/* * Copyright 2011 by Graz University of Technology, Austria * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint * initiative of the Federal Chancellery Austria and Graz University of Technology. * * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by * the European Commission - subsequent versions of the EUPL (the "Licence"); * You may not use this work except in compliance with the Licence. * You may obtain a copy of the Licence at: * http://www.osor.eu/eupl/ * * Unless required by applicable law or agreed to in writing, software * distributed under the Licence is distributed on an "AS IS" basis, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the Licence for the specific language governing permissions and * limitations under the Licence. * * This product combines work with different licenses. See the "NOTICE" text * file for details on the various modules and licenses. * The "NOTICE" text file is part of the distribution. Any derivative works * that you distribute must include a readable copy of the "NOTICE" text file. */ package at.gv.egiz.smcc.activation; import iaik.security.provider.IAIK; import iaik.utils.CryptoUtils; import iaik.utils.Util; import java.security.GeneralSecurityException; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import java.security.NoSuchProviderException; import java.util.Arrays; import java.util.Random; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.SecretKey; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import junit.framework.TestCase; public class TestRetailCBCMac extends TestCase { final static String[] PLAIN_DATA = { "5A 10 D3 0E FC F6 5D 7F 89 FF B6 69 E4 8C 1C 88 C9 D3 AB "+ "74 3D B0 2C DB 00 00 00 23 00 78 71 11 6C 3C FC 5F 53 6C 49 A9 F3 42 E0 "+ "E1 32 EE AE 2F 21 79 06 C0 6E EE 69 1B B0 10 B7 54 53 FA 31 EB 92 D1 51 "+ "0D 90 E3 FC E2 F6 1C 1E 15 68 0D A5 AB CA 5B E8 45 23 8D 87 7C 5F 7B F5 "+ "A1 D8 89 ED 30", "5C AB 2E 55 2C 1D BD F1 9C F9 F6 B9 28 73 5B EC 11 2A 2B "+ "FC E5 C8 C6 86 00 00 00 23 00 78 71 11 59 D0 0C 8B 7B 45 A2 1F 02 62 5D "+ "F3 18 F8 F2 46 A5 14 99 60 77 55 25 2C 3D AF 19 C9 CC C1 C8 9B EA 39 A3 "+ "32 7C 45 19 87 B1 8A 98 CA D7 E5 90 A7 3D 70 BE 74 36 E3 09 C5 F9 00 57 "+ "82 AF 64 B9 7D", "E4 A9 1F F1 5A AB BF 2F E8 3D C5 AA 70 BF A4 48 EE 32 88 "+ "4B 5A 0A B2 E7 00 00 00 23 00 78 71 11 8A B1 B3 1F D0 40 33 D8 0A 9C 21 "+ "5C CB 47 63 69 2C EC D4 46 92 C7 07 1D EF B5 6D 28 89 68 36 BA E1 7D A4 "+ "60 03 5A 2C 0D 53 EF 43 2D BA 09 30 CD F7 4A 8C 70 18 ED 57 EA C9 63 E6 "+ "43 B5 6C 97 94", "FD A8 CA 31 D7 41 EA 1D 62 47 71 A8 C9 2F D8 3E 3C 3A F1 "+ "D2 60 41 8F 2A 00 00 00 23 00 78 71 11 45 0D B9 4F AF A1 4D 0C 9B 62 FE "+ "B9 7C 3F C0 B0 B0 C2 67 44 3F 5F 2B B5 EC 8A 0D D9 D6 33 9B A0 EC 97 C2 "+ "40 FA A4 56 67 46 02 58 B1 0A AB 27 FE 25 38 23 21 74 F6 34 3C 81 D4 1A "+ "17 DB C2 A2 E9", "FB 5E 02 2A 0C A0 F0 09 7F FF 93 05 D1 3D 14 B4 14 3A DC "+ "21 A3 AB DE C6 00 00 00 23 00 78 71 11 84 21 A6 CC 84 8B 0A 07 64 2F B2 "+ "A1 05 7B 08 9A FB CE 3B B6 A1 36 A8 03 0D 7B EA 2D 1E 7A D7 E2 C1 2D E8 "+ "DF 82 CE 3F 43 D5 F6 21 DB D2 F7 31 5B A8 F2 65 E2 F4 E4 7E 1E 94 F4 E6 "+ "28 14 01 CA 18", }; final static String[] CRYPTO_GRAM = { "E6 5E D9 34 14 4D 4B 86 B5 40 FB 2A 06 29 44 2D 5F 41 14 "+ "E5 95 A3 6D 07 B0 C4 6A 14 35 8D FE 72 C6 18 37 96 15 20 4B CE E7 A9 A1 "+ "FD C6 85 3D F5 AE EA E4 92 95 0B EB 95 74 CA ED 38 E8 4B E0 FC 4C 55 1B "+ "DE DE AD B3 13 7E ED AB EC B3 C2 FC A2 BE 72 A6 BE 50 D4 79 89 D1 70 A4 "+ "4A 15 EC A0 D7", "D8 91 7C 06 60 DC 9B 74 28 2A 44 68 96 AF EE 93 AC D2 CF "+ "DB CE 19 F6 73 73 F5 61 B0 AB 20 DF 63 F3 C7 4C 47 86 BD E0 7A 9B 04 64 "+ "F9 87 2D F3 A6 FB 3F E5 B8 80 C5 F1 29 A9 0A 56 4E 7F 96 BE 30 88 FD 81 "+ "86 7D 13 56 6E 17 4B 2A 31 36 D3 DA 24 FD 66 7D 21 B2 9E C9 2D 63 46 EF "+ "97 06 E1 DA 15", "5A 4E F8 99 EE ED 02 1A A2 C8 A9 6B DD FB D6 CE 2A F0 5A "+ "05 57 6A 79 66 3C B3 B7 CA 00 98 52 EE 35 72 AE 65 17 D4 0F A7 B3 20 F5 "+ "25 A7 A5 7A 47 79 EB 65 FD DE 63 68 A5 C0 04 EF 3D DA 21 5E DB B7 83 FD "+ "EF FD 52 28 91 D3 67 F4 9E 69 57 1C 19 08 5F 67 98 86 6E 99 2F 19 A7 54 "+ "B2 CE E8 F1 C0", "AB D2 A6 ED C1 AA 2C ED 12 67 7E 38 B2 CB 5C 4E 06 A0 E0 "+ "5A FC 59 59 11 25 8B 92 07 12 81 D3 FE 7E B8 4B 35 CD F6 A2 CD 98 C7 EF "+ "FC EA 75 94 2C 55 6F 35 B5 4E 83 F8 82 7B B0 85 DD B5 8E B1 04 B2 F0 71 "+ "79 42 FA A4 81 68 64 83 FB F8 5E 75 B3 C6 C8 CA 17 9C 94 45 EC A9 8A ED "+ "73 58 F9 9B 97", "AE E7 4C D8 AA 2E EA C4 6C D9 19 48 3C 19 12 D0 EA E8 70 "+ "00 39 2F AF FD 77 36 3B 87 AF ED 11 9E 54 74 F6 4B DA 68 32 12 D7 B0 76 "+ "73 87 BE C3 74 08 0E DB 33 1E 66 AE 9E 23 56 DD DC 0D 61 FF 8B 15 4A 36 "+ "4E BD E7 9F E5 3C 15 43 4F CC B2 7F FC 4B DD D6 39 17 EB FD 3D D6 11 45 "+ "AA DD F0 2E 61", }; final static String[] RETAIL_MAC = { "27 D0 4D E8 17 20 46 E8", "C2 31 EF 5A 99 AB FA 5F", "09 6C 40 EE A6 12 FA 1C", "55 FA 62 93 86 56 D0 38", "9D 86 EB 57 A2 58 F8 C8", }; final static String[] CSK = { "54 3D 49 BF 31 51 25 94 67 8A 64 4F 1C B9 54 3D 31 46 43 79 E5 B9 A7 A7", "76 23 EC 10 91 61 7C 75 EF EF BF 9D 7F 7F 9E FD 07 1A 0E 6E 51 0B D3 D0", "76 23 EC 10 91 61 7C 75 EF EF BF 9D 7F 7F 9E FD 07 1A 0E 6E 51 0B D3 D0", "54 3D 49 BF 31 51 25 94 67 8A 64 4F 1C B9 54 3D 31 46 43 79 E5 B9 A7 A72", "10 57 9E F4 9D 34 4F B3 43 D0 62 92 45 D9 EF 45 16 2F CD 4F 4A D5 38 08" }; public TestRetailCBCMac() { super(); } public TestRetailCBCMac(String name) { super(name); } /* (non-Javadoc) * @see iaik.AbstractTest#setUp() */ public void setUp() throws Exception { super.setUp(); IAIK.addAsProvider(); } public void testRetailMac() { String cbcCipherAlg = "DES"; String cipherAlg = "DESede"; int cbcCipherKeyLen = 8; int blockSize = 8; for (int i = 0; i < PLAIN_DATA.length; i++) { byte[] plainData = Util.toByteArray(PLAIN_DATA[i].trim()); byte[] cryptoGram = Util.toByteArray(CRYPTO_GRAM[i].trim()); byte[] retailMac = Util.toByteArray(RETAIL_MAC[i].trim()); byte[] rawCsk = Util.toByteArray(CSK[i].trim()); byte[] calculatedMac = null; try { SecretKeySpec csk = new SecretKeySpec(rawCsk, cipherAlg); calculatedMac = retailMac(cryptoGram, cbcCipherAlg, cipherAlg, csk, cbcCipherKeyLen, blockSize); System.out.println("Expected Mac : " + Util.toString(retailMac)); System.out.println("Calculated Mac: " + Util.toString(calculatedMac)); } catch (Exception e) { e.printStackTrace(); fail("Unexpetced error: " + e.toString()); } assertTrue("Different Mac values!", Arrays.equals(retailMac, calculatedMac)); } } // public void testRetailMacDESTripleDES() { // testRetailMac("DES", "DESede", 8, 8); // } public void testRetailMac(String cbcCipherAlg, String cipherAlg, int cbcCipherKeyLen, int blockSize) { try { Random rand = new Random(); KeyGenerator kg = KeyGenerator.getInstance(cipherAlg, "IAIK"); SecretKey key = kg.generateKey(); int[] dataLen = { 0, 3, 8, 15, 16, 20, 24, 31, 32, 39, 40, 48, 510, 512, 1111, 1024, 2000, 2048, 4003, 4096 }; for (int i = 0; i < dataLen.length; i++) { int len = dataLen[i]; byte[] data = new byte[len]; rand.nextBytes(data); System.out.println("\n Data (" + len + " bytes):" + Util.toString(data)); byte[] mac = retailMac(data, cbcCipherAlg, "DESede", key, cbcCipherKeyLen, blockSize); System.out.println("MAC: " + Util.toString(mac)); } } catch (Exception e) { fail("Unexpetced error: " + e.toString()); } } /** * Calculates a Retail CBC Mac from the given message. *
* The retail CBC Mac is calculated according to the following * algorithm: *
cbcCipherKeyLen
* bytes of the csk
key and use it to calculate a
* CBC Mac value from the first n-1 blocks of the padded message.
* For CBC Mac calculation initialize the CBC Cipher with an
* IV of all zero bytes.
* off
* @param key the Cipher key
* @param cipherAlg the name of the CBC Cipher algorithm to be used
* @param blockSize the block size of the CBC Cipher
*
* @return the CBC Mac value
*
* @throws NoSuchAlgorithmException if the requested Cipher algorithm
* is not available
* @throws NoSuchProviderException if the IAIK provider is not installed
* @throws InvalidKeyException if the key cannot be used with the Ciphers
* @throws GeneralSecurityException if the Cipher operation fails
*/
static byte[] cbcMac(byte[] paddedMsg,
int off,
int len,
SecretKey key,
String cipherAlg,
int blockSize)
throws NoSuchAlgorithmException,
NoSuchProviderException,
InvalidKeyException,
GeneralSecurityException {
if (paddedMsg == null) {
throw new NullPointerException("Message must not be null!");
}
if (key == null) {
throw new NullPointerException("Key csk must not be null!");
}
Cipher cbcCipher = Cipher.getInstance(cipherAlg+"/CBC/NoPadding", "IAIK");
byte[] iv = new byte[blockSize];
cbcCipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(iv));
int finOff = off;
if (len > blockSize) {
finOff = len - blockSize;
cbcCipher.update(paddedMsg, 0, finOff);
}
byte[] mac = cbcCipher.doFinal(paddedMsg, finOff, blockSize);
return mac;
}
/**
* Pads the given message to a multiple of the given blocksize with
* a leading one bit followed by as many zero bits as necessary
*
* @param msg the message to be padded
* @param blockSize the block size
*
* @return the padded message
*/
static byte[] pad(byte[] msg, int blockSize) {
int paddingLen;
byte[] paddedMsg;
int msgLen = msg.length;
if (msgLen == 0) {
paddingLen = blockSize;
} else {
paddingLen = blockSize - msgLen % blockSize;
}
if (paddingLen > 0) {
paddedMsg = new byte[msgLen + paddingLen];
System.arraycopy(msg, 0, paddedMsg, 0, msgLen);
paddedMsg[msgLen] = (byte)0x80;
} else {
paddedMsg = msg;
}
return paddedMsg;
}
}