org.bouncycastle.bcpg.OnePassSignaturePacket Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcpg-jdk15to18 Show documentation

The Bouncy Castle Java API for handling the OpenPGP protocol. This jar contains the OpenPGP API for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

There is a newer version: 1.79

Show newest version

package org.bouncycastle.bcpg;

import java.io.*;

/**
 * generic signature object
 */
public class OnePassSignaturePacket 
    extends ContainedPacket
{
    private int  version;
    private int  sigType;
    private int  hashAlgorithm;
    private int  keyAlgorithm;
    private long keyID;
    private int  nested;
    
    OnePassSignaturePacket(
        BCPGInputStream    in)
        throws IOException
    {
        version = in.read();
        sigType = in.read();
        hashAlgorithm = in.read();
        keyAlgorithm = in.read();
        
        keyID |= (long)in.read() << 56;
        keyID |= (long)in.read() << 48;
        keyID |= (long)in.read() << 40;
        keyID |= (long)in.read() << 32;
        keyID |= (long)in.read() << 24;
        keyID |= (long)in.read() << 16;
        keyID |= (long)in.read() << 8;
        keyID |= in.read();
        
        nested = in.read();
    }
    
    public OnePassSignaturePacket(
        int        sigType,
        int        hashAlgorithm,
        int        keyAlgorithm,
        long       keyID,
        boolean    isNested)
    {
        this.version = 3;
        this.sigType = sigType;
        this.hashAlgorithm = hashAlgorithm;
        this.keyAlgorithm = keyAlgorithm;
        this.keyID = keyID;
        this.nested = (isNested) ? 0 : 1;
    }
    
    /**
     * Return the signature type.
     * @return the signature type
     */
    public int getSignatureType()
    {
        return sigType;
    }
    
    /**
     * return the encryption algorithm tag
     */
    public int getKeyAlgorithm()
    {
        return keyAlgorithm;
    }
    
    /**
     * return the hashAlgorithm tag
     */
    public int getHashAlgorithm()
    {
        return hashAlgorithm;
    }
    
    /**
     * @return long
     */
    public long getKeyID()
    {
        return keyID;
    }
    
    /**
     * 
     */
    public void encode(
        BCPGOutputStream    out)
        throws IOException
    {
        ByteArrayOutputStream    bOut = new ByteArrayOutputStream();
        BCPGOutputStream            pOut = new BCPGOutputStream(bOut);
  
        pOut.write(version);
        pOut.write(sigType);
        pOut.write(hashAlgorithm);
        pOut.write(keyAlgorithm);

        pOut.write((byte)(keyID >> 56));
        pOut.write((byte)(keyID >> 48));
        pOut.write((byte)(keyID >> 40));
        pOut.write((byte)(keyID >> 32));
        pOut.write((byte)(keyID >> 24));
        pOut.write((byte)(keyID >> 16));
        pOut.write((byte)(keyID >> 8));
        pOut.write((byte)(keyID));
        
        pOut.write(nested);

        pOut.close();

        out.writePacket(ONE_PASS_SIGNATURE, bOut.toByteArray(), true);
    }
}