Example usage for java.security.spec RSAPublicKeySpec getModulus

List of usage examples for java.security.spec RSAPublicKeySpec getModulus

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Introduction

In this page you can find the example usage for java.security.spec RSAPublicKeySpec getModulus.

Prototype

public BigInteger getModulus()

Source Link

Document

Returns the modulus.

Usage

From source file:com.cliqset.magicsig.util.KeyGen.java

public static void main(String[] args) {
    try {//w w w .  j a  v a  2s  .c o  m
        FileOutputStream fos = new FileOutputStream(fileName);
        for (int x = 0; x < numKeys; x++) {
            fos.write((x + " RSA.").getBytes("ASCII"));
            KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
            keyPairGenerator.initialize(keySize);
            KeyPair keyPair = keyPairGenerator.genKeyPair();

            KeyFactory keyFactory = KeyFactory.getInstance("RSA");
            RSAPublicKeySpec publicSpec = keyFactory.getKeySpec(keyPair.getPublic(), RSAPublicKeySpec.class);
            RSAPrivateKeySpec privateSpec = keyFactory.getKeySpec(keyPair.getPrivate(),
                    RSAPrivateKeySpec.class);

            fos.write(Base64.encodeBase64URLSafe(getBytes(publicSpec.getModulus())));

            fos.write(".".getBytes("ASCII"));

            fos.write(Base64.encodeBase64URLSafe(getBytes(publicSpec.getPublicExponent())));

            fos.write(".".getBytes("ASCII"));

            fos.write(Base64.encodeBase64URLSafe(getBytes(privateSpec.getPrivateExponent())));

            fos.write("\n".getBytes("ASCII"));

            System.out.println(x);
        }
        fos.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static String getJwkPublic(KeyPair kp) {
    try {/* w w  w.jav  a 2  s. c  o  m*/
        JSONObject jk = new JSONObject();
        jk.put("kty", "RSA");
        // generate random kid 
        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;
}

From source file:org.opentravel.schemacompiler.security.GenerateEncryptionKeys.java

/**
 * Generates the public and private key files used for encrypting and decrypting passwords.
 *//*from ww w.j ava2  s .c o m*/
public static void generateKeyFiles() throws Exception {
    File publicKeyFile = new File(System.getProperty("user.dir"),
            "/src/main/resources" + PasswordHelper.PUBLIC_KEYFILE);
    File privateKeyFile = new File(System.getProperty("user.dir"),
            "/src/main/resources" + PasswordHelper.PRIVATE_KEYFILE);
    KeyPairGenerator keyGenerator = KeyPairGenerator.getInstance(PasswordHelper.ENCRYPTION_ALGORITHM);

    keyGenerator.initialize(ENCRYPTION_KEY_SIZE);

    KeyPair keyPair = keyGenerator.generateKeyPair();
    KeyFactory fact = KeyFactory.getInstance(PasswordHelper.ENCRYPTION_ALGORITHM);
    RSAPublicKeySpec publicKeySpec = fact.getKeySpec(keyPair.getPublic(), RSAPublicKeySpec.class);
    RSAPrivateKeySpec privateKeySpec = fact.getKeySpec(keyPair.getPrivate(), RSAPrivateKeySpec.class);

    System.out
            .println("Public Key : " + publicKeySpec.getModulus() + " / " + publicKeySpec.getPublicExponent());
    System.out.println(
            "Private Key: " + privateKeySpec.getModulus() + " / " + privateKeySpec.getPrivateExponent());

    writeKeyFile(publicKeyFile, publicKeySpec.getModulus(), publicKeySpec.getPublicExponent());
    writeKeyFile(privateKeyFile, privateKeySpec.getModulus(), privateKeySpec.getPrivateExponent());
}

From source file:Main.java

public static String getJwkPrivate(KeyPair kp) {
    try {/*ww  w  . j a  v  a 2 s .c  o  m*/
        JSONObject jk = new JSONObject();
        jk.put("kty", "RSA");
        // generate random kid 
        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;
}

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;
}

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

public static String getJwkPublic(KeyPair kp) {
    try {//from  ww  w . j  av a 2 s  .c o 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;
}

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

public static String getJwkPrivate(KeyPair kp) {
    try {/* w w w. j a  v  a2s  . 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;
}

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

public void testPublicReadWrite() throws Throwable {
    keyPair = RSACrypto.generateKey();//from www  . j a  v a2  s . com
    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());
}

From source file:com.cellngine.crypto.RSACipher.java

@Override
public byte[] getPublicKey() {
    if (this.publicKey == null) {
        return null;
    }//from  w  w w.  ja v a 2  s .  c  o  m

    final RSAPublicKeySpec spec = this.getKeySpec(this.publicKey, RSAPublicKeySpec.class);

    return this.encode(spec.getModulus(), spec.getPublicExponent());
}

From source file:cloud.google.com.windows.example.ExampleCode.java

@SuppressWarnings("unchecked")
private JSONObject jsonEncode(KeyPair keys) throws NoSuchAlgorithmException, InvalidKeySpecException {
    KeyFactory factory = KeyFactory.getInstance("RSA");

    // Get the RSA spec for key manipulation.
    RSAPublicKeySpec pubSpec = factory.getKeySpec(keys.getPublic(), RSAPublicKeySpec.class);

    // Extract required parts of the key.
    BigInteger modulus = pubSpec.getModulus();
    BigInteger exponent = pubSpec.getPublicExponent();

    // Grab an encoder for the modulus and exponent to encode using RFC 3548;
    // Java SE 7 requires an external library (Google's Guava used here)
    // Java SE 8 has a built-in Base64 class that can be used instead. Apache also has an RFC 3548
    // encoder.//from  w w  w . j a va2 s.  co m
    BaseEncoding stringEncoder = BaseEncoding.base64();

    // Strip out the leading 0 byte in the modulus.
    byte[] arr = Arrays.copyOfRange(modulus.toByteArray(), 1, modulus.toByteArray().length);

    JSONObject returnJson = new JSONObject();

    // Encode the modulus, add to returned JSON object.
    String modulusString = stringEncoder.encode(arr).replaceAll("\n", "");
    returnJson.put("modulus", modulusString);

    // Encode exponent, add to returned JSON object.
    String exponentString = stringEncoder.encode(exponent.toByteArray()).replaceAll("\n", "");
    returnJson.put("exponent", exponentString);

    return returnJson;
}