1 files changed, 99 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/asn1/cms/RecipientEncryptedKey.java b/core/src/main/java/org/bouncycastle/asn1/cms/RecipientEncryptedKey.java
new file mode 100644
index 00000000..2f2a1732
--- /dev/null
+++ b/core/src/main/java/org/bouncycastle/asn1/cms/RecipientEncryptedKey.java
@@ -0,0 +1,99 @@
+package org.bouncycastle.asn1.cms;
+
+import org.bouncycastle.asn1.ASN1EncodableVector;
+import org.bouncycastle.asn1.ASN1Object;
+import org.bouncycastle.asn1.ASN1OctetString;
+import org.bouncycastle.asn1.ASN1Primitive;
+import org.bouncycastle.asn1.ASN1Sequence;
+import org.bouncycastle.asn1.ASN1TaggedObject;
+import org.bouncycastle.asn1.DERSequence;
+
+
+public class RecipientEncryptedKey
+    extends ASN1Object
+{
+    private KeyAgreeRecipientIdentifier identifier;
+    private ASN1OctetString encryptedKey;
+
+    private RecipientEncryptedKey(
+        ASN1Sequence seq)
+    {
+        identifier = KeyAgreeRecipientIdentifier.getInstance(seq.getObjectAt(0));
+        encryptedKey = (ASN1OctetString)seq.getObjectAt(1);
+    }
+    
+    /**
+     * return an RecipientEncryptedKey object from a tagged object.
+     *
+     * @param obj the tagged object holding the object we want.
+     * @param explicit true if the object is meant to be explicitly
+     *              tagged false otherwise.
+     * @exception IllegalArgumentException if the object held by the
+     *          tagged object cannot be converted.
+     */
+    public static RecipientEncryptedKey getInstance(
+        ASN1TaggedObject    obj,
+        boolean             explicit)
+    {
+        return getInstance(ASN1Sequence.getInstance(obj, explicit));
+    }
+    
+    /**
+     * return a RecipientEncryptedKey object from the given object.
+     *
+     * @param obj the object we want converted.
+     * @exception IllegalArgumentException if the object cannot be converted.
+     */
+    public static RecipientEncryptedKey getInstance(
+        Object obj)
+    {
+        if (obj == null || obj instanceof RecipientEncryptedKey)
+        {
+            return (RecipientEncryptedKey)obj;
+        }
+        
+        if (obj instanceof ASN1Sequence)
+        {
+            return new RecipientEncryptedKey((ASN1Sequence)obj);
+        }
+        
+        throw new IllegalArgumentException("Invalid RecipientEncryptedKey: " + obj.getClass().getName());
+    } 
+
+    public RecipientEncryptedKey(
+        KeyAgreeRecipientIdentifier id,
+        ASN1OctetString             encryptedKey)
+    {
+        this.identifier = id;
+        this.encryptedKey = encryptedKey;
+    }
+
+    public KeyAgreeRecipientIdentifier getIdentifier()
+    {
+        return identifier;
+    }
+
+    public ASN1OctetString getEncryptedKey()
+    {
+        return encryptedKey;
+    }
+
+    /** 
+     * Produce an object suitable for an ASN1OutputStream.
+     * <pre>
+     * RecipientEncryptedKey ::= SEQUENCE {
+     *     rid KeyAgreeRecipientIdentifier,
+     *     encryptedKey EncryptedKey
+     * }
+     * </pre>
+     */
+    public ASN1Primitive toASN1Primitive()
+    {
+        ASN1EncodableVector  v = new ASN1EncodableVector();
+
+        v.add(identifier);
+        v.add(encryptedKey);
+
+        return new DERSequence(v);
+    }
+}