Example usage for java.security KeyPairGenerator initialize

List of usage examples for java.security KeyPairGenerator initialize

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Introduction

In this page you can find the example usage for java.security KeyPairGenerator initialize.

Prototype

public void initialize(AlgorithmParameterSpec params, SecureRandom random)
        throws InvalidAlgorithmParameterException

Source Link

Document

Initializes the key pair generator with the given parameter set and source of randomness.

Usage

From source file:org.xdi.oxauth.model.crypto.signature.RSAKeyFactory.java

public RSAKeyFactory(SignatureAlgorithm signatureAlgorithm, String dnName)
        throws InvalidParameterException, NoSuchProviderException, NoSuchAlgorithmException, SignatureException,
        InvalidKeyException, CertificateEncodingException {
    if (signatureAlgorithm == null) {
        throw new InvalidParameterException("The signature algorithm cannot be null");
    }//  www  .  j  av  a 2  s .c om

    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA", "BC");
    keyGen.initialize(2048, new SecureRandom());

    KeyPair keyPair = keyGen.generateKeyPair();

    JCERSAPrivateCrtKey jcersaPrivateCrtKey = (JCERSAPrivateCrtKey) keyPair.getPrivate();
    JCERSAPublicKey jcersaPublicKey = (JCERSAPublicKey) keyPair.getPublic();

    rsaPrivateKey = new RSAPrivateKey(jcersaPrivateCrtKey.getModulus(),
            jcersaPrivateCrtKey.getPrivateExponent());

    rsaPublicKey = new RSAPublicKey(jcersaPublicKey.getModulus(), jcersaPublicKey.getPublicExponent());

    if (StringUtils.isNotBlank(dnName)) {
        // Create certificate
        GregorianCalendar startDate = new GregorianCalendar(); // time from which certificate is valid
        GregorianCalendar expiryDate = new GregorianCalendar(); // time after which certificate is not valid
        expiryDate.add(Calendar.YEAR, 1);
        BigInteger serialNumber = new BigInteger(1024, new Random()); // serial number for certificate

        X509V1CertificateGenerator certGen = new X509V1CertificateGenerator();
        X500Principal principal = new X500Principal(dnName);

        certGen.setSerialNumber(serialNumber);
        certGen.setIssuerDN(principal);
        certGen.setNotBefore(startDate.getTime());
        certGen.setNotAfter(expiryDate.getTime());
        certGen.setSubjectDN(principal); // note: same as issuer
        certGen.setPublicKey(keyPair.getPublic());
        certGen.setSignatureAlgorithm(signatureAlgorithm.getAlgorithm());

        X509Certificate x509Certificate = certGen.generate(jcersaPrivateCrtKey, "BC");
        certificate = new Certificate(signatureAlgorithm, x509Certificate);
    }
}

From source file:net.maritimecloud.identityregistry.utils.CertificateUtil.java

/**
 * Generates a keypair (public and private) based on Elliptic curves.
 * /*from  ww w.j a  v a 2s.  c o  m*/
 * @return The generated keypair
 */
public static KeyPair generateKeyPair() {
    ECGenParameterSpec ecGenSpec = new ECGenParameterSpec("secp384r1");
    KeyPairGenerator g;
    try {
        g = KeyPairGenerator.getInstance("ECDSA", BC_PROVIDER_NAME);
    } catch (NoSuchAlgorithmException | NoSuchProviderException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
    try {
        g.initialize(ecGenSpec, new SecureRandom());
    } catch (InvalidAlgorithmParameterException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
    KeyPair pair = g.generateKeyPair();
    return pair;
}

From source file:com.awstrainers.devcourse.sdkdemos.S3Test.java

@Test
public void checkUploadEncryptedObject() throws Exception {
    // Check the next url to read about how to use strong encryption with the jdk.
    // http://www.oracle.com/technetwork/es/java/javase/downloads/jce-7-download-432124.html
    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
    keyPairGenerator.initialize(1024, new SecureRandom());
    KeyPair keyPair = keyPairGenerator.genKeyPair();
    // obviously that keypair should be stored somewhere, but this is just a test.
    EncryptionMaterials encryptionMaterials = new EncryptionMaterials(keyPair);
    AmazonS3 client = new AmazonS3EncryptionClient(cred, encryptionMaterials);
    log.info(format("Using {0} bucket to post a new encrypted file.", bucketName));
    File file = createTempFile();
    Bucket bucket = client.createBucket(bucketName);
    PutObjectResult result = client.putObject(bucket.getName(), file.getName(), file);
}

From source file:mitm.common.security.ca.SMIMEKeyAndCertificateIssuer.java

private synchronized KeyPair generateKeyPair(RequestParameters parameters)
        throws NoSuchAlgorithmException, NoSuchProviderException {
    KeyPairGenerator keyPairGenerator = securityFactory.createKeyPairGenerator("RSA");

    keyPairGenerator.initialize(parameters.getKeyLength(), randomSource);

    return keyPairGenerator.generateKeyPair();
}

From source file:test.unit.org.owasp.webscarab.util.SunCertificateUtilsTest.java

private KeyPair generateKeyPair(int size) throws NoSuchAlgorithmException, InvalidAlgorithmParameterException {
    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
    SecureRandom random = new SecureRandom();
    keyPairGenerator.initialize(new RSAKeyGenParameterSpec(size, RSAKeyGenParameterSpec.F4), random);
    KeyPair keyPair = keyPairGenerator.generateKeyPair();
    return keyPair;
}

From source file:mitm.common.tools.CreateCA.java

private void generateIntermediate() throws Exception {
    X509CertificateBuilder certificateBuilder = securityFactory.createX509CertificateBuilder();

    KeyPairGenerator keyPairGenerator = securityFactory.createKeyPairGenerator("RSA");

    keyPairGenerator.initialize(2048, randomSource);

    intermediateKeyPair = keyPairGenerator.generateKeyPair();

    X500PrincipalBuilder issuerBuilder = new X500PrincipalBuilder();

    String email = "martijn@mitm.nl";

    issuerBuilder.setCommonName("MITM Intermediate");
    issuerBuilder.setCountryCode("NL");
    issuerBuilder.setEmail(email);//from ww  w .  j  a v a2  s. co m
    issuerBuilder.setLocality("Amsterdam");
    issuerBuilder.setState("NH");

    AltNamesBuilder altNamesBuider = new AltNamesBuilder();

    altNamesBuider.setRFC822Names(email);

    X500Principal issuer = issuerBuilder.buildPrincipal();
    GeneralNames altNames = altNamesBuider.buildAltNames();

    Date now = new Date();

    certificateBuilder.setSubject(issuer);
    certificateBuilder.setIssuer(rootCertificate.getSubjectX500Principal());
    certificateBuilder.setAltNames(altNames, true);
    certificateBuilder.setNotBefore(now);
    certificateBuilder.setNotAfter(DateUtils.addYears(now, 20));
    certificateBuilder.setPublicKey(intermediateKeyPair.getPublic());
    certificateBuilder.setSerialNumber(serialNumberGenerator.generate());
    certificateBuilder.setSignatureAlgorithm("SHA1WithRSAEncryption");
    certificateBuilder.setIsCA(true, true);
    certificateBuilder.addSubjectKeyIdentifier(true);

    intermediateCertificate = certificateBuilder.generateCertificate(rootKeyPair.getPrivate(),
            intermediateCertificate);
}

From source file:mitm.common.tools.CreateCA.java

private void generateRoot() throws Exception {
    X509CertificateBuilder certificateBuilder = securityFactory.createX509CertificateBuilder();

    KeyPairGenerator keyPairGenerator = securityFactory.createKeyPairGenerator("RSA");

    keyPairGenerator.initialize(2048, randomSource);

    rootKeyPair = keyPairGenerator.generateKeyPair();

    X500PrincipalBuilder issuerBuilder = new X500PrincipalBuilder();

    String email = "martijn@mitm.nl";

    issuerBuilder.setCommonName("MITM Root");
    issuerBuilder.setCountryCode("NL");
    issuerBuilder.setEmail(email);/*from  w w w.  jav a 2 s  . c o m*/
    issuerBuilder.setLocality("Amsterdam");
    issuerBuilder.setState("NH");

    AltNamesBuilder altNamesBuider = new AltNamesBuilder();

    altNamesBuider.setRFC822Names(email);

    X500Principal issuer = issuerBuilder.buildPrincipal();
    GeneralNames altNames = altNamesBuider.buildAltNames();

    Date now = new Date();

    certificateBuilder.setSubject(issuer);
    certificateBuilder.setIssuer(issuer);
    certificateBuilder.setAltNames(altNames, true);
    certificateBuilder.setNotBefore(now);
    certificateBuilder.setNotAfter(DateUtils.addYears(now, 20));
    certificateBuilder.setPublicKey(rootKeyPair.getPublic());
    certificateBuilder.setSerialNumber(serialNumberGenerator.generate());
    certificateBuilder.setSignatureAlgorithm("SHA1WithRSAEncryption");
    certificateBuilder.setIsCA(true, true);
    certificateBuilder.addSubjectKeyIdentifier(true);

    /*
     * generate self signed certificate
     */
    rootCertificate = certificateBuilder.generateCertificate(rootKeyPair.getPrivate(), null);
}

From source file:com.streamsets.lib.security.util.DataSignature.java

public KeyPair generateKeyPair() throws GeneralSecurityException {
    KeyPairGenerator keyGenerator = KeyPairGenerator.getInstance("DSA");
    SecureRandom rng = SecureRandom.getInstance("SHA1PRNG", "SUN");
    rng.setSeed(System.currentTimeMillis());
    keyGenerator.initialize(1024, rng);
    return keyGenerator.generateKeyPair();
}

From source file:org.gluu.com.ox_push2.u2f.v2.cert.KeyPairGeneratorImpl.java

@Override
public KeyPair generateKeyPair() throws U2FException {
    // generate ECC key
    SecureRandom random = new SecureRandom();

    ECParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("secp256r1");
    try {// w w w. jav a2  s .  c o m
        KeyPairGenerator g = KeyPairGenerator.getInstance("ECDSA", bouncyCastleProvider);
        g.initialize(ecSpec, random);
        KeyPair keyPair = g.generateKeyPair();

        return keyPair;
    } catch (NoSuchAlgorithmException ex) {
        throw new U2FException("Failed to generate key pair", ex);
    } catch (InvalidAlgorithmParameterException ex) {
        throw new U2FException("Failed to generate key pair", ex);
    }
}

From source file:mitm.common.security.ca.SMIMECABuilder.java

private KeyPair generateKeyPair(int keyLength) throws NoSuchAlgorithmException, NoSuchProviderException {
    KeyPairGenerator keyPairGenerator = securityFactory.createKeyPairGenerator("RSA");

    keyPairGenerator.initialize(keyLength, randomSource);

    return keyPairGenerator.generateKeyPair();
}