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