Example usage for org.bouncycastle.crypto.generators PKCS5S2ParametersGenerator generateDerivedParameters

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.generators PKCS5S2ParametersGenerator generateDerivedParameters.

Prototype

public CipherParameters generateDerivedParameters(int keySize) 

Source Link

Document

Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with.

Usage

From source file:com.github.horrorho.inflatabledonkey.cache.StreamCryptorPBKDF2.java

License:Open Source License

@Override
public byte[] apply(byte[] password, byte[] salt) {
    PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator(digests.get());
    generator.init(password, salt, iterations);
    return ((KeyParameter) generator.generateDerivedParameters(keyLength * 8)).getKey();
}

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From source file:com.github.horrorho.inflatabledonkey.crypto.PBKDF2.java

License:Open Source License

public static byte[] generate(Digest digest, byte[] password, byte[] salt, int iterations, int lengthBits) {
    PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator(digest);
    generator.init(password, salt, iterations);
    return ((KeyParameter) generator.generateDerivedParameters(lengthBits)).getKey();
}

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From source file:de.burlov.amazon.s3.dirsync.DirSync.java

License:Apache License

private byte[] generatePbeKey(char[] password) {
    PKCS5S2ParametersGenerator pgen = new PKCS5S2ParametersGenerator();
    pgen.init(PKCS5S2ParametersGenerator.PKCS5PasswordToBytes(password), salt, ITERATION_COUNT);
    CipherParameters params = pgen.generateDerivedParameters(256);
    byte[] ret = ((KeyParameter) params).getKey();
    return ret;//from  www  .  jav a2  s  . c  om
}

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From source file:foam.util.Password.java

License:Open Source License

/**
 * Helper function to hash the password that takes in the salt, key size, and number of iterations
 * @param password password to has//from w  ww  .  jav a 2s. c  om
 * @param salt random salt
 * @param keySize key size
 * @param iterations number of iterations
 * @return hashed password containing the salt. Format salt:hash
 */
private static String hash(String password, byte[] salt, int keySize, int iterations) {
    PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator();
    generator.init(PBEParametersGenerator.PKCS5PasswordToBytes(password.toCharArray()), salt, iterations);
    byte[] key = ((KeyParameter) generator.generateDerivedParameters(keySize)).getKey();
    return String.format("%s:%s", encode(salt), encode(key));
}

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From source file:net.nharyes.secrete.curve.Curve25519PrivateKey.java

License:Open Source License

private static byte[] deriveKey(char[] password, byte[] salt) throws UnsupportedEncodingException {

    // generate key using PBKDF2
    PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA512Digest());
    gen.init(new String(password).getBytes("UTF-8"), salt, PBKDF2_ITERATIONS);

    return ((KeyParameter) gen.generateDerivedParameters(AES_KEY_SIZE_BITS)).getKey();
}

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From source file:net.nharyes.secrete.curve.TestCurve25519PrivateKey.java

License:Open Source License

@Test
public void testPBKDF() throws Exception {

    Security.addProvider(new BouncyCastleProvider());

    Random r = new Random();

    char[] cPassword = "ThePa55wordToU5e".toCharArray();
    byte[] salt = new byte[64];
    r.nextBytes(salt);/*w w  w  .ja v a2s  .  c om*/

    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    KeySpec keyspec = new PBEKeySpec(cPassword, salt, 5000, 256);
    Key key = factory.generateSecret(keyspec);
    byte[] k1 = key.getEncoded();

    factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1", "BC");
    key = factory.generateSecret(keyspec);
    byte[] k2 = key.getEncoded();

    assertArrayEquals(k1, k2);

    PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(new SHA1Digest());
    gen.init(new String(cPassword).getBytes("UTF-8"), salt, 5000);
    byte[] k3 = ((KeyParameter) gen.generateDerivedParameters(256)).getKey();

    assertArrayEquals(k1, k3);
    assertArrayEquals(k2, k3);
}

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From source file:org.albertschmitt.crypto.AESService.java

License:Open Source License

/**
 * Generate an AES key. A key generated by this method would typically be
 * encrypted using RSA and sent to the recipient along with data that was
 * encrypted with the key. The recipient would then decrypt the key using
 * RSA then use the key to decrypt the data.
 *
 * @see #getAesKey()//w  w w .j  a va  2 s  .c  o m
 */
public void generateKey() {
    PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator();

    SecureRandom random = new SecureRandom();
    byte[] password = new byte[SALT_SIZE];
    random.nextBytes(password);

    generator.init(password, generateSalt(), 20000);
    aes_key = (KeyParameter) generator.generateDerivedParameters(keysize.getKeySize());
}

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From source file:org.albertschmitt.crypto.AESService.java

License:Open Source License

/**
 * Generate an AES key using a given password and salt.
 *
 * @param password The password to be used to create the key.
 * @param salt The 32 byte long array to be used to create the key.
 * @see #generateSalt()//from   w w w. ja va  2s  . c  o  m
 * @see #getAesKey()
 */
public void generateKey(char[] password, byte[] salt) {
    PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator();

    byte[] passwordBytes = PKCS5S2ParametersGenerator.PKCS5PasswordToUTF8Bytes(password);
    generator.init(passwordBytes, salt, 20000);
    aes_key = (KeyParameter) generator.generateDerivedParameters(keysize.getKeySize());
}

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From source file:org.apache.cloudstack.server.auth.PBKDF2UserAuthenticator.java

License:Apache License

public String encode(String password, byte[] salt, int rounds)
        throws UnsupportedEncodingException, NoSuchAlgorithmException, InvalidKeySpecException {
    PKCS5S2ParametersGenerator generator = new PKCS5S2ParametersGenerator();
    generator.init(PBEParametersGenerator.PKCS5PasswordToBytes(password.toCharArray()), salt, rounds);
    return format("%s:%s:%d", encode(salt),
            encode(((KeyParameter) generator.generateDerivedParameters(s_keylen)).getKey()), rounds);
}

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From source file:org.apache.cxf.rs.security.jose.jwe.PbesHmacAesWrapKeyEncryptionAlgorithm.java

License:Apache License

static byte[] createDerivedKey(String keyAlgoJwt, int keySize, byte[] password, byte[] saltInput,
        int pbesCount) {
    byte[] saltValue = createSaltValue(keyAlgoJwt, saltInput);
    Digest digest = null;/*  w w  w . ja v a  2s. c o m*/
    int macSigSize = PBES_HMAC_MAP.get(keyAlgoJwt);
    if (macSigSize == 256) {
        digest = new SHA256Digest();
    } else if (macSigSize == 384) {
        digest = new SHA384Digest();
    } else {
        digest = new SHA512Digest();
    }
    PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator(digest);
    gen.init(password, saltValue, pbesCount);
    return ((KeyParameter) gen.generateDerivedParameters(keySize * 8)).getKey();
}

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