Example usage for java.security Key getEncoded

Introduction

In this page you can find the example usage for java.security Key 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:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    KeyGenerator generator = KeyGenerator.getInstance("AES", "BC");
    generator.init(128);//from  w w  w  .j a  v  a 2 s  .  com
    Key keyToBeWrapped = generator.generateKey();
    System.out.println("input    : " + new String(keyToBeWrapped.getEncoded()));

    // create a wrapper and do the wrapping
    Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding", "BC");
    KeyGenerator keyGen = KeyGenerator.getInstance("AES", "BC");
    keyGen.init(256);
    Key wrapKey = keyGen.generateKey();
    cipher.init(Cipher.ENCRYPT_MODE, wrapKey);
    byte[] wrappedKey = cipher.doFinal(keyToBeWrapped.getEncoded());
    System.out.println("wrapped  : " + new String(wrappedKey));

    // unwrap the wrapped key
    cipher.init(Cipher.DECRYPT_MODE, wrapKey);
    Key key = new SecretKeySpec(cipher.doFinal(wrappedKey), "AES");
    System.out.println("unwrapped: " + new String(key.getEncoded()));
}

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From source file:Main.java

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

    byte[] input = "input".getBytes();
    byte[] ivBytes = "1234567812345678".getBytes();

    Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding", "BC");
    KeyGenerator generator = KeyGenerator.getInstance("AES", "BC");
    generator.init(128);//from  w ww. j  a v a2 s  . c  om
    Key encryptionKey = generator.generateKey();
    System.out.println("key : " + new String(encryptionKey.getEncoded()));

    cipher.init(Cipher.ENCRYPT_MODE, encryptionKey, new IvParameterSpec(ivBytes));
    byte[] cipherText = new byte[cipher.getOutputSize(input.length)];
    int ctLength = cipher.update(input, 0, input.length, cipherText, 0);
    ctLength += cipher.doFinal(cipherText, ctLength);
    Key decryptionKey = new SecretKeySpec(encryptionKey.getEncoded(), encryptionKey.getAlgorithm());

    cipher.init(Cipher.DECRYPT_MODE, decryptionKey, new IvParameterSpec(ivBytes));
    byte[] plainText = new byte[cipher.getOutputSize(ctLength)];
    int ptLength = cipher.update(cipherText, 0, ctLength, plainText, 0);
    ptLength += cipher.doFinal(plainText, ptLength);
    System.out.println("plain : " + new String(plainText));
}

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From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    byte[] input = "www.java2s.com".getBytes();

    byte[] ivBytes = new byte[] { 0x00, 0x00, 0x00, 0x01, 0x04, 0x05, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x01 };//from   w w  w  . ja v a  2s  .c  om

    Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding", "BC");
    KeyGenerator generator = KeyGenerator.getInstance("AES", "BC");

    generator.init(192);

    Key encryptionKey = generator.generateKey();

    System.out.println("key   : " + Utils.toHex(encryptionKey.getEncoded()));
    System.out.println("input : " + new String(input));

    // encryption pass
    cipher.init(Cipher.ENCRYPT_MODE, encryptionKey, new IvParameterSpec(ivBytes));
    byte[] cipherText = new byte[cipher.getOutputSize(input.length)];
    int ctLength = cipher.update(input, 0, input.length, cipherText, 0);
    ctLength += cipher.doFinal(cipherText, ctLength);

    // decryption pass
    Key decryptionKey = new SecretKeySpec(encryptionKey.getEncoded(), encryptionKey.getAlgorithm());
    cipher.init(Cipher.DECRYPT_MODE, decryptionKey, new IvParameterSpec(ivBytes));
    byte[] plainText = new byte[cipher.getOutputSize(ctLength)];
    int ptLength = cipher.update(cipherText, 0, ctLength, plainText, 0);
    ptLength += cipher.doFinal(plainText, ptLength);
    System.out.println("plain : " + new String(plainText) + " bytes: " + ptLength);
}

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From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    byte[] input = "www.java2s.com".getBytes();
    byte[] keyBytes = new byte[] { 0x73, 0x2f, 0x2d, 0x33, (byte) 0xc8, 0x01, 0x73, 0x2b, 0x72, 0x06, 0x75,
            0x6c, (byte) 0xbd, 0x44, (byte) 0xf9, (byte) 0xc1, (byte) 0xc1, 0x03, (byte) 0xdd, (byte) 0xd9,
            0x7c, 0x7c, (byte) 0xbe, (byte) 0x8e };
    byte[] ivBytes = new byte[] { (byte) 0xb0, 0x7b, (byte) 0xf5, 0x22, (byte) 0xc8, (byte) 0xd6, 0x08,
            (byte) 0xb8 };

    // encrypt the data using precalculated keys

    Cipher cEnc = Cipher.getInstance("DESede/CBC/PKCS7Padding", "BC");
    cEnc.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(keyBytes, "DESede"), new IvParameterSpec(ivBytes));

    byte[] out = cEnc.doFinal(input);
    // decrypt the data using PBE

    char[] password = "password".toCharArray();
    byte[] salt = new byte[] { 0x7d, 0x60, 0x43, 0x5f, 0x02, (byte) 0xe9, (byte) 0xe0, (byte) 0xae };
    int iterationCount = 2048;
    PBEKeySpec pbeSpec = new PBEKeySpec(password, salt, iterationCount);
    SecretKeyFactory keyFact = SecretKeyFactory.getInstance("PBEWithSHAAnd3KeyTripleDES");

    Cipher cDec = Cipher.getInstance("PBEWithSHAAnd3KeyTripleDES");
    Key sKey = keyFact.generateSecret(pbeSpec);

    cDec.init(Cipher.DECRYPT_MODE, sKey);

    System.out.println("cipher : " + new String(out));
    System.out.println("gen key: " + new String(sKey.getEncoded()));
    System.out.println("gen iv : " + new String(cDec.getIV()));
    System.out.println("plain  : " + new String(cDec.doFinal(out)));
}

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From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
    byte[] input = "www.java2s.com".getBytes();
    byte[] keyBytes = new byte[] { 0x73, 0x2f, 0x2d, 0x33, (byte) 0xc8, 0x01, 0x73, 0x2b, 0x72, 0x06, 0x75,
            0x6c, (byte) 0xbd, 0x44, (byte) 0xf9, (byte) 0xc1, (byte) 0xc1, 0x03, (byte) 0xdd, (byte) 0xd9,
            0x7c, 0x7c, (byte) 0xbe, (byte) 0x8e };
    byte[] ivBytes = new byte[] { (byte) 0xb0, 0x7b, (byte) 0xf5, 0x22, (byte) 0xc8, (byte) 0xd6, 0x08,
            (byte) 0xb8 };

    // encrypt the data using precalculated keys

    Cipher cEnc = Cipher.getInstance("DESede/CBC/PKCS7Padding", "BC");

    cEnc.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(keyBytes, "DESede"), new IvParameterSpec(ivBytes));

    byte[] out = cEnc.doFinal(input);

    // decrypt the data using PBE

    char[] password = "password".toCharArray();
    byte[] salt = new byte[] { 0x7d, 0x60, 0x43, 0x5f, 0x02, (byte) 0xe9, (byte) 0xe0, (byte) 0xae };
    int iterationCount = 2048;
    PBEKeySpec pbeSpec = new PBEKeySpec(password);
    SecretKeyFactory keyFact = SecretKeyFactory.getInstance("PBEWithSHAAnd3KeyTripleDES", "BC");

    Cipher cDec = Cipher.getInstance("PBEWithSHAAnd3KeyTripleDES", "BC");
    Key sKey = keyFact.generateSecret(pbeSpec);

    cDec.init(Cipher.DECRYPT_MODE, sKey, new PBEParameterSpec(salt, iterationCount));

    System.out.println("cipher : " + new String(out));
    System.out.println("gen key: " + new String(sKey.getEncoded()));
    System.out.println("gen iv : " + new String(cDec.getIV()));
    System.out.println("plain  : " + new String(cDec.doFinal(out)));
}

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From source file:MainClass.java

public static void main(String[] args) throws Exception {
    KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
    keyGenerator.init(128);//from w  ww  .  jav a 2s .c  o  m
    Key blowfishKey = keyGenerator.generateKey();

    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
    keyPairGenerator.initialize(1024);
    KeyPair keyPair = keyPairGenerator.genKeyPair();

    Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
    cipher.init(Cipher.ENCRYPT_MODE, keyPair.getPublic());

    byte[] blowfishKeyBytes = blowfishKey.getEncoded();
    System.out.println(new String(blowfishKeyBytes));
    byte[] cipherText = cipher.doFinal(blowfishKeyBytes);
    System.out.println(new String(cipherText));
    cipher.init(Cipher.DECRYPT_MODE, keyPair.getPrivate());

    byte[] decryptedKeyBytes = cipher.doFinal(cipherText);
    System.out.println(new String(decryptedKeyBytes));
    SecretKey newBlowfishKey = new SecretKeySpec(decryptedKeyBytes, "Blowfish");
}

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From source file:Main.java

public static byte[] getPublicKey(Map<String, Object> keyMap) throws Exception {
    Key key = (Key) keyMap.get(PUBLIC_KEY);
    return key.getEncoded();
}

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From source file:vng.paygate.domain.common.RC4.java

public static String getKeyAsString(Key key) {
    byte[] keyBytes = key.getEncoded();

    String sKey = Base64.encodeBase64String(keyBytes);
    return sKey.replace(sCR, "").replace(sNL, "");
}

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From source file:Main.java

static String keyToBase64(Key k) {
    if (k != null)
        return encodeB64(k.getEncoded());
    return null;
}

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From source file:Main.java

public static String formatKey(Key key) {
    String algo = key.getAlgorithm();
    String fmt = key.getFormat();
    byte[] encoded = key.getEncoded();
    return "Key[algorithm=" + algo + ", format=" + fmt + ", bytes=" + encoded.length + "]";
}

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