Example usage for javax.crypto Cipher getInstance

Introduction

In this page you can find the example usage for javax.crypto Cipher getInstance.

Prototype

public static final Cipher getInstance(String transformation)
        throws NoSuchAlgorithmException, NoSuchPaddingException

Source Link

Document

Returns a Cipher object that implements the specified transformation.

Usage

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Cipher cipher = Cipher.getInstance("Blowfish/ECB/NoPadding");

    System.out.println(cipher.getProvider());

    cipher = Cipher.getInstance("Blowfish/ECB/NoPadding", "BC");

    System.out.println(cipher.getProvider());
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    byte[] data = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };

    Cipher c = Cipher.getInstance("Blowfish/ECB/NoPadding");

    SecretKey key192 = new SecretKeySpec(new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
            0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
            "Blowfish");

    c.init(Cipher.ENCRYPT_MODE, key192);
    c.doFinal(data);/*from   w w  w. j av a 2 s .co  m*/
}

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    KeyGenerator kg = KeyGenerator.getInstance("DES");
    Cipher c = Cipher.getInstance("DES/CBC/PKCS5Padding");
    Key key = kg.generateKey();//from w w  w  . j  a v  a 2s. c om

    c.init(Cipher.ENCRYPT_MODE, key);
    byte input[] = "Stand and unfold yourself".getBytes();
    byte encrypted[] = c.doFinal(input);
    byte iv[] = c.getIV();

    IvParameterSpec dps = new IvParameterSpec(iv);
    c.init(Cipher.DECRYPT_MODE, key, dps);
    byte output[] = c.doFinal(encrypted);
    System.out.println(new String(output));
}

From source file:Main.java

public static void main(String[] argv) throws Exception {

    SecretKey key = KeyGenerator.getInstance("DES").generateKey();

    Cipher ecipher = Cipher.getInstance("DES");
    ecipher.init(Cipher.ENCRYPT_MODE, key);

    SealedObject so = new SealedObject(new MySecretClass(), ecipher);

    String algoName = so.getAlgorithm(); // DES

    Cipher dcipher = Cipher.getInstance("DES");
    dcipher.init(Cipher.DECRYPT_MODE, key);
    MySecretClass o = (MySecretClass) so.getObject(dcipher);

}

From source file:MainClass.java

public static void main(String[] args) throws Exception {

    KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
    keyGenerator.init(128);/*from w ww  .ja  v a  2 s  .  c o  m*/
    SecretKey key = keyGenerator.generateKey();

    Cipher cipher = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);

    byte[] cipherText = cipher.doFinal("This is a test.".getBytes("UTF8"));

    System.out.println(new String(cipherText));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    KeyGenerator keyGenerator = KeyGenerator.getInstance("DESede");
    keyGenerator.init(168);//www . j ava  2s  .  co m
    Key key = keyGenerator.generateKey();

    Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);

    byte[] ciphertext = cipher.doFinal("text".getBytes("UTF8"));

    for (int i = 0; i < ciphertext.length; i++) {
        System.out.print(ciphertext[i] + " ");
    }

    cipher.init(Cipher.DECRYPT_MODE, key);

    byte[] decryptedText = cipher.doFinal(ciphertext);

    System.out.println(new String(decryptedText, "UTF8"));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    String creditCard = "1234567890";

    KeyGenerator keyGenerator = KeyGenerator.getInstance("DESede");

    Key key = keyGenerator.generateKey();
    Cipher cipher = Cipher.getInstance("DESede");
    cipher.init(Cipher.ENCRYPT_MODE, key);

    SealedObject so = new SealedObject(creditCard, cipher);

    String unencryptedCreditCard = (String) so.getObject(key);

    System.out.println(unencryptedCreditCard);
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    String text = "java2s";

    KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
    keyGenerator.init(128);/*from  w  w  w .  ja v  a 2s  .  c o m*/

    Key key = keyGenerator.generateKey();

    Cipher cipher = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);

    byte[] ciphertext = cipher.doFinal(text.getBytes("UTF8"));

    for (int i = 0; i < ciphertext.length; i++) {
        System.out.print(ciphertext[i] + " ");
    }
    cipher.init(Cipher.DECRYPT_MODE, key);
    byte[] decryptedText = cipher.doFinal(ciphertext);

    System.out.println(new String(decryptedText, "UTF8"));
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    byte[] data = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };

    SecretKey key64 = new SecretKeySpec(new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 },
            "Blowfish");

    Cipher c = Cipher.getInstance("Blowfish/ECB/NoPadding");

    c.init(Cipher.ENCRYPT_MODE, key64);
    c.doFinal(data);/* w ww .  ja  v  a 2  s .com*/

}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");

    keyGenerator.init(128);/*from  www . jav  a 2  s.  c  o m*/
    Key secretKey = keyGenerator.generateKey();

    Cipher cipherOut = Cipher.getInstance("Blowfish/CFB/NoPadding");

    cipherOut.init(Cipher.ENCRYPT_MODE, secretKey);
    BASE64Encoder encoder = new BASE64Encoder();
    byte iv[] = cipherOut.getIV();
    if (iv != null) {
        System.out.println("Initialization Vector of the Cipher:\n" + encoder.encode(iv));
    }
    FileInputStream fin = new FileInputStream("inputFile.txt");
    FileOutputStream fout = new FileOutputStream("outputFile.txt");
    CipherOutputStream cout = new CipherOutputStream(fout, cipherOut);
    int input = 0;
    while ((input = fin.read()) != -1) {
        cout.write(input);
    }

    fin.close();
    cout.close();
}