CmsAuthenticatedData
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Cms;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Utilities;
using System.IO;
namespace Org.BouncyCastle.Cms
{
public class CmsAuthenticatedData
{
internal RecipientInformationStore recipientInfoStore;
internal ContentInfo contentInfo;
private AlgorithmIdentifier macAlg;
private Asn1Set authAttrs;
private Asn1Set unauthAttrs;
private byte[] mac;
public AlgorithmIdentifier MacAlgorithmID => macAlg;
public string MacAlgOid => macAlg.Algorithm.Id;
public ContentInfo ContentInfo => contentInfo;
public CmsAuthenticatedData(byte[] authData)
: this(CmsUtilities.ReadContentInfo(authData))
{
}
public CmsAuthenticatedData(Stream authData)
: this(CmsUtilities.ReadContentInfo(authData))
{
}
public CmsAuthenticatedData(ContentInfo contentInfo)
{
this.contentInfo = contentInfo;
AuthenticatedData instance = AuthenticatedData.GetInstance(contentInfo.Content);
Asn1Set recipientInfos = instance.RecipientInfos;
macAlg = instance.MacAlgorithm;
CmsReadable readable = new CmsProcessableByteArray(Asn1OctetString.GetInstance(instance.EncapsulatedContentInfo.Content).GetOctets());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsAuthenticatedSecureReadable(macAlg, readable);
recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(recipientInfos, secureReadable);
authAttrs = instance.AuthAttrs;
mac = instance.Mac.GetOctets();
unauthAttrs = instance.UnauthAttrs;
}
public byte[] GetMac()
{
return Arrays.Clone(mac);
}
public RecipientInformationStore GetRecipientInfos()
{
return recipientInfoStore;
}
public Org.BouncyCastle.Asn1.Cms.AttributeTable GetAuthAttrs()
{
if (authAttrs == null)
return null;
return new Org.BouncyCastle.Asn1.Cms.AttributeTable(authAttrs);
}
public Org.BouncyCastle.Asn1.Cms.AttributeTable GetUnauthAttrs()
{
if (unauthAttrs == null)
return null;
return new Org.BouncyCastle.Asn1.Cms.AttributeTable(unauthAttrs);
}
public byte[] GetEncoded()
{
return contentInfo.GetEncoded();
}
}
}