Example usage for org.bouncycastle.openpgp PGPSignatureSubpacketGenerator setPrimaryUserID

Introduction

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

Prototype

public void setPrimaryUserID(boolean isCritical, boolean isPrimaryUserID) 

Source Link

Usage

From source file:org.sufficientlysecure.keychain.pgp.PgpKeyOperation.java

License:Open Source License

private static PGPSignatureSubpacketGenerator generateHashedSelfSigSubpackets(Date creationTime,
        PGPPublicKey pKey, boolean primary, int flags, long expiry) {

    PGPSignatureSubpacketGenerator hashedPacketsGen = new PGPSignatureSubpacketGenerator();
    {//from   w w w. j a v a  2s .  c  o  m
        /*
         * From RFC about critical subpackets:
         * If a subpacket is encountered that is
         * marked critical but is unknown to the evaluating software, the
         * evaluator SHOULD consider the signature to be in error.
         * An evaluator may "recognize" a subpacket, but not implement it.  The
         * purpose of the critical bit is to allow the signer to tell an
         * evaluator that it would prefer a new, unknown feature to generate an
         * error than be ignored.
         */
        /* non-critical subpackets: */
        hashedPacketsGen.setPreferredSymmetricAlgorithms(false,
                PgpSecurityConstants.PREFERRED_SYMMETRIC_ALGORITHMS);
        hashedPacketsGen.setPreferredHashAlgorithms(false, PgpSecurityConstants.PREFERRED_HASH_ALGORITHMS);
        hashedPacketsGen.setPreferredCompressionAlgorithms(false,
                PgpSecurityConstants.PREFERRED_COMPRESSION_ALGORITHMS);
        hashedPacketsGen.setPrimaryUserID(false, primary);

        /* critical subpackets: we consider those important for a modern pgp implementation */
        hashedPacketsGen.setSignatureCreationTime(true, creationTime);
        // Request that senders add the MDC to the message (authenticate unsigned messages)
        hashedPacketsGen.setFeature(true, Features.FEATURE_MODIFICATION_DETECTION);
        hashedPacketsGen.setKeyFlags(true, flags);
        if (expiry > 0) {
            hashedPacketsGen.setKeyExpirationTime(true, expiry - pKey.getCreationTime().getTime() / 1000);
        }
    }

    return hashedPacketsGen;
}

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