Example usage for org.bouncycastle.util.encoders Base64 encode

Introduction

In this page you can find the example usage for org.bouncycastle.util.encoders Base64 encode.

Prototype

public static byte[] encode(byte[] data) 

Source Link

Document

encode the input data producing a base 64 encoded byte array.

Usage

From source file:cc.telepath.phage.PhageIdentity.java

License:GNU General Public License

/**
 * Discover a secret channel that has been announced to our key.
 * @param PhageGroupPubKey/*from  ww w .  j ava2  s. c  om*/
 * @param pcl
 * @return
 * @throws IOException
 * @throws FcpException
 * @throws IllegalBlockSizeException
 * @throws BadPaddingException
 * @throws NoSuchPaddingException
 * @throws NoSuchAlgorithmException
 * @throws InvalidKeyException
 */
public void discoverSecretChannel(String PhageGroupPubKey, PhageFCPClient pcl) throws InvalidSigException,
        IOException, FcpException, IllegalBlockSizeException, BadPaddingException, NoSuchPaddingException,
        NoSuchAlgorithmException, InvalidKeyException, InvalidKeySpecException, SignatureException {
    Base64 base64 = new Base64();
    Hex hex = new Hex();
    Crypto c = new Crypto();
    String ownkey = new String(base64.encode(this.pubKey.getEncoded()));
    String combination;
    if (PhageGroupPubKey.compareTo(ownkey) < 0) {
        combination = PhageGroupPubKey + ownkey;
    } else {
        combination = ownkey + PhageGroupPubKey;
    }
    MessageDigest md = MessageDigest.getInstance("SHA-512");
    md.update(combination.getBytes());
    byte[] rendezvousbytes = md.digest();
    String rendezvous = "KSK@" + new String(hex.encode(rendezvousbytes));
    String secretChannelAnnouncement = new String(pcl.getData(rendezvous));
    KeyFactory kf = KeyFactory.getInstance("RSA");
    PublicKey groupPk = kf.generatePublic(new X509EncodedKeySpec(base64.decode(PhageGroupPubKey)));
    boolean sigValid = c.sigValid(secretChannelAnnouncement.split(":")[0],
            secretChannelAnnouncement.split(":")[1], groupPk);
    String message = c.decryptMessage(this.getPrivkey(), secretChannelAnnouncement.split(":")[0]);
    System.out.println("SecretChannel: " + message);
    if (!sigValid) {
        throw new InvalidSigException("The message signature from " + PhageGroupPubKey
                + "failed!! Either invalid data was provided or somebody is impersonating this identity.");
    } else {
        this.contactChannel = message;
    }

}

---

From source file:cc.telepath.phage.PhageIdentity.java

License:GNU General Public License

@Override
public String toString() {
    Base64 base64 = new Base64();
    return base64.encode(this.getPubkey().getEncoded()) + ":" + this.getFreenetPubkey();
}

---

From source file:cc.telepath.phage.util.Crypto.java

License:GNU General Public License

/**
 * Returns a base64 encoded 256-bit AES Key
 * @return//from  w w w.  j  a va  2 s. com
 * @throws InvalidKeyException
 * @throws BadPaddingException
 * @throws IllegalBlockSizeException
 * @throws NoSuchPaddingException
 * @throws NoSuchAlgorithmException
 * @throws NoSuchProviderException
 */
public String generateAESKey() throws InvalidKeyException, BadPaddingException, IllegalBlockSizeException,
        NoSuchPaddingException, NoSuchAlgorithmException, NoSuchProviderException {
    SecureRandom sr = new SecureRandom();
    Base64 base64 = new Base64();
    byte[] keyBytes = new byte[32];
    sr.nextBytes(keyBytes);
    SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
    return new String(base64.encode(key.getEncoded()));
}

---

From source file:cc.telepath.phage.util.Crypto.java

License:GNU General Public License

/**
 * Returns a base64 encoded pair of strings separated by a colon. The first is the encrypted message, the second is
 * the signature of that base64 encoded encrypted message.
 * @param pubkey/*from  w  ww. j  a  v a 2 s .  c om*/
 * @param privKey
 * @param message
 * @return
 * @throws InvalidKeyException
 * @throws NoSuchPaddingException
 * @throws NoSuchAlgorithmException
 * @throws BadPaddingException
 * @throws IllegalBlockSizeException
 * @throws SignatureException
 */
public String encryptAndSign(PublicKey pubkey, PrivateKey privKey, String message)
        throws InvalidKeyException, NoSuchPaddingException, NoSuchAlgorithmException, BadPaddingException,
        IllegalBlockSizeException, SignatureException {
    Base64 base64 = new Base64();
    Cipher cipher = Cipher.getInstance(pubkey.getAlgorithm());
    cipher.init(Cipher.ENCRYPT_MODE, pubkey);

    byte[] encryptData = cipher.doFinal(message.getBytes());

    Signature sig = Signature.getInstance("SHA512withRSA");
    sig.initSign(privKey);
    sig.update(new String(base64.encode(encryptData)).getBytes());
    byte[] signatureBytes = sig.sign();
    String encryptedMessage = new String(base64.encode(encryptData));
    String signature = new String(base64.encode(signatureBytes));
    return encryptedMessage + ":" + signature;
}

---

From source file:cc.telepath.phage.util.Crypto.java

License:GNU General Public License

/**
 * Convert an arbitrary length password to a base64 encoded 256-bit AES key.
 * @param password//from   ww w .  j  av a 2  s  .  c o  m
 * @return
 * @throws NoSuchAlgorithmException
 * @throws NoSuchProviderException
 */
public String passwordToAESKey(String password) throws NoSuchAlgorithmException, NoSuchProviderException {
    Base64 base64 = new Base64();
    MessageDigest md = MessageDigest.getInstance("SHA512", "BC");
    md.update(password.getBytes());
    byte[] passwordBytes = Arrays.copyOfRange(md.digest(), 0, 32);
    return new String(base64.encode(passwordBytes));
}

---

From source file:cf.monteux.silvertunnel.netlib.layer.tor.util.Encryption.java

License:Open Source License

/**
 * converts a JCERSAPublicKey into PEM/PKCS1-encoding.
 *
 * @param rsaPublicKey/*w  w w.  j  av a2 s. c  o m*/
 * @return PEM-encoded RSA PUBLIC KEY
 */
public static String getPEMStringFromRSAPublicKey(final RSAPublicKey rsaPublicKey) {

    // mrk: this was awful to program. Remeber: There are two entirely
    // different
    // standard formats for rsa public keys. Bouncy castle does only support
    // the
    // one we can't use for TOR directories.

    final StringBuffer tmpDirSigningKey = new StringBuffer();

    try {

        tmpDirSigningKey.append("-----BEGIN RSA PUBLIC KEY-----\n");

        final byte[] base64Encoding = Base64.encode(getPKCS1EncodingFromRSAPublicKey(rsaPublicKey));
        for (int i = 0; i < base64Encoding.length; i++) {
            tmpDirSigningKey.append((char) base64Encoding[i]);
            if (((i + 1) % 64) == 0) {
                tmpDirSigningKey.append("\n");
            }
        }
        tmpDirSigningKey.append("\n");

        tmpDirSigningKey.append("-----END RSA PUBLIC KEY-----\n");
    } catch (final Exception e) {
        return null;
    }

    return tmpDirSigningKey.toString();
}

---

From source file:cn.ieclipse.pde.signer.util.BcpSigner.java

License:Apache License

/** Add the SHA1 of every file to the manifest, creating it if necessary. */
private static Manifest addDigestsToManifest(JarFile jar) throws IOException, GeneralSecurityException {
    Manifest input = jar.getManifest();
    Manifest output = new Manifest();
    Attributes main = output.getMainAttributes();
    if (input != null) {
        main.putAll(input.getMainAttributes());
    } else {/* w ww.  ja  v  a 2 s.c  o m*/
        main.putValue("Manifest-Version", "1.0");
        main.putValue("Created-By", CREATED);
    }

    MessageDigest md = MessageDigest.getInstance("SHA1");
    byte[] buffer = new byte[4096];
    int num;

    // We sort the input entries by name, and add them to the
    // output manifest in sorted order. We expect that the output
    // map will be deterministic.

    TreeMap<String, JarEntry> byName = new TreeMap<String, JarEntry>();

    for (Enumeration<JarEntry> e = jar.entries(); e.hasMoreElements();) {
        JarEntry entry = e.nextElement();
        byName.put(entry.getName(), entry);
    }

    for (JarEntry entry : byName.values()) {
        String name = entry.getName();
        if (!entry.isDirectory() && !name.equals(JarFile.MANIFEST_NAME) && !name.equals(CERT_SF_NAME)
                && !name.equals(CERT_RSA_NAME) && !name.equals(OTACERT_NAME)
                && (stripPattern == null || !stripPattern.matcher(name).matches())) {
            InputStream data = jar.getInputStream(entry);
            while ((num = data.read(buffer)) > 0) {
                md.update(buffer, 0, num);
            }

            Attributes attr = null;
            if (input != null)
                attr = input.getAttributes(name);
            attr = attr != null ? new Attributes(attr) : new Attributes();
            attr.putValue("SHA1-Digest", new String(Base64.encode(md.digest()), "ASCII"));
            output.getEntries().put(name, attr);
        }
    }

    return output;
}

---

From source file:cn.ieclipse.pde.signer.util.BcpSigner.java

License:Apache License

/**
 * Add a copy of the public key to the archive; this should exactly match
 * one of the files in /system/etc/security/otacerts.zip on the device. (The
 * same cert can be extracted from the CERT.RSA file but this is much easier
 * to get at.)//from  w  ww.j  av a  2s.  c om
 */
private static void addOtacert(JarOutputStream outputJar, File publicKeyFile, long timestamp, Manifest manifest)
        throws IOException, GeneralSecurityException {
    MessageDigest md = MessageDigest.getInstance("SHA1");

    JarEntry je = new JarEntry(OTACERT_NAME);
    je.setTime(timestamp);
    outputJar.putNextEntry(je);
    FileInputStream input = new FileInputStream(publicKeyFile);
    byte[] b = new byte[4096];
    int read;
    while ((read = input.read(b)) != -1) {
        outputJar.write(b, 0, read);
        md.update(b, 0, read);
    }
    input.close();

    Attributes attr = new Attributes();
    attr.putValue("SHA1-Digest", new String(Base64.encode(md.digest()), "ASCII"));
    manifest.getEntries().put(OTACERT_NAME, attr);
}

---

From source file:cn.ieclipse.pde.signer.util.BcpSigner.java

License:Apache License

/** Write a .SF file with a digest of the specified manifest. */
private static void writeSignatureFile(Manifest manifest, OutputStream out)
        throws IOException, GeneralSecurityException {
    Manifest sf = new Manifest();
    Attributes main = sf.getMainAttributes();
    main.putValue("Signature-Version", "1.0");
    main.putValue("Created-By", CREATED);

    MessageDigest md = MessageDigest.getInstance("SHA1");
    PrintStream print = new PrintStream(new DigestOutputStream(new ByteArrayOutputStream(), md), true, "UTF-8");

    // Digest of the entire manifest
    manifest.write(print);/*from   w w w  .j  av  a 2  s .c  o  m*/
    print.flush();
    main.putValue("SHA1-Digest-Manifest", new String(Base64.encode(md.digest()), "ASCII"));

    Map<String, Attributes> entries = manifest.getEntries();
    for (Map.Entry<String, Attributes> entry : entries.entrySet()) {
        // Digest of the manifest stanza for this entry.
        print.print("Name: " + entry.getKey() + "\r\n");
        for (Map.Entry<Object, Object> att : entry.getValue().entrySet()) {
            print.print(att.getKey() + ": " + att.getValue() + "\r\n");
        }
        print.print("\r\n");
        print.flush();

        Attributes sfAttr = new Attributes();
        sfAttr.putValue("SHA1-Digest", new String(Base64.encode(md.digest()), "ASCII"));
        sf.getEntries().put(entry.getKey(), sfAttr);
    }

    CountOutputStream cout = new CountOutputStream(out);
    sf.write(cout);

    // A bug in the java.util.jar implementation of Android platforms
    // up to version 1.6 will cause a spurious IOException to be thrown
    // if the length of the signature file is a multiple of 1024 bytes.
    // As a workaround, add an extra CRLF in this case.
    if ((cout.size() % 1024) == 0) {
        cout.write('\r');
        cout.write('\n');
    }
}

---

From source file:cn.ieclipse.pde.signer.util.SignApk.java

License:Apache License

/** Add the SHA1 of every file to the manifest, creating it if necessary. */
private static Manifest addDigestsToManifest(JarFile jar) throws IOException, GeneralSecurityException {
    Manifest input = jar.getManifest();
    Manifest output = new Manifest();
    Attributes main = output.getMainAttributes();
    if (input != null) {
        main.putAll(input.getMainAttributes());
    } else {//from ww  w  . j a va  2 s .  c  om
        main.putValue("Manifest-Version", "1.0");
        main.putValue("Created-By", "1.0 (Android SignApk)");
    }

    MessageDigest md = MessageDigest.getInstance("SHA1");
    byte[] buffer = new byte[4096];
    int num;

    // We sort the input entries by name, and add them to the
    // output manifest in sorted order. We expect that the output
    // map will be deterministic.

    TreeMap<String, JarEntry> byName = new TreeMap<String, JarEntry>();

    for (Enumeration<JarEntry> e = jar.entries(); e.hasMoreElements();) {
        JarEntry entry = e.nextElement();
        byName.put(entry.getName(), entry);
    }

    for (JarEntry entry : byName.values()) {
        String name = entry.getName();
        if (!entry.isDirectory() && !name.equals(JarFile.MANIFEST_NAME) && !name.equals(CERT_SF_NAME)
                && !name.equals(CERT_RSA_NAME) && !name.equals(OTACERT_NAME)
                && (stripPattern == null || !stripPattern.matcher(name).matches())) {
            InputStream data = jar.getInputStream(entry);
            while ((num = data.read(buffer)) > 0) {
                md.update(buffer, 0, num);
            }

            Attributes attr = null;
            if (input != null)
                attr = input.getAttributes(name);
            attr = attr != null ? new Attributes(attr) : new Attributes();
            attr.putValue("SHA1-Digest", new String(Base64.encode(md.digest()), "ASCII"));
            output.getEntries().put(name, attr);
        }
    }

    return output;
}

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