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using System;
using Org.BouncyCastle.Asn1.Crmf;
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.Asn1.Cmp
{
public class OobCertHash
: Asn1Encodable
{
private readonly AlgorithmIdentifier hashAlg;
private readonly CertId certId;
private readonly DerBitString hashVal;
private OobCertHash(Asn1Sequence seq)
{
int index = seq.Count - 1;
hashVal = DerBitString.GetInstance(seq[index--]);
for (int i = index; i >= 0; i--)
{
Asn1TaggedObject tObj = (Asn1TaggedObject)seq[i];
if (tObj.TagNo == 0)
{
hashAlg = AlgorithmIdentifier.GetInstance(tObj, true);
}
else
{
certId = CertId.GetInstance(tObj, true);
}
}
}
public static OobCertHash GetInstance(object obj)
{
if (obj is OobCertHash)
return (OobCertHash)obj;
if (obj is Asn1Sequence)
return new OobCertHash((Asn1Sequence)obj);
throw new ArgumentException("Invalid object: " + obj.GetType().Name, "obj");
}
public virtual AlgorithmIdentifier HashAlg
{
get { return hashAlg; }
}
public virtual CertId CertID
{
get { return certId; }
}
/**
* <pre>
* OobCertHash ::= SEQUENCE {
* hashAlg [0] AlgorithmIdentifier OPTIONAL,
* certId [1] CertId OPTIONAL,
* hashVal BIT STRING
* -- hashVal is calculated over the Der encoding of the
* -- self-signed certificate with the identifier certID.
* }
* </pre>
* @return a basic ASN.1 object representation.
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector();
AddOptional(v, 0, hashAlg);
AddOptional(v, 1, certId);
v.Add(hashVal);
return new DerSequence(v);
}
private void AddOptional(Asn1EncodableVector v, int tagNo, Asn1Encodable obj)
{
if (obj != null)
{
v.Add(new DerTaggedObject(true, tagNo, obj));
}
}
}
}
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