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

/**
 * Signature Subpacket containing the number of seconds after the signatures creation
 * time after which the signature expires.
 *
 * @see 
 *     RFC4880 - Signature Expiration Time
 * @see 
 *     RFC9580 - Signature Expiration Time
 */
public class SignatureExpirationTime 
    extends SignatureSubpacket
{
    /**
     * @deprecated Will be removed
     */
    protected static byte[] timeToBytes(
        long    t)
    {
        return Utils.timeToBytes(t);
    }

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

    public SignatureExpirationTime(
        boolean    critical,
        long       seconds)
    {
        super(SignatureSubpacketTags.EXPIRE_TIME, critical, false, Utils.timeToBytes(seconds));
    }

    /**
     * return time in seconds before signature expires after creation time.
     */
    public long getTime()
    {
        return Utils.timeFromBytes(data);
    }
}