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using System;
namespace Org.BouncyCastle.Asn1.Pkcs
{
/**
* a Pkcs#7 signed data object.
*/
public class SignedData
: Asn1Encodable
{
public static SignedData GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is SignedData signedData)
return signedData;
return new SignedData(Asn1Sequence.GetInstance(obj));
}
public static SignedData GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return new SignedData(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
}
private readonly DerInteger m_version;
private readonly Asn1Set m_digestAlgorithms;
private readonly ContentInfo m_contentInfo;
private readonly Asn1Set m_certificates;
private readonly Asn1Set m_crls;
private readonly Asn1Set m_signerInfos;
private SignedData(Asn1Sequence seq)
{
int count = seq.Count, pos = 0;
if (count < 4 || count > 6)
throw new ArgumentException("Bad sequence size: " + count, nameof(seq));
m_version = DerInteger.GetInstance(seq[pos++]);
m_digestAlgorithms = Asn1Set.GetInstance(seq[pos++]);
m_contentInfo = ContentInfo.GetInstance(seq[pos++]);
m_certificates = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 0, false, Asn1Set.GetTagged);
m_crls = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 1, false, Asn1Set.GetTagged);
m_signerInfos = Asn1Set.GetInstance(seq[pos++]);
if (pos != count)
throw new ArgumentException("Unexpected elements in sequence", nameof(seq));
}
// TODO[api] Improve parameter names
public SignedData(
DerInteger _version,
Asn1Set _digestAlgorithms,
ContentInfo _contentInfo,
Asn1Set _certificates,
Asn1Set _crls,
Asn1Set _signerInfos)
{
m_version = _version ?? throw new ArgumentNullException(nameof(_version));
m_digestAlgorithms = _digestAlgorithms ?? throw new ArgumentNullException(nameof(_digestAlgorithms));
m_contentInfo = _contentInfo ?? throw new ArgumentNullException(nameof(_contentInfo));
m_certificates = _certificates;
m_crls = _crls;
m_signerInfos = _signerInfos ?? throw new ArgumentNullException(nameof(_signerInfos));
}
public DerInteger Version => m_version;
public Asn1Set DigestAlgorithms => m_digestAlgorithms;
public ContentInfo ContentInfo => m_contentInfo;
public Asn1Set Certificates => m_certificates;
public Asn1Set Crls => m_crls;
public Asn1Set SignerInfos => m_signerInfos;
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* SignedData ::= Sequence {
* version Version,
* digestAlgorithms DigestAlgorithmIdentifiers,
* contentInfo ContentInfo,
* certificates
* [0] IMPLICIT ExtendedCertificatesAndCertificates
* OPTIONAL,
* crls
* [1] IMPLICIT CertificateRevocationLists OPTIONAL,
* signerInfos SignerInfos }
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(6);
v.Add(m_version, m_digestAlgorithms, m_contentInfo);
v.AddOptionalTagged(false, 0, m_certificates);
v.AddOptionalTagged(false, 1, m_crls);
v.Add(m_signerInfos);
return new BerSequence(v);
}
}
}
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