Examples of org.bouncycastle.cms.CMSEnvelopedDataParser

org.bouncycastle.cms.CMSEnvelopedDataParser

Parsing class for an CMS Enveloped Data object from an input stream.

Note: that because we are in a streaming mode only one recipient can be tried and it is important that the methods on the parser are called in the appropriate order.

Example of use - assuming the first recipient matches the private key we have.

 CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(inputStream); RecipientInformationStore  recipients = ep.getRecipientInfos(); Collection  c = recipients.getRecipients(); Iterator    it = c.iterator(); if (it.hasNext()) { RecipientInformation   recipient = (RecipientInformation)it.next(); CMSTypedStream recData = recipient.getContentStream(privateKey, "BC"); processDataStream(recData.getContentStream()); }

Note: this class does not introduce buffering - if you are processing large files you should create the parser with:

 CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(new BufferedInputStream(inputStream, bufSize));

where bufSize is a suitably large buffer size.

     * @throws Exception
     */
    public static void decrypt(final InputStream is, OutputStream os, Key key, String providerName) throws Exception  {
        final InputStream bis = new BufferedInputStream(is, bufferSize);
        final OutputStream bos = new BufferedOutputStream(os, bufferSize);
        final Iterator  it = new CMSEnvelopedDataParser(bis).getRecipientInfos().getRecipients().iterator();
        if (it.hasNext()) {
            final RecipientInformation recipient = (RecipientInformation)it.next();
            final CMSTypedStream recData = recipient.getContentStream(key, providerName);
            final InputStream ris = recData.getContentStream();
            fromInToOut(ris, bos);

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                  "T7rSxEtuwpbuHQnoVUZahOHVKy/a0uLr9iIh1A3y+yZTZaG505ZJMIAGCSqG" +
                  "SIb3DQEHATAdBglghkgBZQMEAQIEENmkYNbDXiZxJWtq82qIRZKggAQgkOGr" +
                  "1JcTsADStez1eY4+rO4DtyBIyUYQ3pilnbirfPkAAAAAAAAAAAAA");




        CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(envData);


        RecipientInformationStore  recipients = ep.getRecipientInfos();


        assertEquals(ep.getEncryptionAlgOID(), CMSEnvelopedDataGenerator.AES128_CBC);
        
        Collection  c = recipients.getRecipients();
        Iterator    it = c.iterator();


        PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(keyData);

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        ByteArrayOutputStream encodedStream,
        String                expectedOid,
        byte[]                expectedData)
        throws Exception
    {
        CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(encodedStream.toByteArray());
        RecipientInformationStore  recipients = ep.getRecipientInfos();
    
        assertEquals(ep.getEncryptionAlgOID(), expectedOid);
        
        Collection  c = recipients.getRecipients();
        Iterator    it = c.iterator();
        
        while (it.hasNext())

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            out.write(data[i]);
        }
        
        out.close();
        
        CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(bOut.toByteArray());
        RecipientInformationStore  recipients = ep.getRecipientInfos();
        Collection                 c = recipients.getRecipients();
        Iterator                   it = c.iterator();
        
        if (it.hasNext())
        {

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        out.write(data);
        
        out.close();
        
        CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(bOut.toByteArray());
    
        RecipientInformationStore  recipients = ep.getRecipientInfos();
    
        assertEquals(ep.getEncryptionAlgOID(), CMSEnvelopedDataGenerator.AES128_CBC);
        
        Collection  c = recipients.getRecipients();
        Iterator    it = c.iterator();
        
        while (it.hasNext())
        {
            RecipientInformation   recipient = (RecipientInformation)it.next();
    
            assertEquals(recipient.getKeyEncryptionAlgOID(), PKCSObjectIdentifiers.rsaEncryption.getId());
            
            CMSTypedStream recData = recipient.getContentStream(_reciKP.getPrivate(), "BC");
            
            assertEquals(true, Arrays.equals(data, CMSTestUtil.streamToByteArray(recData.getContentStream())));
        }
        
        ep.close();
    }

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        out.write(data);
        
        out.close();
        
        CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(bOut.toByteArray());


        RecipientInformationStore  recipients = ep.getRecipientInfos();


        assertEquals(ep.getEncryptionAlgOID(), CMSEnvelopedDataGenerator.CAST5_CBC);
        
        Collection  c = recipients.getRecipients();
        Iterator    it = c.iterator();
        
        while (it.hasNext())
        {
            RecipientInformation   recipient = (RecipientInformation)it.next();


            assertEquals(recipient.getKeyEncryptionAlgOID(), PKCSObjectIdentifiers.rsaEncryption.getId());
            
            CMSTypedStream recData = recipient.getContentStream(_reciKP.getPrivate(), "SunJCE");
            
            assertEquals(true, Arrays.equals(data, CMSTestUtil.streamToByteArray(recData.getContentStream())));
        }
        
        ep.close();
    }

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                                CMSEnvelopedDataGenerator.DES_EDE3_CBC, "BC");
        out.write(data);
        
        out.close();
         
        CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(bOut.toByteArray());
        
        RecipientInformationStore  recipients = ep.getRecipientInfos();


        assertEquals(ep.getEncryptionAlgOID(), CMSEnvelopedDataGenerator.DES_EDE3_CBC);
        
        Collection  c = recipients.getRecipients();
        Iterator    it = c.iterator();


        while (it.hasNext())
        {
            RecipientInformation   recipient = (RecipientInformation)it.next();


            assertEquals(recipient.getKeyEncryptionAlgOID(), "2.16.840.1.101.3.4.1.25");
            
            CMSTypedStream recData = recipient.getContentStream(kek, "BC");
            
            assertEquals(true, Arrays.equals(data, CMSTestUtil.streamToByteArray(recData.getContentStream())));
        }
        
        ep.close();
    }

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                                CMSEnvelopedDataGenerator.DES_EDE3_CBC, "BC");
        out.write(data);
        
        out.close();
         
        CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(bOut.toByteArray());
        
        RecipientInformationStore  recipients = ep.getRecipientInfos();
    
        assertEquals(ep.getEncryptionAlgOID(), CMSEnvelopedDataGenerator.DES_EDE3_CBC);
        
        RecipientId                recSel = new RecipientId();
        
        recSel.setKeyIdentifier(kekId2);
        
        RecipientInformation       recipient = recipients.get(recSel);
        
        assertEquals(recipient.getKeyEncryptionAlgOID(), "2.16.840.1.101.3.4.1.25");
        
        CMSTypedStream recData = recipient.getContentStream(kek2, "BC");
        
        assertEquals(true, Arrays.equals(data, CMSTestUtil.streamToByteArray(recData.getContentStream())));


        ep.close();
    }

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                                CMSEnvelopedDataGenerator.AES128_CBC, "BC");
        out.write(data);


        out.close();


        CMSEnvelopedDataParser     ep = new CMSEnvelopedDataParser(bOut.toByteArray());


        RecipientInformationStore  recipients = ep.getRecipientInfos();


        assertEquals(ep.getEncryptionAlgOID(), CMSEnvelopedDataGenerator.AES128_CBC);


        RecipientId                recSel = new RecipientId();


        recSel.setIssuer(PrincipalUtil.getIssuerX509Principal(_reciEcCert).getEncoded());
        recSel.setSerialNumber(_reciEcCert.getSerialNumber());


        RecipientInformation       recipient = recipients.get(recSel);


        CMSTypedStream recData = recipient.getContentStream(_reciEcKP.getPrivate(), "BC");


        assertEquals(true, Arrays.equals(data, CMSTestUtil.streamToByteArray(recData.getContentStream())));


        ep.close();
    }

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    }


    public void testOriginatorInfo()
        throws Exception
    {
        CMSEnvelopedDataParser env = new CMSEnvelopedDataParser(CMSSampleMessages.originatorMessage);


        env.getRecipientInfos();


        assertEquals(CMSEnvelopedDataGenerator.DES_EDE3_CBC, env.getEncryptionAlgOID());
    }

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Related Classes of org.bouncycastle.cms.CMSEnvelopedDataParser

org.bouncycastle.asn1.ASN1EncodableVector

org.bouncycastle.asn1.ASN1SequenceParser

org.bouncycastle.asn1.ASN1SetParser

org.bouncycastle.asn1.cms.AttributeTable

org.bouncycastle.asn1.cms.EncryptedContentInfoParser

org.bouncycastle.asn1.cms.EnvelopedDataParser

org.bouncycastle.asn1.cms.RecipientInfo

org.bouncycastle.asn1.DEREncodable

org.bouncycastle.asn1.DERSet

org.bouncycastle.cms.test.EnvelopedDataStreamTest

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