Examples of DSAParams

java.security.interfaces.DSAParams
Interface to a DSA-specific set of key parameters, which defines a DSA key family. DSA (Digital Signature Algorithm) is defined in NIST's FIPS-186. @see DSAKey @see java.security.Key @see java.security.Signature @version 1.21 05/11/17 @author Benjamin Renaud @author Josh Bloch

Examples of java.security.interfaces.DSAParams






    private void checkPublicIntegers(DSAPublicKey pk) {


        DSAParams params = pk.getParams();


        assertEquals("failure for 'pk.getY().compareTo(publicY)'", 0, pk.getY()
                .compareTo(publicY));


        assertEquals("failure for 'params.getP().compareTo(publicP)'", 0,
                params.getP().compareTo(publicP));
        assertEquals("failure for 'params.getQ().compareTo(publicQ)'", 0,
                params.getQ().compareTo(publicQ));
        assertEquals("failure for 'params.getG().compareTo(publicG)'", 0,
                params.getG().compareTo(publicG));
    }

View Full Code Here

Examples of java.security.interfaces.DSAParams

    }




    private void checkPrivateIntegers(DSAPrivateKey pk) {


        DSAParams params = pk.getParams();


        assertEquals("failure for 'pk.getX().compareTo(privateX)'", 0, pk
                .getX().compareTo(privateX));


        assertEquals("failure for 'params.getP().compareTo(privateP)'", 0,
                params.getP().compareTo(privateP));
        assertEquals("failure for 'params.getQ().compareTo(privateQ)'", 0,
                params.getQ().compareTo(privateQ));
        assertEquals("failure for 'params.getG().compareTo(privateG)'", 0,
                params.getG().compareTo(privateG));
    }

View Full Code Here

Examples of java.security.interfaces.DSAParams

        // create DSAParams
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("DSA");
        keyPairGenerator.initialize(1024);
        DSAPublicKey key = (DSAPublicKey) keyPairGenerator.genKeyPair()
                .getPublic();
        DSAParams params = key.getParams();


        KeyPairGenerator keyPair = KeyPairGenerator.getInstance("DSA");
        keyPair.initialize(new DSAParameterSpec(params.getP(), params.getQ(),
                params.getG()), new SecureRandom());
    }

View Full Code Here

Examples of java.security.interfaces.DSAParams


    protected static boolean areKeyEquals(PublicKey k1, PublicKey k2) {
        if (k1 instanceof DSAPublicKey && k2 instanceof DSAPublicKey) {
            DSAPublicKey d1 = (DSAPublicKey) k1;
            DSAPublicKey d2 = (DSAPublicKey) k2;
            DSAParams p1 = d1.getParams();
            DSAParams p2 = d2.getParams();
            return d1.getY().equals(d2.getY())
                        && p1.getG().equals(p2.getG())
                        && p1.getP().equals(p2.getP())
                        && p1.getQ().equals(p2.getQ());
        } else if (k1 instanceof RSAPublicKey && k2 instanceof RSAPublicKey) {
            RSAPublicKey r1 = (RSAPublicKey) k1;
            RSAPublicKey r2 = (RSAPublicKey) k2;
            return r1.getModulus().equals(r2.getModulus())
                        && r1.getPublicExponent().equals(r2.getPublicExponent());

View Full Code Here

Examples of java.security.interfaces.DSAParams

     */
    public static PublicKey derivePublicKey(PrivateKey key) throws KeyException {
        KeyFactory factory;
        if (key instanceof DSAPrivateKey) {
            DSAPrivateKey dsaKey = (DSAPrivateKey) key;
            DSAParams keyParams = dsaKey.getParams();
            BigInteger y = keyParams.getQ().modPow(dsaKey.getX(), keyParams.getP());
            DSAPublicKeySpec pubKeySpec = new DSAPublicKeySpec(y, keyParams.getP(), keyParams.getQ(), keyParams.getG());


            try {
                factory = KeyFactory.getInstance("DSA");
                return factory.generatePublic(pubKeySpec);
            } catch (GeneralSecurityException e) {

View Full Code Here

Examples of java.security.interfaces.DSAParams

        
        BigInteger gComponent = keyDescriptor.getG().getValueBigInt();
        BigInteger pComponent = keyDescriptor.getP().getValueBigInt();
        BigInteger qComponent = keyDescriptor.getQ().getValueBigInt();


        DSAParams  dsaParams = new DSAParameterSpec(pComponent, qComponent, gComponent);
        return getDSAKey(keyDescriptor, dsaParams);
    }

View Full Code Here

Examples of java.security.interfaces.DSAParams

 * @see org.jclouds.ssh.SshKeys
 */
public class DSAKeys {


   public static String encodeAsOpenSSH(DSAPublicKey key) {
      DSAParams params = key.getParams();
      byte[] keyBlob = keyBlob(params.getP(), params.getQ(), params.getG(), key.getY());
      return "ssh-dss " + base64().encode(keyBlob);
   }

View Full Code Here

Examples of java.security.interfaces.DSAParams

        else if (obj instanceof DSAPrivateKey)
        {
            type = "DSA PRIVATE KEY";


            DSAPrivateKey       k = (DSAPrivateKey)obj;
            DSAParams           p = k.getParams();
            ASN1EncodableVector v = new ASN1EncodableVector();


            v.add(new DERInteger(0));
            v.add(new DERInteger(p.getP()));
            v.add(new DERInteger(p.getQ()));
            v.add(new DERInteger(p.getG()));


            BigInteger x = k.getX();
            BigInteger y = p.getG().modPow(x, p.getP());


            v.add(new DERInteger(y));
            v.add(new DERInteger(x));


            keyData = new DERSequence(v).getEncoded();

View Full Code Here

Examples of java.security.interfaces.DSAParams

     */
    public static PublicKey derivePublicKey(PrivateKey key) throws KeyException {
        KeyFactory factory;
        if (key instanceof DSAPrivateKey) {
            DSAPrivateKey dsaKey = (DSAPrivateKey) key;
            DSAParams keyParams = dsaKey.getParams();
            BigInteger y = keyParams.getQ().modPow(dsaKey.getX(), keyParams.getP());
            DSAPublicKeySpec pubKeySpec = new DSAPublicKeySpec(y, keyParams.getP(), keyParams.getQ(), keyParams.getG());


            try {
                factory = KeyFactory.getInstance("DSA");
                return factory.generatePublic(pubKeySpec);
            } catch (GeneralSecurityException e) {

View Full Code Here

Examples of java.security.interfaces.DSAParams

        
        BigInteger gComponent = keyDescriptor.getG().getValueBigInt();
        BigInteger pComponent = keyDescriptor.getP().getValueBigInt();
        BigInteger qComponent = keyDescriptor.getQ().getValueBigInt();


        DSAParams  dsaParams = new DSAParameterSpec(pComponent, qComponent, gComponent);
        return getDSAKey(keyDescriptor, dsaParams);
    }

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.