Example usage for java.security KeyPair getPublic

Introduction

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

Prototype

public PublicKey getPublic()

Source Link

Document

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

Usage

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 w  w .  j  a v a2 s .  c o m*/
    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);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    //Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    byte[] input = "ab".getBytes();
    Cipher cipher = Cipher.getInstance("ElGamal/None/NoPadding", "BC");
    KeyPairGenerator generator = KeyPairGenerator.getInstance("ElGamal", "BC");
    SecureRandom random = new SecureRandom();

    generator.initialize(128, random);// ww w.  j  a  v  a 2s  .  co  m

    KeyPair pair = generator.generateKeyPair();
    Key pubKey = pair.getPublic();
    Key privKey = pair.getPrivate();
    cipher.init(Cipher.ENCRYPT_MODE, pubKey, random);
    byte[] cipherText = cipher.doFinal(input);
    System.out.println("cipher: " + new String(cipherText));

    cipher.init(Cipher.DECRYPT_MODE, privKey);
    byte[] plainText = cipher.doFinal(cipherText);
    System.out.println("plain : " + new String(plainText));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    byte[] input = "ab".getBytes();
    Cipher cipher = Cipher.getInstance("ElGamal/None/NoPadding", "BC");
    KeyPairGenerator generator = KeyPairGenerator.getInstance("ElGamal", "BC");
    SecureRandom random = new SecureRandom();

    generator.initialize(128, random);/*ww  w  .j a  v a  2 s .  com*/

    KeyPair pair = generator.generateKeyPair();
    Key pubKey = pair.getPublic();
    Key privKey = pair.getPrivate();
    cipher.init(Cipher.ENCRYPT_MODE, pubKey, random);
    byte[] cipherText = cipher.doFinal(input);
    System.out.println("cipher: " + new String(cipherText));

    cipher.init(Cipher.DECRYPT_MODE, privKey);
    byte[] plainText = cipher.doFinal(cipherText);
    System.out.println("plain : " + new String(plainText));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    byte[] input = "abc".getBytes();
    Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding", "BC");
    SecureRandom random = new SecureRandom();
    KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", "BC");

    generator.initialize(256, random);/*from   w  w  w .  j a v  a  2  s.  co  m*/

    KeyPair pair = generator.generateKeyPair();
    Key pubKey = pair.getPublic();
    Key privKey = pair.getPrivate();

    cipher.init(Cipher.ENCRYPT_MODE, pubKey, random);
    byte[] cipherText = cipher.doFinal(input);
    System.out.println("cipher: " + new String(cipherText));

    cipher.init(Cipher.DECRYPT_MODE, privKey);
    byte[] plainText = cipher.doFinal(cipherText);
    System.out.println("plain : " + new String(plainText));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    byte[] input = "abc".getBytes();
    Cipher cipher = Cipher.getInstance("RSA/None/OAEPWithSHA1AndMGF1Padding", "BC");
    SecureRandom random = new SecureRandom();
    KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA", "BC");

    generator.initialize(386, random);//from w  w w.  j av a2s  .c om

    KeyPair pair = generator.generateKeyPair();
    Key pubKey = pair.getPublic();

    Key privKey = pair.getPrivate();

    cipher.init(Cipher.ENCRYPT_MODE, pubKey, random);
    byte[] cipherText = cipher.doFinal(input);
    System.out.println("cipher: " + new String(cipherText));

    cipher.init(Cipher.DECRYPT_MODE, privKey);
    byte[] plainText = cipher.doFinal(cipherText);
    System.out.println("plain : " + new String(plainText));
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String algorithm = "";
    KeyPair keyPair = KeyPairGenerator.getInstance(algorithm).generateKeyPair();

    System.out.println(keyPair.getPublic());
    System.out.println(keyPair.getPrivate());

}

From source file:KeyTools.java

public static void main(String[] rgstring) {
    try {/*from   w  w  w  .  jav  a  2s .  c o m*/
        File filePublic = new File(rgstring[0]);
        File filePrivate = new File(rgstring[1]);

        KeyPairGenerator keypairgenerator = KeyPairGenerator.getInstance("DSA");

        keypairgenerator.initialize(1024, new SecureRandom());

        KeyPair keypair = keypairgenerator.generateKeyPair();

        writeToFile(keypair.getPublic(), filePublic);
        writeToFile(keypair.getPrivate(), filePrivate);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH");
    keyGen.initialize(576);/*from  w  ww. jav a 2 s . c o m*/
    KeyPair keypair = keyGen.genKeyPair();
    PrivateKey privateKey = keypair.getPrivate();
    PublicKey publicKey = keypair.getPublic();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(1024);/*from w ww  .  ja v  a 2s. com*/
    KeyPair keypair = keyGen.genKeyPair();
    PrivateKey privateKey = keypair.getPrivate();
    PublicKey publicKey = keypair.getPublic();
}

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 v a  2  s. c om*/
    KeyPair keypair = keyGen.genKeyPair();
    PrivateKey privateKey = keypair.getPrivate();
    PublicKey publicKey = keypair.getPublic();
}