Example usage for javax.crypto Cipher doFinal

List of usage examples for javax.crypto Cipher doFinal

  1. HOME
  2. Java
  3. javax
  4. javax.crypto.*
  5. Cipher
  6. doFinal

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:kr.co.exsoft.eframework.util.LicenseUtil.java

/**
 * ./*  ww w .j  av a  2  s  .com*/
 * 
 * @param word
 * @param key
 * @return String
 */
private static String unspell(String word, Key key) throws Exception {
    Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
    cipher.init(Cipher.DECRYPT_MODE, key);

    byte[] ciphertext = getBytes(word);
    byte[] cleartext = cipher.doFinal(ciphertext);

    return new String(cleartext);
}

From source file:kr.co.exsoft.eframework.util.LicenseUtil.java

/**
 * ./*from  w  ww. j av a  2  s  .co m*/
 * 
 * @param word
 * @param key
 * @return String
 * @throws NoSuchPaddingException 
 * @throws NoSuchAlgorithmException 
 */
private static String spell(String word, Key key) throws Exception {
    Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
    cipher.init(Cipher.ENCRYPT_MODE, key);

    byte[] cleartext = word.getBytes();
    byte[] ciphertext = cipher.doFinal(cleartext);

    return getString(ciphertext);
}

From source file:br.com.ufjf.labredes.crypto.Cryptography.java

public static String encrypt(Serializable object, byte[] aesKey) {
    SecretKeySpec secretKey = new SecretKeySpec(aesKey, ALGORITHM_SYM);
    String object_encrypted = null;
    try {//  w  w w. ja va  2s . co m
        final Cipher cipher = Cipher.getInstance(ALGORITHM_SYM);
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] data = SerializationUtils.serialize(object);
        byte[] cipherText = cipher.doFinal(data);
        object_encrypted = new BASE64Encoder().encode(cipherText);
    } catch (Exception e) {
        e.printStackTrace();
        return "bbb";
    }
    return object_encrypted;
}

From source file:com.fujitsu.dc.common.auth.token.LocalToken.java

/**
 * ??.// w  w w . jav  a 2 s  .c  o m
 * @param in 
 * @param ivBytes 
 * @return ???
 */
public static String encode(final String in, final byte[] ivBytes) {
    // IV??CELL?URL??????
    Cipher cipher;
    try {
        cipher = Cipher.getInstance(AES_CBC_PKCS5_PADDING);
        cipher.init(Cipher.ENCRYPT_MODE, aesKey, new IvParameterSpec(ivBytes));
        byte[] cipherBytes = cipher.doFinal(in.getBytes(CharEncoding.UTF_8));
        return DcCoreUtils.encodeBase64Url(cipherBytes);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }

}

From source file:io.personium.common.auth.token.LocalToken.java

/**
 * ??./*from   ww  w  . j a  v  a 2 s  .  co  m*/
 * @param in 
 * @param ivBytes 
 * @return ???
 */
public static String encode(final String in, final byte[] ivBytes) {
    // IV??CELL?URL??????
    Cipher cipher;
    try {
        cipher = Cipher.getInstance(AES_CBC_PKCS5_PADDING);
        cipher.init(Cipher.ENCRYPT_MODE, aesKey, new IvParameterSpec(ivBytes));
        byte[] cipherBytes = cipher.doFinal(in.getBytes(CharEncoding.UTF_8));
        return PersoniumCoreUtils.encodeBase64Url(cipherBytes);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }

}

From source file:com.jopss.logico.negocio.util.CriptoUtils.java

public static String desEncode(String texto, String chave) {
    Cipher ecipher;
    SecretKey key;/*from   w  w  w. j a  v a2  s  . co m*/
    String encod = null;
    try {
        key = new SecretKeySpec(chave.getBytes("UTF-8"), 0, 8, "DES");
        ecipher = Cipher.getInstance("DES");
        ecipher.init(Cipher.ENCRYPT_MODE, key);

        byte[] utf8 = texto.getBytes("UTF8");
        byte[] crip = ecipher.doFinal(utf8);
        encod = new String(Hex.encodeHex(crip));

    } catch (Exception e) {
        log.error(e);
    }

    return encod;
}

From source file:com.jopss.logico.negocio.util.CriptoUtils.java

public static String desDecode(String texto, String chave) {
    Cipher dcipher;
    SecretKey key;//w w  w.ja  va 2 s  .  c  o  m
    String decod = null;

    try {
        key = new SecretKeySpec(chave.getBytes(), 0, 8, "DES");
        dcipher = Cipher.getInstance("DES");
        dcipher.init(Cipher.DECRYPT_MODE, key);
        byte[] dec = Hex.decodeHex(texto.toCharArray());
        byte[] utf8 = dcipher.doFinal(dec);
        decod = new String(utf8, "UTF8");
    } catch (Exception e) {
        log.error(e);
    }

    return decod;
}

From source file:com.cloudbees.plugins.credentials.SecretBytes.java

/**
 * Reverse operation of {@link #getEncryptedData()}. Returns null
 * if the given cipher text was invalid.
 *
 * @param data the bytes to decrypt./*from  w  w  w . j  a  va2  s . com*/
 * @return the secret bytes or {@code null} if the data was not originally encrypted.
 */
// copied from https://github.com/codehaus-plexus/plexus-cipher/blob/6ab0e38df80beed9ab3227ffab938b21dcdf5505/src
// /main/java/org/sonatype/plexus/components/cipher/PBECipher.java
@CheckForNull
public static SecretBytes decrypt(byte[] data) {
    if (data == null || data.length <= SALT_SIZE + 1) {
        return null;
    }
    try {
        int totalLen = data.length;
        byte[] salt = new byte[SALT_SIZE];
        System.arraycopy(data, 0, salt, 0, salt.length);
        byte padLen = data[salt.length];
        int len = totalLen - salt.length - 1 - (padLen & 0xff);
        if (len < 0) {
            return null;
        }
        byte[] encryptedBytes = new byte[len];
        System.arraycopy(data, salt.length + 1, encryptedBytes, 0, len);
        Cipher cipher = KEY.decrypt(salt);
        cipher.doFinal(encryptedBytes);
        return new SecretBytes(true, data);
    } catch (GeneralSecurityException e) {
        return null;
    }
}

From source file:com.lling.qiqu.utils.AesUtils.java

/**
 * Encrypts a message using a 128bit Bse64 key using AES.
 *
 * @param key     128bit Base64 AES key/*ww  w  .  j av a2 s . com*/
 * @param message Message to encrypt
 * @return hex encoded encrypted message
 */
public static String encrypt(String key, String message) {
    String encrypted = "";
    try {
        // Generate the secret key specs.
        byte[] keyArray = Base64.decodeBase64(key.getBytes());
        SecretKeySpec skeySpec = new SecretKeySpec(keyArray, "AES");
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        byte[] encrypt = cipher.doFinal(message.getBytes());
        encrypted = new String(hexCodec.encode(encrypt));
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RuntimeException(e);
    }
    return encrypted;
}

From source file:com.lling.qiqu.utils.AesUtils.java

/**
 * Encrypts a message using a 128bit Bse64 key using AES.
 *
 * @param key     128bit Base64 AES key/* w w w.  jav a  2s.c o m*/
 * @param message Message to encrypt
 * @return bse64 encoded encrypted message
 */
public static String encryptBase64(String key, String message) {
    String encrypted = "";
    try {
        // Generate the secret key specs.
        byte[] keyArray = Base64.decodeBase64(key.getBytes());
        SecretKeySpec skeySpec = new SecretKeySpec(keyArray, "AES");
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        byte[] encrypt = cipher.doFinal(message.getBytes());
        encrypted = new String(Base64.encodeBase64(encrypt));
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
        throw new RuntimeException(e);
    }
    return encrypted;
}