Package javax.crypto.spec

Examples of javax.crypto.spec.PBEKeySpec

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     * @return the generated key.
     */
    private SecretKey generateAESKey(String privateKey, String salt) {
        try {
            byte[] raw = Hex.decodeHex(salt.toCharArray());
            KeySpec spec = new PBEKeySpec(privateKey.toCharArray(), raw, iterationCount, keySize);
            SecretKeyFactory factory = SecretKeyFactory.getInstance(PBKDF_2_WITH_HMAC_SHA_1);
            return new SecretKeySpec(factory.generateSecret(spec).getEncoded(), AES_ECB_ALGORITHM);
        } catch (DecoderException e) {
            throw new IllegalStateException(e);
        } catch ( NoSuchAlgorithmException e) {
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     *
     */
    public String createPasswordKey(char[] password, byte[] salt, int iterations)
            throws GeneralSecurityException {
        if (hashAlgorithm != null) {
            PBEKeySpec passwordKeySpec = new PBEKeySpec(password, salt, iterations, 256);
            SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance(hashAlgorithm);
            SecretKey passwordKey = secretKeyFactory.generateSecret(passwordKeySpec);
            passwordKeySpec.clearPassword();
            return BinTools.bin2hex(passwordKey.getEncoded());
        } else {
            PBKDF2Parameters params = new PBKDF2Parameters("HmacSHA1", "ISO-8859-1", salt, iterations);
            PBKDF2 pbkdf2 = new PBKDF2Engine(params);
            return BinTools.bin2hex(pbkdf2.deriveKey(new String(password)));
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    return sr.generateSeed(saltSize);
  }

  private Cipher buildCipher(String passphrase, byte[] salt, int mode) throws InvalidKeySpecException,
      NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException {
    KeySpec keySpec = new PBEKeySpec(passphrase.toCharArray());
    SecretKey key = SecretKeyFactory.getInstance(KEY_ALGORITHM, bouncyCastleProvider).generateSecret(keySpec);

    Cipher cipher = Cipher.getInstance(KEY_ALGORITHM, bouncyCastleProvider);
    PBEParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);
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        String              provider)
        throws Exception
    {
        SecretKeyFactory keyFact = SecretKeyFactory.getInstance(oid.getId(), provider);
        PBEParameterSpec defParams = new PBEParameterSpec(salt, itCount);
        PBEKeySpec pbeSpec = new PBEKeySpec(password);
        SecretKey key = keyFact.generateSecret(pbeSpec);

        Mac mac = Mac.getInstance(oid.getId(), provider);
        mac.init(key, defParams);
        mac.update(data);
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        int     iterationCount)
        throws IOException
    {
        try
        {
            PBEKeySpec          pbeSpec = new PBEKeySpec(password);
            SecretKeyFactory    keyFact = SecretKeyFactory.getInstance(algorithm, BouncyCastleProvider.PROVIDER_NAME);
            PBEParameterSpec    defParams = new PBEParameterSpec(salt, iterationCount);

            Cipher cipher = Cipher.getInstance(algorithm, BouncyCastleProvider.PROVIDER_NAME);
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        KeySpec keySpec)
        throws InvalidKeySpecException
    {
        if (keySpec instanceof PBEKeySpec)
        {
            PBEKeySpec pbeSpec = (PBEKeySpec)keySpec;
            CipherParameters param;

            if (pbeSpec.getSalt() == null)
            {
                return new BCPBEKey(this.algName, this.algOid, scheme, digest, keySize, ivSize, pbeSpec, null);
            }

            if (forCipher)
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            KeySpec keySpec)
            throws InvalidKeySpecException
        {
            if (keySpec instanceof PBEKeySpec)
            {
                PBEKeySpec pbeSpec = (PBEKeySpec)keySpec;

                if (pbeSpec.getSalt() == null)
                {
                    throw new InvalidKeySpecException("missing required salt");
                }

                if (pbeSpec.getIterationCount() <= 0)
                {
                    throw new InvalidKeySpecException("positive iteration count required: "
                        + pbeSpec.getIterationCount());
                }

                if (pbeSpec.getKeyLength() <= 0)
                {
                    throw new InvalidKeySpecException("positive key length required: "
                        + pbeSpec.getKeyLength());
                }

                if (pbeSpec.getPassword().length == 0)
                {
                    throw new IllegalArgumentException("password empty");
                }

                int digest = SHA1;
                int keySize = pbeSpec.getKeyLength();
                int ivSize = -1;    // JDK 1,2 and earlier does not understand simplified version.
                CipherParameters param = PBE.Util.makePBEMacParameters(pbeSpec, scheme, digest, keySize);

                return new BCPBEKey(this.algName, this.algOid, scheme, digest, keySize, ivSize, pbeSpec, param);
            }
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            KeySpec keySpec)
        throws InvalidKeySpecException
        {
            if (keySpec instanceof PBEKeySpec)
            {
                PBEKeySpec pbeSpec = (PBEKeySpec)keySpec;
                CipherParameters param;

                if (pbeSpec.getSalt() == null)
                {
                    return new BCPBEKey(this.algName, this.algOid, scheme, digest, keySize, ivSize, pbeSpec, null);
                }

                if (forCipher)
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        {
            if (algorithm.on(PKCSObjectIdentifiers.pkcs_12PbeIds))
            {
                PKCS12PBEParams pbeParams = PKCS12PBEParams.getInstance(algId.getParameters());

                PBEKeySpec pbeSpec = new PBEKeySpec(password);
                PrivateKey out;

                SecretKeyFactory keyFact = SecretKeyFactory.getInstance(
                    algorithm.getId(), bcProvider);
                PBEParameterSpec defParams = new PBEParameterSpec(
                    pbeParams.getIV(),
                    pbeParams.getIterations().intValue());

                SecretKey k = keyFact.generateSecret(pbeSpec);

                ((BCPBEKey)k).setTryWrongPKCS12Zero(wrongPKCS12Zero);

                Cipher cipher = Cipher.getInstance(algorithm.getId(), bcProvider);

                cipher.init(Cipher.UNWRAP_MODE, k, defParams);

                // we pass "" as the key algorithm type as it is unknown at this point
                return (PrivateKey)cipher.unwrap(data, "", Cipher.PRIVATE_KEY);
            }
            else if (algorithm.equals(PKCSObjectIdentifiers.id_PBES2))
            {
                PBES2Parameters alg = PBES2Parameters.getInstance(algId.getParameters());
                PBKDF2Params func = PBKDF2Params.getInstance(alg.getKeyDerivationFunc().getParameters());

                SecretKeyFactory keyFact = SecretKeyFactory.getInstance(alg.getKeyDerivationFunc().getAlgorithm().getId(), bcProvider);

                SecretKey k = keyFact.generateSecret(new PBEKeySpec(password, func.getSalt(), func.getIterationCount().intValue(), SecretKeyUtil.getKeySize(alg.getEncryptionScheme().getAlgorithm())));

                Cipher cipher = Cipher.getInstance(alg.getEncryptionScheme().getAlgorithm().getId(), bcProvider);

                cipher.init(Cipher.UNWRAP_MODE, k, new IvParameterSpec(ASN1OctetString.getInstance(alg.getEncryptionScheme().getParameters()).getOctets()));
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        Key key,
        PKCS12PBEParams pbeParams,
        char[] password)
        throws IOException
    {
        PBEKeySpec pbeSpec = new PBEKeySpec(password);
        byte[] out;

        try
        {
            SecretKeyFactory keyFact = SecretKeyFactory.getInstance(
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