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:cn.ctyun.amazonaws.services.s3.internal.crypto.EncryptionUtils.java

/**
 * Generates a one-time use Symmetric Key on-the-fly for use in envelope encryption.
 *///w  w w.j a  v  a 2 s  . c  o m
public static SecretKey generateOneTimeUseSymmetricKey() {
    KeyGenerator generator;
    try {
        generator = KeyGenerator.getInstance(JceEncryptionConstants.SYMMETRIC_KEY_ALGORITHM);
        generator.init(JceEncryptionConstants.SYMMETRIC_KEY_LENGTH, new SecureRandom());
        return generator.generateKey();
    } catch (NoSuchAlgorithmException e) {
        throw new AmazonClientException("Unable to generate envelope symmetric key:" + e.getMessage(), e);
    }
}

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From source file:pt.lunacloud.services.storage.internal.crypto.EncryptionUtils.java

/**
 * Generates a one-time use Symmetric Key on-the-fly for use in envelope encryption.
 *//*from  w  ww .  ja  va  2 s . co m*/
public static SecretKey generateOneTimeUseSymmetricKey() {
    KeyGenerator generator;
    try {
        generator = KeyGenerator.getInstance(JceEncryptionConstants.SYMMETRIC_KEY_ALGORITHM);
        generator.init(JceEncryptionConstants.SYMMETRIC_KEY_LENGTH, new SecureRandom());
        return generator.generateKey();
    } catch (NoSuchAlgorithmException e) {
        throw new LunacloudClientException("Unable to generate envelope symmetric key:" + e.getMessage(), e);
    }
}

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From source file:ezbake.security.service.sync.LocksmithKeySupplierTest.java

String getAESKey() throws NoSuchAlgorithmException {
    KeyGenerator keygenerator = KeyGenerator.getInstance("AES");
    keygenerator.init(256);/*from  w w  w . jav a 2s.c  o m*/
    return Base64.encodeBase64String(keygenerator.generateKey().getEncoded());
}

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From source file:com.demandware.vulnapp.challenge.impl.ECBOracleChallenge.java

/**
 * Generate some key such that we don't know the key value so noone can just
 * use the key/*from   www  .j  a va2  s.  c  o m*/
 */
private SecretKey generateKey() throws NoSuchAlgorithmException {
    KeyGenerator keyGen = KeyGenerator.getInstance(this.keyType);
    return keyGen.generateKey();
}

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From source file:info.fcrp.keepitsafe.bean.CryptBeanTest.java

@Test
public void symetric() throws NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException,
        InvalidKeyException, IllegalBlockSizeException, BadPaddingException {

    KeyGenerator kg = KeyGenerator.getInstance("AES");
    kg.init(256, new SecureRandom());
    Key k = kg.generateKey();

    Cipher c = Cipher.getInstance("AES");
    String plain = "plain";
    byte[] plainBytes = plain.getBytes();

    c.init(Cipher.ENCRYPT_MODE, k);
    c.update(plainBytes);//from  w ww  . j a v a2  s. co  m

    byte[] encBytes = c.doFinal();
    String enc = Base64.encodeBase64String(encBytes);
    assertNotSame(plain, enc);

    c.init(Cipher.DECRYPT_MODE, k);
    c.update(encBytes);
    byte[] decBytes = c.doFinal();
    String dec = new String(decBytes);

    assertEquals(plain, dec);
}

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From source file:com.evolveum.midpoint.init.ConfigurableProtectorFactory.java

public void init() {
    Configuration config = configuration.getConfiguration(PROTECTOR_CONFIGURATION);
    protectorConfig = new ProtectorConfiguration(config);

    //Extract file if not exists
    if (config.getString("midpoint.home") == null) {
        return;//from w  w w  .  ja va 2  s.  c om
    }

    File ks = new File(protectorConfig.getKeyStorePath());
    if (ks.exists()) {
        return;
    }

    //todo improve
    FileOutputStream fos = null;
    try {
        KeyStore keystore = KeyStore.getInstance("jceks");
        char[] password = "changeit".toCharArray();

        keystore.load(null, password);

        KeyGenerator keyGen = KeyGenerator.getInstance("AES");
        keyGen.init(128);
        SecretKey secretKey = keyGen.generateKey();

        keystore.setKeyEntry("default", secretKey, "midpoint".toCharArray(), null);

        fos = new FileOutputStream(protectorConfig.getKeyStorePath());
        keystore.store(fos, password);
        fos.close();
    } catch (Exception ex) {
        throw new SystemException("Couldn't generate keystore, reason: " + ex.getMessage(), ex);
    } finally {
        IOUtils.closeQuietly(fos);
    }
}

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From source file:org.wildfly.security.keystore.ModifyTrackingKeyStoreTest.java

private SecretKey getSecretKey() throws GeneralSecurityException {
    KeyGenerator keyGen = KeyGenerator.getInstance("AES");
    keyGen.init(128);//from   w  ww. jav a  2 s .  c  o m

    return keyGen.generateKey();
}

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From source file:io.kodokojo.config.module.SecurityModule.java

private SecretKey generateAesKey() {
    try {/*w ww  .  j  a  v a 2  s.  c o m*/
        KeyGenerator kg = KeyGenerator.getInstance("AES");
        return kg.generateKey();
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("Unable to get key generator for AES", e);
    }
}

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From source file:com.data.pack.Util.java

public static void copyFile(InputStream in, OutputStream out, int flag) throws IOException {
    byte[] buffer = new byte[1024];
    int read;/*from ww w.  j a va 2  s.  c o  m*/

    try {

        Cipher encipher = null;
        try {
            encipher = Cipher.getInstance("AES");
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        Cipher decipher = null;
        try {
            decipher = Cipher.getInstance("AES");
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        KeyGenerator kgen = null;
        try {
            kgen = KeyGenerator.getInstance("AES");
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        byte[] keyStart = "fitnesSbridge".getBytes();
        SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
        sr.setSeed(keyStart);
        kgen.init(128, sr); // 192 and 256 bits may not be available
        SecretKey skey = kgen.generateKey();

        // byte key[] =
        // {0x00,0x32,0x22,0x11,0x00,0x00,0x00,0x00,0x00,0x23,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
        skey = kgen.generateKey();
        // Lgo
        try {
            encipher.init(Cipher.ENCRYPT_MODE, skey);
        } catch (InvalidKeyException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        CipherInputStream cis = new CipherInputStream(in, encipher);
        try {
            decipher.init(Cipher.DECRYPT_MODE, skey);
        } catch (InvalidKeyException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        CipherOutputStream cos = new CipherOutputStream(out, decipher);

        try {

            if (flag == 2) {
                cos = new CipherOutputStream(out, encipher);
            } else {
                cos = new CipherOutputStream(out, decipher);
            }
            while ((read = in.read()) != -1) {
                cos.write(read);
                cos.flush();
            }

            cos.flush();
            cos.close();
            in.close();

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try {
            out.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    } catch (Exception e) {
        // TODO: handle exception
    }

    //
    // byte[] keyStart = "this is a key".getBytes();
    // KeyGenerator kgen = KeyGenerator.getInstance("AES");
    // SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");
    // sr.setSeed(keyStart);
    // kgen.init(128, sr); // 192 and 256 bits may not be available
    // SecretKey skey = kgen.generateKey();
    // byte[] key = skey.getEncoded();
    //
    //
    // byte[] b = baos.toByteArray();
    // while ((read = in.read(buffer)) != -1) {
    //
    // // decrypt
    // byte[] decryptedData = Util.decrypt(key,buffer);
    // out.write(decryptedData, 0, read);
    // }
    // } catch (NoSuchAlgorithmException e) {
    // // TODO Auto-generated catch block
    // e.printStackTrace();
    // }
    // catch (Exception e) {
    // // TODO: handle exception
    // }
    //
}

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From source file:test.unit.org.owasp.webscarab.plugin.saml.SamlTest.java

@Test
public void testEncryptionAES() throws Exception {
    KeyGenerator keygen = KeyGenerator.getInstance("AES");
    keygen.init(128);//w  w  w  . ja  v  a2  s  . c o  m
    SecretKey secretKey = keygen.generateKey();

    LOG.debug("secret key algo: " + secretKey.getAlgorithm());
    LOG.debug("secret key format: " + secretKey.getFormat());

    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, secretKey);
    LOG.debug("cipher provider: " + cipher.getProvider().getName());
    byte[] result = cipher.doFinal("hello world".getBytes());
    assertNotNull(result);

    byte[] encodedSecretKey = secretKey.getEncoded();
    LOG.debug("encoded secret key size: " + encodedSecretKey.length * 8);

    // decrypt
    cipher = Cipher.getInstance("AES");
    SecretKeySpec secretKeySpec = new SecretKeySpec(encodedSecretKey, "AES");
    cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
    byte[] decryptedResult = cipher.doFinal(result);
    assertEquals("hello world", new String(decryptedResult));
}

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