Example usage for java.security.spec PKCS8EncodedKeySpec PKCS8EncodedKeySpec

Introduction

In this page you can find the example usage for java.security.spec PKCS8EncodedKeySpec PKCS8EncodedKeySpec.

Prototype

public PKCS8EncodedKeySpec(byte[] encodedKey) 

Source Link

Document

Creates a new PKCS8EncodedKeySpec with the given encoded key.

Usage

From source file:com.thoughtworks.go.security.RegistrationJSONizer.java

public static Registration fromJson(String json) {
    Map map = GSON.fromJson(json, Map.class);

    if (map.isEmpty()) {
        return Registration.createNullPrivateKeyEntry();
    }//from w w w. ja  v a2s  . com

    List<X509Certificate> chain = new ArrayList<>();
    try {
        PemReader reader = new PemReader(new StringReader((String) map.get("agentPrivateKey")));
        KeyFactory kf = KeyFactory.getInstance("RSA");
        PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(reader.readPemObject().getContent());
        PrivateKey privateKey = kf.generatePrivate(spec);
        String agentCertificate = (String) map.get("agentCertificate");
        PemReader certReader = new PemReader(new StringReader(agentCertificate));
        while (true) {
            PemObject obj = certReader.readPemObject();
            if (obj == null) {
                break;
            }
            chain.add((X509Certificate) CertificateFactory.getInstance("X.509")
                    .generateCertificate(new ByteArrayInputStream(obj.getContent())));
        }
        return new Registration(privateKey, chain.toArray(new X509Certificate[0]));
    } catch (IOException | NoSuchAlgorithmException | CertificateException | InvalidKeySpecException e) {
        throw bomb(e);
    }
}

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From source file:dk.nversion.jwt.CryptoUtils.java

public static PrivateKey loadPrivateKey(String filename)
        throws FileNotFoundException, IOException, InvalidKeySpecException, NoSuchAlgorithmException {
    PrivateKey key = null;//from   www  . ja  va 2s .c  o m
    InputStream is = null;
    try {
        is = new FileInputStream(filename);
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        StringBuilder builder = new StringBuilder();
        boolean inKey = false;

        String line;
        while ((line = br.readLine()) != null) {
            if (!inKey) {
                if (line.startsWith("-----BEGIN PRIVATE KEY-----")) {
                    inKey = true;
                }
            } else {
                if (line.startsWith("-----END PRIVATE KEY-----")) {
                    break;
                }
                builder.append(line);
            }
        }

        byte[] encoded = Base64.decodeBase64(builder.toString());
        PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(encoded);
        KeyFactory kf = KeyFactory.getInstance("RSA");
        key = kf.generatePrivate(keySpec);

    } finally {
        if (is != null) {
            try {
                is.close();
            } catch (IOException ex) {
                // Ignore
            }
        }
    }
    return key;
}

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From source file:com.security.ch08_rsa.RSACoderTextKey.java

/**
 * ?/*from  w  w  w  .j a v a2 s  .  co  m*/
 *
 * @param data
 *            ?
 * @param key
 *            ?
 * @return byte[] ?
 * @throws Exception
 */
private static byte[] decryptByPrivateKey(byte[] data, byte[] key) throws Exception {

    // ??
    PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(key);

    KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);

    // ??
    PrivateKey privateKey = keyFactory.generatePrivate(pkcs8KeySpec);

    // ?
    Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());

    cipher.init(Cipher.DECRYPT_MODE, privateKey);

    return cipher.doFinal(data);
}

---

From source file:org.waveprotocol.wave.crypto.CertUtil.java

public static PrivateKey getPrivateKeyFromBytes(byte[] derKey) throws GeneralSecurityException {
    KeyFactory fac = KeyFactory.getInstance("RSA");
    EncodedKeySpec privKeySpec = new PKCS8EncodedKeySpec(derKey);
    return fac.generatePrivate(privKeySpec);
}

---

From source file:com.vexsoftware.votifier.crypto.RSAIO.java

/**
 * Saves the key pair to the disk.//from   ww  w  .  jav  a2  s.c o m
 * 
 * @param directory
 *            The directory to save to
 * @param keyPair
 *            The key pair to save
 * @throws Exception
 *             If an error occurs
 */
public static void save(File directory, KeyPair keyPair) throws Exception {
    PrivateKey privateKey = keyPair.getPrivate();
    PublicKey publicKey = keyPair.getPublic();

    // Store the public key.
    X509EncodedKeySpec publicSpec = new X509EncodedKeySpec(publicKey.getEncoded());
    FileOutputStream out = new FileOutputStream(directory + "/public.key");
    out.write(DatatypeConverter.printBase64Binary(publicSpec.getEncoded()).getBytes());
    out.close();

    // Store the private key.
    PKCS8EncodedKeySpec privateSpec = new PKCS8EncodedKeySpec(privateKey.getEncoded());
    out = new FileOutputStream(directory + "/private.key");
    out.write(DatatypeConverter.printBase64Binary(privateSpec.getEncoded()).getBytes());
    out.close();
}

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From source file:com.github.ibole.infrastructure.security.ECDSA.java

public static void jdkECDSA() {
    try {//from  w ww .  j  a v  a 2 s . co  m
        // 1.?
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC");
        keyPairGenerator.initialize(256);
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        ECPublicKey ecPublicKey = (ECPublicKey) keyPair.getPublic();
        ECPrivateKey ecPrivateKey = (ECPrivateKey) keyPair.getPrivate();

        // 2.??
        PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(ecPrivateKey.getEncoded());

        KeyFactory keyFactory = KeyFactory.getInstance("EC");
        PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
        Signature signature = Signature.getInstance("SHA256withECDSA");
        signature.initSign(privateKey);
        signature.update(src.getBytes());
        byte[] res = signature.sign();
        System.out.println("??" + Base64.encodeBase64String(res));

        // 3.???
        X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(ecPublicKey.getEncoded());
        keyFactory = KeyFactory.getInstance("EC");
        PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
        signature = Signature.getInstance("SHA256withECDSA");
        signature.initVerify(publicKey);
        signature.update(src.getBytes());
        boolean bool = signature.verify(res);
        System.out.println("?" + bool);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:org.jasig.cas.util.PrivateKeyFactoryBean.java

protected Object createInstance() throws Exception {
    final InputStream privKey = this.location.getInputStream();
    try {/*from ww w. j ava2  s  .c o  m*/
        final byte[] bytes = new byte[privKey.available()];
        privKey.read(bytes);
        privKey.close();
        final PKCS8EncodedKeySpec privSpec = new PKCS8EncodedKeySpec(bytes);
        KeyFactory factory = KeyFactory.getInstance(this.algorithm);
        return factory.generatePrivate(privSpec);
    } finally {
        privKey.close();
    }
}

---

From source file:com.searchbox.utils.DecryptLicense.java

public static byte[] decrypt(byte[] inpBytes) throws Exception {

    byte[] pkbytes = Base64.decodeBase64(privkey);
    KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
    PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(pkbytes);
    PrivateKey pk = keyFactory.generatePrivate(privateKeySpec);

    Cipher cipher = Cipher.getInstance(xform);
    cipher.init(Cipher.DECRYPT_MODE, pk);
    return cipher.doFinal(inpBytes);
}

---

From source file:aiai.apps.commons.utils.SecUtils.java

public static PrivateKey getPrivateKey(String keyBase64)
        throws NoSuchAlgorithmException, InvalidKeySpecException {
    byte[] keyBytes = Base64.decodeBase64(keyBase64);
    PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(keyBytes);
    KeyFactory kf = KeyFactory.getInstance("RSA");
    return kf.generatePrivate(spec);
}

---

From source file:Main.java

public static KeyPair loadKeyPair(Context context, String name)
        throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
    // Read Public Key.
    File filePublicKey = new File(context.getFilesDir(), name + "_public.key");
    FileInputStream fis = new FileInputStream(filePublicKey);
    byte[] encodedPublicKey = new byte[(int) filePublicKey.length()];
    fis.read(encodedPublicKey);/*from   w  w  w . j  ava2  s .  c  o  m*/
    fis.close();

    // Read Private Key.
    File filePrivateKey = new File(context.getFilesDir(), name + "_private.key");
    fis = new FileInputStream(filePrivateKey);
    byte[] encodedPrivateKey = new byte[(int) filePrivateKey.length()];
    fis.read(encodedPrivateKey);
    fis.close();

    // Generate KeyPair.
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(encodedPublicKey);
    PublicKey publicKey = keyFactory.generatePublic(publicKeySpec);

    PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(encodedPrivateKey);
    PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);

    return new KeyPair(publicKey, privateKey);
}

---

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