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The Bouncy Castle Java APIs for the OpenPGP Protocol. The APIs are designed primarily to be used in conjunction with the BC LTS provider but may also be used with other providers providing cryptographic services.

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package org.bouncycastle.bcpg.sig;

import java.util.Date;

import org.bouncycastle.bcpg.SignatureSubpacket;
import org.bouncycastle.bcpg.SignatureSubpacketTags;

/**
 * Signature Subpacket containing the time at which the signature was created.
 *
 * @see 
 *     RFC4880 - Signature Creation Time
 * @see 
 *     RFC9580 - Signature Creation Time
 */
public class SignatureCreationTime 
    extends SignatureSubpacket
{
    /**
     * @deprecated Will be removed
     */
    protected static byte[] timeToBytes(
        Date    date)
    {
        long t = date.getTime() / 1000;
        return Utils.timeToBytes(t);
    }

    public SignatureCreationTime(
        boolean    critical,
        boolean    isLongLength,
        byte[]     data)
    {
        super(SignatureSubpacketTags.CREATION_TIME, critical, isLongLength, data);
    }

    public SignatureCreationTime(
        boolean    critical,
        Date       date)
    {
        super(SignatureSubpacketTags.CREATION_TIME, critical, false, timeToBytes(date));
    }

    public SignatureCreationTime(
            Date date)
    {
        this(true, date);
    }

    public Date getTime()
    {
        long time = Utils.timeFromBytes(data);
        return new Date(time * 1000);
    }
}