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using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using NUnit.Framework;
using Org.BouncyCastle.Asn1.Sec;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.Encoders;
using Org.BouncyCastle.Utilities.Test;
namespace Org.BouncyCastle.Bcpg.OpenPgp.Tests
{
[TestFixture]
public class PgpECDHTest
: SimpleTest
{
private static readonly byte[] testPubKey =
Base64.Decode(
"mFIEUb4GwBMIKoZIzj0DAQcCAwS8p3TFaRAx58qCG63W+UNthXBPSJDnVDPTb/sT" +
"iXePaAZ/Gh1GKXTq7k6ab/67MMeVFp/EdySumqdWLtvceFKstFBUZXN0IEVDRFNB" +
"LUVDREggKEtleSBhbmQgc3Via2V5IGFyZSAyNTYgYml0cyBsb25nKSA8dGVzdC5l" +
"Y2RzYS5lY2RoQGV4YW1wbGUuY29tPoh6BBMTCAAiBQJRvgbAAhsDBgsJCAcDAgYV" +
"CAIJCgsEFgIDAQIeAQIXgAAKCRD3wDlWjFo9U5O2AQDi89NO6JbaIObC63jMMWsi" +
"AaQHrBCPkDZLibgNv73DLgD/faouH4YZJs+cONQBPVnP1baG1NpWR5ppN3JULFcr" +
"hcq4VgRRvgbAEggqhkjOPQMBBwIDBLtY8Nmfz0zSEa8C1snTOWN+VcT8pXPwgJRy" +
"z6kSP4nPt1xj1lPKj5zwPXKWxMkPO9ocqhKdg2mOh6/rc1ObIoMDAQgHiGEEGBMI" +
"AAkFAlG+BsACGwwACgkQ98A5VoxaPVN8cgEAj4dMNMNwRSg2ZBWunqUAHqIedVbS" +
"dmwmbysD192L3z4A/ReXEa0gtv8OFWjuALD1ovEK8TpDORLUb6IuUb5jUIzY");
private static readonly byte[] testPrivKey =
Base64.Decode(
"lKUEUb4GwBMIKoZIzj0DAQcCAwS8p3TFaRAx58qCG63W+UNthXBPSJDnVDPTb/sT" +
"iXePaAZ/Gh1GKXTq7k6ab/67MMeVFp/EdySumqdWLtvceFKs/gcDAo11YYCae/K2" +
"1uKGJ/uU4b4QHYnPIsAdYpuo5HIdoAOL/WwduRa8C6vSFrtMJLDqPK3BUpMz3CXN" +
"GyMhjuaHKP5MPbBZkIfgUGZO5qvU9+i0UFRlc3QgRUNEU0EtRUNESCAoS2V5IGFu" +
"ZCBzdWJrZXkgYXJlIDI1NiBiaXRzIGxvbmcpIDx0ZXN0LmVjZHNhLmVjZGhAZXhh" +
"bXBsZS5jb20+iHoEExMIACIFAlG+BsACGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4B" +
"AheAAAoJEPfAOVaMWj1Tk7YBAOLz007oltog5sLreMwxayIBpAesEI+QNkuJuA2/" +
"vcMuAP99qi4fhhkmz5w41AE9Wc/VtobU2lZHmmk3clQsVyuFyg==");
private static readonly byte[] testMessage =
Base64.Decode(
"hH4Dp5+FdoujIBwSAgMErx4BSvgXY3irwthgxU8zPoAoR+8rhmxdpwbw6ZJAO2GX" +
"azWJ85JNcobHKDeGeUq6wkTFu+g6yG99gIX8J5xJAjBRhyCRcaFgwbdDV4orWTe3" +
"iewiT8qs4BQ23e0c8t+thdKoK4thMsCJy7wSKqY0sJTSVAELroNbCOi2lcO15YmW" +
"6HiuFH7VKWcxPUBjXwf5+Z3uOKEp28tBgNyDrdbr1BbqlgYzIKq/pe9zUbUXfitn" +
"vFc6HcGhvmRQreQ+Yw1x3x0HJeoPwg==");
private void Generate()
{
SecureRandom random = SecureRandom.GetInstance("SHA1PRNG");
//
// Generate a master key
//
IAsymmetricCipherKeyPairGenerator keyGen = GeneratorUtilities.GetKeyPairGenerator("ECDSA");
keyGen.Init(new ECKeyGenerationParameters(SecObjectIdentifiers.SecP256r1, random));
AsymmetricCipherKeyPair kpSign = keyGen.GenerateKeyPair();
PgpKeyPair ecdsaKeyPair = new PgpKeyPair(PublicKeyAlgorithmTag.ECDsa, kpSign, DateTime.UtcNow);
//
// Generate an encryption key
//
keyGen = GeneratorUtilities.GetKeyPairGenerator("ECDH");
keyGen.Init(new ECKeyGenerationParameters(SecObjectIdentifiers.SecP256r1, random));
AsymmetricCipherKeyPair kpEnc = keyGen.GenerateKeyPair();
PgpKeyPair ecdhKeyPair = new PgpKeyPair(PublicKeyAlgorithmTag.ECDH, kpEnc, DateTime.UtcNow);
//
// Generate a key ring
//
char[] passPhrase = "test".ToCharArray();
PgpKeyRingGenerator keyRingGen = new PgpKeyRingGenerator(PgpSignature.PositiveCertification, ecdsaKeyPair,
"test@bouncycastle.org", SymmetricKeyAlgorithmTag.Aes256, passPhrase, true, null, null, random);
keyRingGen.AddSubKey(ecdhKeyPair);
PgpPublicKeyRing pubRing = keyRingGen.GeneratePublicKeyRing();
// TODO: add check of KdfParameters
DoBasicKeyRingCheck(pubRing);
PgpSecretKeyRing secRing = keyRingGen.GenerateSecretKeyRing();
PgpPublicKeyRing pubRingEnc = new PgpPublicKeyRing(pubRing.GetEncoded());
if (!Arrays.AreEqual(pubRing.GetEncoded(), pubRingEnc.GetEncoded()))
{
Fail("public key ring encoding failed");
}
PgpSecretKeyRing secRingEnc = new PgpSecretKeyRing(secRing.GetEncoded());
if (!Arrays.AreEqual(secRing.GetEncoded(), secRingEnc.GetEncoded()))
{
Fail("secret key ring encoding failed");
}
PgpPrivateKey pgpPrivKey = secRing.GetSecretKey().ExtractPrivateKey(passPhrase);
}
private void TestDecrypt(PgpSecretKeyRing secretKeyRing)
{
PgpObjectFactory pgpF = new PgpObjectFactory(testMessage);
PgpEncryptedDataList encList = (PgpEncryptedDataList)pgpF.NextPgpObject();
PgpPublicKeyEncryptedData encP = (PgpPublicKeyEncryptedData)encList[0];
PgpSecretKey secretKey = secretKeyRing.GetSecretKey(); // secretKeyRing.GetSecretKey(encP.KeyId);
// PgpPrivateKey pgpPrivKey = secretKey.extractPrivateKey(new JcePBESecretKeyEncryptorBuilder());
// clear = encP.getDataStream(pgpPrivKey, "BC");
//
// bOut.reset();
//
// while ((ch = clear.read()) >= 0)
// {
// bOut.write(ch);
// }
//
// out = bOut.toByteArray();
//
// if (!AreEqual(out, text))
// {
// fail("wrong plain text in Generated packet");
// }
}
private void EncryptDecryptTest()
{
SecureRandom random = SecureRandom.GetInstance("SHA1PRNG");
byte[] text = Encoding.ASCII.GetBytes("hello world!");
IAsymmetricCipherKeyPairGenerator keyGen = GeneratorUtilities.GetKeyPairGenerator("ECDH");
keyGen.Init(new ECKeyGenerationParameters(SecObjectIdentifiers.SecP256r1, random));
AsymmetricCipherKeyPair kpEnc = keyGen.GenerateKeyPair();
PgpKeyPair ecdhKeyPair = new PgpKeyPair(PublicKeyAlgorithmTag.ECDH, kpEnc, DateTime.UtcNow);
PgpLiteralDataGenerator lData = new PgpLiteralDataGenerator();
MemoryStream ldOut = new MemoryStream();
Stream pOut = lData.Open(ldOut, PgpLiteralDataGenerator.Utf8, PgpLiteralData.Console, text.Length, DateTime.UtcNow);
pOut.Write(text, 0, text.Length);
pOut.Close();
byte[] data = ldOut.ToArray();
MemoryStream cbOut = new MemoryStream();
PgpEncryptedDataGenerator cPk = new PgpEncryptedDataGenerator(SymmetricKeyAlgorithmTag.Cast5, random);
cPk.AddMethod(ecdhKeyPair.PublicKey);
Stream cOut = cPk.Open(new UncloseableStream(cbOut), data.Length);
cOut.Write(data, 0, data.Length);
cOut.Close();
PgpObjectFactory pgpF = new PgpObjectFactory(cbOut.ToArray());
PgpEncryptedDataList encList = (PgpEncryptedDataList)pgpF.NextPgpObject();
PgpPublicKeyEncryptedData encP = (PgpPublicKeyEncryptedData)encList[0];
Stream clear = encP.GetDataStream(ecdhKeyPair.PrivateKey);
pgpF = new PgpObjectFactory(clear);
PgpLiteralData ld = (PgpLiteralData)pgpF.NextPgpObject();
clear = ld.GetInputStream();
MemoryStream bOut = new MemoryStream();
int ch;
while ((ch = clear.ReadByte()) >= 0)
{
bOut.WriteByte((byte)ch);
}
byte[] output = bOut.ToArray();
if (!AreEqual(output, text))
{
Fail("wrong plain text in Generated packet");
}
}
public override void PerformTest()
{
//
// Read the public key
//
PgpPublicKeyRing pubKeyRing = new PgpPublicKeyRing(testPubKey);
DoBasicKeyRingCheck(pubKeyRing);
//
// Read the private key
//
PgpSecretKeyRing secretKeyRing = new PgpSecretKeyRing(testPrivKey);
TestDecrypt(secretKeyRing);
EncryptDecryptTest();
Generate();
}
private void DoBasicKeyRingCheck(PgpPublicKeyRing pubKeyRing)
{
foreach (PgpPublicKey pubKey in pubKeyRing.GetPublicKeys())
{
if (pubKey.IsMasterKey)
{
if (pubKey.IsEncryptionKey)
{
Fail("master key showed as encryption key!");
}
}
else
{
if (!pubKey.IsEncryptionKey)
{
Fail("sub key not encryption key!");
}
foreach (PgpSignature certification in pubKeyRing.GetPublicKey().GetSignatures())
{
certification.InitVerify(pubKeyRing.GetPublicKey());
if (!certification.VerifyCertification((string)First(pubKeyRing.GetPublicKey().GetUserIds()), pubKeyRing.GetPublicKey()))
{
Fail("subkey certification does not verify");
}
}
}
}
}
private static T First<T>(IEnumerable<T> e)
{
var n = e.GetEnumerator();
Assert.IsTrue(n.MoveNext());
return n.Current;
}
public override string Name
{
get { return "PgpECDHTest"; }
}
[Test]
public void TestFunction()
{
string resultText = Perform().ToString();
Assert.AreEqual(Name + ": Okay", resultText);
}
}
}
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