Example usage for java.security KeyPairGenerator generateKeyPair

Introduction

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

Prototype

public KeyPair generateKeyPair()

Source Link

Document

Generates a key pair.

Usage

From source file:de.pawlidi.openaletheia.utils.CipherUtils.java

/**
 * //  ww w .j  av  a  2 s  . com
 * @return
 */
public static KeyPair generateKeyPair() {
    KeyPairGenerator generator = null;
    SecureRandom secureRandom = null;
    try {
        generator = KeyPairGenerator.getInstance(CIPHER_ALGORITHM);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("Could not generate key", e);
    }
    try {
        secureRandom = SecureRandom.getInstance(RANDOM_NUMBER_GENERATOR_ALGORITHM, "SUN");
    } catch (NoSuchAlgorithmException | NoSuchProviderException e) {
        // ignore exception
    }
    if (secureRandom == null) {
        generator.initialize(2048);
    } else {
        generator.initialize(2048, secureRandom);
    }
    return generator.generateKeyPair();
}

From source file:com.trsst.Common.java

static final KeyPair generateSigningKeyPair() {
    try {/*www. ja v  a  2 s .c o m*/
        KeyPairGenerator kpg;
        // kpg = KeyPairGenerator.getInstance("EC", "BC");
        kpg = new org.bouncycastle.jcajce.provider.asymmetric.ec.KeyPairGeneratorSpi.EC();
        kpg.initialize(new ECGenParameterSpec(CURVE_NAME));
        KeyPair kp = kpg.generateKeyPair();
        return kp;
        // } catch (NoSuchAlgorithmException e) {
        // log.error("Error while generating key: " + e.getMessage(), e);
        // } catch (NoSuchProviderException e) {
        // log.error("Error while generating key: " + e.getMessage(), e);
    } catch (InvalidAlgorithmParameterException e) {
        log.error("Error while generating key: " + e.getMessage(), e);
    }
    return null;
}

From source file:com.trsst.Common.java

static final KeyPair generateEncryptionKeyPair() {
    try {//ww  w.  j  a va 2  s.  c  o m
        KeyPairGenerator kpg;
        // kpg = KeyPairGenerator.getInstance("EC", "BC");
        kpg = new org.bouncycastle.jcajce.provider.asymmetric.ec.KeyPairGeneratorSpi.EC();
        kpg.initialize(new ECGenParameterSpec(CURVE_NAME));
        KeyPair kp = kpg.generateKeyPair();
        return kp;
        // } catch (NoSuchAlgorithmException e) {
        // log.error("Error while generating key: " + e.getMessage(), e);
        // } catch (NoSuchProviderException e) {
        // e.printStackTrace();
    } catch (InvalidAlgorithmParameterException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:org.xdi.oxauth.model.util.JwtUtil.java

public static KeyPair generateRsaKey() throws NoSuchAlgorithmException, NoSuchProviderException {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA", "BC");
    keyGen.initialize(2048, new SecureRandom());

    return keyGen.generateKeyPair();
}

From source file:org.xdi.oxauth.model.util.JwtUtil.java

public static KeyPair generateKeyES256()
        throws NoSuchProviderException, NoSuchAlgorithmException, InvalidAlgorithmParameterException {
    ECParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("P-256");

    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDSA", "BC");
    keyGen.initialize(ecSpec, new SecureRandom());

    return keyGen.generateKeyPair();
}

From source file:org.xdi.oxauth.model.util.JwtUtil.java

public static KeyPair generateKeyES384()
        throws NoSuchProviderException, NoSuchAlgorithmException, InvalidAlgorithmParameterException {
    ECParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("P-384");

    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDSA", "BC");
    keyGen.initialize(ecSpec, new SecureRandom());

    return keyGen.generateKeyPair();
}

From source file:org.xdi.oxauth.model.util.JwtUtil.java

public static KeyPair generateKeyES512()
        throws NoSuchProviderException, NoSuchAlgorithmException, InvalidAlgorithmParameterException {
    ECParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("P-521");

    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ECDSA", "BC");
    keyGen.initialize(ecSpec, new SecureRandom());

    return keyGen.generateKeyPair();
}

From source file:test.integ.be.fedict.trust.util.TestUtils.java

public static KeyPair generateKeyPair(String algorithm)
        throws NoSuchAlgorithmException, InvalidAlgorithmParameterException {

    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(algorithm);
    SecureRandom random = new SecureRandom();
    if ("RSA".equals(keyPairGenerator.getAlgorithm())) {
        keyPairGenerator.initialize(new RSAKeyGenParameterSpec(1024, RSAKeyGenParameterSpec.F4), random);
    } else if (keyPairGenerator instanceof DSAKeyPairGenerator) {
        DSAKeyPairGenerator dsaKeyPairGenerator = (DSAKeyPairGenerator) keyPairGenerator;
        dsaKeyPairGenerator.initialize(512, false, random);
    }//from   www .  j  a  va 2s  .  co m
    return keyPairGenerator.generateKeyPair();
}

From source file:bftsmart.tom.util.RSAKeyPairGenerator.java

/**
 * Generate the key pair for the process with id = <id> and put it on the
 * files config/keys/publickey<id> and config/keys/privatekey<id>
 *
 * @param id the id of the process to generate key
 * @throws Exception something goes wrong when writing the files
 *///ww  w.  j  a  v a2  s  .com
public void run(int id, int size) throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
    keyGen.initialize(size);
    KeyPair kp = keyGen.generateKeyPair();
    PublicKey puk = kp.getPublic();
    PrivateKey prk = kp.getPrivate();
    saveToFile(id, puk, prk);
}

From source file:cherry.foundation.crypto.RSASignatureSupportTest.java

private RSASignatureSupport createCrypto() throws Exception {
    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    keygen.initialize(2048);// ww w .  j a v  a2s . c om
    KeyPair key = keygen.generateKeyPair();
    RSASignatureSupport crypto = new RSASignatureSupport();
    crypto.setAlgorithm("SHA256withRSA");
    crypto.setPublicKeyResource(new InMemoryResource(key.getPublic().getEncoded()));
    crypto.setPrivateKeyResource(new InMemoryResource(key.getPrivate().getEncoded()));
    crypto.afterPropertiesSet();
    return crypto;
}