Example usage for java.security PrivateKey getEncoded

Introduction

In this page you can find the example usage for java.security PrivateKey getEncoded.

Prototype

public byte[] getEncoded();

Source Link

Document

Returns the key in its primary encoding format, or null if this key does not support encoding.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String algorithm = "DSA"; // or RSA, DH, etc.

    // Generate a 1024-bit Digital Signature Algorithm (DSA) key pair
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance(algorithm);
    keyGen.initialize(1024);//from   w w w . j  av  a 2  s.c  o m
    KeyPair keypair = keyGen.genKeyPair();
    PrivateKey privateKey = keypair.getPrivate();
    PublicKey publicKey = keypair.getPublic();

    byte[] privateKeyBytes = privateKey.getEncoded();
    byte[] publicKeyBytes = publicKey.getEncoded();
}

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From source file:MainClass.java

public static void main(String args[]) throws Exception {
    MainClass kpge = new MainClass();
    KeyPair kp = kpge.generateKeyPair(999);
    System.out.println("\n-- Private Key ----");
    PrivateKey priKey = kp.getPrivate();
    System.out.println("   Algorithm=" + priKey.getAlgorithm());
    System.out.println("   Encoded=" + priKey.getEncoded());
    System.out.println("   Format=" + priKey.getFormat());
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    String algorithm = "DSA"; // or RSA, DH, etc.

    // Generate a 1024-bit Digital Signature Algorithm (DSA) key pair
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance(algorithm);
    keyGen.initialize(1024);//from   w w  w  . j  a va 2  s  .c  o m
    KeyPair keypair = keyGen.genKeyPair();
    PrivateKey privateKey = keypair.getPrivate();
    PublicKey publicKey = keypair.getPublic();

    byte[] privateKeyBytes = privateKey.getEncoded();
    byte[] publicKeyBytes = publicKey.getEncoded();

    KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
    EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(privateKeyBytes);
    PrivateKey privateKey2 = keyFactory.generatePrivate(privateKeySpec);

    EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(publicKeyBytes);
    PublicKey publicKey2 = keyFactory.generatePublic(publicKeySpec);

    // The orginal and new keys are the same
    boolean same = privateKey.equals(privateKey2);
    same = publicKey.equals(publicKey2);
}

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From source file:cn.lynx.emi.license.GenerateKeyPairs.java

public static void main(String[] args) throws NoSuchAlgorithmException {
    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    SecureRandom secrand = new SecureRandom();
    secrand.setSeed("cn.lynx.emi".getBytes());
    keygen.initialize(4096, secrand);//from   w  ww  .j a  v a 2 s  . com
    KeyPair keys = keygen.genKeyPair();

    PublicKey pubkey = keys.getPublic();
    PrivateKey prikey = keys.getPrivate();

    String myPubKey = Base64.encodeBase64String(pubkey.getEncoded());
    String myPriKey = Base64.encodeBase64String(prikey.getEncoded());
    System.out.println(prikey);
    System.out.println("pubKey=" + myPubKey);
    System.out.println("priKey=" + myPriKey);
}

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From source file:com.clustercontrol.util.KeyCheck.java

/**
 * ????????//from  w w w  .j a  v a2  s  .  c  o m
 * 
 * @param args
 */
public static void main(String[] args) {
    PrivateKey privateKey = null;
    PublicKey publicKey = null;

    /// ??????? true
    /// ???????? false (?)
    boolean flag = false;
    if (flag) {
        try {
            // ?
            privateKey = getPrivateKey(
                    "???????privateKey.txt??");

            // ?
            publicKey = getPublicKey("???????");
            // publicKey = getPublicKey(publicKeyStr);
        } catch (Exception e) {
            System.out.println("hoge" + e.getMessage());
        }
    } else {
        KeyPairGenerator generator;
        try {
            generator = KeyPairGenerator.getInstance(ALGORITHM);
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
            // ?? 1024
            generator.initialize(1024, random);
            KeyPair keyPair = generator.generateKeyPair();
            privateKey = keyPair.getPrivate();
            publicKey = keyPair.getPublic();
        } catch (NoSuchAlgorithmException ex) {
            System.out.println(ex.getMessage());
        }
    }

    //
    // ?
    System.out.println("?");
    System.out.println(byte2String(privateKey.getEncoded()));
    System.out.println("?");
    System.out.println(byte2String(publicKey.getEncoded()));

    // ???????
    String string = "20140701_nttdata";
    byte[] src = string.getBytes();
    System.out.println("??String");
    System.out.println(string);
    System.out.println("??byte");
    System.out.println(byte2String(src));

    // ?
    try {
        String encStr = encrypt(string, privateKey);
        System.out.println("?");
        System.out.println(encStr);

        // ?
        String decStr = decrypt(encStr, publicKey);
        System.out.println("?");
        System.out.println(decStr);
    } catch (Exception e) {
        System.out.println(e.getMessage());
    }

}

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From source file:org.casbah.provider.KeyHelper.java

private static byte[] encodeKeyToDer(char[] keypass, PrivateKey key) {
    return key.getEncoded();
}

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From source file:org.sinekartads.utils.X509Utils.java

public static String privateKeyToHex(PrivateKey privateKey) {

    byte[] privateKeyEnc = privateKey.getEncoded();
    return HexUtils.encodeHex(privateKeyEnc);
}

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From source file:de.alpharogroup.crypto.key.PrivateKeyExtensions.java

/**
 * Transform the given {@link PrivateKey} to a base64 encoded {@link String} value.
 *
 * @param privateKey//from w w w.j  a  v  a2 s . co  m
 *            the private key
 * @return the new base64 encoded {@link String} value.
 */
public static String toBase64(final PrivateKey privateKey) {
    final byte[] encoded = privateKey.getEncoded();
    final String privateKeyAsBase64String = Base64.encodeBase64String(encoded);
    return privateKeyAsBase64String;
}

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From source file:com.aqnote.shared.cryptology.cert.io.PKCSTransformer.java

public static String getKeyFileStringB64(PrivateKey privKey) throws Exception {
    return Base64.encodeBase64String(privKey.getEncoded());
}

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From source file:net.nicholaswilliams.java.licensing.encryption.KeyFileUtilities.java

protected static byte[] writeEncryptedPrivateKey(PrivateKey privateKey, char[] passphrase) {
    PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(privateKey.getEncoded());
    return Encryptor.encryptRaw(pkcs8EncodedKeySpec.getEncoded(), passphrase);
}

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