Example usage for org.bouncycastle.openpgp PGPEncryptedDataGenerator PGPEncryptedDataGenerator

Introduction

In this page you can find the example usage for org.bouncycastle.openpgp PGPEncryptedDataGenerator PGPEncryptedDataGenerator.

Prototype

public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder, boolean oldFormat) 

Source Link

Document

Base constructor with the option to turn on formatting for PGP 2.6.x compatibility.

Usage

From source file:alpha.offsync.security.OpenPGPSecurityUtility.java

License:Apache License

@Override
public void encrypt(final OutputStream outputStream, final InputStream inputStream, final String[] keyInfo) {

    try {/*w  w w . j a  v a  2s.c o m*/
        // =
        // this.readPublicKey(this.publicKeyRing);

        final ArmoredOutputStream out = new ArmoredOutputStream(outputStream);

        try {
            final BcPGPDataEncryptorBuilder builder = new BcPGPDataEncryptorBuilder(
                    SymmetricKeyAlgorithmTags.CAST5);
            builder.setSecureRandom(new SecureRandom());
            final PGPEncryptedDataGenerator cPk = new PGPEncryptedDataGenerator(builder, true);
            for (final String info : keyInfo) {
                final PGPPublicKey encKey = this.getEncryptionKey(info);
                if (encKey != null) {
                    cPk.addMethod(new BcPublicKeyKeyEncryptionMethodGenerator(encKey));
                } else {
                    OpenPGPSecurityUtility.LOGGER
                            .info("Encryption key for recipient " + info + " could not be found!");
                }

            }

            final OutputStream cOut = cPk.open(out, new byte[1 << 16]);

            final PGPCompressedDataGenerator comData = new PGPCompressedDataGenerator(
                    CompressionAlgorithmTags.ZIP);

            final PGPLiteralDataGenerator lData = new PGPLiteralDataGenerator();
            final byte[] buffer = new byte[1 << 16];
            final OutputStream pOut = lData.open(comData.open(cOut), PGPLiteralData.BINARY, "", new Date(),
                    buffer);

            final byte[] buf = new byte[buffer.length];
            int len;

            while ((len = inputStream.read(buf)) > 0) {
                pOut.write(buf, 0, len);
            }

            lData.close();
            inputStream.close();

            comData.close();

            cOut.close();

            out.close();

        } catch (final PGPException e) {
            System.err.println(e);
            if (e.getUnderlyingException() != null) {
                e.getUnderlyingException().printStackTrace();
            }
        }
    } catch (final IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

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