protected bool Equals(
ElGamalPrivateKeyParameters other)
{
return other.x.Equals(x) && base.Equals(other);
}
/// <summary>
/// Extract a <c>PgpPrivateKey</c> from this secret key's encrypted contents.
/// </summary>
/// <param name="passPhrase"></param>
/// <returns></returns>
/// <exception cref="PgpException">
/// unknown public key algorithm encountered
/// or
/// Exception constructing key
/// </exception>
public IPgpPrivateKey ExtractPrivateKey(char[] passPhrase)
{
var secKeyData = _secret.GetSecretKeyData();
if (secKeyData == null || secKeyData.Length < 1)
return null;
var pubPk = _secret.PublicKeyPacket;
try
{
var data = ExtractKeyData(passPhrase);
using (var memory = new MemoryStream(data, false))
{
using (var bcpgIn = BcpgInputStream.Wrap(memory))
{
IAsymmetricKeyParameter privateKey;
switch (pubPk.Algorithm)
{
case PublicKeyAlgorithmTag.RsaEncrypt:
case PublicKeyAlgorithmTag.RsaGeneral:
case PublicKeyAlgorithmTag.RsaSign:
var rsaPub = (RsaPublicBcpgKey)pubPk.Key;
var rsaPriv = new RsaSecretBcpgKey(bcpgIn);
var rsaPrivSpec = new RsaPrivateCrtKeyParameters(
rsaPriv.Modulus,
rsaPub.PublicExponent,
rsaPriv.PrivateExponent,
rsaPriv.PrimeP,
rsaPriv.PrimeQ,
rsaPriv.PrimeExponentP,
rsaPriv.PrimeExponentQ,
rsaPriv.CrtCoefficient);
privateKey = rsaPrivSpec;
break;
case PublicKeyAlgorithmTag.Dsa:
var dsaPub = (DsaPublicBcpgKey)pubPk.Key;
var dsaPriv = new DsaSecretBcpgKey(bcpgIn);
var dsaParams = new DsaParameters(dsaPub.P, dsaPub.Q, dsaPub.G);
privateKey = new DsaPrivateKeyParameters(dsaPriv.X, dsaParams);
break;
case PublicKeyAlgorithmTag.ElGamalEncrypt:
case PublicKeyAlgorithmTag.ElGamalGeneral:
var elPub = (ElGamalPublicBcpgKey)pubPk.Key;
var elPriv = new ElGamalSecretBcpgKey(bcpgIn);
var elParams = new ElGamalParameters(elPub.P, elPub.G);
privateKey = new ElGamalPrivateKeyParameters(elPriv.X, elParams);
break;
case PublicKeyAlgorithmTag.Ecdh:
var ecdhPub = (ECDHPublicBcpgKey)pubPk.Key;
var ecdhPriv = new ECSecretBcpgKey(bcpgIn);
privateKey = new ECDHPrivateKeyParameters(ecdhPriv.X,
new ECDHPublicKeyParameters(ecdhPub.Point, ecdhPub.Oid, ecdhPub.HashAlgorithm, ecdhPub.SymmetricKeyAlgorithm),
PgpPublicKey.BuildFingerprint(pubPk));
break;
case PublicKeyAlgorithmTag.Ecdsa:
var ecdsaPub = (ECPublicBcpgKey)pubPk.Key;
var ecdsaPriv = new ECSecretBcpgKey(bcpgIn);
privateKey = new ECPrivateKeyParameters(pubPk.Algorithm.ToString(), ecdsaPriv.X, ecdsaPub.Oid);
break;
default:
throw new PgpException("unknown public key algorithm encountered");
}
return new PgpPrivateKey(privateKey, KeyId);
}
}
}
catch (PgpException)
{
throw;
}
catch (Exception e)
{
throw new PgpException("Exception constructing key", e);
}
}
public void TestElGamal()
{
BigInteger ELGamalParaG = new BigInteger(Base64.Decode("QAZPRcsH8kHVKS5065R1Xy6QtsPvDkmDZtPuq18EJkvLrCIZivE/m5puQp3/VKJrG7dKgz4NBGpONp3HT+Cn/g=="));
BigInteger ELGamalParaP = new BigInteger(Base64.Decode("AKXmAwgkudDLI/Yxk6wk3APn+mSjX5QSyDwpchmegSIi1ZNC0Jb+IbxjroKNhRTBKjtv4/JTXtJS6IqaZv9uKes="));
BigInteger ELGamalPubY = new BigInteger(Base64.Decode("AJ/gXuZuCA2X044otNkzs8FI36XuFu1L/YHg5cEmDvICTigycRN2E1DnhP+CTqxEqgEqX8rBe5tuGDlkTLwgNqM="));
BigInteger ELGamalPriv = new BigInteger(Base64.Decode("CqVr+K0TpuJKQnc76MjKhxrJzGr93jnuE3mTpth486Meymt8uWEVAQj1tGc9DTt14F9aV9WIT2oYYbvLJRcwow=="));
ElGamalParameters elPara = new ElGamalParameters(ELGamalParaP, ELGamalParaG);
ElGamalPrivateKeyParameters elPriv = new ElGamalPrivateKeyParameters(ELGamalPriv, elPara);
ElGamalPublicKeyParameters elPub = new ElGamalPublicKeyParameters(ELGamalPubY, elPara);
SubjectPublicKeyInfo subInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(elPub);
PrivateKeyInfo privInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(elPriv);
ElGamalPrivateKeyParameters telPriv = (ElGamalPrivateKeyParameters)PrivateKeyFactory.CreateKey(privInfo);
ElGamalPublicKeyParameters telPub = (ElGamalPublicKeyParameters)PublicKeyFactory.CreateKey(subInfo);
// Console.WriteLine(telPriv.Equals(elPriv));
Assert.IsTrue(telPriv.Equals(elPriv), "ELGamal Private key to into back to private key.");
Assert.IsTrue(telPub.Equals(elPub), "ELGamal Public key to into back to private key.");
Assert.IsTrue(true, "ELGamal Test worked.");
}
public void TestElGamal()
{
BigInteger g512 = new BigInteger("153d5d6172adb43045b68ae8e1de1070b6137005686d29d3d73a7749199681ee5b212c9b96bfdcfa5b20cd5e3fd2044895d609cf9b410b7a0f12ca1cb9a428cc", 16);
BigInteger p512 = new BigInteger("9494fec095f3b85ee286542b3836fc81a5dd0a0349b4c239dd38744d488cf8e31db8bcb7d33b41abb9e5a33cca9144b1cef332c94bf0573bf047a3aca98cdf3b", 16);
ElGamalParameters dhParams = new ElGamalParameters(p512, g512);
ElGamalKeyGenerationParameters parameters = new ElGamalKeyGenerationParameters(new SecureRandom(), dhParams); ElGamalKeyPairGenerator kpGen = new ElGamalKeyPairGenerator();
kpGen.Init(parameters);
AsymmetricCipherKeyPair pair = kpGen.GenerateKeyPair();
ElGamalPublicKeyParameters pu1 = (ElGamalPublicKeyParameters)pair.Public;
ElGamalPrivateKeyParameters pv1 = (ElGamalPrivateKeyParameters)pair.Private;
ElGamalPublicKeyParameters pu2 = new ElGamalPublicKeyParameters(pu1.Y, pu1.Parameters);
ElGamalPrivateKeyParameters pv2 = new ElGamalPrivateKeyParameters(pv1.X, pv1.Parameters);
ElGamalPublicKeyParameters pu3 = new ElGamalPublicKeyParameters(pv1.X, pu1.Parameters);
ElGamalPrivateKeyParameters pv3 = new ElGamalPrivateKeyParameters(pu1.Y, pu1.Parameters);
doTest(pu1, pu2, pu3);
doTest(pv1, pv2, pv3);
ElGamalParameters pr1 = pu1.Parameters;
ElGamalParameters pr2 = new ElGamalParameters(pr1.P, pr1.G);
ElGamalParameters pr3 = new ElGamalParameters(pr1.G, pr1.P);
doTest(pr1, pr2, pr3);
pu2 = new ElGamalPublicKeyParameters(pu1.Y, pr2);
pv2 = new ElGamalPrivateKeyParameters(pv1.X, pr2);
doTest(pu1, pu2, pu3);
doTest(pv1, pv2, pv3);
ElGamalTestKeyParameters k1 = new ElGamalTestKeyParameters(false, null);
ElGamalTestKeyParameters k2 = new ElGamalTestKeyParameters(false, null);
ElGamalTestKeyParameters k3 = new ElGamalTestKeyParameters(false, pu1.Parameters);
doTest(k1, k2, k3);
}
internal PgpPrivateKey DoExtractPrivateKey(byte[] rawPassPhrase, bool clearPassPhrase)
{
if (IsPrivateKeyEmpty)
return null;
PublicKeyPacket pubPk = secret.PublicKeyPacket;
try
{
byte[] data = ExtractKeyData(rawPassPhrase, clearPassPhrase);
BcpgInputStream bcpgIn = BcpgInputStream.Wrap(new MemoryStream(data, false));
AsymmetricKeyParameter privateKey;
switch (pubPk.Algorithm)
{
case PublicKeyAlgorithmTag.RsaEncrypt:
case PublicKeyAlgorithmTag.RsaGeneral:
case PublicKeyAlgorithmTag.RsaSign:
RsaPublicBcpgKey rsaPub = (RsaPublicBcpgKey)pubPk.Key;
RsaSecretBcpgKey rsaPriv = new RsaSecretBcpgKey(bcpgIn);
RsaPrivateCrtKeyParameters rsaPrivSpec = new RsaPrivateCrtKeyParameters(
rsaPriv.Modulus,
rsaPub.PublicExponent,
rsaPriv.PrivateExponent,
rsaPriv.PrimeP,
rsaPriv.PrimeQ,
rsaPriv.PrimeExponentP,
rsaPriv.PrimeExponentQ,
rsaPriv.CrtCoefficient);
privateKey = rsaPrivSpec;
break;
case PublicKeyAlgorithmTag.Dsa:
DsaPublicBcpgKey dsaPub = (DsaPublicBcpgKey)pubPk.Key;
DsaSecretBcpgKey dsaPriv = new DsaSecretBcpgKey(bcpgIn);
DsaParameters dsaParams = new DsaParameters(dsaPub.P, dsaPub.Q, dsaPub.G);
privateKey = new DsaPrivateKeyParameters(dsaPriv.X, dsaParams);
break;
case PublicKeyAlgorithmTag.ECDH:
privateKey = GetECKey("ECDH", bcpgIn);
break;
case PublicKeyAlgorithmTag.ECDsa:
privateKey = GetECKey("ECDSA", bcpgIn);
break;
case PublicKeyAlgorithmTag.ElGamalEncrypt:
case PublicKeyAlgorithmTag.ElGamalGeneral:
ElGamalPublicBcpgKey elPub = (ElGamalPublicBcpgKey)pubPk.Key;
ElGamalSecretBcpgKey elPriv = new ElGamalSecretBcpgKey(bcpgIn);
ElGamalParameters elParams = new ElGamalParameters(elPub.P, elPub.G);
privateKey = new ElGamalPrivateKeyParameters(elPriv.X, elParams);
break;
default:
throw new PgpException("unknown public key algorithm encountered");
}
return new PgpPrivateKey(KeyId, pubPk, privateKey);
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("Exception constructing key", e);
}
}
/// <summary>Extract a <c>PgpPrivateKey</c> from this secret key's encrypted contents.</summary>
public PgpPrivateKey ExtractPrivateKey(
char[] passPhrase)
{
byte[] secKeyData = secret.GetSecretKeyData();
if (secKeyData == null || secKeyData.Length < 1)
return null;
PublicKeyPacket pubPk = secret.PublicKeyPacket;
try
{
byte[] data = ExtractKeyData(passPhrase);
BcpgInputStream bcpgIn = BcpgInputStream.Wrap(new MemoryStream(data, false));
AsymmetricKeyParameter privateKey;
switch (pubPk.Algorithm)
{
case PublicKeyAlgorithmTag.RsaEncrypt:
case PublicKeyAlgorithmTag.RsaGeneral:
case PublicKeyAlgorithmTag.RsaSign:
RsaPublicBcpgKey rsaPub = (RsaPublicBcpgKey)pubPk.Key;
RsaSecretBcpgKey rsaPriv = new RsaSecretBcpgKey(bcpgIn);
RsaPrivateCrtKeyParameters rsaPrivSpec = new RsaPrivateCrtKeyParameters(
rsaPriv.Modulus,
rsaPub.PublicExponent,
rsaPriv.PrivateExponent,
rsaPriv.PrimeP,
rsaPriv.PrimeQ,
rsaPriv.PrimeExponentP,
rsaPriv.PrimeExponentQ,
rsaPriv.CrtCoefficient);
privateKey = rsaPrivSpec;
break;
case PublicKeyAlgorithmTag.Dsa:
DsaPublicBcpgKey dsaPub = (DsaPublicBcpgKey)pubPk.Key;
DsaSecretBcpgKey dsaPriv = new DsaSecretBcpgKey(bcpgIn);
DsaParameters dsaParams = new DsaParameters(dsaPub.P, dsaPub.Q, dsaPub.G);
privateKey = new DsaPrivateKeyParameters(dsaPriv.X, dsaParams);
break;
case PublicKeyAlgorithmTag.ElGamalEncrypt:
case PublicKeyAlgorithmTag.ElGamalGeneral:
ElGamalPublicBcpgKey elPub = (ElGamalPublicBcpgKey)pubPk.Key;
ElGamalSecretBcpgKey elPriv = new ElGamalSecretBcpgKey(bcpgIn);
ElGamalParameters elParams = new ElGamalParameters(elPub.P, elPub.G);
privateKey = new ElGamalPrivateKeyParameters(elPriv.X, elParams);
break;
default:
throw new PgpException("unknown public key algorithm encountered");
}
return new PgpPrivateKey(privateKey, KeyId);
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("Exception constructing key", e);
}
}
public void TestInvalidP()
{
ElGamalParameters dhParams = new ElGamalParameters(pPgpBogusPSamp, gPgpBogusPSamp, lPgpBogusPSamp);
ElGamalPublicKeyParameters pu = new ElGamalPublicKeyParameters(yPgpBogusPSamp, dhParams);
ElGamalPrivateKeyParameters pv = new ElGamalPrivateKeyParameters(xPgpBogusPSamp, dhParams);
ElGamalEngine e = new ElGamalEngine();
e.Init(true, pu);
byte[] message = Hex.Decode("5468697320697320612074657374");
byte[] pText = message;
byte[] cText = e.ProcessBlock(pText, 0, pText.Length);
e.Init(false, pv);
pText = e.ProcessBlock(cText, 0, cText.Length);
if (Arrays.AreEqual(message, pText))
{
Fail("invalid test failed");
}
}
private void checkKeySize(
int privateValueSize,
ElGamalPrivateKeyParameters priv)
{
if (privateValueSize != 0)
{
if (priv.X.BitLength != privateValueSize)
{
Fail("limited key check failed for key size " + privateValueSize);
}
}
}
protected bool Equals(
ElGamalPrivateKeyParameters other)
{
return(other.x.Equals(x) && base.Equals(other));
}
protected bool Equals(ElGamalPrivateKeyParameters other) => (other.x.Equals(this.x) && base.Equals((ElGamalKeyParameters)other));
