1 files changed, 78 insertions, 0 deletions
diff --git a/pkix/src/main/java/org/spongycastle/cms/CMSAuthEnvelopedData.java b/pkix/src/main/java/org/spongycastle/cms/CMSAuthEnvelopedData.java
new file mode 100644
index 00000000..df3ab5cf
--- /dev/null
+++ b/pkix/src/main/java/org/spongycastle/cms/CMSAuthEnvelopedData.java
@@ -0,0 +1,78 @@
+package org.spongycastle.cms;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.spongycastle.asn1.ASN1Set;
+import org.spongycastle.asn1.cms.AuthEnvelopedData;
+import org.spongycastle.asn1.cms.ContentInfo;
+import org.spongycastle.asn1.cms.EncryptedContentInfo;
+import org.spongycastle.asn1.cms.OriginatorInfo;
+import org.spongycastle.asn1.x509.AlgorithmIdentifier;
+
+/**
+ * containing class for an CMS AuthEnveloped Data object
+ */
+class CMSAuthEnvelopedData
+{
+    RecipientInformationStore recipientInfoStore;
+    ContentInfo contentInfo;
+
+    private OriginatorInfo      originator;
+    private AlgorithmIdentifier authEncAlg;
+    private ASN1Set             authAttrs;
+    private byte[]              mac;
+    private ASN1Set             unauthAttrs;
+
+    public CMSAuthEnvelopedData(byte[] authEnvData) throws CMSException
+    {
+        this(CMSUtils.readContentInfo(authEnvData));
+    }
+
+    public CMSAuthEnvelopedData(InputStream authEnvData) throws CMSException
+    {
+        this(CMSUtils.readContentInfo(authEnvData));
+    }
+
+    public CMSAuthEnvelopedData(ContentInfo contentInfo) throws CMSException
+    {
+        this.contentInfo = contentInfo;
+
+        AuthEnvelopedData authEnvData = AuthEnvelopedData.getInstance(contentInfo.getContent());
+
+        this.originator = authEnvData.getOriginatorInfo();
+
+        //
+        // read the recipients
+        //
+        ASN1Set recipientInfos = authEnvData.getRecipientInfos();
+
+        //
+        // read the auth-encrypted content info
+        //
+        EncryptedContentInfo authEncInfo = authEnvData.getAuthEncryptedContentInfo();
+        this.authEncAlg = authEncInfo.getContentEncryptionAlgorithm();
+//        final CMSProcessable processable = new CMSProcessableByteArray(
+//            authEncInfo.getEncryptedContent().getOctets());
+        CMSSecureReadable secureReadable = new CMSSecureReadable()
+        {
+
+            public InputStream getInputStream()
+                throws IOException, CMSException
+            {
+                return null;
+            }
+        };
+
+        //
+        // build the RecipientInformationStore
+        //
+        this.recipientInfoStore = CMSEnvelopedHelper.buildRecipientInformationStore(
+            recipientInfos, this.authEncAlg, secureReadable);
+
+        // FIXME These need to be passed to the AEAD cipher as AAD (Additional Authenticated Data)
+        this.authAttrs = authEnvData.getAuthAttrs();
+        this.mac = authEnvData.getMac().getOctets();
+        this.unauthAttrs = authEnvData.getUnauthAttrs();
+    }
+}