Example usage for java.security KeyPairGenerator initialize

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.artifactory.security.crypto.CryptoHelper.java

public static KeyPair generateKeyPair() {
    try {//from   w w w . j  a  va  2 s . c o m
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ASYM_ALGORITHM);
        SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
        keyGen.initialize(512, random);
        return keyGen.generateKeyPair();
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalArgumentException("No such algorithm:" + e.getMessage());
    }
}

From source file:com.peterphi.std.crypto.keygen.CaHelper.java

public static KeyPair generateKeyPair(int bits) throws Exception {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA", "BC");
    keyGen.initialize(bits, new SecureRandom());
    return keyGen.generateKeyPair();
}

From source file:test.integ.be.fedict.commons.eid.client.SSLTest.java

private static KeyPair generateKeyPair() throws Exception {
    final KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
    final SecureRandom random = new SecureRandom();
    keyPairGenerator.initialize(new RSAKeyGenParameterSpec(1024, RSAKeyGenParameterSpec.F4), random);
    final KeyPair keyPair = keyPairGenerator.generateKeyPair();
    return keyPair;
}

From source file:Main.java

/**
 * Generates a public/private key pair that meets Thali's security requirements
 * @return//  ww w.  j a  v a 2s .  c  o  m
 */
public static KeyPair GenerateThaliAcceptablePublicPrivateKeyPair() {
    KeyPairGenerator keyPairGenerator = null;
    try {
        keyPairGenerator = KeyPairGenerator.getInstance(KeyTypeIdentifier);
        // TODO: http://android-developers.blogspot.com/2013/08/some-securerandom-thoughts.html talks about security
        // failures in Android caused by improperly initialized RNGs. It would appear that this issue doesn't
        // apply to the latest version of Android. But obviously this is something that has to be further investigated
        // to make sure we are doing this correctly.
        keyPairGenerator.initialize(KeySizeInBits, new SecureRandom());
        return keyPairGenerator.generateKeyPair();
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
}

From source file:org.aon.esolutions.appconfig.client.util.RSAEncryptUtil.java

/**
 * Generate key which contains a pair of privae and public key using 1024 bytes
 * @return key pair/*from ww  w. j  a  va  2s  .co m*/
 * @throws NoSuchAlgorithmException
 */
public static KeyPair generateKey(String keyPhrase) throws GeneralSecurityException {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM);

    SecureRandom randomAlg = SecureRandom.getInstance("SHA1PRNG", "SUN");
    randomAlg.setSeed(keyPhrase.getBytes());

    keyGen.initialize(1024, randomAlg);
    KeyPair key = keyGen.generateKeyPair();
    return key;
}

From source file:net.link.util.common.KeyUtils.java

public static KeyPair generateKeyPair(String algorithm) throws NoSuchAlgorithmException {

    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(algorithm);
    SecureRandom random = new SecureRandom();
    if ("RSA".equals(keyPairGenerator.getAlgorithm()))
        try {// ww w . j  av a 2 s . co  m
            keyPairGenerator.initialize(new RSAKeyGenParameterSpec(RSA_KEYSIZE, RSAKeyGenParameterSpec.F4),
                    random);
        } catch (InvalidAlgorithmParameterException e) {
            throw new InternalInconsistencyException("KeyGenParams incompatible with key generator.", e);
        }
    else if (keyPairGenerator instanceof DSAKeyPairGenerator) {
        DSAKeyPairGenerator dsaKeyPairGenerator = (DSAKeyPairGenerator) keyPairGenerator;
        dsaKeyPairGenerator.initialize(DSA_MODLEN, false, random);
    }

    return keyPairGenerator.generateKeyPair();
}

From source file:com.owncloud.android.utils.EncryptionUtils.java

public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance(RSA);
    keyGen.initialize(2048, 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 w w  w . ja  v  a  2s .  c om*/
    return keyPairGenerator.generateKeyPair();
}

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();
}