Example usage for javax.crypto KeyGenerator generateKey

Introduction

In this page you can find the example usage for javax.crypto KeyGenerator generateKey.

Prototype

public final SecretKey generateKey()

Source Link

Document

Generates a secret key.

Usage

From source file:com.torchmind.authenticator.AbstractTokenGenerator.java

/**
 * {@inheritDoc}/*from   w w  w . jav a 2s .  c o m*/
 */
@NonNull
@Override
public SecretKey generateSecret() {
    try {
        KeyGenerator generator = KeyGenerator.getInstance("Hmac" + this.algorithm.name());
        generator.init(80);
        return generator.generateKey();
    } catch (NoSuchAlgorithmException ex) {
        throw new UnsupportedOperationException(
                "The specified algorithm is not supported by this Java VM implementation: " + ex.getMessage(),
                ex);
    }
}

From source file:org.edeoliveira.oauth2.dropwizard.oauth2.auth.CookieEncrypter.java

public CookieEncrypter() throws Exception {
    // Get the KeyGenerator
    KeyGenerator kgen = KeyGenerator.getInstance(ALGORITHM);
    kgen.init(BIT_LENGTH); // 192 and 256 bits may not be available

    // Generate the secret key specs
    SecretKey skey = kgen.generateKey();
    byte[] secretKey = skey.getEncoded();
    keySpec = new SecretKeySpec(secretKey, ALGORITHM);
}

From source file:org.jpos.qi.eeuser.ConsumersView.java

private SecretKey generateKey() throws NoSuchAlgorithmException {
    KeyGenerator gen = KeyGenerator.getInstance(HASH_ALGORITHM);
    return gen.generateKey();
}

From source file:com.muk.services.commerce.CryptoServiceImpl.java

@PostConstruct
public void postConstruct() {
    try {/*from   w w w .  jav a  2  s .c  o  m*/
        final KeyGenerator kgen = KeyGenerator.getInstance("AES");
        kgen.init(128);
        temporaryKey = new SecretKeySpec(kgen.generateKey().getEncoded(), "AES");

        final Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        final byte[] iv = new byte[cipher.getBlockSize()];
        new SecureRandom().nextBytes(iv);
        ivSpec = new IvParameterSpec(iv);
    } catch (final NoSuchAlgorithmException ex) {
        LOG.error("Failed to initalize encryption key", ex);
    } catch (final NoSuchPaddingException padEx) {
        LOG.error("Failed to get cipher.", padEx);
    }
}

From source file:se.vgregion.portal.cs.util.CryptoUtilImpl.java

/**
 * Encrypt a value and generate a keyfile. if the keyfile is not found then a new one is created
 * //from   w  w  w .  j a  va2s.c  o m
 * @param value
 *            - value to be encrypted
 * @throws GeneralSecurityException
 *             - security exception
 * @return Encrypted value
 */
@Override
public String encrypt(String value) throws GeneralSecurityException {
    if (!keyFile.exists()) {
        KeyGenerator keyGen = KeyGenerator.getInstance(AES);
        keyGen.init(KEY_SIZE);
        SecretKey sk = keyGen.generateKey();
        FileWriter fw = null;
        try {
            fw = new FileWriter(keyFile);
            fw.write(byteArrayToHexString(sk.getEncoded()));
            fw.flush();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                fw.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    SecretKeySpec sks = getSecretKeySpec();

    Cipher cipher = Cipher.getInstance(AES);
    cipher.init(Cipher.ENCRYPT_MODE, sks, cipher.getParameters());
    byte[] encrypted = cipher.doFinal(value.getBytes());
    return byteArrayToHexString(encrypted);
}

From source file:org.kuali.rice.kew.documentoperation.web.DocumentContentOperationAction.java

private SecretKey getSecretKey(String encryptionKey) throws Exception {
    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    SecretKey desKey = keygen.generateKey();

    // Create the cipher
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init((Cipher.UNWRAP_MODE), desKey);

    byte[] bytes = Base64.decodeBase64(encryptionKey.getBytes());

    SecretKeyFactory desFactory = SecretKeyFactory.getInstance("DES");

    DESKeySpec keyspec = new DESKeySpec(bytes);
    desKey = desFactory.generateSecret(keyspec);
    // Create the cipher
    cipher.init((Cipher.WRAP_MODE), desKey);
    return desKey;
}

From source file:org.codice.ddf.configuration.migration.MigrationZipFileTest.java

private void generateKeyWithWrongAlgorithm(Path keyPath) throws NoSuchAlgorithmException, IOException {
    KeyGenerator keyGenerator = KeyGenerator.getInstance("DES");
    SecretKey secretKey = keyGenerator.generateKey();
    char[] hexKey = encodeHex(secretKey.getEncoded());
    writeStringToFile(keyPath.toFile(), String.valueOf(hexKey), Charsets.UTF_8);
}

From source file:org.kuali.rice.core.impl.encryption.DemonstrationGradeEncryptionServiceImpl.java

private SecretKey unwrapEncodedKey(String key) throws Exception {
    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    SecretKey desKey = keygen.generateKey();

    // Create the cipher
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init((Cipher.UNWRAP_MODE), desKey);

    byte[] bytes = Base64.decodeBase64(key.getBytes());

    SecretKeyFactory desFactory = SecretKeyFactory.getInstance("DES");

    DESKeySpec keyspec = new DESKeySpec(bytes);
    SecretKey k = desFactory.generateSecret(keyspec);

    return k;/*  www.  ja  v a  2  s .c o m*/

}

From source file:org.talend.utils.security.AES.java

public AES() {
    try {//from  www. j a v  a  2s  .c  o  m
        // TDI-28380: Database password in tac db configuration page becomes empty once restart tomcat on Solaris.
        // TDI-30348: Whole tac configuration lost for the passwords.

        Provider p = Security.getProvider("BC");
        KeyGenerator keyGen = KeyGenerator.getInstance(ENCRYPTION_ALGORITHM, p);

        SecureRandom random = SecureRandom.getInstance(RANDOM_SHA1PRNG);
        random.setSeed(KeyValues);
        keyGen.init(128, random);

        Key key = keyGen.generateKey();

        ecipher = Cipher.getInstance(ENCRYPTION_ALGORITHM, p);
        dcipher = Cipher.getInstance(ENCRYPTION_ALGORITHM, p);

        ecipher.init(Cipher.ENCRYPT_MODE, key);
        dcipher.init(Cipher.DECRYPT_MODE, key);
    } catch (Exception e) {
        // log the error to avoid that break GWT service
        log.error(e.getMessage(), e);
    }
}

From source file:com.adaptris.security.password.AesCrypto.java

public String encode(String plainText, String charset) throws PasswordException {
    String result = null;/*from   www . j  a va2s .com*/
    try {
        KeyGenerator kg = KeyGenerator.getInstance(ALG);
        kg.init(KEY_LEN, SecurityUtil.getSecureRandom());
        SecretKey sessionKey = kg.generateKey();
        Cipher dataCipher = Cipher.getInstance(CIPHER);
        dataCipher.init(Cipher.ENCRYPT_MODE, sessionKey);
        byte[] encryptedBody = dataCipher.doFinal(seed(plainText, charset));
        Output output = new Output();
        output.setSessionKey(sessionKey.getEncoded());
        output.setSessionVector(dataCipher.getIV());
        output.setEncryptedData(encryptedBody);
        result = Password.PORTABLE_PASSWORD + output.write();
    } catch (Exception e) {
        throw new PasswordException(e);
    }
    return result;
}