Example usage for org.bouncycastle.openpgp PGPSecretKeyRingCollection getKeyRings

Introduction

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

Prototype

public Iterator<PGPSecretKeyRing> getKeyRings(String userID) throws PGPException 

Source Link

Document

Return an iterator of the key rings associated with the passed in userID.

Usage

From source file:dorkbox.util.crypto.CryptoPGP.java

License:Apache License

/**
 * Find private gpg key in InputStream, also closes the input stream
 *
 * @param inputStream//from ww  w.  ja  v  a  2 s .c o  m
 *                 the inputStream that contains the private (secret) key
 * @param userId
 *                 the user id
 *
 * @return the PGP secret key
 */
public static List<PGPSecretKey> getSecretKeys(InputStream inputStream, String userId) throws PGPException {
    // iterate over every private key in the key ring
    PGPSecretKeyRingCollection secretKeyRings;
    try {
        secretKeyRings = new PGPSecretKeyRingCollection(PGPUtil.getDecoderStream(inputStream),
                fingerprintCalculator);
    } catch (IOException e) {
        throw new PGPException("No private key found in stream!", e);
    } finally {
        IO.close(inputStream);
    }

    // look for the key ring that is used to authenticate our reporting facilities
    Iterator<PGPSecretKeyRing> secretKeys = secretKeyRings.getKeyRings(userId);
    List<PGPSecretKey> pgpSecretKeys = new ArrayList<PGPSecretKey>();

    // iterate over every private key in the ring
    while (secretKeys.hasNext()) {
        PGPSecretKeyRing secretKeyRing = secretKeys.next();
        PGPSecretKey tmpKey = secretKeyRing.getSecretKey();

        if (tmpKey != null) {
            pgpSecretKeys.add(tmpKey);
        }
    }

    if (!pgpSecretKeys.isEmpty()) {
        return pgpSecretKeys;
    }

    throw new PGPException("No private key found in stream!");
}

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