Examples of java.security.KeyPairGenerator.genKeyPair()

java.security.KeyPairGenerator.genKeyPair()
Generates a key pair.
If this KeyPairGenerator has not been initialized explicitly, provider-specific defaults will be used for the size and other (algorithm-specific) values of the generated keys.
This will generate a new key pair every time it is called.
This method is functionally equivalent to {@link #generateKeyPair() generateKeyPair}. @return the generated key pair @since 1.2


    Set<KeyOperation> ops = new LinkedHashSet<>(Arrays.asList(KeyOperation.SIGN, KeyOperation.VERIFY));


    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(512);
    KeyPair keyPair = keyGen.genKeyPair();
    RSAPublicKey publicKey = (RSAPublicKey)keyPair.getPublic();
    RSAPrivateKey privateKey = (RSAPrivateKey)keyPair.getPrivate();


    RSAKey key = new RSAKey.Builder(publicKey).
      privateKey(privateKey).

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  public void testKeyConversionRoundTrip()
    throws Exception {


    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(512);
    KeyPair keyPair = keyGen.genKeyPair();
    RSAPublicKey rsaPublicKeyIn = (RSAPublicKey)keyPair.getPublic();
    RSAPrivateKey rsaPrivateKeyIn = (RSAPrivateKey)keyPair.getPrivate();


    RSAKey rsaJWK = new RSAKey.Builder(rsaPublicKeyIn).privateKey(rsaPrivateKeyIn).build();

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  public void testKeyConversionRoundTripWithCRTParams()
    throws Exception {


    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(512);
    KeyPair keyPair = keyGen.genKeyPair();
    RSAPublicKey rsaPublicKeyIn = (RSAPublicKey)keyPair.getPublic();
    RSAPrivateCrtKey rsaPrivateKeyIn = (RSAPrivateCrtKey)keyPair.getPrivate();


    RSAKey rsaJWK = new RSAKey(rsaPublicKeyIn, rsaPrivateKeyIn, null, null, null, null, null, null, null);

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    throws Exception {


    KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
    kpg.initialize(2048);


    KeyPair kp = kpg.genKeyPair();
    RSAPublicKey publicKey = (RSAPublicKey)kp.getPublic();
    RSAPrivateKey privateKey = (RSAPrivateKey)kp.getPrivate();


    JWTClaimsSet claimsSet = new JWTClaimsSet();
    claimsSet.setSubject("alice");

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      KeyPairGenerator rsaKeyPairGenerator = createMock(KeyPairGenerator.class);
      final SecureRandom secureRandom = createMock(SecureRandom.class);


      expect(crypto.rsaKeyPairGenerator()).andReturn(rsaKeyPairGenerator);
      rsaKeyPairGenerator.initialize(2048, secureRandom);
      expect(rsaKeyPairGenerator.genKeyPair()).andReturn(keyPair);


      replay(crypto, rsaKeyPairGenerator, secureRandom);


      RsaSshKeyPairGenerator supplier = Guice.createInjector(new AbstractModule(){
         protected void configure() {

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        envelope.setAttributeNS("http://www.w3.org/2000/xmlns/",
            "xmlns", "http://example.org/envelope");
        doc.appendChild(envelope);


        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
        KeyPair kp = kpg.genKeyPair();


        // the policy only grants this test SocketPermission to accept, resolve
        // and connect to localhost so that it can dereference 2nd reference
        URI policyURI =
            new File(System.getProperty("test.src", "."), "policy").toURI();

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                    new Date(System.currentTimeMillis()+i*1000));
        }
        X500Name owner = new X500Name("CN=CA");
        X509CRLImpl crl = new X509CRLImpl(owner, new Date(), new Date(), badCerts);
        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
        crl.sign(kpg.genKeyPair().getPrivate(), "SHA1withRSA");
        byte[] data = crl.getEncodedInternal();


        // Check the encoding
        checkData(crl, data, serials);

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    * @throws GeneralSecurityException 
    */
   public static KeyPair generateKeyPair(String algo) throws GeneralSecurityException  
   {
      KeyPairGenerator kpg = KeyPairGenerator.getInstance(algo);
      return kpg.genKeyPair();
   }
   
   /**
    * Get the Public Key from the keystore
    * @param ks

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               KeyPairGenerator rsaKeyPairGenerator = createMock(KeyPairGenerator.class);
               final SecureRandom secureRandom = createMock(SecureRandom.class);
               expect(crypto.rsaKeyPairGenerator()).andReturn(rsaKeyPairGenerator).anyTimes();
               rsaKeyPairGenerator.initialize(2048, secureRandom);
               expectLastCall().anyTimes();
               expect(rsaKeyPairGenerator.genKeyPair()).andReturn(keyPair).anyTimes();
               replay(crypto, rsaKeyPairGenerator, secureRandom);
               binder.bind(Crypto.class).toInstance(crypto);
               binder.bind(SecureRandom.class).toInstance(secureRandom);
            } catch (NoSuchAlgorithmException e) {
               propagate(e);

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            ne.initCause( e );
            throw ne;
        }


        generator.initialize( KEY_SIZE );
        KeyPair keypair = generator.genKeyPair();
        entry.put( KEY_ALGORITHM_AT, ALGORITHM );
        
        // Generate the private key attributes 
        PrivateKey privateKey = keypair.getPrivate();
        entry.put( PRIVATE_KEY_AT, privateKey.getEncoded() );

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