Example usage for java.security.interfaces RSAPublicKey getPublicExponent

Introduction

In this page you can find the example usage for java.security.interfaces RSAPublicKey getPublicExponent.

Prototype

public BigInteger getPublicExponent();

Source Link

Document

Returns the public exponent.

Usage

From source file:test.integ.be.fedict.commons.eid.client.JCATest.java

@Test
public void testPSSPrefix() throws Exception {
    Security.addProvider(new BeIDProvider());
    Security.addProvider(new BouncyCastleProvider());
    KeyStore keyStore = KeyStore.getInstance("BeID");
    keyStore.load(null);/*from  www . jav a  2 s  . c om*/
    PrivateKey authnPrivateKey = (PrivateKey) keyStore.getKey("Authentication", null);
    X509Certificate authnCertificate = (X509Certificate) keyStore.getCertificate("Authentication");
    PublicKey authnPublicKey = authnCertificate.getPublicKey();

    Signature signature = Signature.getInstance("SHA1withRSAandMGF1");
    signature.initSign(authnPrivateKey);

    byte[] toBeSigned = "hello world".getBytes();
    signature.update(toBeSigned);
    byte[] signatureValue = signature.sign();

    signature.initVerify(authnPublicKey);
    signature.update(toBeSigned);
    boolean result = signature.verify(signatureValue);
    assertTrue(result);

    RSAPublicKey rsaPublicKey = (RSAPublicKey) authnPublicKey;
    BigInteger signatureValueBigInteger = new BigInteger(signatureValue);
    BigInteger messageBigInteger = signatureValueBigInteger.modPow(rsaPublicKey.getPublicExponent(),
            rsaPublicKey.getModulus());
    String paddedMessage = new String(Hex.encodeHex(messageBigInteger.toByteArray()));
    LOG.debug("padded message: " + paddedMessage);
    assertTrue(paddedMessage.endsWith("bc"));
}

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From source file:net.sf.keystore_explorer.crypto.csr.spkac.Spkac.java

private byte[] encodeRsaPublicKeyAsBitString(RSAPublicKey rsaPublicKey) throws SpkacException {
    try {//from  w w  w.j  a  va 2  s.  c o  m
        ASN1EncodableVector vec = new ASN1EncodableVector();
        vec.add(new ASN1Integer(rsaPublicKey.getModulus()));
        vec.add(new ASN1Integer(rsaPublicKey.getPublicExponent()));
        DERSequence derSequence = new DERSequence(vec);
        return derSequence.getEncoded(ASN1Encoding.DER);
    } catch (Exception ex) {
        throw new SpkacException(res.getString("NoEncodeRsaPublicKey.exception.message"), ex);
    }
}

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From source file:com.kuzumeji.platform.standard.SecurityService.java

/**
 * RSA???// ww  w  . j  a  v a2 s  .com
 * <dl>
 * <dt>?
 * <dd>RSA????
 * </dl>
 * @param key RSA?
 * @return RSA?
 */
public File savePublicKeyFile(final RSAPublicKey key) {
    try {
        final File file = File.createTempFile("public", ".key");
        try (FileOutputStream fos = new FileOutputStream(file);
                DataOutputStream dos = new DataOutputStream(fos)) {
            final byte[] modulus = key.getModulus().toByteArray();
            dos.writeInt(modulus.length);
            dos.write(modulus);
            final byte[] publicExponent = key.getPublicExponent().toByteArray();
            dos.writeInt(publicExponent.length);
            dos.write(publicExponent);
        }
        return file;
    } catch (final IOException e) {
        throw new RuntimeException(e);
    }
}

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From source file:org.dasein.cloud.test.identity.IdentityResources.java

/**
 * @link http://stackoverflow.com/a/14582408/211197
 * @return Encoded generated public key/*from  w ww. j ava2s  . co  m*/
 */
private @Nullable String generateKey() {
    KeyPairGenerator generator;
    try {
        generator = KeyPairGenerator.getInstance("RSA");
        generator.initialize(2048);
        KeyPair keyPair = generator.genKeyPair();
        RSAPublicKey rsaPublicKey = (RSAPublicKey) keyPair.getPublic();
        ByteArrayOutputStream byteOs = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(byteOs);
        dos.writeInt("ssh-rsa".getBytes().length);
        dos.write("ssh-rsa".getBytes());
        dos.writeInt(rsaPublicKey.getPublicExponent().toByteArray().length);
        dos.write(rsaPublicKey.getPublicExponent().toByteArray());
        dos.writeInt(rsaPublicKey.getModulus().toByteArray().length);
        dos.write(rsaPublicKey.getModulus().toByteArray());
        String publicKeyEncoded = new String(Base64.encodeBase64(byteOs.toByteArray()));
        return "ssh-rsa " + publicKeyEncoded + " dasein";
    } catch (Throwable e) {
        return null;
    }
}

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From source file:qauth.djd.qauthclient.main.ContentFragment.java

@Override
public void onMessageReceived(MessageEvent messageEvent) {
    Log.i("qAuthWear", "on message received23123123!!!!!");

    if (messageEvent.getPath().equals("REGISTER")) {
        //Log.i("test", "device id:" + messageEvent.getData().toString());

        watch = null;//from  w ww  . j  ava2 s .  c om
        ByteArrayInputStream bis = new ByteArrayInputStream(messageEvent.getData());
        ObjectInput in = null;
        try {
            in = new ObjectInputStream(bis);
        } catch (Exception e) {
            Log.i("exception1", "e: " + e);
        }
        try {
            watch = (Watch) in.readObject();
        } catch (Exception e) {
            Log.i("exception2", "e: " + e);
        }

        if (watch != null) {
            Log.i("WATCH SERIALIZABLE", "deviceId:" + watch.deviceId + " model:" + watch.model);
            getActivity().runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    if (!wDataset.contains(watch)) {
                        wDataset.add(watch);
                        wAdapter.notifyDataSetChanged();
                    }
                }
            });

            RSAPrivateKey rsaPrivKey = null;
            RSAPublicKey rsaPubKey = null;

            try {
                rsaPrivKey = (RSAPrivateKey) Authenticate.getPrivKeyFromString(watch.privKey);
                rsaPubKey = (RSAPublicKey) Authenticate.getPubKeyFromString(watch.pubKey);
            } catch (Exception e) {
            }

            String N = rsaPubKey.getModulus().toString(10); //N
            int E = rsaPubKey.getPublicExponent().intValue(); //E

            for (String nodeId : getNodes()) {

                SharedPreferences prefs = getActivity().getSharedPreferences("qauth.djd.qauthclient",
                        Context.MODE_PRIVATE);
                String email = prefs.getString("email", "email");
                String password = prefs.getString("password", "password");
                new RegisterBluetooth(email, password, watch.deviceId, N, E, nodeId).execute();

            }

        } else {
            Log.i("WATCH SERIALIZABLE", "watch = null");
        }

    }

}

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From source file:com.xinferin.licensing.LicenceGenerator.java

/**
 * Gets an RSA Public key as an xml document
 * //from  w  ww  .  j  ava  2s .  c o  m
 * @param key
 * @return
 * @throws ParserConfigurationException
 * @throws UnsupportedEncodingException
 */
private Document getRSAPublicKeyAsXML(RSAPublicKey key)
        throws ParserConfigurationException, UnsupportedEncodingException {

    Document result = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
    Element rsaKeyValue = result.createElement("RSAKeyValue");
    result.appendChild(rsaKeyValue);

    Element modulus = result.createElement("Modulus");
    rsaKeyValue.appendChild(modulus);

    byte[] modulusBytes = key.getModulus().toByteArray();
    modulusBytes = stripLeadingZeros(modulusBytes);
    modulus.appendChild(result.createTextNode(new String(Base64.encodeBase64(modulusBytes))));

    Element exponent = result.createElement("Exponent");
    rsaKeyValue.appendChild(exponent);

    byte[] exponentBytes = key.getPublicExponent().toByteArray();
    exponent.appendChild(result.createTextNode(new String(Base64.encodeBase64(exponentBytes))));

    return result;
}

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From source file:com.qut.middleware.crypto.impl.CryptoProcessorImpl.java

public KeyDescriptor createSigningKeyDescriptor(RSAPublicKey pubKey, String keyPairName, String issuerDN,
        String serialNumber) {//from www.  j a v  a  2  s  .c om
    KeyDescriptor keyDescriptor = new KeyDescriptor();
    keyDescriptor.setUse(KeyTypes.SIGNING);
    KeyInfo keyInfo = new KeyInfo();
    KeyName keyName = new KeyName(keyPairName);
    keyInfo.getContent().add(keyName);

    KeyValue keyValue = new KeyValue();
    RSAKeyValue rsaKeyValue = new RSAKeyValue();
    rsaKeyValue.setExponent(pubKey.getPublicExponent().toByteArray());
    rsaKeyValue.setModulus(pubKey.getModulus().toByteArray());
    keyValue.getContent().add(rsaKeyValue);
    keyInfo.getContent().add(keyValue);
    keyDescriptor.setKeyInfo(keyInfo);

    if (issuerDN != null && serialNumber != null) {
        BigInteger serialNumberValue = new BigInteger(serialNumber);
        X509Data x509Data = new X509Data();
        X509IssuerSerialType x509IssuerSerialType = new X509IssuerSerialType();
        x509IssuerSerialType.setX509IssuerName(issuerDN);
        x509IssuerSerialType.setX509SerialNumber(serialNumberValue);
        x509Data.getX509DataContent()
                .add(new ObjectFactory().createX509DataX509IssuerSerial(x509IssuerSerialType));
        keyInfo.getContent().add(x509Data);
    }

    logger.debug("Generated KeyDescriptor for document signing with keyname " + keyPairName);

    return keyDescriptor;

}

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From source file:acp.sdk.SecureUtil.java

/**
 * /*  www  . ja  va2 s .c om*/
 * @param tPIN
 * @param iPan
 * @param publicKey
 * @return
 */
public String assymEncrypt(String tPIN, String iPan, RSAPublicKey publicKey) {

    System.out.println("SampleHashMap::assymEncrypt([" + tPIN + "])");
    System.out.println("SampleHashMap::assymEncrypt(PIN =[" + tPIN + "])");

    try {
        int tKeyLength = 1024;
        int tBlockSize = tKeyLength / 8;

        byte[] tTemp = null;

        tTemp = SecureUtil.pin2PinBlockWithCardNO(tPIN, iPan);
        tTemp = addPKCS1Padding(tTemp, tBlockSize);

        BigInteger tPlainText = new BigInteger(tTemp);
        BigInteger tCipherText = tPlainText.modPow(publicKey.getPublicExponent(), publicKey.getModulus());

        byte[] tCipherBytes = tCipherText.toByteArray();
        int tCipherLength = tCipherBytes.length;
        if (tCipherLength > tBlockSize) {
            byte[] tTempBytes = new byte[tBlockSize];
            System.arraycopy(tCipherBytes, tCipherLength - tBlockSize, tTempBytes, 0, tBlockSize);
            tCipherBytes = tTempBytes;
        } else if (tCipherLength < tBlockSize) {
            byte[] tTempBytes = new byte[tBlockSize];
            for (int i = 0; i < tBlockSize - tCipherLength; i++) {
                tTempBytes[i] = 0x00;
            }
            System.arraycopy(tCipherBytes, 0, tTempBytes, tBlockSize - tCipherLength, tCipherLength);
            tCipherBytes = tTempBytes;
        }
        String tEncryptPIN = new String(SecureUtil.base64Encode(tCipherBytes));

        System.out.println("SampleHashMap::assymEncrypt(EncryptCardNo =[" + tEncryptPIN + "])");

        return tEncryptPIN;
    } catch (Exception e) {
        e.printStackTrace(System.out);
        return tPIN;
    } catch (Error e) {
        e.printStackTrace(System.out);
        return tPIN;
    }
}

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From source file:com.netscape.cmsutil.crypto.CryptoUtil.java

public static byte[] getPublicExponent(PublicKey pubk) {
    RSAPublicKey rsaKey = (RSAPublicKey) pubk;

    return rsaKey.getPublicExponent().toByteArray();
}

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From source file:com.netscape.cmsutil.crypto.CryptoUtil.java

public static X509Key convertPublicKeyToX509Key(PublicKey pubk) throws InvalidKeyException {
    X509Key xKey;/*w  w  w  .  jav  a2  s  .c  o  m*/

    if (pubk instanceof RSAPublicKey) {
        RSAPublicKey rsaKey = (RSAPublicKey) pubk;

        xKey = new netscape.security.provider.RSAPublicKey(new BigInt(rsaKey.getModulus()),
                new BigInt(rsaKey.getPublicExponent()));
    } else if (pubk instanceof PK11ECPublicKey) {
        byte encoded[] = pubk.getEncoded();
        xKey = CryptoUtil.getPublicX509ECCKey(encoded);
    } else {
        // Assert.assert(pubk instanceof DSAPublicKey);
        DSAPublicKey dsaKey = (DSAPublicKey) pubk;
        DSAParams params = dsaKey.getParams();

        xKey = new netscape.security.provider.DSAPublicKey(dsaKey.getY(), params.getP(), params.getQ(),
                params.getG());
    }
    return xKey;
}

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