From f69f454a5e3f56a96f6d28bb48c661630e31e300 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Joachim=20Stro=CC=88mbergson?= Date: Tue, 1 Apr 2014 09:51:38 +0200 Subject: Updating sha256 python model with NIST dual block test case and test case with huge message. Disabling verbose mode. --- src/model/sha256.py | 58 ++++++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 51 insertions(+), 7 deletions(-) (limited to 'src/model') diff --git a/src/model/sha256.py b/src/model/sha256.py index 2a56f41..ca0a77c 100755 --- a/src/model/sha256.py +++ b/src/model/sha256.py @@ -10,7 +10,7 @@ # # # Author: Joachim Strömbergson -# Copyright (c) 2014 SUNET +# Copyright (c) 2014, SUNET # # Redistribution and use in source and binary forms, with or # without modification, are permitted provided that the following @@ -45,11 +45,6 @@ import sys -#------------------------------------------------------------------- -# Constants. -#------------------------------------------------------------------- - - #------------------------------------------------------------------- # ChaCha() #------------------------------------------------------------------- @@ -240,9 +235,10 @@ def main(): print("---------------------------------") print - my_sha256 = SHA256(verbose=1); + my_sha256 = SHA256(verbose=0); # TC1: NIST testcase with message "abc" + print("TC1: Single block message test specified by NIST.") TC1_block = [0x61626380, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000, @@ -255,7 +251,55 @@ def main(): my_sha256.next(TC1_block) my_digest = my_sha256.get_digest() compare_digests(my_digest, TC1_expected) + print("") + + + # TC2: NIST testcase with double block message." + print("TC2: Double block message test specified by NIST.") + TC2_1_block = [0x61626364, 0x62636465, 0x63646566, 0x64656667, + 0x65666768, 0x66676869, 0x6768696A, 0x68696A6B, + 0x696A6B6C, 0x6A6B6C6D, 0x6B6C6D6E, 0x6C6D6E6F, + 0x6D6E6F70, 0x6E6F7071, 0x80000000, 0x00000000] + + + TC2_2_block = [0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x00000000, 0x00000000, 0x000001C0] + + TC2_1_expected = [0x85E655D6, 0x417A1795, 0x3363376A, 0x624CDE5C, + 0x76E09589, 0xCAC5F811, 0xCC4B32C1, 0xF20E533A] + + TC2_2_expected = [0x248D6A61, 0xD20638B8, 0xE5C02693, 0x0C3E6039, + 0xA33CE459, 0x64FF2167, 0xF6ECEDD4, 0x19DB06C1] + my_sha256.init() + my_sha256.next(TC2_1_block) + my_digest = my_sha256.get_digest() + compare_digests(my_digest, TC2_1_expected) + + my_sha256.next(TC2_2_block) + my_digest = my_sha256.get_digest() + compare_digests(my_digest, TC2_2_expected) + print("") + + + # TC3: Huge message with n blocks + n = 10000 + print("TC3: Huge message with %d blocks test case." % n) + TC3_block = [0xaa55aa55, 0xdeadbeef, 0x55aa55aa, 0xf00ff00f, + 0xaa55aa55, 0xdeadbeef, 0x55aa55aa, 0xf00ff00f, + 0xaa55aa55, 0xdeadbeef, 0x55aa55aa, 0xf00ff00f, + 0xaa55aa55, 0xdeadbeef, 0x55aa55aa, 0xf00ff00f] + + TC3_expected = [0xf407ff0d, 0xb9dce2f6, 0x9b9759a9, 0xd3cdc805, + 0xf250086d, 0x73bbefd5, 0xa972e0f7, 0x61a9c13e] + + my_sha256.init() + for i in range(n): + my_sha256.next(TC3_block) + my_digest = my_sha256.get_digest() + compare_digests(my_digest, TC3_expected) #------------------------------------------------------------------- -- cgit v1.2.3