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annotate libtomcrypt/notes/etc/NoekeonVects.java @ 1607:0bdbb9ecc403

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avoid leak of ecdh public key
author Matt Johnston <matt@ucc.asn.au>
date Thu, 08 Mar 2018 23:51:33 +0800
parents 6dba84798cd5
children
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1 /*
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2 NoekeonVects.java - Generate Noekeon test vectors using BouncyCastle.
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3
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4 Written in 2011 by Patrick Pelletier <[email protected]>
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5
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6 To the extent possible under law, the author(s) have dedicated all
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7 copyright and related and neighboring rights to this software to
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8 the public domain worldwide. This software is distributed without
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9 any warranty.
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10
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11 This file is dedicated to the public domain with the CC0 Public Domain
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12 Dedication: http://creativecommons.org/publicdomain/zero/1.0/legalcode.txt
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13
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14 You may also consider this file to be covered by the WTFPL, as contained
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15 in the LibTomCrypt LICENSE file, if that makes you happier for some reason.
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16
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17 ----------------------------------------------------------------------
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18
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19 This program was inspired by the comment in Botan 1.10.1's
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20 doc/examples/eax_test.cpp:
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21
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22 // Noekeon: unknown cause, though LTC's lone test vector does not
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23 // match Botan
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24
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25 So, I investigated the discrepancy by comparing them with a third
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26 implementation, BouncyCastle: http://www.bouncycastle.org/java.html
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27
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28 I determined that there are two reasons why LibTomCrypt's Noekeon does
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29 not match Botan:
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30
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31 1) Botan uses "indirect Noekeon" (with a key schedule), while
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32 LibTomCrypt and BouncyCastle both use "direct Noekeon" (without
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33 a key schedule). See slide 14 of
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34 http://gro.noekeon.org/Noekeon-slides.pdf
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35
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36 2) However, LibTomCrypt's direct Noekeon still does not match
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37 BouncyCastle's direct Noekeon. This is because of a bug in
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38 LibTomCrypt's PI1 and PI2 functions:
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39 https://github.com/libtom/libtomcrypt/issues/5
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40
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41 This program uses BouncyCastle to produce test vectors which are
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42 suitable for Botan (by explicitly scheduling the key, thus
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43 building indirect Noekeon out of BouncyCastle's direct Noekeon),
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44 and also produces test vectors which would be suitable for
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45 LibTomCrypt (direct Noekeon) once its PI1 and PI2 functions are
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46 fixed to match the Noekeon specification.
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47
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48 Although this program uses a PRNG from BouncyCastle to generate
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49 data for the test vectors, it uses a fixed seed and thus will
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50 produce the same output every time it is run.
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51 */
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52
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53 import java.io.ByteArrayOutputStream;
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54 import java.io.IOException;
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55 import java.util.Locale;
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56 import org.bouncycastle.crypto.digests.RIPEMD128Digest;
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57 import org.bouncycastle.crypto.engines.NoekeonEngine;
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58 import org.bouncycastle.crypto.modes.EAXBlockCipher;
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59 import org.bouncycastle.crypto.params.AEADParameters;
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60 import org.bouncycastle.crypto.params.KeyParameter;
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61 import org.bouncycastle.crypto.prng.DigestRandomGenerator;
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62 import org.bouncycastle.util.encoders.HexEncoder;
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63
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64 public class NoekeonVects
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65 {
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66 private final DigestRandomGenerator r =
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67 new DigestRandomGenerator(new RIPEMD128Digest());
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68
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69 private final HexEncoder h = new HexEncoder();
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70
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71 private final NoekeonEngine noekeon = new NoekeonEngine();
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72
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73 private final KeyParameter null_key = new KeyParameter(new byte[16]);
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74
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75 private final boolean schedule_key;
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76
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77 private final boolean botan_format;
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78
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79 private byte[] randomBytes(int n)
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80 {
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81 byte[] b = new byte[n];
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82 r.nextBytes(b);
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83 return b;
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84 }
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85
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86 private void hexOut(byte[] b) throws IOException
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87 {
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88 // HexEncoder uses lowercase, and Botan's test vectors must
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89 // be in uppercase, so...
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90 ByteArrayOutputStream os = new ByteArrayOutputStream();
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91 h.encode(b, 0, b.length, os);
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92 String s = os.toString("US-ASCII");
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93 System.out.print(s.toUpperCase(Locale.US));
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94 }
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95
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96 private void printCArray(byte[] a) throws IOException
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97 {
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98 byte[] b = new byte[1];
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99 for (int i = 0; i < a.length; i++)
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100 {
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101 if (i > 0)
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102 System.out.print(", ");
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103 System.out.print("0x");
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104 b[0] = a[i];
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105 hexOut(b);
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106 }
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107 }
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108
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109 private void printVector(byte[] key, byte[] plaintext, byte[] ciphertext)
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110 throws IOException
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111 {
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112 if (botan_format)
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113 {
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114 hexOut(plaintext);
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115 System.out.print(":");
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116 hexOut(ciphertext);
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117 System.out.println(":\\");
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118 hexOut(key);
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119 System.out.println();
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120 }
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121 else
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122 {
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123 System.out.println(" {");
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124 System.out.println(" 16,");
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125 System.out.print(" { ");
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126 printCArray (key);
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127 System.out.println(" },");
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128 System.out.print(" { ");
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129 printCArray (plaintext);
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130 System.out.println(" },");
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131 System.out.print(" { ");
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132 printCArray (ciphertext);
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133 System.out.println(" }");
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diff changeset
134 System.out.println(" },");
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135 }
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diff changeset
136 }
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137
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diff changeset
138 private KeyParameter maybe_schedule_key(byte[] key)
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diff changeset
139 {
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diff changeset
140 if (schedule_key)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
141 {
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diff changeset
142 noekeon.init(true, null_key);
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143 byte[] scheduled = new byte[16];
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diff changeset
144 noekeon.processBlock(key, 0, scheduled, 0);
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145 return new KeyParameter(scheduled);
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146 }
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diff changeset
147 else
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148 return new KeyParameter(key);
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diff changeset
149 }
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150
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diff changeset
151 private byte[] encrypt(byte[] plaintext, byte[] key)
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152 {
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153 KeyParameter kp = maybe_schedule_key(key);
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diff changeset
154 noekeon.init(true, kp);
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diff changeset
155 byte[] ciphertext = new byte[16];
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diff changeset
156 noekeon.processBlock(plaintext, 0, ciphertext, 0);
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diff changeset
157 return ciphertext;
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diff changeset
158 }
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diff changeset
159
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diff changeset
160 public NoekeonVects(long seed, boolean schedule_key, boolean botan_format)
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parents:
diff changeset
161 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
162 this.schedule_key = schedule_key;
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diff changeset
163 this.botan_format = botan_format;
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
164 r.addSeedMaterial(seed);
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diff changeset
165 }
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diff changeset
166
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diff changeset
167 public void ecb_vectors() throws IOException
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diff changeset
168 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
169 for (int i = 0; i < 8; i++)
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parents:
diff changeset
170 {
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
171 byte[] key = randomBytes(16);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 byte[] plaintext = randomBytes(16);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 byte[] ciphertext = encrypt(plaintext, key);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 printVector(key, plaintext, ciphertext);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
177
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diff changeset
178 public void eax_vectors() throws Exception
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
179 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
180 System.out.println("EAX-noekeon (16 byte key)");
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parents:
diff changeset
181 EAXBlockCipher eax = new EAXBlockCipher(new NoekeonEngine());
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parents:
diff changeset
182 byte[] output = new byte[48];
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parents:
diff changeset
183 byte[] tag = new byte[16];
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parents:
diff changeset
184
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
185 for (int j = 0; j < 16; j++)
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parents:
diff changeset
186 tag[j] = (byte) j;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
187
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
188 for (int i = 0; i <= 32; i++)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190 byte[] header_nonce_plaintext = new byte[i];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
191 for (int j = 0; j < i; j++)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
192 header_nonce_plaintext[j] = (byte) j;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
193 AEADParameters params =
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
194 new AEADParameters(maybe_schedule_key(tag),
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diff changeset
195 128,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
196 header_nonce_plaintext,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197 header_nonce_plaintext);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
198 eax.init(true, params);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199 int off = eax.processBytes(header_nonce_plaintext, 0, i,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200 output, 0);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201 off += eax.doFinal(output, off);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
202 if (off != i + 16)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
203 throw new RuntimeException("didn't expect that");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
204 byte[] ciphertext = new byte[i];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
205 for (int j = 0; j < i; j++)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
206 ciphertext[j] = output[j];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
207 for (int j = 0; j < 16; j++)
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
208 tag[j] = output[i + j];
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
209 System.out.print(i < 10 ? " " : " ");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
210 System.out.print(i);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
211 System.out.print(": ");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 hexOut(ciphertext);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents:
diff changeset
213 System.out.print(", ");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214 hexOut(tag);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 System.out.println();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 public static void main(String[] argv) throws Exception
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220 {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 NoekeonVects bot = new NoekeonVects(0xdefacedbadfacadeL, true, true);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 NoekeonVects tom = new NoekeonVects(0xdefacedbadfacadeL, false, false);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 System.out.println("# ECB vectors for indirect Noekeon, in Botan's");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 System.out.println("# test vector format, suitable for insertion");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 System.out.println("# into Botan's file checks/validate.dat");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226 System.out.println("# Block cipher format is plaintext:ciphertext:key");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
227 bot.ecb_vectors();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
228 System.out.println();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 System.out.println("/* ECB vectors for direct Noekeon, as C arrays");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230 System.out.println(" * suitable for insertion into LibTomCrypt's");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 System.out.println(" * noekeon_test() in src/ciphers/noekeon.c,");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
232 System.out.println(" * once LTC's PI1/PI2 bug is fixed. */");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
233 tom.ecb_vectors();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 System.out.println();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 System.out.println("# EAX vectors for indirect Noekeon, in the format");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 System.out.println("# generated by LTC's demos/tv_gen.c and consumed");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237 System.out.println("# by Botan's doc/examples/eax_test.cpp, suitable");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 System.out.println("# for insertion in Botan's doc/examples/eax.vec");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239 bot.eax_vectors();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 System.out.println();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 System.out.println("# EAX vectors for direct Noekeon, in the format");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 System.out.println("# generated by LTC's demos/tv_gen.c and consumed");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 System.out.println("# by Botan's doc/examples/eax_test.cpp, which");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 System.out.println("# should match LTC's notes/eax_tv.txt, once");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 System.out.println("# LTC's PI1/PI2 bug is fixed.");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246 tom.eax_vectors();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247 System.out.flush();
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
248 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
249 }