Example usage for javax.crypto.spec IvParameterSpec IvParameterSpec

Introduction

In this page you can find the example usage for javax.crypto.spec IvParameterSpec IvParameterSpec.

Prototype

public IvParameterSpec(byte[] iv)

Source Link

Document

Creates an IvParameterSpec object using the bytes in iv as the IV.

Usage

From source file:Main.java

private static byte[] decrypt(byte[] key, byte[] encrypted) throws Exception {
    SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, skeySpec, new IvParameterSpec(new byte[cipher.getBlockSize()]));
    return cipher.doFinal(encrypted);
}

From source file:Main.java

private static byte[] decrypt(byte[] raw, byte[] encrypted) throws Exception {
    SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, skeySpec, new IvParameterSpec(new byte[cipher.getBlockSize()]));
    byte[] decrypted = cipher.doFinal(encrypted);
    return decrypted;
}

From source file:Main.java

public static byte[] decrypt(byte[] ivBytes, byte[] keyBytes, byte[] textBytes) {
    try {/*from w ww.j a va 2  s .  c  o m*/
        AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivBytes);
        SecretKeySpec newKey = new SecretKeySpec(keyBytes, "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, newKey, ivSpec);
        return cipher.doFinal(textBytes);
    } catch (Exception e) {
        return errorbyte;
    }
}

From source file:Main.java

public static String decode(String key, String ciphertext) throws Exception {
    byte[] bs = parseHexStr2Byte(ciphertext);
    IvParameterSpec ivSpec = new IvParameterSpec(HEX.getBytes());
    SecretKeySpec secretKeySpec = createKey(key);
    Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
    c.init(Cipher.DECRYPT_MODE, secretKeySpec, ivSpec);
    return new String(c.doFinal(bs), "UTF-8");
}

From source file:Main.java

public static String encode(String key, String cleartext) throws Exception {
    SecretKeySpec secretKeySpec = createKey(key);
    IvParameterSpec ivSpec = new IvParameterSpec(HEX.getBytes());
    Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
    c.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivSpec);
    String result = parseByte2HexStr(c.doFinal(cleartext.getBytes("UTF-8")));

    return result;
}

From source file:Main.java

public static byte[] encrypt(byte[] ivBytes, byte[] keyBytes, byte[] textBytes) {
    try {//from w w  w  .  j  av a2  s  .  c o m
        AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivBytes);
        SecretKeySpec newKey = new SecretKeySpec(keyBytes, "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, newKey, ivSpec);
        return cipher.doFinal(textBytes);
    } catch (Exception e) {
        Log.e(TAG, "Error during encryption: " + e.toString());
        return errorbyte;
    }
}

From source file:licenceexecuter.Encryptor.java

public static String encrypt(String key, String initVector, String value) {
    try {/*  w  w  w .j a  va 2s.c o m*/
        IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
        SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);

        byte[] encrypted = cipher.doFinal(value.getBytes());
        return Base64.encodeBase64String(encrypted);
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}

From source file:Main.java

public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception {

    Key deskey = null;//from  ww w.j  a v a  2 s .c  o  m
    DESedeKeySpec spec = new DESedeKeySpec(key);
    SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
    deskey = keyfactory.generateSecret(spec);

    Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");
    IvParameterSpec ips = new IvParameterSpec(keyiv);
    cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);
    byte[] bOut = cipher.doFinal(data);

    return bOut;
}

From source file:Main.java

public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception {

    Key deskey = null;/*from   ww  w  . ja  va  2  s. c om*/
    DESedeKeySpec spec = new DESedeKeySpec(key);
    SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
    deskey = keyfactory.generateSecret(spec);

    Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");
    IvParameterSpec ips = new IvParameterSpec(keyiv);

    cipher.init(Cipher.DECRYPT_MODE, deskey, ips);

    byte[] bOut = cipher.doFinal(data);

    return bOut;

}

From source file:Main.java

public static byte[] getDecCode(byte[] byteD, String seed) {
    byte[] byteFina = null;
    Cipher cipher = null;/*from  www  .ja  v a  2 s.  c om*/

    try {
        SecretKeySpec skeySpec = new SecretKeySpec(getRawKey(seed.getBytes()), "AES");
        cipher = Cipher.getInstance("AES/CFB/NoPadding");
        cipher.init(Cipher.DECRYPT_MODE, skeySpec, new IvParameterSpec(new byte[cipher.getBlockSize()]));
        byteFina = cipher.doFinal(byteD);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        cipher = null;
    }

    return byteFina;
}