Example usage for java.security KeyFactory getKeySpec

Introduction

In this page you can find the example usage for java.security KeyFactory getKeySpec.

Prototype

public final <T extends KeySpec> T getKeySpec(Key key, Class<T> keySpec) throws InvalidKeySpecException 

Source Link

Document

Returns a specification (key material) of the given key object.

Usage

From source file:Main.java

private static String getSignatureAlgorithm(Key key) throws Exception {
    if ("EC".equals(key.getAlgorithm())) {
        int curveSize;
        KeyFactory factory = KeyFactory.getInstance("EC");

        if (key instanceof PublicKey) {
            ECPublicKeySpec spec = factory.getKeySpec(key, ECPublicKeySpec.class);
            curveSize = spec.getParams().getCurve().getField().getFieldSize();
        } else if (key instanceof PrivateKey) {
            ECPrivateKeySpec spec = factory.getKeySpec(key, ECPrivateKeySpec.class);
            curveSize = spec.getParams().getCurve().getField().getFieldSize();
        } else {//w w  w.j  a v a  2  s.com
            throw new InvalidKeySpecException();
        }

        if (curveSize <= 256) {
            return "SHA256withECDSA";
        } else if (curveSize <= 384) {
            return "SHA384withECDSA";
        } else {
            return "SHA512withECDSA";
        }
    } else if ("RSA".equals(key.getAlgorithm())) {
        return "SHA256withRSA";
    } else {
        throw new IllegalArgumentException("Unsupported key type " + key.getAlgorithm());
    }
}

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From source file:com.vmware.identity.rest.idm.data.PrivateKeyDTO.java

private static String encodePrivateKey(PrivateKey key)
        throws InvalidKeySpecException, NoSuchAlgorithmException {
    if (key == null) {
        return null;
    }/*from  ww w .ja v  a  2 s  .c om*/

    KeyFactory keyFactory = KeyFactory.getInstance(key.getAlgorithm());
    PKCS8EncodedKeySpec spec = keyFactory.getKeySpec(key, PKCS8EncodedKeySpec.class);
    byte[] packed = spec.getEncoded();
    String encodePrivateKey = Base64.encodeBase64String(packed);
    Arrays.fill(packed, (byte) 0);
    return encodePrivateKey;
}

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From source file:com.sixsq.slipstream.cookie.CryptoUtils.java

static private String savePrivateKey(PrivateKey privateKey) throws GeneralSecurityException {
    KeyFactory fact = KeyFactory.getInstance(keyPairAlgorithm);
    PKCS8EncodedKeySpec spec = fact.getKeySpec(privateKey, PKCS8EncodedKeySpec.class);
    byte[] encoded = spec.getEncoded();
    String privateKeyStr = new Base64().encodeToString(encoded);
    return privateKeyStr;
}

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From source file:org.apache.cloudstack.utils.auth.SAMLUtils.java

public static String savePublicKey(PublicKey key) {
    try {//from  w  w w  .  ja  v a 2  s  . c  o m
        KeyFactory keyFactory = SAMLUtils.getKeyFactory();
        if (keyFactory == null)
            return null;
        X509EncodedKeySpec spec = keyFactory.getKeySpec(key, X509EncodedKeySpec.class);
        return new String(org.bouncycastle.util.encoders.Base64.encode(spec.getEncoded()));
    } catch (InvalidKeySpecException e) {
        s_logger.error("Unable to create KeyFactory:" + e.getMessage());
    }
    return null;
}

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From source file:org.apache.cloudstack.utils.auth.SAMLUtils.java

public static String savePrivateKey(PrivateKey key) {
    try {/*  w w w  .  j a v  a2 s  .  c om*/
        KeyFactory keyFactory = SAMLUtils.getKeyFactory();
        if (keyFactory == null)
            return null;
        PKCS8EncodedKeySpec spec = keyFactory.getKeySpec(key, PKCS8EncodedKeySpec.class);
        return new String(org.bouncycastle.util.encoders.Base64.encode(spec.getEncoded()));
    } catch (InvalidKeySpecException e) {
        s_logger.error("Unable to create KeyFactory:" + e.getMessage());
    }
    return null;
}

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From source file:org.umit.icm.mobile.utils.RSACrypto.java

public static RSAKey getPublicKeyIntegers(PublicKey publicKey)
        throws NoSuchAlgorithmException, InvalidKeySpecException {
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    RSAPublicKeySpec publicKeySpec = keyFactory.getKeySpec(publicKey, RSAPublicKeySpec.class);
    RSAKey rsaKey = RSAKey.newBuilder().setExp(publicKeySpec.getPublicExponent().toString())
            .setMod(publicKeySpec.getModulus().toString()).build();

    return rsaKey;
}

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From source file:com.orange.oidc.tim.service.KryptoUtils.java

public static String getJwkPublic(KeyPair kp) {
    try {//from   w  w  w.  j ava2s  .co m
        JSONObject jk = new JSONObject();
        jk.put("kty", "RSA");
        // generate random kid for tim_app_key
        SecureRandom random = new SecureRandom();
        String kid = new BigInteger(130, random).toString(32);
        jk.put("kid", kid);
        jk.put("e", "AQAB");

        KeyFactory kfactory = KeyFactory.getInstance("RSA");

        RSAPublicKeySpec kspec = (RSAPublicKeySpec) kfactory.getKeySpec(kp.getPublic(), RSAPublicKeySpec.class);

        jk.put("n", encodeB64(kspec.getModulus().toByteArray()));
        JSONArray ja = new JSONArray();
        ja.put(jk);
        JSONObject jo = new JSONObject();
        jo.put("keys", ja);

        // Log.d("getJwkPublic key: ",pubkey.toString());
        // Log.d("getJwkPublic jwk: ",jo.toString());

        return jo.toString();

    } catch (Exception e) {
        e.printStackTrace();
    }

    return null;
}

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From source file:com.orange.oidc.tim.service.KryptoUtils.java

public static String getJwkPrivate(KeyPair kp) {
    try {/*w  w w  . ja  v a2 s .co  m*/
        JSONObject jk = new JSONObject();
        jk.put("kty", "RSA");
        // generate random kid for tim_app_key
        SecureRandom random = new SecureRandom();
        String kid = new BigInteger(130, random).toString(32);
        jk.put("kid", kid);
        jk.put("e", "AQAB");

        KeyFactory kfactory = KeyFactory.getInstance("RSA");

        RSAPrivateKeySpec privkspec = (RSAPrivateKeySpec) kfactory.getKeySpec(kp.getPrivate(),
                RSAPrivateKeySpec.class);
        RSAPublicKeySpec pubkspec = (RSAPublicKeySpec) kfactory.getKeySpec(kp.getPublic(),
                RSAPublicKeySpec.class);

        // Log.d("getJwkPrivate n",pubkspec.getPublicExponent().toString());
        // Log.d("getJwkPrivate d",privkspec.getPrivateExponent().toString());

        jk.put("n", encodeB64(pubkspec.getModulus().toByteArray()));
        jk.put("d", encodeB64(privkspec.getPrivateExponent().toByteArray()));
        JSONArray ja = new JSONArray();
        ja.put(jk);
        JSONObject jo = new JSONObject();
        jo.put("keys", ja);

        return jo.toString();

    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:org.umit.icm.mobile.test.utils.RSACryptoTests.java

public void testPublicReadWrite() throws Throwable {
    keyPair = RSACrypto.generateKey();// ww w .j  av a  2 s. c o m
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    RSAPublicKeySpec publicKeySpec = keyFactory.getKeySpec(keyPair.getPublic(), RSAPublicKeySpec.class);
    RSACrypto.saveKey("rsaKey.pub", publicKeySpec.getModulus(), publicKeySpec.getPublicExponent());
    Assert.assertEquals(RSACrypto.readPublicKey("rsaKey.pub"), keyPair.getPublic());
}

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From source file:org.umit.icm.mobile.test.utils.RSACryptoTests.java

public void testPrivateReadWrite() throws Throwable {
    keyPair = RSACrypto.generateKey();/*  w w  w. j  a v  a 2  s  . c o m*/
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    RSAPrivateKeySpec privateKeySpec = keyFactory.getKeySpec(keyPair.getPrivate(), RSAPrivateKeySpec.class);
    RSACrypto.saveKey("rsaKey.priv", privateKeySpec.getModulus(), privateKeySpec.getPrivateExponent());
    Assert.assertEquals(RSACrypto.readPrivateKey("rsaKey.priv"), keyPair.getPrivate());
}

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