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using System;
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.Asn1.Mozilla
{
/// <summary>
/// For parsing the SignedPublicKeyAndChallenge created by the KEYGEN tag included by Mozilla based browsers.
/// </summary>
/// <remarks>
/// <code>
/// SignedPublicKeyAndChallenge ::= SEQUENCE
/// {
/// publicKeyAndChallenge PublicKeyAndChallenge,
/// signatureAlgorithm AlgorithmIdentifier,
/// signature BIT STRING
/// }
/// </code>
/// </remarks>
public class SignedPublicKeyAndChallenge
: Asn1Encodable
{
public static SignedPublicKeyAndChallenge GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is SignedPublicKeyAndChallenge signedPublicKeyAndChallenge)
return signedPublicKeyAndChallenge;
return new SignedPublicKeyAndChallenge(Asn1Sequence.GetInstance(obj));
}
public static SignedPublicKeyAndChallenge GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return new SignedPublicKeyAndChallenge(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
}
private readonly PublicKeyAndChallenge m_publicKeyAndChallenge;
private readonly AlgorithmIdentifier m_signatureAlgorithm;
private readonly DerBitString m_signature;
public SignedPublicKeyAndChallenge(PublicKeyAndChallenge publicKeyAndChallenge,
AlgorithmIdentifier signatureAlgorithm, DerBitString signature)
{
m_publicKeyAndChallenge = publicKeyAndChallenge
?? throw new ArgumentNullException(nameof(publicKeyAndChallenge));
m_signatureAlgorithm = signatureAlgorithm ?? throw new ArgumentNullException(nameof(signatureAlgorithm));
m_signature = signature ?? throw new ArgumentNullException(nameof(signature));
}
private SignedPublicKeyAndChallenge(Asn1Sequence seq)
{
if (seq == null)
throw new ArgumentNullException(nameof(seq));
if (seq.Count != 3)
throw new ArgumentException($"Expected 3 elements, but found {seq.Count}", nameof(seq));
m_publicKeyAndChallenge = PublicKeyAndChallenge.GetInstance(seq[0]);
m_signatureAlgorithm = AlgorithmIdentifier.GetInstance(seq[1]);
m_signature = DerBitString.GetInstance(seq[2]);
}
public PublicKeyAndChallenge PublicKeyAndChallenge => m_publicKeyAndChallenge;
public DerBitString Signature => m_signature;
public AlgorithmIdentifier SignatureAlgorithm => m_signatureAlgorithm;
public override Asn1Object ToAsn1Object() =>
new DerSequence(m_publicKeyAndChallenge, m_signatureAlgorithm, m_signature);
}
}
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