CmsEnvelopedData
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Cms;
using Org.BouncyCastle.Asn1.X509;
using System.IO;
namespace Org.BouncyCastle.Cms
{
public class CmsEnvelopedData
{
internal RecipientInformationStore recipientInfoStore;
internal ContentInfo contentInfo;
private AlgorithmIdentifier encAlg;
private Asn1Set unprotectedAttributes;
public AlgorithmIdentifier EncryptionAlgorithmID => encAlg;
public string EncryptionAlgOid => encAlg.Algorithm.Id;
public ContentInfo ContentInfo => contentInfo;
public CmsEnvelopedData(byte[] envelopedData)
: this(CmsUtilities.ReadContentInfo(envelopedData))
{
}
public CmsEnvelopedData(Stream envelopedData)
: this(CmsUtilities.ReadContentInfo(envelopedData))
{
}
public CmsEnvelopedData(ContentInfo contentInfo)
{
this.contentInfo = contentInfo;
EnvelopedData instance = EnvelopedData.GetInstance(contentInfo.Content);
Asn1Set recipientInfos = instance.RecipientInfos;
EncryptedContentInfo encryptedContentInfo = instance.EncryptedContentInfo;
encAlg = encryptedContentInfo.ContentEncryptionAlgorithm;
CmsReadable readable = new CmsProcessableByteArray(encryptedContentInfo.EncryptedContent.GetOctets());
CmsSecureReadable secureReadable = new CmsEnvelopedHelper.CmsEnvelopedSecureReadable(encAlg, readable);
recipientInfoStore = CmsEnvelopedHelper.BuildRecipientInformationStore(recipientInfos, secureReadable);
unprotectedAttributes = instance.UnprotectedAttrs;
}
public RecipientInformationStore GetRecipientInfos()
{
return recipientInfoStore;
}
public Org.BouncyCastle.Asn1.Cms.AttributeTable GetUnprotectedAttributes()
{
if (unprotectedAttributes == null)
return null;
return new Org.BouncyCastle.Asn1.Cms.AttributeTable(unprotectedAttributes);
}
public byte[] GetEncoded()
{
return contentInfo.GetEncoded();
}
}
}