Merge "Merge remote-tracking branch 'aosp/upstream-master' into merge-152-from-upstream"

1 files changed, 53 insertions, 0 deletions

diff --git a/bcprov/src/main/java/org/bouncycastle/asn1/cms/EncryptedContentInfoParser.java b/bcprov/src/main/java/org/bouncycastle/asn1/cms/EncryptedContentInfoParser.java
new file mode 100644
index 0000000..77fb0bb
--- /dev/null
+++ b/bcprov/src/main/java/org/bouncycastle/asn1/cms/EncryptedContentInfoParser.java
@@ -0,0 +1,53 @@
+package org.bouncycastle.asn1.cms;
+
+import java.io.IOException;
+
+import org.bouncycastle.asn1.ASN1Encodable;
+import org.bouncycastle.asn1.ASN1ObjectIdentifier;
+import org.bouncycastle.asn1.ASN1SequenceParser;
+import org.bouncycastle.asn1.ASN1TaggedObjectParser;
+import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
+
+/**
+ * Parser for <a href="http://tools.ietf.org/html/rfc5652#section-6.1">RFC 5652</a> EncryptedContentInfo object.
+ * <p>
+ * <pre>
+ * EncryptedContentInfo ::= SEQUENCE {
+ *     contentType ContentType,
+ *     contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier,
+ *     encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL 
+ * }
+ * </pre>
+ */
+public class EncryptedContentInfoParser
+{
+    private ASN1ObjectIdentifier    _contentType;
+    private AlgorithmIdentifier     _contentEncryptionAlgorithm;
+    private ASN1TaggedObjectParser _encryptedContent;
+
+    public EncryptedContentInfoParser(
+        ASN1SequenceParser  seq) 
+        throws IOException
+    {
+        _contentType = (ASN1ObjectIdentifier)seq.readObject();
+        _contentEncryptionAlgorithm = AlgorithmIdentifier.getInstance(seq.readObject().toASN1Primitive());
+        _encryptedContent = (ASN1TaggedObjectParser)seq.readObject();
+    }
+    
+    public ASN1ObjectIdentifier getContentType()
+    {
+        return _contentType;
+    }
+    
+    public AlgorithmIdentifier getContentEncryptionAlgorithm()
+    {
+        return _contentEncryptionAlgorithm;
+    }
+
+    public ASN1Encodable getEncryptedContent(
+        int  tag) 
+        throws IOException
+    {
+        return _encryptedContent.getObjectParser(tag, false);
+    }
+}