Examples with NAESecureRandom com.ingrian.security.nae.NAESecureRandom used on opensource projects

Example 6 with NAESecureRandom

use of com.ingrian.security.nae.NAESecureRandom in project CipherTrust_Application_Protection by thalescpl-io.

the class FileEncryptionSample method main.

public static void main(String[] args) throws Exception {
    if (args.length != 6) {
        System.err.println("Usage: java FileEncryptionSample user password keyname fileToEncrypt encryptedFile decryptedFile");
        System.exit(-1);
    }
    String username = args[0];
    String password = args[1];
    String keyName = args[2];
    String srcName = args[3];
    String dstName = args[4];
    String decrName = args[5];
    // how many bytes of data to read from the input stream - can be any size
    int BUFSIZE = 512;
    // add Ingrian provider to the list of JCE providers
    Security.addProvider(new IngrianProvider());
    // get the list of all registered JCE providers
    Provider[] providers = Security.getProviders();
    for (Provider provider : providers) {
        System.out.println(provider.getInfo());
    }
    // create NAE Session: pass in Key Manager user name and password
    NAESession session = null;
    try {
        session = NAESession.getSession(username, password.toCharArray());
        // Get SecretKey (just a handle to it, key data does not leave the Key Manager
        NAEKey key = NAEKey.getSecretKey(keyName, session);
        // get IV
        NAESecureRandom rng = new NAESecureRandom(session);
        byte[] iv = new byte[16];
        rng.nextBytes(iv);
        IvParameterSpec ivSpec = new IvParameterSpec(iv);
        // get a cipher
        Cipher encryptCipher = Cipher.getInstance("AES/CBC/PKCS5Padding", "IngrianProvider");
        // initialize cipher to encrypt.
        encryptCipher.init(Cipher.ENCRYPT_MODE, key, ivSpec);
        // create CipherInputStream that will read in data from file and encrypt it
        CipherInputStream cis = new CipherInputStream(new FileInputStream(srcName), encryptCipher);
        FileOutputStream fos = new FileOutputStream(dstName);
        // Read the file as blocks of data
        byte[] inbuf = new byte[BUFSIZE];
        for (int inlen = 0; (inlen = cis.read(inbuf)) != -1; ) {
            fos.write(inbuf, 0, inlen);
        }
        System.out.println("Done encrypting file.  Closing files");
        cis.close();
        fos.close();
        Cipher decryptCipher = Cipher.getInstance("AES/CBC/PKCS5Padding", "IngrianProvider");
        // initialize cipher to decrypt.
        decryptCipher.init(Cipher.DECRYPT_MODE, key, ivSpec);
        // create CipherInputStream that will read in data from file and decrypt it
        cis = new CipherInputStream(new FileInputStream(dstName), decryptCipher);
        fos = new FileOutputStream(decrName);
        for (int inlen = 0; (inlen = cis.read(inbuf)) != -1; ) {
            fos.write(inbuf, 0, inlen);
        }
        System.out.println("Done decrypting file.  Closing files");
        cis.close();
        fos.close();
    } catch (Exception e) {
        System.out.println("The Cause is " + e.getMessage() + ".");
        throw e;
    } finally {
        if (session != null) {
            session.closeSession();
        }
    }
}