Example usage for java.security KeyPair getPrivate

Introduction

In this page you can find the example usage for java.security KeyPair getPrivate.

Prototype

public PrivateKey getPrivate()

Source Link

Document

Returns a reference to the private key component of this key pair.

Usage

From source file:com.vexsoftware.votifier.crypto.RSAIO.java

/**
 * Saves the key pair to the disk./* w  w  w .j av a  2 s  .  co  m*/
 * 
 * @param directory
 *            The directory to save to
 * @param keyPair
 *            The key pair to save
 * @throws Exception
 *             If an error occurs
 */
public static void save(File directory, KeyPair keyPair) throws Exception {
    PrivateKey privateKey = keyPair.getPrivate();
    PublicKey publicKey = keyPair.getPublic();

    // Store the public key.
    X509EncodedKeySpec publicSpec = new X509EncodedKeySpec(publicKey.getEncoded());
    FileOutputStream out = new FileOutputStream(directory + "/public.key");
    out.write(DatatypeConverter.printBase64Binary(publicSpec.getEncoded()).getBytes());
    out.close();

    // Store the private key.
    PKCS8EncodedKeySpec privateSpec = new PKCS8EncodedKeySpec(privateKey.getEncoded());
    out = new FileOutputStream(directory + "/private.key");
    out.write(DatatypeConverter.printBase64Binary(privateSpec.getEncoded()).getBytes());
    out.close();
}

From source file:MainClass.java

public static PKCS10CertificationRequest generateRequest(KeyPair pair) throws Exception {
    return new PKCS10CertificationRequest("SHA256withRSA", new X500Principal("CN=Requested Test Certificate"),
            pair.getPublic(), null, pair.getPrivate());
}

From source file:com.java.demo.RsaDemo.java

public static void Init() {
    try {/*w  ww . ja v a  2s. co m*/
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(512);
        KeyPair kp = keyPairGenerator.generateKeyPair();
        rSAPublicKey = (RSAPublicKey) kp.getPublic();
        rSAPrivateKey = (RSAPrivateKey) kp.getPrivate();
    } catch (Exception ex) {
        System.out.println("com.Java.Demo.RsaDemo.Init()" + ex.getMessage());
    }
}

From source file:love.sola.netsupport.util.RSAUtil.java

public static void genKeyPair() {
    try {/*  w  ww  .jav  a 2  s .  c  o m*/
        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
        kpg.initialize(1024);
        KeyPair kp = kpg.genKeyPair();
        publicKey = kp.getPublic();
        privateKey = kp.getPrivate();
        publicKey_s = Base64.encodeBase64String(publicKey.getEncoded());
        privateKey_s = Base64.encodeBase64String(privateKey.getEncoded());
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.floreantpos.license.FiveStarPOSKeyGenerator.java

public static void createKeys(String publicKeyUri, String privateKeyUri)
        throws NoSuchAlgorithmException, IOException {

    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
    keyGen.initialize(1024, new SecureRandom());
    KeyPair keyPair = keyGen.generateKeyPair();

    IOUtils.write(keyPair.getPublic().getEncoded(), new FileOutputStream(publicKeyUri));
    IOUtils.write(keyPair.getPrivate().getEncoded(), new FileOutputStream(privateKeyUri));

}

From source file:com.aqnote.shared.cryptology.asymmetric.dsa.DSAKeyPairGenTest.java

public static void generator() throws NoSuchAlgorithmException, FileNotFoundException, IOException {
    KeyPairGenerator keygen = KeyPairGenerator.getInstance(ALGORITHM);

    // ???//from  w ww .j  ava 2s .c o m
    SecureRandom secrand = new SecureRandom();
    secrand.setSeed(seed); // ??
    // ??, ??keysize ?. 512  1024  64 ?
    keygen.initialize(512, secrand);
    // ?pubkey?prikey
    KeyPair keys = keygen.generateKeyPair(); // ?
    PublicKey pubkey = keys.getPublic();
    PrivateKey prikey = keys.getPrivate();

    byte[] pubkeyByteArray = Base64.encodeBase64(pubkey.getEncoded());
    OutputStream os = new FileOutputStream(new File(PUBKEY_FILE_NAME));
    ByteArrayInputStream bais = new ByteArrayInputStream(pubkeyByteArray);
    StreamUtil.io(bais, os);
    bais.close();
    os.close();

    byte[] prikeyByteArray = Base64.encodeBase64(prikey.getEncoded());
    os = new FileOutputStream(new File(PRIKEY_FILE_NAME));
    bais = new ByteArrayInputStream(prikeyByteArray);
    StreamUtil.io(bais, os);
    bais.close();
    os.close();
}

From source file:com.github.ibole.infrastructure.security.ECDSA.java

public static void jdkECDSA() {
    try {//from  ww w.j  a  v  a2s  .c  o m
        // 1.?
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC");
        keyPairGenerator.initialize(256);
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        ECPublicKey ecPublicKey = (ECPublicKey) keyPair.getPublic();
        ECPrivateKey ecPrivateKey = (ECPrivateKey) keyPair.getPrivate();

        // 2.??
        PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(ecPrivateKey.getEncoded());

        KeyFactory keyFactory = KeyFactory.getInstance("EC");
        PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
        Signature signature = Signature.getInstance("SHA256withECDSA");
        signature.initSign(privateKey);
        signature.update(src.getBytes());
        byte[] res = signature.sign();
        System.out.println("??" + Base64.encodeBase64String(res));

        // 3.???
        X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(ecPublicKey.getEncoded());
        keyFactory = KeyFactory.getInstance("EC");
        PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
        signature = Signature.getInstance("SHA256withECDSA");
        signature.initVerify(publicKey);
        signature.update(src.getBytes());
        boolean bool = signature.verify(res);
        System.out.println("?" + bool);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.vexsoftware.votifier.util.rsa.RSAIO.java

/**
 * Saves the key pair to the disk./* w ww  .  jav  a2  s. c  om*/
 * 
 * @param directory
 *            The directory to save to
 * @param keyPair
 *            The key pair to save
 * @throws Exception
 *            If an error occurs
 */
public static void save(File directory, KeyPair keyPair) throws Exception {
    PrivateKey privateKey = keyPair.getPrivate();
    PublicKey publicKey = keyPair.getPublic();

    // Store the public key.
    X509EncodedKeySpec publicSpec = new X509EncodedKeySpec(publicKey.getEncoded());
    FileOutputStream out = null;
    try {
        out = new FileOutputStream(directory + "/public.key");
        out.write(DatatypeConverter.printBase64Binary(publicSpec.getEncoded()).getBytes());
    } finally {
        try {
            out.close();
        } catch (Exception exception) {
            // ignore
        }
    }

    // Store the private key.
    PKCS8EncodedKeySpec privateSpec = new PKCS8EncodedKeySpec(privateKey.getEncoded());
    try {
        out = new FileOutputStream(directory + "/private.key");
        out.write(DatatypeConverter.printBase64Binary(privateSpec.getEncoded()).getBytes());
    } finally {
        try {
            out.close();
        } catch (Exception exception) {
            // ignore
        }
    }
}

From source file:com.vmware.identity.rest.core.test.RequestSignerTest.java

@BeforeClass
public static void setup() throws NoSuchAlgorithmException {
    KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA");
    generator.initialize(2048);/*from  w w  w . j  a v a  2 s .  co m*/

    KeyPair pair = generator.generateKeyPair();
    publicKey = pair.getPublic();
    privateKey = pair.getPrivate();
}

From source file:com.aqnote.shared.cryptology.cert.util.KeyStoreUtil.java

public static KeyStore getPKCS12KeyStore(String alias, Certificate[] certChain, KeyPair keyPair, char[] passwd)
        throws Exception {

    PKCS12BagAttributeCarrier bagAttr = (PKCS12BagAttributeCarrier) keyPair.getPrivate();
    bagAttr.setBagAttribute(PKCSObjectIdentifiers.pkcs_9_at_friendlyName, new DERBMPString(alias));
    SubjectKeyIdentifier pubKeyId = new JcaX509ExtensionUtils().createSubjectKeyIdentifier(keyPair.getPublic());
    bagAttr.setBagAttribute(PKCSObjectIdentifiers.pkcs_9_at_localKeyId, pubKeyId);
    KeyStore store = KeyStore.getInstance(KEY_STORE_TYPE, JCE_PROVIDER);
    store.load(null, null);/*from   www .ja  va  2s  .  c  o m*/
    store.setKeyEntry(alias, keyPair.getPrivate(), passwd, certChain);
    return store;
}