_SHA_512', verbose=1);
TC1_expected = [0xDDAF35A193617ABA, 0xCC417349AE204131, 0x12E6FA4E89A97EA2, 0x0A9EEEE64B55D39A,
0x2192992A274FC1A8, 0x36BA3C23A3FEEBBD, 0x454D4423643CE80E, 0x2A9AC94FA54CA49F]
@@ -330,14 +345,14 @@ def main():
my_digest = my_sha512.get_digest()
compare_digests(my_digest, TC4_expected)
-
+
#-------------------------------------------------------------------
# __name__
# Python thingy which allows the file to be run standalone as
# well as parsed from within a Python interpreter.
#-------------------------------------------------------------------
-if __name__=="__main__":
+if __name__=="__main__":
# Run the main function.
sys.exit(main())