init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Cms/CmsAuthenticatedData.cs

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+using System.IO;
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.Cms;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Utilities;
+
+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;
+		ContentInfo encapsulatedContentInfo = instance.EncapsulatedContentInfo;
+		CmsReadable readable = new CmsProcessableByteArray(Asn1OctetString.GetInstance(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();
+	}
+}