diff options
Diffstat (limited to 'bcprov/src/main/java/org/bouncycastle/crypto/test/NaccacheSternTest.java')
| -rw-r--r-- | bcprov/src/main/java/org/bouncycastle/crypto/test/NaccacheSternTest.java | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/crypto/test/NaccacheSternTest.java b/bcprov/src/main/java/org/bouncycastle/crypto/test/NaccacheSternTest.java deleted file mode 100644 index 9055855..0000000 --- a/bcprov/src/main/java/org/bouncycastle/crypto/test/NaccacheSternTest.java +++ /dev/null @@ -1,354 +0,0 @@ -package org.bouncycastle.crypto.test; - -import java.math.BigInteger; -import java.security.SecureRandom; -import java.util.Vector; - -import org.bouncycastle.crypto.AsymmetricCipherKeyPair; -import org.bouncycastle.crypto.InvalidCipherTextException; -import org.bouncycastle.crypto.engines.NaccacheSternEngine; -import org.bouncycastle.crypto.generators.NaccacheSternKeyPairGenerator; -import org.bouncycastle.crypto.params.NaccacheSternKeyGenerationParameters; -import org.bouncycastle.crypto.params.NaccacheSternKeyParameters; -import org.bouncycastle.crypto.params.NaccacheSternPrivateKeyParameters; -import org.bouncycastle.util.encoders.Hex; -import org.bouncycastle.util.test.SimpleTest; - -/** - * Test case for NaccacheStern cipher. For details on this cipher, please see - * - * http://www.gemplus.com/smart/rd/publications/pdf/NS98pkcs.pdf - * - * Performs the following tests: - * <ul> - * <li> Toy example from the NaccacheSternPaper </li> - * <li> 768 bit test with text "Now is the time for all good men." (ripped from RSA test) and - * the same test with the first byte replaced by 0xFF </li> - * <li> 1024 bit test analog to 768 bit test </li> - * </ul> - */ -public class NaccacheSternTest - extends SimpleTest -{ - static final boolean debug = false; - - static final NaccacheSternEngine cryptEng = new NaccacheSternEngine(); - - static final NaccacheSternEngine decryptEng = new NaccacheSternEngine(); - - static - { - cryptEng.setDebug(debug); - decryptEng.setDebug(debug); - } - - // Values from NaccacheStern paper - static final BigInteger a = BigInteger.valueOf(101); - - static final BigInteger u1 = BigInteger.valueOf(3); - - static final BigInteger u2 = BigInteger.valueOf(5); - - static final BigInteger u3 = BigInteger.valueOf(7); - - static final BigInteger b = BigInteger.valueOf(191); - - static final BigInteger v1 = BigInteger.valueOf(11); - - static final BigInteger v2 = BigInteger.valueOf(13); - - static final BigInteger v3 = BigInteger.valueOf(17); - - static final BigInteger ONE = BigInteger.valueOf(1); - - static final BigInteger TWO = BigInteger.valueOf(2); - - static final BigInteger sigma = u1.multiply(u2).multiply(u3).multiply(v1) - .multiply(v2).multiply(v3); - - static final BigInteger p = TWO.multiply(a).multiply(u1).multiply(u2) - .multiply(u3).add(ONE); - - static final BigInteger q = TWO.multiply(b).multiply(v1).multiply(v2) - .multiply(v3).add(ONE); - - static final BigInteger n = p.multiply(q); - - static final BigInteger phi_n = p.subtract(ONE).multiply(q.subtract(ONE)); - - static final BigInteger g = BigInteger.valueOf(131); - - static final Vector smallPrimes = new Vector(); - - // static final BigInteger paperTest = BigInteger.valueOf(202); - - static final String input = "4e6f77206973207468652074696d6520666f7220616c6c20676f6f64206d656e"; - - static final BigInteger paperTest = BigInteger.valueOf(202); - - // - // to check that we handling byte extension by big number correctly. - // - static final String edgeInput = "ff6f77206973207468652074696d6520666f7220616c6c20676f6f64206d656e"; - - public String getName() - { - return "NaccacheStern"; - } - - public void performTest() - { - // Test with given key from NaccacheSternPaper (totally insecure) - - // First the Parameters from the NaccacheStern Paper - // (see http://www.gemplus.com/smart/rd/publications/pdf/NS98pkcs.pdf ) - - smallPrimes.addElement(u1); - smallPrimes.addElement(u2); - smallPrimes.addElement(u3); - smallPrimes.addElement(v1); - smallPrimes.addElement(v2); - smallPrimes.addElement(v3); - - NaccacheSternKeyParameters pubParameters = new NaccacheSternKeyParameters(false, g, n, sigma.bitLength()); - - NaccacheSternPrivateKeyParameters privParameters = new NaccacheSternPrivateKeyParameters(g, n, sigma.bitLength(), smallPrimes, phi_n); - - AsymmetricCipherKeyPair pair = new AsymmetricCipherKeyPair(pubParameters, privParameters); - - // Initialize Engines with KeyPair - - if (debug) - { - System.out.println("initializing encryption engine"); - } - cryptEng.init(true, pair.getPublic()); - - if (debug) - { - System.out.println("initializing decryption engine"); - } - decryptEng.init(false, pair.getPrivate()); - - byte[] data = paperTest.toByteArray(); - - if (!new BigInteger(data).equals(new BigInteger(enDeCrypt(data)))) - { - fail("failed NaccacheStern paper test"); - } - - // - // key generation test - // - - // - // 768 Bit test - // - - if (debug) - { - System.out.println(); - System.out.println("768 Bit TEST"); - } - - // specify key generation parameters - NaccacheSternKeyGenerationParameters genParam - = new NaccacheSternKeyGenerationParameters(new SecureRandom(), 768, 8, 30, debug); - - // Initialize Key generator and generate key pair - NaccacheSternKeyPairGenerator pGen = new NaccacheSternKeyPairGenerator(); - pGen.init(genParam); - - pair = pGen.generateKeyPair(); - - if (((NaccacheSternKeyParameters)pair.getPublic()).getModulus().bitLength() < 768) - { - System.out.println("FAILED: key size is <786 bit, exactly " - + ((NaccacheSternKeyParameters)pair.getPublic()).getModulus().bitLength() + " bit"); - fail("failed key generation (768) length test"); - } - - // Initialize Engines with KeyPair - - if (debug) - { - System.out.println("initializing " + genParam.getStrength() + " bit encryption engine"); - } - cryptEng.init(true, pair.getPublic()); - - if (debug) - { - System.out.println("initializing " + genParam.getStrength() + " bit decryption engine"); - } - decryptEng.init(false, pair.getPrivate()); - - // Basic data input - data = Hex.decode(input); - - if (!new BigInteger(1, data).equals(new BigInteger(1, enDeCrypt(data)))) - { - fail("failed encryption decryption (" + genParam.getStrength() + ") basic test"); - } - - // Data starting with FF byte (would be interpreted as negative - // BigInteger) - - data = Hex.decode(edgeInput); - - if (!new BigInteger(1, data).equals(new BigInteger(1, enDeCrypt(data)))) - { - fail("failed encryption decryption (" + genParam.getStrength() + ") edgeInput test"); - } - - // - // 1024 Bit Test - // -/* - if (debug) - { - System.out.println(); - System.out.println("1024 Bit TEST"); - } - - // specify key generation parameters - genParam = new NaccacheSternKeyGenerationParameters(new SecureRandom(), 1024, 8, 40); - - pGen.init(genParam); - pair = pGen.generateKeyPair(); - - if (((NaccacheSternKeyParameters)pair.getPublic()).getModulus().bitLength() < 1024) - { - if (debug) - { - System.out.println("FAILED: key size is <1024 bit, exactly " - + ((NaccacheSternKeyParameters)pair.getPublic()).getModulus().bitLength() + " bit"); - } - fail("failed key generation (1024) length test"); - } - - // Initialize Engines with KeyPair - - if (debug) - { - System.out.println("initializing " + genParam.getStrength() + " bit encryption engine"); - } - cryptEng.init(true, pair.getPublic()); - - if (debug) - { - System.out.println("initializing " + genParam.getStrength() + " bit decryption engine"); - } - decryptEng.init(false, pair.getPrivate()); - - if (debug) - { - System.out.println("Data is " + new BigInteger(1, data)); - } - - // Basic data input - data = Hex.decode(input); - - if (!new BigInteger(1, data).equals(new BigInteger(1, enDeCrypt(data)))) - { - fail("failed encryption decryption (" + genParam.getStrength() + ") basic test"); - } - - // Data starting with FF byte (would be interpreted as negative - // BigInteger) - - data = Hex.decode(edgeInput); - - if (!new BigInteger(1, data).equals(new BigInteger(1, enDeCrypt(data)))) - { - fail("failed encryption decryption (" + genParam.getStrength() + ") edgeInput test"); - } -*/ - // END OF TEST CASE - - try - { - new NaccacheSternEngine().processBlock(new byte[]{ 1 }, 0, 1); - fail("failed initialisation check"); - } - catch (IllegalStateException e) - { - // expected - } - catch (InvalidCipherTextException e) - { - fail("failed initialisation check"); - } - - if (debug) - { - System.out.println("All tests successful"); - } - } - - private byte[] enDeCrypt(byte[] input) - { - - // create work array - byte[] data = new byte[input.length]; - System.arraycopy(input, 0, data, 0, data.length); - - // Perform encryption like in the paper from Naccache-Stern - if (debug) - { - System.out.println("encrypting data. Data representation\n" - // + "As String:.... " + new String(data) + "\n" - + "As BigInteger: " + new BigInteger(1, data)); - System.out.println("data length is " + data.length); - } - - try - { - data = cryptEng.processData(data); - } - catch (InvalidCipherTextException e) - { - if (debug) - { - System.out.println("failed - exception " + e.toString() + "\n" + e.getMessage()); - } - fail("failed - exception " + e.toString() + "\n" + e.getMessage()); - } - - if (debug) - { - System.out.println("enrypted data representation\n" - // + "As String:.... " + new String(data) + "\n" - + "As BigInteger: " + new BigInteger(1, data)); - System.out.println("data length is " + data.length); - } - - try - { - data = decryptEng.processData(data); - } - catch (InvalidCipherTextException e) - { - if (debug) - { - System.out.println("failed - exception " + e.toString() + "\n" + e.getMessage()); - } - fail("failed - exception " + e.toString() + "\n" + e.getMessage()); - } - - if (debug) - { - System.out.println("decrypted data representation\n" - // + "As String:.... " + new String(data) + "\n" - + "As BigInteger: " + new BigInteger(1, data)); - System.out.println("data length is " + data.length); - } - - return data; - - } - - public static void main(String[] args) - { - runTest(new NaccacheSternTest()); - } -} |