Example usage for org.bouncycastle.util.encoders Hex decode

Introduction

In this page you can find the example usage for org.bouncycastle.util.encoders Hex decode.

Prototype

public static byte[] decode(String data) 

Source Link

Document

decode the Hex encoded String data - whitespace will be ignored.

Usage

From source file:ECIESTest.java

public TestResult perform() {
    SecureRandom random = new SecureRandom();
    ECCurve.Fp curve = new ECCurve.Fp(
            new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
            new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
            new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b

    ECDomainParameters params = new ECDomainParameters(curve,
            curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
            new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n

    ECKeyPairGenerator pGen = new ECKeyPairGenerator();
    ECKeyGenerationParameters genParam = new ECKeyGenerationParameters(params, random);

    pGen.init(genParam);//from w  w w  .  j  a va2s  .co  m

    AsymmetricCipherKeyPair p1 = pGen.generateKeyPair();
    AsymmetricCipherKeyPair p2 = pGen.generateKeyPair();

    //
    // stream test
    //
    IESEngine i1 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()),
            new HMac(new SHA1Digest()));
    IESEngine i2 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()),
            new HMac(new SHA1Digest()));
    byte[] d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
    byte[] e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };
    IESParameters p = new IESParameters(d, e, 64);

    i1.init(true, p1.getPrivate(), p2.getPublic(), p);
    i2.init(false, p2.getPrivate(), p1.getPublic(), p);

    byte[] message = Hex.decode("1234567890abcdef");

    try {
        byte[] out1 = i1.processBlock(message, 0, message.length);

        byte[] out2 = i2.processBlock(out1, 0, out1.length);

        if (!sameAs(out2, message)) {
            return new SimpleTestResult(false, this.getName() + ": stream cipher test failed");
        }

    } catch (Exception ex) {
        return new SimpleTestResult(false, this.getName() + ": stream cipher test exception " + ex.toString());
    }

    //
    // twofish with IV0 test
    //
    BufferedBlockCipher c1 = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine()));
    BufferedBlockCipher c2 = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine()));
    i1 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()),
            new HMac(new SHA1Digest()), c1);
    i2 = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()),
            new HMac(new SHA1Digest()), c2);
    d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
    e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 };
    p = new IESWithCipherParameters(d, e, 64, 128);

    i1.init(true, p1.getPrivate(), p2.getPublic(), p);
    i2.init(false, p2.getPrivate(), p1.getPublic(), p);

    message = Hex.decode("1234567890abcdef");

    try {
        byte[] out1 = i1.processBlock(message, 0, message.length);

        byte[] out2 = i2.processBlock(out1, 0, out1.length);

        if (!sameAs(out2, message)) {
            return new SimpleTestResult(false, this.getName() + ": twofish cipher test failed");
        }
    } catch (Exception ex) {
        return new SimpleTestResult(false, this.getName() + ": twofish cipher test exception " + ex.toString());
    }

    return new SimpleTestResult(true, this.getName() + ": Okay");
}

---

From source file:SampleUser.java

License:Open Source License

/**
 * Restore the state of this user from the key value store (if found).  If not found, do nothing.
 *//*ww  w.  j  av  a 2  s. com*/
SampleUser restoreState() {
    String memberStr = keyValStore.getValue(keyValStoreName);
    if (null != memberStr) {
        // The user was found in the key value store, so restore the
        // state.
        byte[] serialized = Hex.decode(memberStr);
        ByteArrayInputStream bis = new ByteArrayInputStream(serialized);
        try {
            ObjectInputStream ois = new ObjectInputStream(bis);
            SampleUser state = (SampleUser) ois.readObject();
            if (state != null) {
                this.name = state.name;
                this.roles = state.roles;
                this.account = state.account;
                this.affiliation = state.affiliation;
                this.organization = state.organization;
                this.enrollmentSecret = state.enrollmentSecret;
                this.enrollment = state.enrollment;
                this.mspId = state.mspId;
                return this;
            }
        } catch (Exception e) {
            throw new RuntimeException(String.format("Could not restore state of member %s", this.name), e);
        }
    }
    return null;
}

---

From source file:alexkantas.cryptography.algorithms.AES.java

License:Apache License

/**
 * Sets a new 256-bit AES key//w ww.  java  2  s  .co  m
 *
 * @param keyString Key in HEX String
 */
public void setkey(String keyString) {
    byte[] keyBytes = Hex.decode(keyString.getBytes());
    SecretKey AES_key = new SecretKeySpec(keyBytes, "AES");
    this.AES_key = AES_key;
}

---

From source file:be.fedict.eid.applet.service.impl.handler.AuthenticationDataMessageHandler.java

License:Open Source License

private void checkSessionIdChannelBinding(AuthenticationDataMessage message, HttpServletRequest request) {
    LOG.debug("using TLS session Id channel binding");
    byte[] sessionId = message.sessionId;
    /*// www.j  a  v  a  2s. co  m
     * Next is Tomcat specific.
     */
    String actualSessionId = (String) request.getAttribute("javax.servlet.request.ssl_session");
    if (null == actualSessionId) {
        /*
         * Servlet specs v3.0
         */
        actualSessionId = (String) request.getAttribute("javax.servlet.request.ssl_session_id");
    }
    if (null == actualSessionId) {
        LOG.warn("could not verify the SSL session identifier");
        return;
    }
    if (false == Arrays.equals(sessionId, Hex.decode(actualSessionId))) {
        LOG.warn("SSL session Id mismatch");
        LOG.debug("signed SSL session Id: " + new String(Hex.encode(sessionId)));
        LOG.debug("actual SSL session Id: " + actualSessionId);
        throw new SecurityException("SSL session Id mismatch");
    }
    LOG.debug("SSL session identifier checked");
}

---

From source file:bisq.common.crypto.Encryption.java

License:Open Source License

public static byte[] decryptPayloadWithHmac(byte[] encryptedPayloadWithHmac, SecretKey secretKey)
        throws CryptoException {
    byte[] payloadWithHmac = decrypt(encryptedPayloadWithHmac, secretKey);
    String payloadWithHmacAsHex = Hex.toHexString(payloadWithHmac);
    // first part is raw message
    int length = payloadWithHmacAsHex.length();
    int sep = length - 64;
    String payloadAsHex = payloadWithHmacAsHex.substring(0, sep);
    // last 64 bytes is hmac
    String hmacAsHex = payloadWithHmacAsHex.substring(sep, length);
    if (verifyHmac(Hex.decode(payloadAsHex), Hex.decode(hmacAsHex), secretKey)) {
        return Hex.decode(payloadAsHex);
    } else {//from  w  ww  .j a  v a  2 s .  c o m
        throw new CryptoException("Hmac does not match.");
    }
}

---

From source file:br.com.hackathon.rest.criptografia.Encriptor.java

public byte[] decrypt(String str) throws NoSuchAlgorithmException, NoSuchPaddingException {
    byte[] senhaPlana = null;
    try {//www.  j ava2  s  . c  o m
        byte[] bufferSenha = Hex.decode(str);
        cipher = Cipher.getInstance("AES");
        secretKeySpec = new SecretKeySpec(getKey(), "AES");
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
        senhaPlana = cipher.doFinal(bufferSenha);
    } catch (UnsupportedEncodingException | NoSuchAlgorithmException | InvalidKeyException
            | IllegalBlockSizeException | BadPaddingException | StringIndexOutOfBoundsException ex) {
    }
    return senhaPlana;
}

---

From source file:ca.trustpoint.m2m.AuthorityKeyIdentifierTest.java

License:Apache License

/**
 * Test method for/*from   w  w w . ja  v  a  2s  .c om*/
 * {@link ca.trustpoint.m2m.AuthorityKeyIdentifier#AuthorityKeyIdentifier(byte[],
 * ca.trustpoint.m2m.GeneralName, java.math.BigInteger)}.
 */
@Test
public void testAuthorityKeyIdentifierByteArrayGeneralNameBigInteger() {
    byte[] keyId = Hex.decode("3f2a7529ba22");
    GeneralName certIssuer = new GeneralName();
    BigInteger certSerialNumber = new BigInteger("2836741231236324239234726261890882");

    testConstructor(keyId, null, null);
    testConstructor(null, certIssuer, null);
    testConstructor(null, null, certSerialNumber);
    testConstructor(keyId, certIssuer, null);
    testConstructor(keyId, null, certSerialNumber);
    testConstructor(null, certIssuer, certSerialNumber);
    testConstructor(keyId, certIssuer, certSerialNumber);
}

---

From source file:ca.trustpoint.m2m.AuthorityKeyIdentifierTest.java

License:Apache License

/**
 * Test method for {@link ca.trustpoint.m2m.AuthorityKeyIdentifier#setKeyIdentifier(byte[])}.
 *///from   ww w.  ja va2  s.  co  m
@Test
public void testSetKeyIdentifier() {
    AuthorityKeyIdentifier authKeyId = new AuthorityKeyIdentifier();
    assertNull(authKeyId.getKeyIdentifier());

    byte[] expectedValue = Hex.decode("02ac6e4a2285");
    authKeyId.setKeyIdentifier(expectedValue);
    assertArrayEquals(expectedValue, authKeyId.getKeyIdentifier());

    expectedValue = Hex.decode("99fe72ad72");
    authKeyId.setKeyIdentifier(expectedValue);
    assertArrayEquals(expectedValue, authKeyId.getKeyIdentifier());
}

---

From source file:ca.trustpoint.m2m.AuthorityKeyIdentifierTest.java

License:Apache License

/**
 * Test method for {@link ca.trustpoint.m2m.AuthorityKeyIdentifier#isValid()}.
 */// w  w w.  j  a va2  s. c om
@Test
public void testIsValid() {
    AuthorityKeyIdentifier authKeyId = new AuthorityKeyIdentifier();
    assertFalse(authKeyId.isValid());

    authKeyId.setKeyIdentifier(new byte[0]);
    assertFalse(authKeyId.isValid());

    authKeyId.setKeyIdentifier(Hex.decode("2347234aade22aec"));
    assertTrue(authKeyId.isValid());

    authKeyId.setCertificateIssuer(new GeneralName());
    assertFalse(authKeyId.isValid());

    EntityName entityName = new EntityName();
    entityName.addAttribute(new EntityNameAttribute(EntityNameAttributeId.Country, "CA"));
    GeneralName validName = new GeneralName(entityName);

    authKeyId.setCertificateIssuer(validName);
    assertTrue(authKeyId.isValid());

    authKeyId.setCertificateSerialNumber(new BigInteger(new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15 }));
    assertFalse(authKeyId.isValid());

    authKeyId.setCertificateSerialNumber(new BigInteger("1231296712907230496192873916192874"));
    assertTrue(authKeyId.isValid());
}

---

From source file:ca.trustpoint.m2m.AuthorityKeyIdentifierTest.java

License:Apache License

/**
 * Test method for {@link ca.trustpoint.m2m.AuthorityKeyIdentifier#getEncoded()}.
 *///from  w  w w .  j av  a2 s.c o  m
@Test
public void testGetEncoded() throws IOException {
    boolean exceptionThrown = false;
    AuthorityKeyIdentifier authKeyId = new AuthorityKeyIdentifier();

    try {
        authKeyId.getEncoded();
    } catch (IOException ex) {
        exceptionThrown = true;
    }

    assertTrue(exceptionThrown);

    byte[] expectedEncoding = new byte[] { 0x30, 0x08, (byte) 0x80, 0x06, 0x73, 0x68, (byte) 0xA3, (byte) 0xDC,
            0x6E, 0x4F };
    authKeyId.setKeyIdentifier(Hex.decode("7368a3dc6e4f"));
    assertArrayEquals(expectedEncoding, authKeyId.getEncoded());

    expectedEncoding = new byte[] { 0x30, 0x16, (byte) 0x80, 0x06, 0x73, 0x68, (byte) 0xA3, (byte) 0xDC, 0x6E,
            0x4F, (byte) 0xA1, 0x0C, (byte) 0x81, 0x0A, 0x74, 0x65, 0x73, 0x74, 0x64, 0x6F, 0x6D, 0x61, 0x69,
            0x6E };
    authKeyId.setCertificateIssuer(new GeneralName(GeneralNameAttributeId.DnsName, "testdomain"));
    assertArrayEquals(expectedEncoding, authKeyId.getEncoded());

    EntityName entityName = new EntityName();
    entityName.addAttribute(new EntityNameAttribute(EntityNameAttributeId.Country, "CA"));
    GeneralName validName = new GeneralName(entityName);

    expectedEncoding = new byte[] { 0x30, 0x10, (byte) 0x80, 0x06, 0x73, 0x68, (byte) 0xA3, (byte) 0xDC, 0x6E,
            0x4F, (byte) 0xA1, 0x06, (byte) 0xA2, 0x04, (byte) 0x80, 0x02, 0x43, 0x41 };
    authKeyId.setCertificateIssuer(validName);
    assertArrayEquals(expectedEncoding, authKeyId.getEncoded());

    expectedEncoding = new byte[] { 0x30, 0x20, (byte) 0x80, 0x06, 0x73, 0x68, (byte) 0xA3, (byte) 0xDC, 0x6E,
            0x4F, (byte) 0xA1, 0x06, (byte) 0xA2, 0x04, (byte) 0x80, 0x02, 0x43, 0x41, (byte) 0x82, 0x0E, 0x3C,
            (byte) 0xB5, 0x26, 0x41, 0x37, (byte) 0x95, (byte) 0xFC, (byte) 0xD3, (byte) 0xEA, (byte) 0xFC,
            0x22, (byte) 0x92, (byte) 0xD8, 0x6A };
    authKeyId.setCertificateSerialNumber(new BigInteger("1231296712907230496192873916192874"));
    assertArrayEquals(expectedEncoding, authKeyId.getEncoded());
}

---

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