Examples of BcPublicKeyDataDecryptorFactory

org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory
A decryptor factory for handling public key decryption operations.

Examples of org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory


        PGPEncryptedDataList       encList = (PGPEncryptedDataList)pgpF.nextObject();


        PGPPublicKeyEncryptedData  encP = (PGPPublicKeyEncryptedData)encList.get(0);


        InputStream clear = encP.getDataStream(new BcPublicKeyDataDecryptorFactory(pgpPrivKey));


        PGPObjectFactory pgpFact = new PGPObjectFactory(clear);


        checkLiteralData((PGPLiteralData)pgpFact.nextObject(), text);

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Examples of org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory

    
        PGPPublicKeyEncryptedData    encP = (PGPPublicKeyEncryptedData)encList.get(0);
        
        pgpPrivKey = pgpPriv.getSecretKey(encP.getKeyID()).extractPrivateKey(new BcPBESecretKeyDecryptorBuilder(new BcPGPDigestCalculatorProvider()).build(pass));


        InputStream clear = encP.getDataStream(new BcPublicKeyDataDecryptorFactory(pgpPrivKey));
                 
        pgpFact = new PGPObjectFactory(clear, new BcKeyFingerprintCalculator());


        c1 = (PGPCompressedData)pgpFact.nextObject();


        pgpFact = new PGPObjectFactory(c1.getDataStream(), new BcKeyFingerprintCalculator());
        
        PGPLiteralData    ld = (PGPLiteralData)pgpFact.nextObject();
    
        bOut = new ByteArrayOutputStream();
        
        if (!ld.getFileName().equals("test.txt"))
        {
            throw new RuntimeException("wrong filename in packet");
        }


        InputStream    inLd = ld.getDataStream();
        
        while ((ch = inLd.read()) >= 0)
        {
            bOut.write(ch);
        }


        if (!areEqual(bOut.toByteArray(), text))
        {
            fail("wrong plain text in decrypted packet");
        }


        //
        // encrypt - short message
        //
        byte[]    shortText = { (byte)'h', (byte)'e', (byte)'l', (byte)'l', (byte)'o' };
    
        ByteArrayOutputStream        cbOut = new ByteArrayOutputStream();
        PGPEncryptedDataGenerator    cPk = new PGPEncryptedDataGenerator(new BcPGPDataEncryptorBuilder(SymmetricKeyAlgorithmTags.CAST5).setSecureRandom(new SecureRandom()));
        PGPPublicKey                 puK = pgpPriv.getSecretKey(encP.getKeyID()).getPublicKey();
        
        cPk.addMethod(new BcPublicKeyKeyEncryptionMethodGenerator(puK));
        
        OutputStream    cOut = cPk.open(new UncloseableOutputStream(cbOut), shortText.length);


        cOut.write(shortText);


        cOut.close();


        pgpF = new PGPObjectFactory(cbOut.toByteArray(), new BcKeyFingerprintCalculator());


        encList = (PGPEncryptedDataList)pgpF.nextObject();
    
        encP = (PGPPublicKeyEncryptedData)encList.get(0);
        
        pgpPrivKey = pgpPriv.getSecretKey(encP.getKeyID()).extractPrivateKey(new BcPBESecretKeyDecryptorBuilder(new BcPGPDigestCalculatorProvider()).build(pass));


        PublicKeyDataDecryptorFactory dataDecryptorFactory = new BcPublicKeyDataDecryptorFactory(pgpPrivKey);


        if (encP.getSymmetricAlgorithm(dataDecryptorFactory) != SymmetricKeyAlgorithmTags.CAST5)
        {
            fail("symmetric algorithm mismatch");
        }


        clear = encP.getDataStream(dataDecryptorFactory);
        
        bOut.reset();
        
        while ((ch = clear.read()) >= 0)
        {
            bOut.write(ch);
        }


        out = bOut.toByteArray();


        if (!areEqual(out, shortText))
        {
            fail("wrong plain text in generated short text packet");
        }
        
        //
        // encrypt
        //
        cbOut = new ByteArrayOutputStream();
        cPk = new PGPEncryptedDataGenerator(new BcPGPDataEncryptorBuilder(SymmetricKeyAlgorithmTags.CAST5).setSecureRandom(new SecureRandom()));
        puK = pgpPriv.getSecretKey(encP.getKeyID()).getPublicKey();
        
        cPk.addMethod(new BcPublicKeyKeyEncryptionMethodGenerator(puK));


        cOut = cPk.open(new UncloseableOutputStream(cbOut), text.length);


        cOut.write(text);


        cOut.close();


        pgpF = new PGPObjectFactory(cbOut.toByteArray());


        encList = (PGPEncryptedDataList)pgpF.nextObject();
    
        encP = (PGPPublicKeyEncryptedData)encList.get(0);
        
        pgpPrivKey = pgpPriv.getSecretKey(encP.getKeyID()).extractPrivateKey(new BcPBESecretKeyDecryptorBuilder(new BcPGPDigestCalculatorProvider()).build(pass));


        clear = encP.getDataStream(new BcPublicKeyDataDecryptorFactory(pgpPrivKey));
        
        bOut.reset();
        
        while ((ch = clear.read()) >= 0)
        {

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Examples of org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory


            PGPEncryptedDataList            encList = (PGPEncryptedDataList)pgpF.nextObject();
        
            PGPPublicKeyEncryptedData    encP = (PGPPublicKeyEncryptedData)encList.get(0);


            InputStream clear = encP.getDataStream(new BcPublicKeyDataDecryptorFactory(pgpPrivKey));
                     
            pgpFact = new PGPObjectFactory(clear);


            c1 = (PGPCompressedData)pgpFact.nextObject();


            pgpFact = new PGPObjectFactory(c1.getDataStream());
            
            PGPLiteralData    ld = (PGPLiteralData)pgpFact.nextObject();
        
            bOut = new ByteArrayOutputStream();
            
            if (!ld.getFileName().equals("test.txt"))
            {
                throw new RuntimeException("wrong filename in packet");
            }


            InputStream    inLd = ld.getDataStream();
            
            while ((ch = inLd.read()) >= 0)
            {
                bOut.write(ch);
            }


            if (!areEqual(bOut.toByteArray(), text))
            {
                fail("wrong plain text in decrypted packet");
            }
            
            //
            // signed and encrypted message
            //
            pgpF = new PGPObjectFactory(signedAndEncMessage);


            encList = (PGPEncryptedDataList)pgpF.nextObject();
        
            encP = (PGPPublicKeyEncryptedData)encList.get(0);


            clear = encP.getDataStream(new BcPublicKeyDataDecryptorFactory(pgpPrivKey));
                     
            pgpFact = new PGPObjectFactory(clear);


            c1 = (PGPCompressedData)pgpFact.nextObject();


            pgpFact = new PGPObjectFactory(c1.getDataStream());
            
            p1 = (PGPOnePassSignatureList)pgpFact.nextObject();
            
            ops = p1.get(0);
            
            ld = (PGPLiteralData)pgpFact.nextObject();
        
            bOut = new ByteArrayOutputStream();
            
            if (!ld.getFileName().equals("test.txt"))
            {
                throw new RuntimeException("wrong filename in packet");
            }


            inLd = ld.getDataStream();
            
            //
            // note: we use the DSA public key here.
            //
            ops.init(new BcPGPContentVerifierBuilderProvider(), pgpPub.getPublicKey());
            
            while ((ch = inLd.read()) >= 0)
            {
                ops.update((byte)ch);
                bOut.write(ch);
            }


            p3 = (PGPSignatureList)pgpFact.nextObject();


            if (!ops.verify(p3.get(0)))
            {
                fail("Failed signature check");
            }
            
            if (!areEqual(bOut.toByteArray(), text))
            {
                fail("wrong plain text in decrypted packet");
            }
            
            //
            // encrypt
            //
            ByteArrayOutputStream        cbOut = new ByteArrayOutputStream();
            PGPEncryptedDataGenerator    cPk = new PGPEncryptedDataGenerator(new BcPGPDataEncryptorBuilder(SymmetricKeyAlgorithmTags.TRIPLE_DES).setSecureRandom(new SecureRandom()));
            PGPPublicKey                        puK = sKey.getSecretKey(pgpKeyID).getPublicKey();
            
            cPk.addMethod(new BcPublicKeyKeyEncryptionMethodGenerator(puK));
            
            OutputStream    cOut = cPk.open(new UncloseableOutputStream(cbOut), bOut.toByteArray().length);


            cOut.write(text);


            cOut.close();


            pgpF = new PGPObjectFactory(cbOut.toByteArray());


            encList = (PGPEncryptedDataList)pgpF.nextObject();
        
            encP = (PGPPublicKeyEncryptedData)encList.get(0);
            
            pgpPrivKey = sKey.getSecretKey(pgpKeyID).extractPrivateKey(new BcPBESecretKeyDecryptorBuilder(new BcPGPDigestCalculatorProvider()).build(pass));


            clear = encP.getDataStream(new BcPublicKeyDataDecryptorFactory(pgpPrivKey));
            
            bOut.reset();
            
            while ((ch = clear.read()) >= 0)
            {
                bOut.write(ch);
            }


            out = bOut.toByteArray();


            if (!areEqual(out, text))
            {
                fail("wrong plain text in generated packet");
            }
            
            //
            // use of PGPKeyPair
            //
            BigInteger g = new BigInteger("153d5d6172adb43045b68ae8e1de1070b6137005686d29d3d73a7749199681ee5b212c9b96bfdcfa5b20cd5e3fd2044895d609cf9b410b7a0f12ca1cb9a428cc", 16);
            BigInteger p = new BigInteger("9494fec095f3b85ee286542b3836fc81a5dd0a0349b4c239dd38744d488cf8e31db8bcb7d33b41abb9e5a33cca9144b1cef332c94bf0573bf047a3aca98cdf3b", 16);


            KeyPairGenerator       kpg = KeyPairGenerator.getInstance("ElGamal", "BC");
            
            ElGamalParameterSpec   elParams = new ElGamalParameterSpec(p, g);
            
            kpg.initialize(elParams);
            
            KeyPair kp = kpg.generateKeyPair();
            
            PGPKeyPair    pgpKp = new PGPKeyPair(PGPPublicKey.ELGAMAL_GENERAL , kp.getPublic(), kp.getPrivate(), new Date());
            
            PGPPublicKey k1 = pgpKp.getPublicKey();
            
            PGPPrivateKey k2 = pgpKp.getPrivateKey();






            // Test bug with ElGamal P size != 0 mod 8 (don't use these sizes at home!)
            SecureRandom random = new SecureRandom();
            for (int pSize = 257; pSize < 264; ++pSize)
            {
                // Generate some parameters of the given size
                AlgorithmParameterGenerator a = AlgorithmParameterGenerator.getInstance("ElGamal", "BC");
                a.init(pSize, new SecureRandom());
                AlgorithmParameters params = a.generateParameters();


                DHParameterSpec elP = (DHParameterSpec)params.getParameterSpec(DHParameterSpec.class);
                KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ElGamal", "BC");


                keyGen.initialize(elP);




                // Run a short encrypt/decrypt test with random key for the given parameters
                kp = keyGen.generateKeyPair();


                PGPKeyPair elGamalKeyPair = new PGPKeyPair(
                    PublicKeyAlgorithmTags.ELGAMAL_GENERAL, kp, new Date());


                cPk = new PGPEncryptedDataGenerator(new BcPGPDataEncryptorBuilder(SymmetricKeyAlgorithmTags.CAST5).setSecureRandom(random));


                puK = elGamalKeyPair.getPublicKey();


                cPk.addMethod(new BcPublicKeyKeyEncryptionMethodGenerator(puK));


                cbOut = new ByteArrayOutputStream();


                cOut = cPk.open(cbOut, text.length);


                cOut.write(text);


                cOut.close();


                pgpF = new PGPObjectFactory(cbOut.toByteArray());


                encList = (PGPEncryptedDataList)pgpF.nextObject();


                encP = (PGPPublicKeyEncryptedData)encList.get(0);


                pgpPrivKey = elGamalKeyPair.getPrivateKey();


                // Note: This is where an exception would be expected if the P size causes problems
                clear = encP.getDataStream(new BcPublicKeyDataDecryptorFactory(pgpPrivKey));


                ByteArrayOutputStream dec = new ByteArrayOutputStream();


                int b;
                while ((b = clear.read()) >= 0)

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