Examples with JcaPGPObjectFactory org.bouncycastle.openpgp.jcajce.JcaPGPObjectFactory used on opensource projects

Example 1 with JcaPGPObjectFactory

use of org.bouncycastle.openpgp.jcajce.JcaPGPObjectFactory in project incubator-gobblin by apache.

the class GPGFileDecryptor method decryptFile.

/**
 * Taking in a file inputstream, keyring inputstream and a passPhrase, generate a decrypted file inputstream.
 * @param inputStream file inputstream
 * @param keyIn keyring inputstream. This InputStream is owned by the caller.
 * @param passPhrase passPhrase
 * @return an {@link InputStream} for the decrypted content
 * @throws IOException
 */
public InputStream decryptFile(InputStream inputStream, InputStream keyIn, String passPhrase) throws IOException {
    try {
        PGPEncryptedDataList enc = getPGPEncryptedDataList(inputStream);
        Iterator it = enc.getEncryptedDataObjects();
        PGPPrivateKey sKey = null;
        PGPPublicKeyEncryptedData pbe = null;
        PGPSecretKeyRingCollection pgpSec = new PGPSecretKeyRingCollection(PGPUtil.getDecoderStream(keyIn), new BcKeyFingerprintCalculator());
        while (sKey == null && it.hasNext()) {
            pbe = (PGPPublicKeyEncryptedData) it.next();
            sKey = findSecretKey(pgpSec, pbe.getKeyID(), passPhrase);
        }
        if (sKey == null) {
            throw new IllegalArgumentException("secret key for message not found.");
        }
        InputStream clear = pbe.getDataStream(new JcePublicKeyDataDecryptorFactoryBuilder().setProvider(BouncyCastleProvider.PROVIDER_NAME).build(sKey));
        JcaPGPObjectFactory pgpFact = new JcaPGPObjectFactory(clear);
        return new LazyMaterializeDecryptorInputStream(pgpFact);
    } catch (PGPException e) {
        throw new IOException(e);
    }
}

Example 2 with JcaPGPObjectFactory

use of org.bouncycastle.openpgp.jcajce.JcaPGPObjectFactory in project incubator-gobblin by apache.

the class GPGFileDecryptor method getPGPEncryptedDataList.

/**
 * Generate a PGPEncryptedDataList from an inputstream
 * @param inputStream file inputstream that needs to be decrypted
 * @throws IOException
 */
private PGPEncryptedDataList getPGPEncryptedDataList(InputStream inputStream) throws IOException {
    if (Security.getProvider(BouncyCastleProvider.PROVIDER_NAME) == null) {
        Security.addProvider(new BouncyCastleProvider());
    }
    inputStream = PGPUtil.getDecoderStream(inputStream);
    JcaPGPObjectFactory pgpF = new JcaPGPObjectFactory(inputStream);
    PGPEncryptedDataList enc;
    Object pgpfObject = pgpF.nextObject();
    if (pgpfObject instanceof PGPEncryptedDataList) {
        enc = (PGPEncryptedDataList) pgpfObject;
    } else {
        enc = (PGPEncryptedDataList) pgpF.nextObject();
    }
    return enc;
}