diff options
Diffstat (limited to 'pg/src/test/jdk1.1/org/spongycastle/openpgp/test/PGPDSAElGamalTest.java')
| -rw-r--r-- | pg/src/test/jdk1.1/org/spongycastle/openpgp/test/PGPDSAElGamalTest.java | 562 |
1 files changed, 562 insertions, 0 deletions
diff --git a/pg/src/test/jdk1.1/org/spongycastle/openpgp/test/PGPDSAElGamalTest.java b/pg/src/test/jdk1.1/org/spongycastle/openpgp/test/PGPDSAElGamalTest.java new file mode 100644 index 00000000..75448cf7 --- /dev/null +++ b/pg/src/test/jdk1.1/org/spongycastle/openpgp/test/PGPDSAElGamalTest.java @@ -0,0 +1,562 @@ +package org.spongycastle.openpgp.test; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.InputStream; +import java.io.OutputStream; +import java.math.BigInteger; +import java.security.AlgorithmParameterGenerator; +import java.security.AlgorithmParameters; +import java.security.KeyPair; +import java.security.KeyPairGenerator; +import java.security.PublicKey; +import java.security.SecureRandom; +import java.security.Security; +import java.util.Date; +import java.util.Iterator; + +import javax.crypto.Cipher; +import javax.crypto.spec.DHParameterSpec; + +import org.spongycastle.bcpg.BCPGOutputStream; +import org.spongycastle.bcpg.PublicKeyAlgorithmTags; +import org.spongycastle.bcpg.SymmetricKeyAlgorithmTags; +import org.spongycastle.jce.provider.BouncyCastleProvider; +import org.spongycastle.jce.spec.ElGamalParameterSpec; +import org.spongycastle.openpgp.PGPCompressedData; +import org.spongycastle.openpgp.PGPCompressedDataGenerator; +import org.spongycastle.openpgp.PGPEncryptedDataGenerator; +import org.spongycastle.openpgp.PGPEncryptedDataList; +import org.spongycastle.openpgp.PGPException; +import org.spongycastle.openpgp.PGPKeyPair; +import org.spongycastle.openpgp.PGPLiteralData; +import org.spongycastle.openpgp.PGPLiteralDataGenerator; +import org.spongycastle.openpgp.PGPOnePassSignature; +import org.spongycastle.openpgp.PGPOnePassSignatureList; +import org.spongycastle.openpgp.PGPPrivateKey; +import org.spongycastle.openpgp.PGPPublicKey; +import org.spongycastle.openpgp.PGPPublicKeyEncryptedData; +import org.spongycastle.openpgp.PGPPublicKeyRing; +import org.spongycastle.openpgp.PGPSecretKeyRing; +import org.spongycastle.openpgp.PGPSignature; +import org.spongycastle.openpgp.PGPSignatureGenerator; +import org.spongycastle.openpgp.PGPSignatureList; +import org.spongycastle.openpgp.PGPUtil; +import org.spongycastle.openpgp.jcajce.JcaPGPObjectFactory; +import org.spongycastle.openpgp.operator.jcajce.JcaKeyFingerprintCalculator; +import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentSignerBuilder; +import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentVerifierBuilderProvider; +import org.spongycastle.openpgp.operator.jcajce.JcaPGPDigestCalculatorProviderBuilder; +import org.spongycastle.openpgp.operator.jcajce.JcaPGPKeyConverter; +import org.spongycastle.openpgp.operator.jcajce.JcaPGPKeyPair; +import org.spongycastle.openpgp.operator.jcajce.JcePBESecretKeyDecryptorBuilder; +import org.spongycastle.openpgp.operator.jcajce.JcePGPDataEncryptorBuilder; +import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyDataDecryptorFactoryBuilder; +import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyKeyEncryptionMethodGenerator; +import org.spongycastle.util.encoders.Base64; +import org.spongycastle.util.test.SimpleTest; +import org.spongycastle.util.test.UncloseableOutputStream; + +public class PGPDSAElGamalTest + extends SimpleTest +{ + + byte[] testPubKeyRing = + Base64.decode( + "mQGiBEAR8jYRBADNifuSopd20JOQ5x30ljIaY0M6927+vo09NeNxS3KqItba" + + "nz9o5e2aqdT0W1xgdHYZmdElOHTTsugZxdXTEhghyxoo3KhVcNnTABQyrrvX" + + "qouvmP2fEDEw0Vpyk+90BpyY9YlgeX/dEA8OfooRLCJde/iDTl7r9FT+mts8" + + "g3azjwCgx+pOLD9LPBF5E4FhUOdXISJ0f4EEAKXSOi9nZzajpdhe8W2ZL9gc" + + "BpzZi6AcrRZBHOEMqd69gtUxA4eD8xycUQ42yH89imEcwLz8XdJ98uHUxGJi" + + "qp6hq4oakmw8GQfiL7yQIFgaM0dOAI9Afe3m84cEYZsoAFYpB4/s9pVMpPRH" + + "NsVspU0qd3NHnSZ0QXs8L8DXGO1uBACjDUj+8GsfDCIP2QF3JC+nPUNa0Y5t" + + "wKPKl+T8hX/0FBD7fnNeC6c9j5Ir/Fp/QtdaDAOoBKiyNLh1JaB1NY6US5zc" + + "qFks2seZPjXEiE6OIDXYra494mjNKGUobA4hqT2peKWXt/uBcuL1mjKOy8Qf" + + "JxgEd0MOcGJO+1PFFZWGzLQ3RXJpYyBILiBFY2hpZG5hICh0ZXN0IGtleSBv" + + "bmx5KSA8ZXJpY0Bib3VuY3ljYXN0bGUub3JnPohZBBMRAgAZBQJAEfI2BAsH" + + "AwIDFQIDAxYCAQIeAQIXgAAKCRAOtk6iUOgnkDdnAKC/CfLWikSBdbngY6OK" + + "5UN3+o7q1ACcDRqjT3yjBU3WmRUNlxBg3tSuljmwAgAAuQENBEAR8jgQBAC2" + + "kr57iuOaV7Ga1xcU14MNbKcA0PVembRCjcVjei/3yVfT/fuCVtGHOmYLEBqH" + + "bn5aaJ0P/6vMbLCHKuN61NZlts+LEctfwoya43RtcubqMc7eKw4k0JnnoYgB" + + "ocLXOtloCb7jfubOsnfORvrUkK0+Ne6anRhFBYfaBmGU75cQgwADBQP/XxR2" + + "qGHiwn+0YiMioRDRiIAxp6UiC/JQIri2AKSqAi0zeAMdrRsBN7kyzYVVpWwN" + + "5u13gPdQ2HnJ7d4wLWAuizUdKIQxBG8VoCxkbipnwh2RR4xCXFDhJrJFQUm+" + + "4nKx9JvAmZTBIlI5Wsi5qxst/9p5MgP3flXsNi1tRbTmRhqIRgQYEQIABgUC" + + "QBHyOAAKCRAOtk6iUOgnkBStAJoCZBVM61B1LG2xip294MZecMtCwQCbBbsk" + + "JVCXP0/Szm05GB+WN+MOCT2wAgAA"); + + byte[] testPrivKeyRing = + Base64.decode( + "lQHhBEAR8jYRBADNifuSopd20JOQ5x30ljIaY0M6927+vo09NeNxS3KqItba" + + "nz9o5e2aqdT0W1xgdHYZmdElOHTTsugZxdXTEhghyxoo3KhVcNnTABQyrrvX" + + "qouvmP2fEDEw0Vpyk+90BpyY9YlgeX/dEA8OfooRLCJde/iDTl7r9FT+mts8" + + "g3azjwCgx+pOLD9LPBF5E4FhUOdXISJ0f4EEAKXSOi9nZzajpdhe8W2ZL9gc" + + "BpzZi6AcrRZBHOEMqd69gtUxA4eD8xycUQ42yH89imEcwLz8XdJ98uHUxGJi" + + "qp6hq4oakmw8GQfiL7yQIFgaM0dOAI9Afe3m84cEYZsoAFYpB4/s9pVMpPRH" + + "NsVspU0qd3NHnSZ0QXs8L8DXGO1uBACjDUj+8GsfDCIP2QF3JC+nPUNa0Y5t" + + "wKPKl+T8hX/0FBD7fnNeC6c9j5Ir/Fp/QtdaDAOoBKiyNLh1JaB1NY6US5zc" + + "qFks2seZPjXEiE6OIDXYra494mjNKGUobA4hqT2peKWXt/uBcuL1mjKOy8Qf" + + "JxgEd0MOcGJO+1PFFZWGzP4DAwLeUcsVxIC2s2Bb9ab2XD860TQ2BI2rMD/r" + + "7/psx9WQ+Vz/aFAT3rXkEJ97nFeqEACgKmUCAEk9939EwLQ3RXJpYyBILiBF" + + "Y2hpZG5hICh0ZXN0IGtleSBvbmx5KSA8ZXJpY0Bib3VuY3ljYXN0bGUub3Jn" + + "PohZBBMRAgAZBQJAEfI2BAsHAwIDFQIDAxYCAQIeAQIXgAAKCRAOtk6iUOgn" + + "kDdnAJ9Ala3OcwEV1DbK906CheYWo4zIQwCfUqUOLMp/zj6QAk02bbJAhV1r" + + "sAewAgAAnQFYBEAR8jgQBAC2kr57iuOaV7Ga1xcU14MNbKcA0PVembRCjcVj" + + "ei/3yVfT/fuCVtGHOmYLEBqHbn5aaJ0P/6vMbLCHKuN61NZlts+LEctfwoya" + + "43RtcubqMc7eKw4k0JnnoYgBocLXOtloCb7jfubOsnfORvrUkK0+Ne6anRhF" + + "BYfaBmGU75cQgwADBQP/XxR2qGHiwn+0YiMioRDRiIAxp6UiC/JQIri2AKSq" + + "Ai0zeAMdrRsBN7kyzYVVpWwN5u13gPdQ2HnJ7d4wLWAuizUdKIQxBG8VoCxk" + + "bipnwh2RR4xCXFDhJrJFQUm+4nKx9JvAmZTBIlI5Wsi5qxst/9p5MgP3flXs" + + "Ni1tRbTmRhr+AwMC3lHLFcSAtrNg/EiWFLAnKNXH27zjwuhje8u2r+9iMTYs" + + "GjbRxaxRY0GKRhttCwqe2BC0lHhzifdlEcc9yjIjuKfepG2fnnSIRgQYEQIA" + + "BgUCQBHyOAAKCRAOtk6iUOgnkBStAJ9HFejVtVJ/A9LM/mDPe0ExhEXt/QCg" + + "m/KM7hJ/JrfnLQl7IaZsdg1F6vCwAgAA"); + + byte[] encMessage = + Base64.decode( + "hQEOAynbo4lhNjcHEAP/dgCkMtPB6mIgjFvNiotjaoh4sAXf4vFNkSeehQ2c" + + "r+IMt9CgIYodJI3FoJXxOuTcwesqTp5hRzgUBJS0adLDJwcNubFMy0M2tp5o" + + "KTWpXulIiqyO6f5jI/oEDHPzFoYgBmR4x72l/YpMy8UoYGtNxNvR7LVOfqJv" + + "uDY/71KMtPQEAIadOWpf1P5Td+61Zqn2VH2UV7H8eI6hGa6Lsy4sb9iZNE7f" + + "c+spGJlgkiOt8TrQoq3iOK9UN9nHZLiCSIEGCzsEn3uNuorD++Qs065ij+Oy" + + "36TKeuJ+38CfT7u47dEshHCPqWhBKEYrxZWHUJU/izw2Q1Yxd2XRxN+nafTL" + + "X1fQ0lABQUASa18s0BkkEERIdcKQXVLEswWcGqWNv1ZghC7xO2VDBX4HrPjp" + + "drjL63p2UHzJ7/4gPWGGtnqq1Xita/1mrImn7pzLThDWiT55vjw6Hw=="); + + byte[] signedAndEncMessage = + Base64.decode( + "hQEOAynbo4lhNjcHEAP+K20MVhzdX57hf/cU8TH0prP0VePr9mmeBedzqqMn" + + "fp2p8Zb68zmcMlI/WiL5XMNLYRmCgEcXyWbKdP/XV9m9LDBe1CMAGrkCeGBy" + + "je69IQQ5LS9vDPyEMF4iAAv/EqACjqHkizdY/a/FRx/t2ioXYdEC2jA6kS9C" + + "McpsNz16DE8EAIk3uKn4bGo/+15TXkyFYzW5Cf71SfRoHNmU2zAI93zhjN+T" + + "B7mGJwWXzsMkIO6FkMU5TCSrwZS3DBWCIaJ6SYoaawE/C/2j9D7bX1Jv8kum" + + "4cq+eZM7z6JYs6xend+WAwittpUxbEiyC2AJb3fBSXPAbLqWd6J6xbZZ7GDK" + + "r2Ca0pwBxwGhbMDyi2zpHLzw95H7Ah2wMcGU6kMLB+hzBSZ6mSTGFehqFQE3" + + "2BnAj7MtnbghiefogacJ891jj8Y2ggJeKDuRz8j2iICaTOy+Y2rXnnJwfYzm" + + "BMWcd2h1C5+UeBJ9CrrLniCCI8s5u8z36Rno3sfhBnXdRmWSxExXtocbg1Ht" + + "dyiThf6TK3W29Yy/T6x45Ws5zOasaJdsFKM="); + char[] pass = { 'h', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd' }; + + public void performTest() + throws Exception + { + try + { + PGPPublicKey pubKey = null; + + PGPUtil.setDefaultProvider("SC"); + + // + // Read the public key + // + JcaPGPObjectFactory pgpFact = new JcaPGPObjectFactory(testPubKeyRing); + + PGPPublicKeyRing pgpPub = (PGPPublicKeyRing)pgpFact.nextObject(); + + pubKey = pgpPub.getPublicKey(); + + if (pubKey.getBitStrength() != 1024) + { + fail("failed - key strength reported incorrectly."); + } + + // + // Read the private key + // + PGPSecretKeyRing sKey = new PGPSecretKeyRing(testPrivKeyRing, new JcaKeyFingerprintCalculator()); + PGPPrivateKey pgpPrivKey = sKey.getSecretKey().extractPrivateKey(new JcePBESecretKeyDecryptorBuilder(new JcaPGPDigestCalculatorProviderBuilder().setProvider("SC").build()).setProvider("SC").build(pass)); + + // + // signature generation + // + String data = "hello world!"; + ByteArrayOutputStream bOut = new ByteArrayOutputStream(); + ByteArrayInputStream testIn = new ByteArrayInputStream(data.getBytes()); + PGPSignatureGenerator sGen = new PGPSignatureGenerator(new JcaPGPContentSignerBuilder(PGPPublicKey.DSA, PGPUtil.SHA1).setProvider("SC")); + + sGen.init(PGPSignature.BINARY_DOCUMENT, pgpPrivKey); + + PGPCompressedDataGenerator cGen = new PGPCompressedDataGenerator( + PGPCompressedData.ZIP); + + BCPGOutputStream bcOut = new BCPGOutputStream( + cGen.open(new UncloseableOutputStream(bOut))); + + sGen.generateOnePassVersion(false).encode(bcOut); + + PGPLiteralDataGenerator lGen = new PGPLiteralDataGenerator(); + + Date testDate = new Date((System.currentTimeMillis() / 1000) * 1000); + OutputStream lOut = lGen.open( + new UncloseableOutputStream(bcOut), + PGPLiteralData.BINARY, + "_CONSOLE", + data.getBytes().length, + testDate); + + int ch; + while ((ch = testIn.read()) >= 0) + { + lOut.write(ch); + sGen.update((byte)ch); + } + + lGen.close(); + + sGen.generate().encode(bcOut); + + cGen.close(); + + // + // verify generated signature + // + pgpFact = new JcaPGPObjectFactory(bOut.toByteArray()); + + PGPCompressedData c1 = (PGPCompressedData)pgpFact.nextObject(); + + pgpFact = new JcaPGPObjectFactory(c1.getDataStream()); + + PGPOnePassSignatureList p1 = (PGPOnePassSignatureList)pgpFact.nextObject(); + + PGPOnePassSignature ops = p1.get(0); + + PGPLiteralData p2 = (PGPLiteralData)pgpFact.nextObject(); + if (!p2.getModificationTime().equals(testDate)) + { + fail("Modification time not preserved"); + } + + InputStream dIn = p2.getInputStream(); + + ops.init(new JcaPGPContentVerifierBuilderProvider().setProvider("SC"), pubKey); + + while ((ch = dIn.read()) >= 0) + { + ops.update((byte)ch); + } + + PGPSignatureList p3 = (PGPSignatureList)pgpFact.nextObject(); + + if (!ops.verify(p3.get(0))) + { + fail("Failed generated signature check"); + } + + // + // test encryption + // + + // + // find a key suitable for encryption + // + long pgpKeyID = 0; + PublicKey pKey = null; + + Iterator it = pgpPub.getPublicKeys(); + while (it.hasNext()) + { + PGPPublicKey pgpKey = (PGPPublicKey)it.next(); + + if (pgpKey.getAlgorithm() == PGPPublicKey.ELGAMAL_ENCRYPT + || pgpKey.getAlgorithm() == PGPPublicKey.ELGAMAL_GENERAL) + { + pKey = new JcaPGPKeyConverter().setProvider("SC").getPublicKey(pgpKey); + pgpKeyID = pgpKey.getKeyID(); + if (pgpKey.getBitStrength() != 1024) + { + fail("failed - key strength reported incorrectly."); + } + + // + // verify the key + // + + } + } + + Cipher c = Cipher.getInstance("ElGamal/None/PKCS1Padding", "SC"); + + c.init(Cipher.ENCRYPT_MODE, pKey); + + byte[] in = "hello world".getBytes(); + + byte[] out = c.doFinal(in); + + pgpPrivKey = sKey.getSecretKey(pgpKeyID).extractPrivateKey(new JcePBESecretKeyDecryptorBuilder(new JcaPGPDigestCalculatorProviderBuilder().setProvider("SC").build()).setProvider("SC").build(pass)); + + c.init(Cipher.DECRYPT_MODE, new JcaPGPKeyConverter().setProvider("SC").getPrivateKey(pgpPrivKey)); + + out = c.doFinal(out); + + if (!areEqual(in, out)) + { + fail("decryption failed."); + } + + // + // encrypted message + // + byte[] text = { (byte)'h', (byte)'e', (byte)'l', (byte)'l', (byte)'o', (byte)' ', (byte)'w', (byte)'o', (byte)'r', (byte)'l', (byte)'d', (byte)'!', (byte)'\n' }; + + JcaPGPObjectFactory pgpF = new JcaPGPObjectFactory(encMessage); + + PGPEncryptedDataList encList = (PGPEncryptedDataList)pgpF.nextObject(); + + PGPPublicKeyEncryptedData encP = (PGPPublicKeyEncryptedData)encList.get(0); + + InputStream clear = encP.getDataStream(new JcePublicKeyDataDecryptorFactoryBuilder().setProvider("SC").build(pgpPrivKey)); + + pgpFact = new JcaPGPObjectFactory(clear); + + c1 = (PGPCompressedData)pgpFact.nextObject(); + + pgpFact = new JcaPGPObjectFactory(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 JcaPGPObjectFactory(signedAndEncMessage); + + encList = (PGPEncryptedDataList)pgpF.nextObject(); + + encP = (PGPPublicKeyEncryptedData)encList.get(0); + + clear = encP.getDataStream(new JcePublicKeyDataDecryptorFactoryBuilder().setProvider("SC").build(pgpPrivKey)); + + pgpFact = new JcaPGPObjectFactory(clear); + + c1 = (PGPCompressedData)pgpFact.nextObject(); + + pgpFact = new JcaPGPObjectFactory(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 JcaPGPContentVerifierBuilderProvider().setProvider("SC"), 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 JcePGPDataEncryptorBuilder(SymmetricKeyAlgorithmTags.TRIPLE_DES).setSecureRandom(new SecureRandom()).setProvider("SC")); + PGPPublicKey puK = sKey.getSecretKey(pgpKeyID).getPublicKey(); + + cPk.addMethod(new JcePublicKeyKeyEncryptionMethodGenerator(puK).setProvider("SC")); + + OutputStream cOut = cPk.open(new UncloseableOutputStream(cbOut), bOut.toByteArray().length); + + cOut.write(text); + + cOut.close(); + + pgpF = new JcaPGPObjectFactory(cbOut.toByteArray()); + + encList = (PGPEncryptedDataList)pgpF.nextObject(); + + encP = (PGPPublicKeyEncryptedData)encList.get(0); + + pgpPrivKey = sKey.getSecretKey(pgpKeyID).extractPrivateKey(new JcePBESecretKeyDecryptorBuilder(new JcaPGPDigestCalculatorProviderBuilder().setProvider("SC").build()).setProvider("SC").build(pass)); + + clear = encP.getDataStream(new JcePublicKeyDataDecryptorFactoryBuilder().setProvider("SC").build(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", "SC"); + + ElGamalParameterSpec elParams = new ElGamalParameterSpec(p, g); + + kpg.initialize(512); + + KeyPair kp = kpg.generateKeyPair(); + + PGPKeyPair pgpKp = new JcaPGPKeyPair(PGPPublicKey.ELGAMAL_GENERAL, kp, 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", "SC"); + a.init(pSize, new SecureRandom()); + AlgorithmParameters params = a.generateParameters(); + + DHParameterSpec elP = (DHParameterSpec)params.getParameterSpec(DHParameterSpec.class); + KeyPairGenerator keyGen = KeyPairGenerator.getInstance("ElGamal", "SC"); + + keyGen.initialize(512); + + + // Run a short encrypt/decrypt test with random key for the given parameters + kp = keyGen.generateKeyPair(); + + PGPKeyPair elGamalKeyPair = new JcaPGPKeyPair( + PublicKeyAlgorithmTags.ELGAMAL_GENERAL, kp, new Date()); + + cPk = new PGPEncryptedDataGenerator(new JcePGPDataEncryptorBuilder(SymmetricKeyAlgorithmTags.CAST5).setSecureRandom(new SecureRandom()).setProvider("SC")); + + puK = elGamalKeyPair.getPublicKey(); + + cPk.addMethod(new JcePublicKeyKeyEncryptionMethodGenerator(puK).setProvider("SC")); + + cbOut = new ByteArrayOutputStream(); + + cOut = cPk.open(cbOut, text.length); + + cOut.write(text); + + cOut.close(); + + pgpF = new JcaPGPObjectFactory(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 JcePublicKeyDataDecryptorFactoryBuilder().setProvider("SC").build(pgpPrivKey)); + + ByteArrayOutputStream dec = new ByteArrayOutputStream(); + + int b; + while ((b = clear.read()) >= 0) + { + dec.write(b); + } + + byte[] decText = dec.toByteArray(); + + if (!areEqual(text, decText)) + { + fail("decrypted message incorrect"); + } + } + + // check sub key encoding + + it = pgpPub.getPublicKeys(); + while (it.hasNext()) + { + PGPPublicKey pgpKey = (PGPPublicKey)it.next(); + + if (!pgpKey.isMasterKey()) + { + byte[] kEnc = pgpKey.getEncoded(); + + JcaPGPObjectFactory objF = new JcaPGPObjectFactory(kEnc); + + PGPPublicKey k = (PGPPublicKey)objF.nextObject(); + + pKey = new JcaPGPKeyConverter().setProvider("SC").getPublicKey(k); + pgpKeyID = k.getKeyID(); + if (k.getBitStrength() != 1024) + { + fail("failed - key strength reported incorrectly."); + } + + if (objF.nextObject() != null) + { + fail("failed - stream not fully parsed."); + } + } + } + + } + catch (PGPException e) + { + fail("exception: " + e.getMessage(), e.getUnderlyingException()); + } + } + + public String getName() + { + return "PGPDSAElGamalTest"; + } + + public static void main( + String[] args) + { + Security.addProvider(new BouncyCastleProvider()); + + runTest(new PGPDSAElGamalTest()); + } +} |