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using System;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.X509
{
/**
* A holding class for constructing an X509 Key Usage extension.
*
* <pre>
* id-ce-keyUsage OBJECT IDENTIFIER ::= { id-ce 15 }
*
* KeyUsage ::= BIT STRING {
* digitalSignature (0),
* nonRepudiation (1),
* keyEncipherment (2),
* dataEncipherment (3),
* keyAgreement (4),
* keyCertSign (5),
* cRLSign (6),
* encipherOnly (7),
* decipherOnly (8) }
* </pre>
*/
public class X509KeyUsage
: Asn1Encodable
{
public const int DigitalSignature = 1 << 7;
public const int NonRepudiation = 1 << 6;
public const int KeyEncipherment = 1 << 5;
public const int DataEncipherment = 1 << 4;
public const int KeyAgreement = 1 << 3;
public const int KeyCertSign = 1 << 2;
public const int CrlSign = 1 << 1;
public const int EncipherOnly = 1 << 0;
public const int DecipherOnly = 1 << 15;
private readonly int usage;
/**
* Basic constructor.
*
* @param usage - the bitwise OR of the Key Usage flags giving the
* allowed uses for the key.
* e.g. (X509KeyUsage.keyEncipherment | X509KeyUsage.dataEncipherment)
*/
public X509KeyUsage(
int usage)
{
this.usage = usage;
}
public override Asn1Object ToAsn1Object()
{
return new KeyUsage(usage);
}
}
}
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