Example usage for javax.crypto Cipher doFinal

List of usage examples for javax.crypto Cipher doFinal

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Introduction

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

Prototype

public final byte[] doFinal(byte[] input) throws IllegalBlockSizeException, BadPaddingException

Source Link

Document

Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation.

Usage

From source file:com.norbl.util.StringUtil.java

public static String encrypt(SecretKey key, String s) throws Exception {
    Cipher c = Cipher.getInstance("AES");
    c.init(Cipher.ENCRYPT_MODE, key);
    byte[] enb = c.doFinal(s.getBytes());
    Base64 b64enc = new Base64();
    return (new String(b64enc.encode(enb)));
}

From source file:com.vico.license.util.rsa.RSAdoEncrypt.java

public static String encrypt(String source, byte[] publickey) throws Exception {

    String path = Thread.currentThread().getContextClassLoader().getResource("/").toURI().getPath();
    Key publicKey = null;//from   ww  w .ja  v a 2  s.co m

    publicKey = (Key) ByteArrayToObj.ByteToObject(publickey);

    /** Cipher???RSA */
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    byte[] b = source.getBytes("UTF-8");

    /** ?*/
    byte[] b1 = cipher.doFinal(b);

    String encryptedcode = Base64.encodeBase64String(b1);
    return encryptedcode;
}

From source file:com.aast.encrypt.EncryptManager.java

public static String encryptAES(String key, String value) {
    try {//from   w  w  w .  j  a v a 2 s . c  o m
        byte[] keyBytes = getKeyFromString(key);
        IvParameterSpec iv = new IvParameterSpec(keyBytes);
        SecretKeySpec skeySpec = new SecretKeySpec(keyBytes, "AES");

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

        byte[] encrypted = cipher.doFinal(value.getBytes());
        //            System.out.println("encrypted string: "
        //                    + Base64.encodeBase64String(encrypted));

        return Base64.encodeBase64String(encrypted);
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}

From source file:com.norbl.util.StringUtil.java

public static String decrypt(SecretKey key, String en) throws Exception {
    Base64 b64enc = new Base64();
    byte[] enb = b64enc.decode(en.getBytes());
    Cipher c = Cipher.getInstance("AES");
    c.init(Cipher.DECRYPT_MODE, key);
    byte[] denb = c.doFinal(enb);
    return (new String(denb));
}

From source file:com.elle.analyster.admissions.AESCrypt.java

public static String decrypt(String key, String initVector, String encrypted) {
    try {//from ww  w .  j a v  a2  s .  c om
        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.DECRYPT_MODE, skeySpec, iv);

        byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));

        return new String(original);
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}

From source file:illab.nabal.util.SecurityHelper.java

/**
 * Decrypt a AES-encrypted message.//from  www .  j  a  va2 s. com
 * 
 * @param encrypted
 * @return String
 * @throws Exception
 */
public static String decipher(String encrypted) throws Exception {
    if (StringHelper.isEmpty(encrypted) == false) {
        Cipher cipher = Cipher.getInstance(AES);
        cipher.init(Cipher.DECRYPT_MODE, SYSTEM_SECRET_KEY_SPEC);
        return new String(cipher.doFinal(Base64.decode(encrypted, Base64.DEFAULT)), HTTP.UTF_8);
    } else {
        return null;
    }
}

From source file:com.baidu.terminator.plugin.signer.customized.app.CipherUtil.java

public static byte[] process(Cipher cipher, int blockSize, byte[] input)
        throws IllegalBlockSizeException, BadPaddingException, ShortBufferException {
    if (input.length <= blockSize) {
        return cipher.doFinal(input);
    }//from ww w  . j  a  v  a2s . c  om
    byte[] output = new byte[OUTPUT_SIZE];
    int outputSize = 0;
    for (int i = 0;; i += blockSize) {
        if (i + blockSize < input.length)
            outputSize += cipher.doFinal(input, i, blockSize, output, outputSize);
        else {
            outputSize += cipher.doFinal(input, i, input.length - i, output, outputSize);
            break;
        }
    }
    return ArrayUtils.subarray(output, 0, outputSize);
}

From source file:com.elle.analyster.admissions.AESCrypt.java

public static String encrypt(String key, String initVector, String value) {
    try {// w ww .java  2  s .  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());
        System.out.println("encrypted string: " + Base64.encodeBase64String(encrypted));

        return Base64.encodeBase64String(encrypted);
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}

From source file:edu.wright.cs.sp16.ceg3120.util.PasswordEncryptionUtility.java

/**
 * Decrypts a given string using AES./* w ww .  j a v a  2  s  .co m*/
 * 
 * @param encrypted
 *            // Encrypted string.
 * @return // Returns decrypted string.
 */
public static String decrypt(String encrypted) {
    try {
        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.DECRYPT_MODE, skeySpec, iv);

        byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));
        System.out.println("Decrypted Password: " + new String(original, "UTF-8"));
        return new String(original, "UTF-8");
    } catch (RuntimeException e) {
        throw e;
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}

From source file:Main.java

private static byte[] Aes(byte[] byteData, byte[] byteKey, int opmode) throws Exception {
    Cipher cipher = null;
    try {//from ww  w.j ava  2  s.  c o  m
        SecretKeySpec aesKey = new SecretKeySpec(byteKey, "AES");
        cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(opmode, aesKey);

        return cipher.doFinal(byteData);
    } finally {
        cipher = null;
    }
}