Examples with DSAPrivateKey java.security.interfaces.DSAPrivateKey used on opensource projects

Example 41 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project remote-desktop-clients by iiordanov.

the class PubkeyUtils method recoverKeyPair.

public static KeyPair recoverKeyPair(byte[] encoded) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchProviderException {
    KeySpec privKeySpec = new PKCS8EncodedKeySpec(encoded);
    KeySpec pubKeySpec;
    PrivateKey priv;
    PublicKey pub;
    KeyFactory kf;
    try {
        kf = KeyFactory.getInstance(PubkeyDatabase.KEY_TYPE_RSA, "BC");
        priv = kf.generatePrivate(privKeySpec);
        pubKeySpec = new RSAPublicKeySpec(((RSAPrivateCrtKey) priv).getModulus(), ((RSAPrivateCrtKey) priv).getPublicExponent());
        pub = kf.generatePublic(pubKeySpec);
    } catch (ClassCastException e) {
        kf = KeyFactory.getInstance(PubkeyDatabase.KEY_TYPE_DSA, "BC");
        priv = kf.generatePrivate(privKeySpec);
        DSAParams params = ((DSAPrivateKey) priv).getParams();
        // Calculate public key Y
        BigInteger y = params.getG().modPow(((DSAPrivateKey) priv).getX(), params.getP());
        pubKeySpec = new DSAPublicKeySpec(y, params.getP(), params.getQ(), params.getG());
        pub = kf.generatePublic(pubKeySpec);
    }
    return new KeyPair(pub, priv);
}

Example 42 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project keystore-explorer by kaikramer.

the class KeyStoreState method isEntryPrivateKeyEqual.

protected boolean isEntryPrivateKeyEqual(KeyStoreState targetState, String alias, Password password) throws GeneralSecurityException {
    Key currentKey = keyStore.getKey(alias, password.toCharArray());
    Key targetKey = targetState.getKeyStore().getKey(alias, password.toCharArray());
    // JDKDSAPrivateKey has no equals method defined
    if ((currentKey instanceof JDKDSAPrivateKey) || (targetKey instanceof JDKDSAPrivateKey)) {
        DSAPrivateKey currentDsaKey = (DSAPrivateKey) currentKey;
        DSAPrivateKey targetDsaKey = (DSAPrivateKey) targetKey;
        return currentDsaKey.getX().equals(targetDsaKey.getX()) && currentDsaKey.getParams().getG().equals(targetDsaKey.getParams().getG()) && currentDsaKey.getParams().getP().equals(targetDsaKey.getParams().getP()) && currentDsaKey.getParams().getQ().equals(targetDsaKey.getParams().getQ());
    } else {
        return currentKey.equals(targetKey);
    }
}

Example 43 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project keystore-explorer by kaikramer.

the class MsPvkUtil method blobToDsaPrivateKey.

private static DSAPrivateKey blobToDsaPrivateKey(byte[] dsaPrivateKeyBlob) throws CryptoException {
    try {
        ByteBuffer bb = ByteBuffer.wrap(dsaPrivateKeyBlob);
        bb.order(ByteOrder.LITTLE_ENDIAN);
        // Get each blob field
        // dsspubkey.magic
        long magic = UnsignedUtil.getInt(bb);
        // Check magic field is valid
        if (magic != DSS_PRIV_MAGIC) {
            throw new CryptoException(MessageFormat.format(res.getString("InvalidDsaMagicField.exception.message"), Long.toHexString(magic), Long.toHexString(DSS_PRIV_MAGIC)));
        }
        // dsspubkey.bitlen
        long bitLength = UnsignedUtil.getInt(bb);
        // modulus
        BigInteger p = readBigInteger(bb, (int) (bitLength / 8));
        // prime
        BigInteger q = readBigInteger(bb, 20);
        // generator
        BigInteger g = readBigInteger(bb, (int) (bitLength / 8));
        // secret exponent
        BigInteger x = readBigInteger(bb, 20);
        // Ignore 24 bytes of dssseed (only applicable to public keys)
        for (int i = 0; i < 24; i++) {
            bb.get();
        }
        DSAPrivateKeySpec dsaPrivateKeySpec = new DSAPrivateKeySpec(x, p, q, g);
        KeyFactory keyFactory = KeyFactory.getInstance("DSA");
        return (DSAPrivateKey) keyFactory.generatePrivate(dsaPrivateKeySpec);
    } catch (IOException ex) {
        throw new CryptoException(res.getString("NoConvertBlobToDsaKey.exception.message"), ex);
    } catch (GeneralSecurityException ex) {
        throw new CryptoException(res.getString("NoConvertBlobToDsaKey.exception.message"), ex);
    }
}

Example 44 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project keystore-explorer by kaikramer.

the class MsPvkUtil method getEncryptedInternal.

private static byte[] getEncryptedInternal(PrivateKey privateKey, int keyType, Password password, boolean strong) throws CryptoException {
    try {
        // Write PVK to a byte buffer set up to write little endian
        ByteBuffer bb = ByteBuffer.wrap(new byte[PVK_BUFFER_LENGTH]);
        bb.order(ByteOrder.LITTLE_ENDIAN);
        // Write magic number, reserved and and key type fields
        writeReservedMagicKeyType(bb, keyType);
        // Get password as bytes
        byte[] passwordBytes = new String(password.toCharArray()).getBytes();
        // Generate salt for encryption
        byte[] salt = generate16ByteSalt();
        // Concatenate the salt and password
        byte[] saltAndPassword = new byte[salt.length + passwordBytes.length];
        System.arraycopy(salt, 0, saltAndPassword, 0, salt.length);
        System.arraycopy(passwordBytes, 0, saltAndPassword, salt.length, passwordBytes.length);
        // Digest the salt and password to create the encryption key
        MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
        byte[] key = messageDigest.digest(saltAndPassword);
        // Get private key blob
        byte[] privateKeyBlob = null;
        if (privateKey instanceof RSAPrivateCrtKey) {
            privateKeyBlob = rsaPrivateKeyToBlob((RSAPrivateCrtKey) privateKey);
        } else {
            privateKeyBlob = dsaPrivateKeyToBlob((DSAPrivateKey) privateKey);
        }
        // Encrypt private key blob
        byte[] encryptedPrivateKeyBlob = null;
        if (strong) {
            // Strong version uses all 16 bytes of the key
            byte[] strongKey = new byte[16];
            System.arraycopy(key, 0, strongKey, 0, strongKey.length);
            encryptedPrivateKeyBlob = encryptPrivateKeyBlob(privateKeyBlob, strongKey);
        } else {
            // The weak version uses only 5 bytes of the key followed by 11 zero bytes
            byte[] weakKey = new byte[16];
            System.arraycopy(key, 0, weakKey, 0, 5);
            for (int i = 5; i < weakKey.length; i++) {
                weakKey[i] = 0;
            }
            encryptedPrivateKeyBlob = encryptPrivateKeyBlob(privateKeyBlob, weakKey);
        }
        // Write type field - encrypted
        UnsignedUtil.putInt(bb, PVK_ENCRYPTED);
        // Write salt length field
        UnsignedUtil.putInt(bb, salt.length);
        // Write key length field - length of the blob plus length blob header
        int keyLength = encryptedPrivateKeyBlob.length + BLOB_HEADER_LENGTH;
        UnsignedUtil.putInt(bb, keyLength);
        // Write salt
        bb.put(salt);
        // Write private key blob header
        writePrivateKeyBlobHeader(bb, keyType, privateKey);
        // Write blob
        bb.put(encryptedPrivateKeyBlob);
        byte[] encryptedPvk = getBufferBytes(bb);
        return encryptedPvk;
    } catch (IOException ex) {
        throw new CryptoException(res.getString("NoGetMsPvk.exception.message"), ex);
    } catch (NoSuchAlgorithmException ex) {
        throw new CryptoException(res.getString("NoGetMsPvk.exception.message"), ex);
    }
}

Example 45 with DSAPrivateKey

use of java.security.interfaces.DSAPrivateKey in project keystore-explorer by kaikramer.

the class DProperties method createPrivateKeyNodes.

private void createPrivateKeyNodes(DefaultMutableTreeNode parentNode, PrivateKey privateKey) throws CryptoException {
    DefaultMutableTreeNode privateKeyNode = new DefaultMutableTreeNode(res.getString("DProperties.properties.PrivateKey"));
    parentNode.add(privateKeyNode);
    currentState.getKeyStore();
    KeyInfo keyInfo = KeyPairUtil.getKeyInfo(privateKey);
    String keyAlg = keyInfo.getAlgorithm();
    privateKeyNode.add(new DefaultMutableTreeNode(MessageFormat.format(res.getString("DProperties.properties.Algorithm"), keyAlg)));
    Integer keySize = keyInfo.getSize();
    if (keySize != null) {
        privateKeyNode.add(new DefaultMutableTreeNode(MessageFormat.format(res.getString("DProperties.properties.KeySize"), "" + keyInfo.getSize())));
    } else {
        privateKeyNode.add(new DefaultMutableTreeNode(MessageFormat.format(res.getString("DProperties.properties.KeySize"), "?")));
    }
    String keyFormat = privateKey.getFormat();
    privateKeyNode.add(new DefaultMutableTreeNode(MessageFormat.format(res.getString("DProperties.properties.Format"), keyFormat)));
    String keyEncoded;
    byte[] encodedKey = privateKey.getEncoded();
    if (encodedKey != null) {
        keyEncoded = "0x" + new BigInteger(1, privateKey.getEncoded()).toString(16).toUpperCase();
    } else {
        keyEncoded = "*****";
    }
    privateKeyNode.add(new DefaultMutableTreeNode(MessageFormat.format(res.getString("DProperties.properties.Encoded"), keyEncoded)));
    if (privateKey instanceof RSAPrivateCrtKey) {
        RSAPrivateCrtKey rsaPrivateKey = (RSAPrivateCrtKey) privateKey;
        String publicExponent = MessageFormat.format(res.getString("DProperties.properties.private.rsa.PublicExponent"), "0x" + rsaPrivateKey.getPublicExponent().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(publicExponent));
        String modulus = MessageFormat.format(res.getString("DProperties.properties.private.rsa.Modulus"), "0x" + rsaPrivateKey.getModulus().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(modulus));
        String primeP = MessageFormat.format(res.getString("DProperties.properties.private.rsa.PrimeP"), "0x" + rsaPrivateKey.getPrimeP().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(primeP));
        String primeQ = MessageFormat.format(res.getString("DProperties.properties.private.rsa.PrimeQ"), "0x" + rsaPrivateKey.getPrimeQ().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(primeQ));
        String primeExponentP = MessageFormat.format(res.getString("DProperties.properties.private.rsa.PrimeExponentP"), "0x" + rsaPrivateKey.getPrimeExponentP().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(primeExponentP));
        String primeExponentQ = MessageFormat.format(res.getString("DProperties.properties.private.rsa.PrimeExponentQ"), "0x" + rsaPrivateKey.getPrimeExponentQ().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(primeExponentQ));
        String crtCoefficient = MessageFormat.format(res.getString("DProperties.properties.private.rsa.CrtCoefficient"), "0x" + rsaPrivateKey.getCrtCoefficient().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(crtCoefficient));
        String privateExponent = MessageFormat.format(res.getString("DProperties.properties.private.rsa.PrivateExponent"), "0x" + rsaPrivateKey.getPrivateExponent().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(privateExponent));
    } else if (privateKey instanceof DSAPrivateKey) {
        DSAPrivateKey dsaPrivateKey = (DSAPrivateKey) privateKey;
        DSAParams dsaParams = dsaPrivateKey.getParams();
        String primeModulusP = MessageFormat.format(res.getString("DProperties.properties.private.dsa.PrimeModulusP"), "0x" + dsaParams.getP().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(primeModulusP));
        String primeQ = MessageFormat.format(res.getString("DProperties.properties.private.dsa.PrimeQ"), "0x" + dsaParams.getQ().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(primeQ));
        String generatorG = MessageFormat.format(res.getString("DProperties.properties.private.dsa.GeneratorG"), "0x" + dsaParams.getG().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(generatorG));
        String secretExponentX = MessageFormat.format(res.getString("DProperties.properties.private.dsa.SecretExponentX"), "0x" + dsaPrivateKey.getX().toString(16).toUpperCase());
        privateKeyNode.add(new DefaultMutableTreeNode(secretExponentX));
    }
}