X-Git-Url: https://git.cryptolib.org/?p=avr-crypto-lib.git;a=blobdiff_plain;f=jh%2Fjh_tablegen.rb;fp=jh%2Fjh_tablegen.rb;h=5862a0e21193e5f325124a24e711c590b238b927;hp=0000000000000000000000000000000000000000;hb=bd740a03aa9137d46277a2eee05ac6be538ef69d;hpb=b8d6b2bd3ddea45506f584c7d44fe5fff0557ed1

diff --git a/jh/jh_tablegen.rb b/jh/jh_tablegen.rb
new file mode 100644
index 0000000..5862a0e
--- /dev/null
+++ b/jh/jh_tablegen.rb
@@ -0,0 +1,347 @@
+#!/usr/bin/ruby
+# jh_tablegen.rb
+=begin
+    This file is part of the AVR-Crypto-Lib.
+    Copyright (C) 2010  Daniel Otte (daniel.otte@rub.de)
+
+    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/>.
+=end
+
+$sbox0 = [  9,  0,  4, 11, 13, 12,  3, 15,  1, 10,  2,  6,  7,  5,  8, 14]
+$sbox1 = [  3, 12,  6, 13,  5,  7,  1,  9, 15,  2,  0,  4, 11, 10, 14,  8]
+
+# (b) ^= ( ( (a) << 1) ^ ( (a) >> 3) ^ (( (a) >> 2) & 2) ) & 0xf;   
+# (a) ^= ( ( (b) << 1) ^ ( (b) >> 3) ^ (( (b) >> 2) & 2) ) & 0xf;     
+
+def L_transform(v,w)
+  v = v&0x0f; w = w&0x0f
+ # a = ((v<<1)|(v>>3))&0xf
+ # d = a^w^((v>>2)&2)
+ # d_ = ((d<<1)|(d>>3))&0xf
+ # c = v^d_^((d>>2)&2)
+ # return c, d
+ w ^= ((v<<1)^(v>>3)^((v>>2)&2))&0x0f
+ v ^= ((w<<1)^(w>>3)^((w>>2)&2))&0x0f
+ return v,w
+end
+
+def L_transform_inv(v,w)
+  a,b = L_transform(w,v)
+  return b,a
+end
+
+
+def pi_permute(a, d=8)
+  b=Array.new
+  (2**(d-2)).times{ |i| b[4*i+0] = a[4*i+0]}
+  (2**(d-2)).times{ |i| b[4*i+1] = a[4*i+1]}
+  (2**(d-2)).times{ |i| b[4*i+2] = a[4*i+3]}
+  (2**(d-2)).times{ |i| b[4*i+3] = a[4*i+2]}
+  return b
+end
+
+def p_permute(a, d=8)
+  b=Array.new
+  (2**(d-1)).times{ |i| b[i] = a[2*i]}
+  (2**(d-1)).times{ |i| b[i+2**(d-1)] = a[2*i+1]}
+  return b
+end
+
+def phi_permute(a, d=8)
+  b=Array.new
+  (2**(d-1)).times{ |i| b[i] = a[i]}
+  (2**(d-2)).times{ |i| b[2**(d-1)+2*i+0] = a[2**(d-1)+2*i+1]}
+  (2**(d-2)).times{ |i| b[2**(d-1)+2*i+1] = a[2**(d-1)+2*i+0]}
+  return b
+end
+
+def test_permutations
+  a = Array.new
+  16.times{|i| a[i]=i}
+  puts a.inspect
+  b = pi_permute(a,4)
+  puts b.inspect
+  b = p_permute(a,4)
+  puts b.inspect
+  b = phi_permute(a,4)
+  puts b.inspect
+end
+
+def permutation(a, d=8)
+  return phi_permute(p_permute(pi_permute(a,d),d),d)
+end
+
+$permutation_table=Array.new
+
+def gen_permutation_table
+  a = Array.new
+  256.times {|i| a<<i}
+  $permutation_table=permutation(a,8)
+end
+
+def print_permute_table
+  printf("\npermutation table:\n\t")
+  16.times do |y|
+    16.times do |x| 
+      printf("0x%02X, ", $permutation_table[y*16+x])
+    end
+    printf("\n\t")
+  end
+  puts("")
+end
+
+$nibble_invert=false
+
+
+def split_byte(v)
+  a = (v>>4)&0xf
+  b = v&0xf
+  return b,a if $nibble_invert
+  return a,b
+end
+
+def join_nibbles(a,b)
+  if($nibble_invert)
+    v = ((b<<4)|(a&0xf))&0xff
+  else
+    v = ((a<<4)|(b&0xf))&0xff
+  end
+  return v
+end
+
+$lutbox=Array.new
+
+def gen_lutboxes
+  4.times do |box|
+    $lutbox[box]=Array.new
+    256.times do |i|
+      a,b = split_byte(i)
+      a = ((box&2)==2)?$sbox1[a]:$sbox0[a]
+      b = ((box&1)==1)?$sbox1[b]:$sbox0[b]
+      c,d = L_transform(a,b)
+      $lutbox[box]<<join_nibbles(c,d)
+    end
+  end
+end
+
+def print_lutbox(n)
+  printf("\nSBOX%d:\n\t",n)
+  256.times do |i|
+    printf("0x%02X, ",$lutbox[n][i])
+    print("\n\t") if(i%16==15)
+  end
+end
+
+
+
+$round_const = [
+  0x6a09e667f3bcc908b2fb1366ea957d3e3adec17512775099da2f590b0667322a,
+  0xbb896bf05955abcd5281828d66e7d99ac4203494f89bf12817deb43288712231,
+  0x1836e76b12d79c55118a1139d2417df52a2021225ff6350063d88e5f1f91631c,
+  0x263085a7000fa9c3317c6ca8ab65f7a7713cf4201060ce886af855a90d6a4eed,
+  0x1cebafd51a156aeb62a11fb3be2e14f60b7e48de85814270fd62e97614d7b441,
+  0xe5564cb574f7e09c75e2e244929e9549279ab224a28e445d57185e7d7a09fdc1,
+  0x5820f0f0d764cff3a5552a5e41a82b9eff6ee0aa615773bb07e8603424c3cf8a,
+  0xb126fb741733c5bfcef6f43a62e8e5706a26656028aa897ec1ea4616ce8fd510,
+  0xdbf0de32bca77254bb4f562581a3bc991cf94f225652c27f14eae958ae6aa616,
+  0xe6113be617f45f3de53cff03919a94c32c927b093ac8f23b47f7189aadb9bc67,
+  0x80d0d26052ca45d593ab5fb3102506390083afb5ffe107dacfcba7dbe601a12b,
+  0x43af1c76126714dfa950c368787c81ae3beecf956c85c962086ae16e40ebb0b4,
+  0x9aee8994d2d74a5cdb7b1ef294eed5c1520724dd8ed58c92d3f0e174b0c32045,
+  0x0b2aa58ceb3bdb9e1eef66b376e0c565d5d8fe7bacb8da866f859ac521f3d571,
+  0x7a1523ef3d970a3a9b0b4d610e02749d37b8d57c1885fe4206a7f338e8356866,
+  0x2c2db8f7876685f2cd9a2e0ddb64c9d5bf13905371fc39e0fa86e1477234a297,
+  0x9df085eb2544ebf62b50686a71e6e828dfed9dbe0b106c9452ceddff3d138990,
+  0xe6e5c42cb2d460c9d6e4791a1681bb2e222e54558eb78d5244e217d1bfcf5058,
+  0x8f1f57e44e126210f00763ff57da208a5093b8ff7947534a4c260a17642f72b2,
+  0xae4ef4792ea148608cf116cb2bff66e8fc74811266cd641112cd17801ed38b59,
+  0x91a744efbf68b192d0549b608bdb3191fc12a0e83543cec5f882250b244f78e4,
+  0x4b5d27d3368f9c17d4b2a2b216c7e74e7714d2cc03e1e44588cd9936de74357c,
+  0x0ea17cafb8286131bda9e3757b3610aa3f77a6d0575053fc926eea7e237df289,
+  0x848af9f57eb1a616e2c342c8cea528b8a95a5d16d9d87be9bb3784d0c351c32b,
+  0xc0435cc3654fb85dd9335ba91ac3dbde1f85d567d7ad16f9de6e009bca3f95b5,
+  0x927547fe5e5e45e2fe99f1651ea1cbf097dc3a3d40ddd21cee260543c288ec6b,
+  0xc117a3770d3a34469d50dfa7db020300d306a365374fa828c8b780ee1b9d7a34,
+  0x8ff2178ae2dbe5e872fac789a34bc228debf54a882743caad14f3a550fdbe68f,
+  0xabd06c52ed58ff091205d0f627574c8cbc1fe7cf79210f5a2286f6e23a27efa0,
+  0x631f4acb8d3ca4253e301849f157571d3211b6c1045347befb7c77df3c6ca7bd,
+  0xae88f2342c23344590be2014fab4f179fd4bf7c90db14fa4018fcce689d2127b,
+  0x93b89385546d71379fe41c39bc602e8b7c8b2f78ee914d1f0af0d437a189a8a4,
+  0x1d1e036abeef3f44848cd76ef6baa889fcec56cd7967eb909a464bfc23c72435,
+  0xa8e4ede4c5fe5e88d4fb192e0a0821e935ba145bbfc59c2508282755a5df53a5,
+  0x8e4e37a3b970f079ae9d22a499a714c875760273f74a9398995d32c05027d810,
+  0x61cfa42792f93b9fde36eb163e978709fafa7616ec3c7dad0135806c3d91a21b
+]
+
+def group(a)
+  q = Array.new
+  128.times do |i|
+    q[2*i] = ((a[i/8])>>4)&0x8 | ((a[i/8+32])>>5)&0x4 | ((a[i/8+64])>>6)&0x2 | ((a[i/8+96])>>7)&0x1
+    a[i/8] <<= 1; a[i/8+32]<<=1; a[i/8+64]<<=1; a[i/8+96]<<=1;
+    q[2*i+1] = ((a[i/8+16])>>4)&0x8 | ((a[i/8+48])>>5)&0x4 | ((a[i/8+80])>>6)&0x2 | ((a[i/8+112])>>7)&0x1
+    a[i/8+16] <<= 1; a[i/8+48]<<=1; a[i/8+80]<<=1; a[i/8+112]<<=1;  
+  end
+  b = Array.new
+  128.times {|i| b<<join_nibbles(q[2*i], q[2*i+1])}
+  return b
+end
+
+def degroup(a)
+  b = Array.new
+  128.times {|i| b[i]=0}
+  128.times do |i|
+    b[i/8+  0]<<=1; b[i/8+  0] |= (a[i]>>7)&1; a[i]<<=1
+    b[i/8+ 32]<<=1; b[i/8+ 32] |= (a[i]>>7)&1; a[i]<<=1
+    b[i/8+ 64]<<=1; b[i/8+ 64] |= (a[i]>>7)&1; a[i]<<=1
+    b[i/8+ 96]<<=1; b[i/8+ 96] |= (a[i]>>7)&1; a[i]<<=1
+    b[i/8+ 16]<<=1; b[i/8+ 16] |= (a[i]>>7)&1; a[i]<<=1
+    b[i/8+ 48]<<=1; b[i/8+ 48] |= (a[i]>>7)&1; a[i]<<=1
+    b[i/8+ 80]<<=1; b[i/8+ 80] |= (a[i]>>7)&1; a[i]<<=1
+    b[i/8+112]<<=1; b[i/8+112] |= (a[i]>>7)&1; a[i]<<=1
+  end
+  return b
+end
+
+# data is an array of bytes
+#
+def single_round(data, round)
+  a = Array.new
+  rc = $round_const[round]
+=begin
+  printf("\n== round %2d==\n\t", round)
+  16.times do |y|
+    8.times do |x|
+      printf("%02X ", data[8*y+x])
+    end
+    print("\n\t")
+  end
+=end
+  128.times do |idx| 
+    x,y=split_byte($lutbox[((rc)>>(254))&0x3][data[idx]])
+    rc <<= 2
+    a << x << y
+  end 
+  a = permutation(a)
+  b = Array.new
+  128.times {|idx| b << join_nibbles(a[2*idx],a[2*idx+1])}
+  return b
+end
+
+def encrypt(data)
+=begin  
+  print("\n== ENCRYPT ==\n")
+  print("=== pre group: ===\n\t")
+  16.times do |y|
+    8.times do |x|
+      printf("%02X ", data[8*y+x])
+    end
+    print("\n\t")
+  end
+  puts("")
+=end
+  data = group(data)
+=begin
+  print("=== post group: ===\n\t")
+  16.times do |y|
+    8.times do |x|
+      printf("%02X ", data[8*y+x])
+    end
+    print("\n\t")
+  end
+  puts("")
+=end
+  35.times do |round|
+    data = single_round(data, round)
+  end
+  a = Array.new
+  rc = $round_const[35]
+  data.length.times do |idx| 
+    x, y = split_byte($lutbox[(rc>>254)&3][data[idx]])
+    rc <<= 2
+    v, w = L_transform_inv(x, y)
+    a << join_nibbles(v,w)
+  end  
+  a = degroup(a)
+=begin
+  print("\n=== post enc: ===\n\t")
+  16.times do |y|
+    8.times do |x|
+      printf("%02X ", a[8*y+x])
+    end
+    print("\n\t")
+  end
+  puts("")
+=end
+  return a
+end
+
+def hash_block(state_a, block)
+  64.times { |i| state_a[i] ^= block[i]}
+  state_a = encrypt(state_a)
+  64.times { |i| state_a[64+i] ^= block[i]}
+  return state_a
+end
+
+def test_L_inverse
+  print("\nL_inv_test:\n\t")
+  256.times do |i|
+    a,b = split_byte(i)
+    c,d = L_transform(a, b)
+    a,b = L_transform_inv(c, d)
+    if join_nibbles(a,b)==i
+      print('*')
+    else
+      print('!')
+    end
+    print("\n\t") if(i%16==15)
+  end
+end
+#test_permutations
+
+gen_lutboxes
+gen_permutation_table
+print_permute_table
+4.times{ |i| print_lutbox(i) }
+test_L_inverse
+print("\nsingle round:\n\t")
+h =  single_round([0,0,0,0,0,0,0,0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+              0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+              0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+              0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],0)
+16.times do |y|
+  8.times do |x|
+    printf("%02X, ",h[y*8+x])
+  end
+  print("\n\t")
+end
+#=begin
+print("\nH(0):\n\t")
+h =  hash_block([0x01,0,0,0,0,0,0,0x0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+                 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+                 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+                 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
+                [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+                 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0])
+h =  hash_block(h,
+                [0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+                 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0])
+16.times do |y|
+  8.times do |x|
+    printf("%02X, ",h[y*8+x])
+  end
+  print("\n\t")
+end
+#=end
+puts("")
+