1 files changed, 104 insertions, 0 deletions
diff --git a/Crypto/src/asn1/pkcs/EncryptedData.cs b/Crypto/src/asn1/pkcs/EncryptedData.cs
new file mode 100644
index 000000000..912064ace
--- /dev/null
+++ b/Crypto/src/asn1/pkcs/EncryptedData.cs
@@ -0,0 +1,104 @@
+using System;
+
+using Org.BouncyCastle.Asn1.X509;
+
+namespace Org.BouncyCastle.Asn1.Pkcs
+{
+ /**
+ * The EncryptedData object.
+ * <pre>
+ * EncryptedData ::= Sequence {
+ * version Version,
+ * encryptedContentInfo EncryptedContentInfo
+ * }
+ *
+ *
+ * EncryptedContentInfo ::= Sequence {
+ * contentType ContentType,
+ * contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier,
+ * encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL
+ * }
+ *
+ * EncryptedContent ::= OCTET STRING
+ * </pre>
+ */
+ public class EncryptedData
+ : Asn1Encodable
+ {
+ private readonly Asn1Sequence data;
+// private readonly DerObjectIdentifier bagId;
+// private readonly Asn1Object bagValue;
+
+ 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("Unknown object in factory: " + obj.GetType().FullName, "obj");
+ }
+
+ private EncryptedData(
+ Asn1Sequence seq)
+ {
+ if (seq.Count != 2)
+ throw new ArgumentException("Wrong number of elements in sequence", "seq");
+
+ int version = ((DerInteger) seq[0]).Value.IntValue;
+ if (version != 0)
+ {
+ throw new ArgumentException("sequence not version 0");
+ }
+
+ this.data = (Asn1Sequence) seq[1];
+ }
+
+ public EncryptedData(
+ DerObjectIdentifier contentType,
+ AlgorithmIdentifier encryptionAlgorithm,
+ Asn1Encodable content)
+ {
+ data = new BerSequence(
+ contentType,
+ encryptionAlgorithm.ToAsn1Object(),
+ new BerTaggedObject(false, 0, content));
+ }
+
+ public DerObjectIdentifier ContentType
+ {
+ get { return (DerObjectIdentifier) data[0]; }
+ }
+
+ public AlgorithmIdentifier EncryptionAlgorithm
+ {
+ get { return AlgorithmIdentifier.GetInstance(data[1]); }
+ }
+
+ public Asn1OctetString Content
+ {
+ get
+ {
+ if (data.Count == 3)
+ {
+ DerTaggedObject o = (DerTaggedObject) data[2];
+
+ return Asn1OctetString.GetInstance(o, false);
+ }
+
+ return null;
+ }
+ }
+
+ public override Asn1Object ToAsn1Object()
+ {
+ return new BerSequence(new DerInteger(0), data);
+ }
+ }
+}
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