1 files changed, 95 insertions, 0 deletions
diff --git a/Crypto/src/asn1/cms/EncryptedData.cs b/Crypto/src/asn1/cms/EncryptedData.cs
new file mode 100644
index 000000000..5b8378282
--- /dev/null
+++ b/Crypto/src/asn1/cms/EncryptedData.cs
@@ -0,0 +1,95 @@
+using System;
+
+namespace Org.BouncyCastle.Asn1.Cms
+{
+ public class EncryptedData
+ : Asn1Encodable
+ {
+ private readonly DerInteger version;
+ private readonly EncryptedContentInfo encryptedContentInfo;
+ private readonly Asn1Set unprotectedAttrs;
+
+ public static EncryptedData GetInstance(
+ object obj)
+ {
+ if (obj is EncryptedData)
+ return (EncryptedData) obj;
+
+ if (obj is Asn1Sequence)
+ return new EncryptedData((Asn1Sequence) obj);
+
+ throw new ArgumentException("Invalid EncryptedData: " + obj.GetType().Name);
+ }
+
+ public EncryptedData(
+ EncryptedContentInfo encInfo)
+ : this(encInfo, null)
+ {
+ }
+
+ public EncryptedData(
+ EncryptedContentInfo encInfo,
+ Asn1Set unprotectedAttrs)
+ {
+ if (encInfo == null)
+ throw new ArgumentNullException("encInfo");
+
+ this.version = new DerInteger((unprotectedAttrs == null) ? 0 : 2);
+ this.encryptedContentInfo = encInfo;
+ this.unprotectedAttrs = unprotectedAttrs;
+ }
+
+ private EncryptedData(
+ Asn1Sequence seq)
+ {
+ if (seq == null)
+ throw new ArgumentNullException("seq");
+ if (seq.Count < 2 || seq.Count > 3)
+ throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");
+
+ this.version = DerInteger.GetInstance(seq[0]);
+ this.encryptedContentInfo = EncryptedContentInfo.GetInstance(seq[1]);
+
+ if (seq.Count > 2)
+ {
+ this.unprotectedAttrs = Asn1Set.GetInstance(seq[2]);
+ }
+ }
+
+ public virtual DerInteger Version
+ {
+ get { return version; }
+ }
+
+ public virtual EncryptedContentInfo EncryptedContentInfo
+ {
+ get { return encryptedContentInfo; }
+ }
+
+ public virtual Asn1Set UnprotectedAttrs
+ {
+ get { return unprotectedAttrs; }
+ }
+
+ /**
+ * <pre>
+ * EncryptedData ::= SEQUENCE {
+ * version CMSVersion,
+ * encryptedContentInfo EncryptedContentInfo,
+ * unprotectedAttrs [1] IMPLICIT UnprotectedAttributes OPTIONAL }
+ * </pre>
+ * @return a basic ASN.1 object representation.
+ */
+ public override Asn1Object ToAsn1Object()
+ {
+ Asn1EncodableVector v = new Asn1EncodableVector(version, encryptedContentInfo);
+
+ if (unprotectedAttrs != null)
+ {
+ v.Add(new BerTaggedObject(false, 1, unprotectedAttrs));
+ }
+
+ return new BerSequence(v);
+ }
+ }
+}
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