Examples of java.security.KeyPair

java.security.KeyPair
This class is a simple holder for a key pair (a public key and a private key). It does not enforce any security, and, when initialized, should be treated like a PrivateKey. @see PublicKey @see PrivateKey @version 1.16 05/11/17 @author Benjamin Renaud

        // set up the keys
        //
        PrivateKey          privKey;
        PublicKey           pubKey;


        KeyPair pair = ecGen.generateKeyPair();


        privKey = pair.getPrivate();
        pubKey = pair.getPublic();


        PKCS10CertificationRequest req = new PKCS10CertificationRequest(
                        algorithm, new X509Name("CN=XXX"), pubKey, null, privKey);
        if (!req.verify())
        {

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        ecGostKpg.initialize(ECGOST3410NamedCurveTable.getParameterSpec("GostR3410-2001-CryptoPro-A"), new SecureRandom());


        //
        // set up the keys
        //
        KeyPair             pair = ecGostKpg.generateKeyPair();
        PrivateKey          privKey = pair.getPrivate();
        PublicKey           pubKey = pair.getPublic();


        PKCS10CertificationRequest req = new PKCS10CertificationRequest(
                        algorithm, new X509Name("CN=XXX"), pubKey, null, privKey);
        if (!req.verify())
        {

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    private void nullPointerTest()
        throws Exception
    {
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA", "BC");
        keyGen.initialize(1024, new SecureRandom());
        KeyPair pair = keyGen.generateKeyPair();


        Vector oids = new Vector();
        Vector values = new Vector();
        oids.add(X509Extensions.BasicConstraints);
        values.add(new X509Extension(true, new DEROctetString(new BasicConstraints(true))));
        oids.add(X509Extensions.KeyUsage);
        values.add(new X509Extension(true, new DEROctetString(
            new KeyUsage(KeyUsage.keyCertSign | KeyUsage.cRLSign))));
        SubjectKeyIdentifier subjectKeyIdentifier = new SubjectKeyIdentifierStructure(pair.getPublic());
        X509Extension ski = new X509Extension(false, new DEROctetString(subjectKeyIdentifier));
        oids.add(X509Extensions.SubjectKeyIdentifier);
        values.add(ski);


        Attribute attribute = new Attribute(PKCSObjectIdentifiers.pkcs_9_at_extensionRequest,
            new DERSet(new X509Extensions(oids, values)));
        
        PKCS10CertificationRequest p1 = new PKCS10CertificationRequest(
            "SHA1WithRSA", new X509Principal("cn=csr"),
            pair.getPublic(), new DERSet(attribute), pair.getPrivate(), "BC");
        PKCS10CertificationRequest p2 = new PKCS10CertificationRequest(
            "SHA1WithRSA", new X509Principal("cn=csr"),
            pair.getPublic(), new DERSet(attribute), pair.getPrivate(), "BC");


        if (!p1.equals(p2))
        {
            fail("cert request comparison failed");
        }

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            curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
            new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n


        g.initialize(ecSpec, new SecureRandom());


        KeyPair kp = g.generateKeyPair();


        req = new PKCS10CertificationRequest(
                "ECDSAWITHSHA1", new X509Name("CN=XXX"), kp.getPublic(), null, kp.getPrivate());
        if (!req.verify())
        {
            fail("Failed verify check EC.");
        }

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        {
            KeyPairGenerator    g = KeyPairGenerator.getInstance("DSA", "SUN");


            g.initialize(512, new SecureRandom());


            KeyPair p = g.generateKeyPair();


            privKey = p.getPrivate();
            pubKey = p.getPublic();
        }
        catch (Exception e)
        {
            fail("error setting up keys - " + e.toString());
            return;

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        throws Exception
    {
        KeyPairGenerator     kpGen = KeyPairGenerator.getInstance("RSA", "BC");
        X509V2CRLGenerator   crlGen = new X509V2CRLGenerator();
        Date                 now = new Date();
        KeyPair              pair = kpGen.generateKeyPair();
        
        crlGen.setIssuerDN(new X500Principal("CN=Test CA"));
        
        crlGen.setThisUpdate(now);
        crlGen.setNextUpdate(new Date(now.getTime() + 100000));
        crlGen.setSignatureAlgorithm("SHA256WithRSAEncryption");
        
        crlGen.addCRLEntry(BigInteger.ONE, now, CRLReason.privilegeWithdrawn);
        
        crlGen.addExtension(X509Extensions.AuthorityKeyIdentifier, false, new AuthorityKeyIdentifierStructure(pair.getPublic()));
        
        X509CRL    crl = crlGen.generate(pair.getPrivate(), "BC");
        
        if (!crl.getIssuerX500Principal().equals(new X500Principal("CN=Test CA")))
        {
            fail("failed CRL issuer test");
        }

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        throws Exception
    {
        KeyPairGenerator     kpGen = KeyPairGenerator.getInstance("RSA", "BC");
        X509V2CRLGenerator   crlGen = new X509V2CRLGenerator();
        Date                 now = new Date();
        KeyPair              pair = kpGen.generateKeyPair();
        
        crlGen.setIssuerDN(new X500Principal("CN=Test CA"));
        
        crlGen.setThisUpdate(now);
        crlGen.setNextUpdate(new Date(now.getTime() + 100000));
        crlGen.setSignatureAlgorithm("SHA256WithRSAEncryption");
        
        Vector extOids = new Vector();
        Vector extValues = new Vector();
        
        CRLReason crlReason = CRLReason.lookup(CRLReason.privilegeWithdrawn);
        
        try
        {
            extOids.addElement(X509Extensions.ReasonCode);
            extValues.addElement(new X509Extension(false, new DEROctetString(crlReason.getEncoded())));
        }
        catch (IOException e)
        {
            throw new IllegalArgumentException("error encoding reason: " + e);
        }
        
        X509Extensions entryExtensions = new X509Extensions(extOids, extValues);
        
        crlGen.addCRLEntry(BigInteger.ONE, now, entryExtensions);
        
        crlGen.addExtension(X509Extensions.AuthorityKeyIdentifier, false, new AuthorityKeyIdentifierStructure(pair.getPublic()));
        
        X509CRL    crl = crlGen.generate(pair.getPrivate(), "BC");
        
        if (!crl.getIssuerX500Principal().equals(new X500Principal("CN=Test CA")))
        {
            fail("failed CRL issuer test");
        }

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        AsymmetricCipherKeyPair pair = engine.generateKeyPair();
        DSAPublicKeyParameters pub = (DSAPublicKeyParameters)pair.getPublic();
        DSAPrivateKeyParameters priv = (DSAPrivateKeyParameters)pair.getPrivate();


        return new KeyPair(new BCDSAPublicKey(pub),
            new BCDSAPrivateKey(priv));
    }

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            if (ecParams instanceof ECParameterSpec)
            {
                ECParameterSpec p = (ECParameterSpec)ecParams;


                BCECPublicKey pubKey = new BCECPublicKey(algorithm, pub, p, configuration);
                return new KeyPair(pubKey,
                                   new BCECPrivateKey(algorithm, priv, pubKey, p, configuration));
            }
            else if (ecParams == null)
            {
               return new KeyPair(new BCECPublicKey(algorithm, pub, configuration),
                                   new BCECPrivateKey(algorithm, priv, configuration));
            }
            else
            {
                java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec)ecParams;


                BCECPublicKey pubKey = new BCECPublicKey(algorithm, pub, p, configuration);
                
                return new KeyPair(pubKey, new BCECPrivateKey(algorithm, priv, pubKey, p, configuration));
            }
        }

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        AsymmetricCipherKeyPair pair = engine.generateKeyPair();
        GOST3410PublicKeyParameters pub = (GOST3410PublicKeyParameters)pair.getPublic();
        GOST3410PrivateKeyParameters priv = (GOST3410PrivateKeyParameters)pair.getPrivate();


        return new KeyPair(new BCGOST3410PublicKey(pub, gost3410Params), new BCGOST3410PrivateKey(priv, gost3410Params));
    }

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