Example usage for org.bouncycastle.bcpg ContainedPacket getEncoded

Introduction

In this page you can find the example usage for org.bouncycastle.bcpg ContainedPacket getEncoded.

Prototype

public byte[] getEncoded() throws IOException 

Source Link

Usage

From source file:divconq.pgp.EncryptedFileStream.java

License:Open Source License

public void init() throws PGPException, IOException, InvalidKeyException, InvalidAlgorithmParameterException,
        NoSuchAlgorithmException, NoSuchPaddingException {
    if (this.algorithm != SymmetricKeyAlgorithmTags.NULL) {
        // *******************************************************************
        // public key packet(s)
        // *******************************************************************

        if ((methods.size() == 1) && (methods.get(0) instanceof PBEKeyEncryptionMethodGenerator)) {
            PBEKeyEncryptionMethodGenerator method = (PBEKeyEncryptionMethodGenerator) methods.get(0);

            this.key = method.getKey(algorithm);

            ContainedPacket packet1 = method.generate(algorithm, null);

            byte[] encoded1 = packet1.getEncoded();

            this.ensureBuffer(encoded1.length);

            this.out.writeBytes(encoded1);
        } else {/*from  w  w w . j  ava 2s. co  m*/
            this.key = org.bouncycastle.openpgp.PGPUtil.makeRandomKey(algorithm, rand);

            byte[] sessionInfo = new byte[key.length + 3];

            // add algorithm
            sessionInfo[0] = (byte) algorithm;

            // add key
            System.arraycopy(key, 0, sessionInfo, 1, key.length);

            // add checksum 
            int check = 0;

            for (int i = 1; i != sessionInfo.length - 2; i++)
                check += sessionInfo[i] & 0xff;

            sessionInfo[sessionInfo.length - 2] = (byte) (check >> 8);
            sessionInfo[sessionInfo.length - 1] = (byte) (check);

            for (PGPKeyEncryptionMethodGenerator method : methods) {
                ContainedPacket packet1 = method.generate(algorithm, sessionInfo);

                byte[] encoded1 = packet1.getEncoded();

                this.ensureBuffer(encoded1.length);

                this.out.writeBytes(encoded1);
            }
        }

        // *******************************************************************
        // encrypt packet, add IV to encryption though
        // *******************************************************************

        this.ensureBuffer(3);

        this.out.writeByte(0xC0 | PacketTags.SYM_ENC_INTEGRITY_PRO);
        this.out.writeByte(0); // unknown size
        this.out.writeByte(1); // version number

        // ******************** start encryption **********************

        String cName = PGPUtil.getSymmetricCipherName(algorithm) + "/CFB/NoPadding";

        DefaultJcaJceHelper helper = new DefaultJcaJceHelper();

        this.cipher = helper.createCipher(cName);

        byte[] iv = new byte[this.cipher.getBlockSize()];

        this.cipher.init(Cipher.ENCRYPT_MODE, PGPUtil.makeSymmetricKey(algorithm, key),
                new IvParameterSpec(iv));

        this.digest = MessageDigest.getInstance("SHA-1");

        // --- encrypt checksum for encrypt packet, part of the encrypted output --- 

        byte[] inLineIv = new byte[this.cipher.getBlockSize() + 2];

        rand.nextBytes(inLineIv);

        inLineIv[inLineIv.length - 1] = inLineIv[inLineIv.length - 3];
        inLineIv[inLineIv.length - 2] = inLineIv[inLineIv.length - 4];

        this.writeDataInternal(inLineIv, 0, inLineIv.length);
    }

    // ******************* Optionally add Compression **************************

    // TODO set compressor 

    // ******************** Literal data packet ***********************

    this.ensureBuffer(1);
    this.writeDataInternal((byte) (0xC0 | PacketTags.LITERAL_DATA));
}

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From source file:divconq.test.pgp.PGPWriter.java

License:Open Source License

protected void writePacket(ContainedPacket p) throws IOException {
    byte[] encoded = p.getEncoded(); // TODO this is inefficient, fix someday.

    this.ensureBuffer(encoded.length);

    this.out.writeBytes(encoded);
}

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From source file:divconq.test.pgp.PGPWriter2.java

License:Open Source License

@SuppressWarnings("resource")
public void test2(String srcpath, String destpath, String keyring) throws Exception {
    Path src = Paths.get(srcpath);

    // file data 
    byte[] fileData = Files.readAllBytes(src);

    // dest/*w  w  w  . j  av  a2 s  .  co m*/
    OutputStream dest = new BufferedOutputStream(new FileOutputStream(destpath));

    // encryption key
    PGPPublicKey pubKey = null;

    InputStream keyIn = new BufferedInputStream(new FileInputStream(keyring));

    PGPPublicKeyRingCollection pgpPub = new PGPPublicKeyRingCollection(
            org.bouncycastle.openpgp.PGPUtil.getDecoderStream(keyIn), new JcaKeyFingerprintCalculator());

    //
    // we just loop through the collection till we find a key suitable for encryption, in the real
    // world you would probably want to be a bit smarter about this.
    //

    @SuppressWarnings("rawtypes")
    Iterator keyRingIter = pgpPub.getKeyRings();

    while (keyRingIter.hasNext() && (pubKey == null)) {
        PGPPublicKeyRing keyRing = (PGPPublicKeyRing) keyRingIter.next();

        @SuppressWarnings("rawtypes")
        Iterator keyIter = keyRing.getPublicKeys();

        while (keyIter.hasNext() && (pubKey == null)) {
            PGPPublicKey key = (PGPPublicKey) keyIter.next();

            if (key.isEncryptionKey())
                pubKey = key;
        }
    }

    if (pubKey == null)
        throw new IllegalArgumentException("Can't find encryption key in key ring.");

    String fileName = src.getFileName().toString();
    byte[] encName = Utf8Encoder.encode(fileName);
    long modificationTime = System.currentTimeMillis();

    SecureRandom rand = new SecureRandom();
    int algorithm = PGPEncryptedData.AES_256;

    Cipher cipher = null;

    ByteBuf leadingbuf = Hub.instance.getBufferAllocator().heapBuffer(1024 * 1024); // 1 mb
    ByteBuf encbuf = Hub.instance.getBufferAllocator().heapBuffer(1024 * 1024); // 1 mb

    // *******************************************************************
    // public key packet
    // *******************************************************************

    PGPKeyEncryptionMethodGenerator method = new JcePublicKeyKeyEncryptionMethodGenerator(pubKey);

    byte[] key = org.bouncycastle.openpgp.PGPUtil.makeRandomKey(algorithm, rand);

    byte[] sessionInfo = new byte[key.length + 3];

    // add algorithm
    sessionInfo[0] = (byte) algorithm;

    // add key
    System.arraycopy(key, 0, sessionInfo, 1, key.length);

    // add checksum 
    int check = 0;

    for (int i = 1; i != sessionInfo.length - 2; i++)
        check += sessionInfo[i] & 0xff;

    sessionInfo[sessionInfo.length - 2] = (byte) (check >> 8);
    sessionInfo[sessionInfo.length - 1] = (byte) (check);

    ContainedPacket packet1 = method.generate(algorithm, sessionInfo);

    byte[] encoded1 = packet1.getEncoded();

    leadingbuf.writeBytes(encoded1);

    // *******************************************************************
    // encrypt packet, add IV to encryption though
    // *******************************************************************

    leadingbuf.writeByte(0xC0 | PacketTags.SYM_ENC_INTEGRITY_PRO);

    this.writePacketLength(leadingbuf, 0); // 0 = we don't know

    leadingbuf.writeByte(1); // version number

    String cName = PGPUtil.getSymmetricCipherName(algorithm) + "/CFB/NoPadding";

    DefaultJcaJceHelper helper = new DefaultJcaJceHelper();

    cipher = helper.createCipher(cName);

    byte[] iv = new byte[cipher.getBlockSize()];

    cipher.init(Cipher.ENCRYPT_MODE, PGPUtil.makeSymmetricKey(algorithm, key), new IvParameterSpec(iv));

    // ******************** start encryption **********************

    // --- encrypt checksum for encrypt packet, part of the encrypted output --- 

    byte[] inLineIv = new byte[cipher.getBlockSize() + 2];

    rand.nextBytes(inLineIv);

    inLineIv[inLineIv.length - 1] = inLineIv[inLineIv.length - 3];
    inLineIv[inLineIv.length - 2] = inLineIv[inLineIv.length - 4];

    encbuf.writeBytes(inLineIv);

    System.out.println("bytes written a: " + encbuf.readableBytes());

    // --- data packet ---

    int chunkpos = 0;

    int headerlen = 1 // format
            + 1 // name length
            + encName.length // file name
            + 4; // time

    encbuf.writeByte(0xC0 | PacketTags.LITERAL_DATA);

    int packetsize = 512 - headerlen;

    if (fileData.length - chunkpos < packetsize) {
        packetsize = fileData.length - chunkpos;

        this.writePacketLength(encbuf, headerlen + packetsize);
    } else {
        encbuf.writeByte(0xE9); // 512 packet length
    }

    System.out.println("bytes written b: " + encbuf.readableBytes());

    encbuf.writeByte(PGPLiteralData.BINARY); // data format

    encbuf.writeByte((byte) encName.length); // file name

    encbuf.writeBytes(encName);

    encbuf.writeInt((int) (modificationTime / 1000)); // mod time

    System.out.println("bytes written c: " + encbuf.readableBytes());

    encbuf.writeBytes(fileData, chunkpos, packetsize);

    System.out.println("bytes written d: " + encbuf.readableBytes());

    chunkpos += packetsize;

    // write one or more literal packets
    while (chunkpos < fileData.length) {
        packetsize = 512;

        // check if this is the final packet
        if (fileData.length - chunkpos <= packetsize) {
            packetsize = fileData.length - chunkpos;

            this.writePacketLength(encbuf, packetsize);
        } else {
            encbuf.writeByte(0xE9); // full 512 packet length
        }

        encbuf.writeBytes(fileData, chunkpos, packetsize);

        chunkpos += packetsize;
    }

    // protection packet
    encbuf.writeByte(0xC0 | PacketTags.MOD_DETECTION_CODE);
    encbuf.writeByte(20); // packet length

    MessageDigest md = MessageDigest.getInstance("SHA-1");
    md.update(encbuf.array(), encbuf.arrayOffset(), encbuf.writerIndex());

    byte[] rv = md.digest();

    encbuf.writeBytes(rv);

    System.out.println("Pre-Encrypted Hex");

    this.hexDump(encbuf.array(), encbuf.arrayOffset(), encbuf.writerIndex());

    System.out.println();
    System.out.println();

    // ***** encryption data ready *********

    byte[] encdata = cipher.doFinal(encbuf.array(), encbuf.arrayOffset(), encbuf.writerIndex());

    // add encrypted data to main buffer
    leadingbuf.writeBytes(encdata);

    System.out.println("Final Hex");

    this.hexDump(leadingbuf.array(), leadingbuf.arrayOffset(), leadingbuf.writerIndex());

    System.out.println();
    System.out.println();

    // write to file
    dest.write(leadingbuf.array(), leadingbuf.arrayOffset(), leadingbuf.writerIndex());

    dest.flush();
    dest.close();
}

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From source file:divconq.test.pgp.PGPWriter2.java

License:Open Source License

@SuppressWarnings("resource")
public void test1(String srcpath, String destpath, String keyring) throws Exception {
    Path src = Paths.get(srcpath);

    // file data 
    byte[] story = Files.readAllBytes(src);

    // dest/*from w  ww .  j  a v  a 2 s. com*/
    OutputStream dest = new BufferedOutputStream(new FileOutputStream(destpath));

    // encryption key
    PGPPublicKey pubKey = null;

    InputStream keyIn = new BufferedInputStream(new FileInputStream(keyring));

    PGPPublicKeyRingCollection pgpPub = new PGPPublicKeyRingCollection(
            org.bouncycastle.openpgp.PGPUtil.getDecoderStream(keyIn), new JcaKeyFingerprintCalculator());

    //
    // we just loop through the collection till we find a key suitable for encryption, in the real
    // world you would probably want to be a bit smarter about this.
    //

    @SuppressWarnings("rawtypes")
    Iterator keyRingIter = pgpPub.getKeyRings();

    while (keyRingIter.hasNext() && (pubKey == null)) {
        PGPPublicKeyRing keyRing = (PGPPublicKeyRing) keyRingIter.next();

        @SuppressWarnings("rawtypes")
        Iterator keyIter = keyRing.getPublicKeys();

        while (keyIter.hasNext() && (pubKey == null)) {
            PGPPublicKey key = (PGPPublicKey) keyIter.next();

            if (key.isEncryptionKey())
                pubKey = key;
        }
    }

    if (pubKey == null)
        throw new IllegalArgumentException("Can't find encryption key in key ring.");

    String fileName = src.getFileName().toString();
    byte[] encName = Utf8Encoder.encode(fileName);
    long modificationTime = System.currentTimeMillis();

    SecureRandom rand = new SecureRandom();
    int algorithm = PGPEncryptedData.AES_256;

    Cipher cipher = null;

    ByteBuf leadingbuf = Hub.instance.getBufferAllocator().heapBuffer(1024 * 1024); // 1 mb
    ByteBuf encbuf = Hub.instance.getBufferAllocator().heapBuffer(1024 * 1024); // 1 mb

    // *******************************************************************
    // public key packet
    // *******************************************************************

    PGPKeyEncryptionMethodGenerator method = new JcePublicKeyKeyEncryptionMethodGenerator(pubKey);

    byte[] key = org.bouncycastle.openpgp.PGPUtil.makeRandomKey(algorithm, rand);

    byte[] sessionInfo = new byte[key.length + 3];

    // add algorithm
    sessionInfo[0] = (byte) algorithm;

    // add key
    System.arraycopy(key, 0, sessionInfo, 1, key.length);

    // add checksum 
    int check = 0;

    for (int i = 1; i != sessionInfo.length - 2; i++)
        check += sessionInfo[i] & 0xff;

    sessionInfo[sessionInfo.length - 2] = (byte) (check >> 8);
    sessionInfo[sessionInfo.length - 1] = (byte) (check);

    ContainedPacket packet1 = method.generate(algorithm, sessionInfo);

    byte[] encoded1 = packet1.getEncoded();

    leadingbuf.writeBytes(encoded1);

    // *******************************************************************
    // encrypt packet, add IV to 
    // *******************************************************************

    String cName = PGPUtil.getSymmetricCipherName(algorithm) + "/CFB/NoPadding";

    DefaultJcaJceHelper helper = new DefaultJcaJceHelper();

    cipher = helper.createCipher(cName);

    byte[] iv = new byte[cipher.getBlockSize()];

    cipher.init(Cipher.ENCRYPT_MODE, PGPUtil.makeSymmetricKey(algorithm, key), new IvParameterSpec(iv));

    // ******************** start encryption **********************

    // --- encrypt checksum for encrypt packet, part of the encrypted output --- 

    byte[] inLineIv = new byte[cipher.getBlockSize() + 2];

    rand.nextBytes(inLineIv);

    inLineIv[inLineIv.length - 1] = inLineIv[inLineIv.length - 3];
    inLineIv[inLineIv.length - 2] = inLineIv[inLineIv.length - 4];

    encbuf.writeBytes(inLineIv);

    // --- data packet ---

    encbuf.writeByte(0xC0 | PacketTags.LITERAL_DATA);

    this.writePacketLength(encbuf, 1 // format
            + 1 // name length
            + encName.length // file name
            + 4 // time
            + story.length // data
    );

    encbuf.writeByte(PGPLiteralData.BINARY);

    encbuf.writeByte((byte) encName.length);

    encbuf.writeBytes(encName);

    encbuf.writeInt((int) (modificationTime / 1000));

    encbuf.writeBytes(story);

    // protection packet
    encbuf.writeByte(0xC0 | PacketTags.MOD_DETECTION_CODE);
    encbuf.writeByte(20); // packet length

    MessageDigest md = MessageDigest.getInstance("SHA-1");
    md.update(encbuf.array(), encbuf.arrayOffset(), encbuf.writerIndex());

    byte[] rv = md.digest();

    encbuf.writeBytes(rv);

    System.out.println("Encrypted Hex");

    this.hexDump(encbuf.array(), encbuf.arrayOffset(), encbuf.writerIndex());

    System.out.println();
    System.out.println();

    // ***** encryption data ready *********

    byte[] encdata = cipher.doFinal(encbuf.array(), encbuf.arrayOffset(), encbuf.writerIndex());

    leadingbuf.writeByte(0xC0 | PacketTags.SYM_ENC_INTEGRITY_PRO);

    /*
    this.writePacketLength(leadingbuf, 
     1      // version 
     + encdata.length       // encrypted data
       );
       */

    this.writePacketLength(leadingbuf, 0); // 0 = we don't know

    leadingbuf.writeByte(1); // version number

    // add encrypted data to main buffer
    leadingbuf.writeBytes(encdata);

    System.out.println("Final Hex");

    this.hexDump(leadingbuf.array(), leadingbuf.arrayOffset(), leadingbuf.writerIndex());

    System.out.println();
    System.out.println();

    // write to file
    dest.write(leadingbuf.array(), leadingbuf.arrayOffset(), leadingbuf.writerIndex());

    dest.flush();
    dest.close();
}

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