public void TestECDsa191bitBinary()
{
BigInteger r = new BigInteger("87194383164871543355722284926904419997237591535066528048");
BigInteger s = new BigInteger("308992691965804947361541664549085895292153777025772063598");
byte[] kData = BigIntegers.AsUnsignedByteArray(new BigInteger("1542725565216523985789236956265265265235675811949404040041"));
SecureRandom k = FixedSecureRandom.From(kData);
F2mCurve curve = new F2mCurve(
191, // m
9, //k
new BigInteger("2866537B676752636A68F56554E12640276B649EF7526267", 16), // a
new BigInteger("2E45EF571F00786F67B0081B9495A3D95462F5DE0AA185EC", 16)); // b
ECDomainParameters parameters = new ECDomainParameters(
curve,
curve.DecodePoint(Hex.Decode("0436B3DAF8A23206F9C4F299D7B21A9C369137F2C84AE1AA0D765BE73433B3F95E332932E70EA245CA2418EA0EF98018FB")), // G
new BigInteger("1569275433846670190958947355803350458831205595451630533029"), // n
BigInteger.Two); // h
ECPrivateKeyParameters priKey = new ECPrivateKeyParameters(
"ECDSA",
new BigInteger("1275552191113212300012030439187146164646146646466749494799"), // d
parameters);
ECDsaSigner ecdsa = new ECDsaSigner();
ParametersWithRandom param = new ParametersWithRandom(priKey, k);
ecdsa.Init(true, param);
byte[] message = new BigInteger("968236873715988614170569073515315707566766479517").ToByteArray();
BigInteger[] sig = ecdsa.GenerateSignature(message);
if (!r.Equals(sig[0]))
{
Fail("r component wrong." + SimpleTest.NewLine
+ " expecting: " + r + SimpleTest.NewLine
+ " got : " + sig[0]);
}
if (!s.Equals(sig[1]))
{
Fail("s component wrong." + SimpleTest.NewLine
+ " expecting: " + s + SimpleTest.NewLine
+ " got : " + sig[1]);
}
// Verify the signature
ECPublicKeyParameters pubKey = new ECPublicKeyParameters(
"ECDSA",
curve.DecodePoint(Hex.Decode("045DE37E756BD55D72E3768CB396FFEB962614DEA4CE28A2E755C0E0E02F5FB132CAF416EF85B229BBB8E1352003125BA1")), // Q
parameters);
ecdsa.Init(false, pubKey);
if (!ecdsa.VerifySignature(message, sig[0], sig[1]))
{
Fail("signature fails");
}
}
public virtual void Init(bool forSigning, ICipherParameters parameters)
{
SecureRandom providedRandom = null;
if (forSigning)
{
if (parameters is ParametersWithRandom)
{
ParametersWithRandom rParam = (ParametersWithRandom)parameters;
providedRandom = rParam.Random;
parameters = rParam.Parameters;
}
if (!(parameters is DsaPrivateKeyParameters))
{
throw new InvalidKeyException("DSA private key required for signing");
}
this.key = (DsaPrivateKeyParameters)parameters;
}
else
{
if (!(parameters is DsaPublicKeyParameters))
{
throw new InvalidKeyException("DSA public key required for verification");
}
this.key = (DsaPublicKeyParameters)parameters;
}
this.random = InitSecureRandom(forSigning && !kCalculator.IsDeterministic, providedRandom);
}
public virtual void Init(
bool forSigning,
ICipherParameters parameters)
{
if (forSigning)
{
if (parameters is ParametersWithRandom)
{
ParametersWithRandom rParam = (ParametersWithRandom)parameters;
this.random = rParam.Random;
parameters = rParam.Parameters;
}
else
{
this.random = new SecureRandom();
}
if (!(parameters is ECPrivateKeyParameters))
{
throw new InvalidKeyException("EC private key required for signing");
}
this.key = (ECPrivateKeyParameters)parameters;
}
else
{
if (!(parameters is ECPublicKeyParameters))
{
throw new InvalidKeyException("EC public key required for verification");
}
this.key = (ECPublicKeyParameters)parameters;
}
}
/**
* initialise the ElGamal engine.
*
* @param forEncryption true if we are encrypting, false otherwise.
* @param param the necessary ElGamal key parameters.
*/
public void Init(
bool forEncryption,
ICipherParameters parameters)
{
if (parameters is ParametersWithRandom)
{
ParametersWithRandom p = (ParametersWithRandom)parameters;
this.key = (ElGamalKeyParameters)p.Parameters;
this.random = p.Random;
}
else
{
this.key = (ElGamalKeyParameters)parameters;
this.random = new SecureRandom();
}
this.forEncryption = forEncryption;
this.bitSize = key.Parameters.P.BitLength;
if (forEncryption)
{
if (!(key is ElGamalPublicKeyParameters))
{
throw new ArgumentException("ElGamalPublicKeyParameters are required for encryption.");
}
}
else
{
if (!(key is ElGamalPrivateKeyParameters))
{
throw new ArgumentException("ElGamalPrivateKeyParameters are required for decryption.");
}
}
}
/// <summary>Initialise the generator for signing.</summary>
public void InitSign(
int sigType,
PgpPrivateKey key,
SecureRandom random)
{
this.privKey = key;
this.signatureType = sigType;
try
{
ICipherParameters cp = key.Key;
if (random != null)
{
cp = new ParametersWithRandom(key.Key, random);
}
sig.Init(true, cp);
}
catch (InvalidKeyException e)
{
throw new PgpException("invalid key.", e);
}
dig.Reset();
lastb = 0;
}
public void Init(
ICipherParameters parameters)
{
AsymmetricKeyParameter kParam;
if (parameters is ParametersWithRandom)
{
ParametersWithRandom rParam = (ParametersWithRandom)parameters;
this.random = rParam.Random;
kParam = (AsymmetricKeyParameter)rParam.Parameters;
}
else
{
this.random = new SecureRandom();
kParam = (AsymmetricKeyParameter)parameters;
}
if (!(kParam is DHPrivateKeyParameters))
{
throw new ArgumentException("DHEngine expects DHPrivateKeyParameters");
}
this.key = (DHPrivateKeyParameters)kParam;
this.dhParams = key.Parameters;
}
public void Init(bool forEncryption, ICipherParameters parameters)
{
AsymmetricKeyParameter kParam;
if (parameters is ParametersWithRandom)
{
ParametersWithRandom rParam = (ParametersWithRandom)parameters;
this.random = rParam.Random;
kParam = (AsymmetricKeyParameter)rParam.Parameters;
}
else
{
this.random = new SecureRandom();
kParam = (AsymmetricKeyParameter)parameters;
}
engine.Init(forEncryption, parameters);
this.forPrivateKey = kParam.IsPrivate;
this.forEncryption = forEncryption;
this.blockBuffer = new byte[engine.GetOutputBlockSize()];
if (pLen > 0 && fallback == null && random == null)
{
throw new ArgumentException("encoder requires random");
}
}
public void Init(
bool forSigning,
ICipherParameters parameters)
{
if (forSigning)
{
if (parameters is ParametersWithRandom)
{
ParametersWithRandom rParam = (ParametersWithRandom)parameters;
this.random = rParam.Random;
parameters = rParam.Parameters;
}
else
{
this.random = new SecureRandom();
}
if (!(parameters is Gost3410PrivateKeyParameters))
{
throw new InvalidKeyException("GOST3410 private key required for signing");
}
this.key = (Gost3410PrivateKeyParameters)parameters;
}
else
{
if (!(parameters is Gost3410PublicKeyParameters))
{
throw new InvalidKeyException("GOST3410 public key required for signing");
}
this.key = (Gost3410PublicKeyParameters)parameters;
}
}
/**
* initialise the RSA engine.
*
* @param forEncryption true if we are encrypting, false otherwise.
* @param param the necessary RSA key parameters.
*/
public virtual void Init(
bool forEncryption,
ICipherParameters param)
{
core.Init(forEncryption, param);
if (param is ParametersWithRandom)
{
ParametersWithRandom rParam = (ParametersWithRandom)param;
this.key = (RsaKeyParameters)rParam.Parameters;
if (key is RsaPrivateCrtKeyParameters)
{
this.random = rParam.Random;
}
else
{
this.random = null;
}
}
else
{
this.key = (RsaKeyParameters)param;
if (key is RsaPrivateCrtKeyParameters)
{
this.random = new SecureRandom();
}
else
{
this.random = null;
}
}
}
private static IAsymmetricBlockCipher createCipher(bool forEncryption, IAsymmetricKey key, IParameters <Algorithm> parameters, SecureRandom random)
{
IAsymmetricBlockCipher engine = FipsRsa.ENGINE_PROVIDER.CreateEngine(EngineUsage.GENERAL);
ICipherParameters lwParams;
if (key is AsymmetricRsaPublicKey)
{
AsymmetricRsaPublicKey k = (AsymmetricRsaPublicKey)key;
lwParams = FipsRsa.GetPublicKeyParameters(k, AsymmetricRsaKey.Usage.EncryptOrDecrypt);
}
else
{
AsymmetricRsaPrivateKey k = (AsymmetricRsaPrivateKey)key;
lwParams = FipsRsa.GetPrivateKeyParameters(k, AsymmetricRsaKey.Usage.EncryptOrDecrypt);
}
if (parameters.Algorithm.Equals(WrapPkcs1v15.Algorithm))
{
engine = new Pkcs1Encoding(engine);
}
if (random != null)
{
lwParams = new ParametersWithRandom(lwParams, random);
}
engine.Init(forEncryption, lwParams);
return(engine);
}
public static byte[] SignTransaction(byte[] data, byte[] privateKey)
{
ECDsaSigner signer = new ECDsaSigner();
X9ECParameters spec = SecNamedCurves.GetByName("secp256k1");
ECDomainParameters domain = new ECDomainParameters(spec.Curve, spec.G, spec.N);
ECPrivateKeyParameters privateKeyParms =
new ECPrivateKeyParameters(new BigInteger(1, privateKey), domain);
ParametersWithRandom paramxs = new ParametersWithRandom(privateKeyParms);
signer.Init(true, paramxs);
var signature = signer.GenerateSignature(data); //sign and get R and S
//return as DER format
using (MemoryStream outStream = new MemoryStream(80))
{
DerSequenceGenerator seq = new DerSequenceGenerator(outStream);
seq.AddObject(new DerInteger(signature[0])); //r
seq.AddObject(new DerInteger(signature[1])); //s
seq.AddObject(new DerInteger(GetRecoveryId(signature[0].ToByteArray(),
signature[1].ToByteArray(), data, GetPublicKey(privateKey)))); //v
seq.Close();
return(outStream.ToArray());
}
}
public virtual void Init(bool forEncryption, ICipherParameters param)
{
this.mForEncryption = forEncryption;
if (forEncryption)
{
ParametersWithRandom rParam = (ParametersWithRandom)param;
mECKey = (ECKeyParameters)rParam.Parameters;
mECParams = mECKey.Parameters;
ECPoint s = ((ECPublicKeyParameters)mECKey).Q.Multiply(mECParams.H);
if (s.IsInfinity)
{
throw new ArgumentException("invalid key: [h]Q at infinity");
}
mRandom = rParam.Random;
}
else
{
mECKey = (ECKeyParameters)param;
mECParams = mECKey.Parameters;
}
mCurveLength = (mECParams.Curve.FieldSize + 7) / 8;
}
/// <summary>
/// Creates ECDSA from imported data
/// </summary>
/// <param name="type">0 or 1 (1 faster)</param>
/// <param name="forSign">if created for signing, otherwise for verifying</param>
/// <param name="import">Imporeted public or private key</param>
public ECDSAWrapper(int type, bool forSign, byte[] import)
{
this.initCurveandParams(type);
if (forSign)
{
try
{
//import - D (BigInteger)
SecureRandom random = new SecureRandom();
BigInteger Drec = new BigInteger(import);
ECPrivateKeyParameters ecPrivImported = new ECPrivateKeyParameters(Drec, this.parameters);
ParametersWithRandom ecPrivImportedpwr = new ParametersWithRandom(ecPrivImported, random);
this.ecdsa.Init(true, ecPrivImportedpwr);
}
catch (Exception ex)
{
throw new Exception("Error while creating ECDSAWrapper from import for signing", ex);
}
}
else
{
try
{
//import - Q (ECPoint)
ECPoint Qrec = this.ecCurve.DecodePoint(import);
ECPublicKeyParameters recPub = new ECPublicKeyParameters(Qrec, this.parameters);
this.ecdsa.Init(false, recPub);
}
catch (Exception ex)
{
throw new Exception("Error while creating ECDSAWrapperfom import for verifying", ex);
}
}
}
public void TestECDsa239bitBinary()
{
BigInteger r = new BigInteger("21596333210419611985018340039034612628818151486841789642455876922391552");
BigInteger s = new BigInteger("197030374000731686738334997654997227052849804072198819102649413465737174");
byte[] kData = BigIntegers.AsUnsignedByteArray(new BigInteger("171278725565216523967285789236956265265265235675811949404040041670216363"));
SecureRandom k = FixedSecureRandom.From(kData);
F2mCurve curve = new F2mCurve(
239, // m
36, //k
new BigInteger("32010857077C5431123A46B808906756F543423E8D27877578125778AC76", 16), // a
new BigInteger("790408F2EEDAF392B012EDEFB3392F30F4327C0CA3F31FC383C422AA8C16", 16)); // b
ECDomainParameters parameters = new ECDomainParameters(
curve,
curve.DecodePoint(Hex.Decode("0457927098FA932E7C0A96D3FD5B706EF7E5F5C156E16B7E7C86038552E91D61D8EE5077C33FECF6F1A16B268DE469C3C7744EA9A971649FC7A9616305")), // G
new BigInteger("220855883097298041197912187592864814557886993776713230936715041207411783"), // n
BigInteger.ValueOf(4)); // h
ECPrivateKeyParameters priKey = new ECPrivateKeyParameters(
"ECDSA",
new BigInteger("145642755521911534651321230007534120304391871461646461466464667494947990"), // d
parameters);
ECDsaSigner ecdsa = new ECDsaSigner();
ParametersWithRandom param = new ParametersWithRandom(priKey, k);
ecdsa.Init(true, param);
byte[] message = new BigInteger("968236873715988614170569073515315707566766479517").ToByteArray();
BigInteger[] sig = ecdsa.GenerateSignature(message);
if (!r.Equals(sig[0]))
{
Fail("r component wrong." + SimpleTest.NewLine
+ " expecting: " + r + SimpleTest.NewLine
+ " got : " + sig[0]);
}
if (!s.Equals(sig[1]))
{
Fail("s component wrong." + SimpleTest.NewLine
+ " expecting: " + s + SimpleTest.NewLine
+ " got : " + sig[1]);
}
// Verify the signature
ECPublicKeyParameters pubKey = new ECPublicKeyParameters(
"ECDSA",
curve.DecodePoint(Hex.Decode("045894609CCECF9A92533F630DE713A958E96C97CCB8F5ABB5A688A238DEED6DC2D9D0C94EBFB7D526BA6A61764175B99CB6011E2047F9F067293F57F5")), // Q
parameters);
ecdsa.Init(false, pubKey);
if (!ecdsa.VerifySignature(message, sig[0], sig[1]))
{
Fail("signature fails");
}
}
public virtual void init(bool forSigning, CipherParameters param)
{
RSAKeyParameters kParam = null;
if (param is ParametersWithRandom)
{
ParametersWithRandom p = (ParametersWithRandom)param;
kParam = (RSAKeyParameters)p.getParameters();
random = p.getRandom();
}
else
{
kParam = (RSAKeyParameters)param;
if (forSigning)
{
random = new SecureRandom();
}
}
cipher.init(forSigning, kParam);
emBits = kParam.getModulus().bitLength() - 1;
block = new byte[(emBits + 7) / 8];
reset();
}
public void TestECDsa192bitPrime()
{
BigInteger r = new BigInteger("3342403536405981729393488334694600415596881826869351677613");
BigInteger s = new BigInteger("5735822328888155254683894997897571951568553642892029982342");
byte[] kData = BigIntegers.AsUnsignedByteArray(new BigInteger("6140507067065001063065065565667405560006161556565665656654"));
SecureRandom k = FixedSecureRandom.From(kData);
FpCurve curve = new FpCurve(
new BigInteger("6277101735386680763835789423207666416083908700390324961279"), // q
new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), // a
new BigInteger("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", 16)); // b
ECDomainParameters parameters = new ECDomainParameters(
curve,
curve.DecodePoint(Hex.Decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012")), // G
new BigInteger("6277101735386680763835789423176059013767194773182842284081")); // n
ECPrivateKeyParameters priKey = new ECPrivateKeyParameters(
"ECDSA",
new BigInteger("651056770906015076056810763456358567190100156695615665659"), // d
parameters);
ParametersWithRandom param = new ParametersWithRandom(priKey, k);
ECDsaSigner ecdsa = new ECDsaSigner();
ecdsa.Init(true, param);
byte[] message = new BigInteger("968236873715988614170569073515315707566766479517").ToByteArray();
BigInteger[] sig = ecdsa.GenerateSignature(message);
if (!r.Equals(sig[0]))
{
Fail("r component wrong." + SimpleTest.NewLine
+ " expecting: " + r + SimpleTest.NewLine
+ " got : " + sig[0]);
}
if (!s.Equals(sig[1]))
{
Fail("s component wrong." + SimpleTest.NewLine
+ " expecting: " + s + SimpleTest.NewLine
+ " got : " + sig[1]);
}
// Verify the signature
ECPublicKeyParameters pubKey = new ECPublicKeyParameters(
"ECDSA",
curve.DecodePoint(Hex.Decode("0262b12d60690cdcf330babab6e69763b471f994dd702d16a5")), // Q
parameters);
ecdsa.Init(false, pubKey);
if (!ecdsa.VerifySignature(message, sig[0], sig[1]))
{
Fail("verification fails");
}
}
/// <summary>
/// Encrypts a plain array of bytes using a public key
/// </summary>
/// <param name="publicKey">the public key used for encryption</param>
/// <param name="plainBytes">the plain bytes to encrypt</param>
/// <returns></returns>
public byte[] EncryptBytes(byte[] publicKey, byte[] plainBytes)
{
var pubKey = (ECPublicKeyParameters)CreateAsymmetricKeyParameterFromPublicKeyInfo(publicKey);
var pubKeyWithRandom = new ParametersWithRandom(pubKey, new SecureRandom());
cipher.Init(true, pubKeyWithRandom);
return(cipher.ProcessBlock(plainBytes, 0, plainBytes.Length));
}
public static ICipherParameters WithRandom(ICipherParameters cp, SecureRandom random)
{
if (random != null)
{
cp = new ParametersWithRandom(cp, random);
}
return(cp);
}
public void TestECDsa239bitPrime()
{
BigInteger r = new BigInteger("308636143175167811492622547300668018854959378758531778147462058306432176");
BigInteger s = new BigInteger("323813553209797357708078776831250505931891051755007842781978505179448783");
byte[] kData = BigIntegers.AsUnsignedByteArray(new BigInteger("700000017569056646655505781757157107570501575775705779575555657156756655"));
SecureRandom k = FixedSecureRandom.From(kData);
FpCurve curve = new FpCurve(
new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b
ECDomainParameters parameters = new ECDomainParameters(
curve,
curve.DecodePoint(Hex.Decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n
ECPrivateKeyParameters priKey = new ECPrivateKeyParameters(
"ECDSA",
new BigInteger("876300101507107567501066130761671078357010671067781776716671676178726717"), // d
parameters);
ECDsaSigner ecdsa = new ECDsaSigner();
ParametersWithRandom param = new ParametersWithRandom(priKey, k);
ecdsa.Init(true, param);
byte[] message = new BigInteger("968236873715988614170569073515315707566766479517").ToByteArray();
BigInteger[] sig = ecdsa.GenerateSignature(message);
if (!r.Equals(sig[0]))
{
Fail("r component wrong." + SimpleTest.NewLine
+ " expecting: " + r + SimpleTest.NewLine
+ " got : " + sig[0]);
}
if (!s.Equals(sig[1]))
{
Fail("s component wrong." + SimpleTest.NewLine
+ " expecting: " + s + SimpleTest.NewLine
+ " got : " + sig[1]);
}
// Verify the signature
ECPublicKeyParameters pubKey = new ECPublicKeyParameters(
"ECDSA",
curve.DecodePoint(Hex.Decode("025b6dc53bc61a2548ffb0f671472de6c9521a9d2d2534e65abfcbd5fe0c70")), // Q
parameters);
ecdsa.Init(false, pubKey);
if (!ecdsa.VerifySignature(message, sig[0], sig[1]))
{
Fail("signature fails");
}
}
public IStreamCalculator CreateCalculator()
{
var param = new ParametersWithRandom(privateKey, new SecureRandom());
var gst = new Gost3410DigestSigner(new ECGost3410Signer(), new Gost3411_2012_256Digest());
gst.Init(true, param);
return(new DefaultSignatureCalculator(gst));
}
public virtual void Init(bool forSigning, ICipherParameters parameters)
{
ICipherParameters baseParam;
byte[] userID;
if (parameters is ParametersWithID)
{
baseParam = ((ParametersWithID)parameters).Parameters;
userID = ((ParametersWithID)parameters).GetID();
if (userID.Length >= 8192)
{
throw new ArgumentException("SM2 user ID must be less than 2^16 bits long");
}
}
else
{
baseParam = parameters;
// the default value, string value is "1234567812345678"
userID = Hex.Decode("31323334353637383132333435363738");
}
if (forSigning)
{
if (baseParam is ParametersWithRandom)
{
ParametersWithRandom rParam = (ParametersWithRandom)baseParam;
ecKey = (ECKeyParameters)rParam.Parameters;
ecParams = ecKey.Parameters;
kCalculator.Init(ecParams.N, rParam.Random);
}
else
{
ecKey = (ECKeyParameters)baseParam;
ecParams = ecKey.Parameters;
kCalculator.Init(ecParams.N, new SecureRandom());
}
pubPoint = CreateBasePointMultiplier().Multiply(ecParams.G, ((ECPrivateKeyParameters)ecKey).D).Normalize();
}
else
{
ecKey = (ECKeyParameters)baseParam;
ecParams = ecKey.Parameters;
pubPoint = ((ECPublicKeyParameters)ecKey).Q;
}
digest.Reset();
z = GetZ(userID);
digest.BlockUpdate(z, 0, z.Length);
}
public override void Init(bool forEncryption, ICipherParameters parameters)
{
this.forEncryption = forEncryption;
ParametersWithRandom parametersWithRandom = parameters as ParametersWithRandom;
if (parametersWithRandom != null)
{
parameters = parametersWithRandom.Parameters;
}
Reset();
cipher.Init(forEncryption, parameters);
}
public IStreamCalculator CreateCalculator()
{
ISigner sig = SignerUtilities.GetSigner(algorithm);
ICipherParameters cp = privateKey;
if (random != null)
{
cp = new ParametersWithRandom(cp, random);
}
sig.Init(true, cp);
return(new SigCalculator(sig));
}
/**
* sm2加密
*
*/
public static byte[] Encrypt(byte[] pubkey, byte[] srcData)
{
X9ECParameters sm2p256v1 = GMNamedCurves.GetByName("sm2p256v1");
SecureRandom random = new SecureRandom();
ECDomainParameters parameters = new ECDomainParameters(sm2p256v1.Curve, sm2p256v1.G, sm2p256v1.N);
ECPublicKeyParameters pubKeyParameters = new ECPublicKeyParameters(sm2p256v1.Curve.DecodePoint(pubkey), parameters);
SM2Engine engine = new SM2Engine();
ParametersWithRandom pwr = new ParametersWithRandom(pubKeyParameters, new SecureRandom());
engine.Init(true, pwr);
return(encodeSM2CipherToDER(engine.ProcessBlock(srcData, 0, srcData.Length)));
}
/**
* Test Sign and Verify with test parameters
* see: http://www.ietf.org/internet-drafts/draft-popov-cryptopro-cpalgs-01.txt
* gostR3410-2001-TestParamSet P.46
*/
private void ecGOST3410_TestParam()
{
SecureRandom random = new SecureRandom();
BigInteger mod_p = new BigInteger("57896044618658097711785492504343953926634992332820282019728792003956564821041"); //p
BigInteger mod_q = new BigInteger("57896044618658097711785492504343953927082934583725450622380973592137631069619");
FpCurve curve = new FpCurve(
mod_p, // p
new BigInteger("7"), // a
new BigInteger("43308876546767276905765904595650931995942111794451039583252968842033849580414"), // b
mod_q, BigInteger.One);
ECDomainParameters parameters = new ECDomainParameters(
curve,
curve.CreatePoint(
new BigInteger("2"), // x
new BigInteger("4018974056539037503335449422937059775635739389905545080690979365213431566280")), // y
mod_q);
ECKeyPairGenerator pGen = new ECKeyPairGenerator();
ECKeyGenerationParameters genParam = new ECKeyGenerationParameters(
parameters,
random);
pGen.Init(genParam);
AsymmetricCipherKeyPair pair = pGen.GenerateKeyPair();
ParametersWithRandom param = new ParametersWithRandom(pair.Private, random);
ECGost3410Signer ecgost3410 = new ECGost3410Signer();
ecgost3410.Init(true, param);
//get hash message using the digest GOST3411.
byte[] message = Encoding.ASCII.GetBytes("Message for sign");
Gost3411Digest gost3411 = new Gost3411Digest();
gost3411.BlockUpdate(message, 0, message.Length);
byte[] hashmessage = new byte[gost3411.GetDigestSize()];
gost3411.DoFinal(hashmessage, 0);
BigInteger[] sig = ecgost3410.GenerateSignature(hashmessage);
ecgost3410.Init(false, pair.Public);
if (!ecgost3410.VerifySignature(hashmessage, sig[0], sig[1]))
{
Fail("signature fails");
}
}
public virtual void Init(bool forEncryption, ICipherParameters param)
{
this.core.Init(forEncryption, param);
if (param is ParametersWithRandom)
{
ParametersWithRandom parametersWithRandom = (ParametersWithRandom)param;
this.key = (RsaKeyParameters)parametersWithRandom.Parameters;
this.random = parametersWithRandom.Random;
return;
}
this.key = (RsaKeyParameters)param;
this.random = new SecureRandom();
}
/**
* Method init
*
* @param forWrapping
* @param param
*/
public virtual void Init(
bool forWrapping,
ICipherParameters parameters)
{
this.forWrapping = forWrapping;
this.engine = new CbcBlockCipher(new DesEdeEngine());
SecureRandom sr;
if (parameters is ParametersWithRandom)
{
ParametersWithRandom pr = (ParametersWithRandom)parameters;
parameters = pr.Parameters;
sr = pr.Random;
}
else
{
sr = new SecureRandom();
}
if (parameters is KeyParameter)
{
this.param = (KeyParameter)parameters;
if (this.forWrapping)
{
// Hm, we have no IV but we want to wrap ?!?
// well, then we have to create our own IV.
this.iv = new byte[8];
sr.NextBytes(iv);
this.paramPlusIV = new ParametersWithIV(this.param, this.iv);
}
}
else if (parameters is ParametersWithIV)
{
if (!forWrapping)
{
throw new ArgumentException("You should not supply an IV for unwrapping");
}
this.paramPlusIV = (ParametersWithIV)parameters;
this.iv = this.paramPlusIV.GetIV();
this.param = (KeyParameter)this.paramPlusIV.Parameters;
if (this.iv.Length != 8)
{
throw new ArgumentException("IV is not 8 octets", "parameters");
}
}
}
public void Init(bool forEncryption, ICipherParameters param)
{
if (param is ParametersWithRandom)
{
ParametersWithRandom parametersWithRandom = (ParametersWithRandom)param;
random = parametersWithRandom.Random;
}
else
{
random = new SecureRandom();
}
engine.Init(forEncryption, param);
this.forEncryption = forEncryption;
}
/**
* sm2解密
*/
public static byte[] Decrypt(byte[] privkey, byte[] srcData)
{
X9ECParameters sm2p256v1 = GMNamedCurves.GetByName("sm2p256v1");
SecureRandom random = new SecureRandom();
ECDomainParameters parameters = new ECDomainParameters(sm2p256v1.Curve, sm2p256v1.G, sm2p256v1.N);
ECPrivateKeyParameters priKeyParameters = new ECPrivateKeyParameters(new BigInteger(1, privkey), parameters);
SM2Engine engine = new SM2Engine();
ParametersWithRandom pwr = new ParametersWithRandom(priKeyParameters, new SecureRandom());
engine.Init(false, priKeyParameters);
byte[] c1c2c3 = decodeDERSM2Cipher(srcData);
return(engine.ProcessBlock(c1c2c3, 0, c1c2c3.Length));
}
public virtual void Init(bool forSigning, ICipherParameters parameters)
{
//IL_0041: Unknown result type (might be due to invalid IL or missing references)
//IL_007b: Unknown result type (might be due to invalid IL or missing references)
RsaKeyParameters rsaKeyParameters;
if (parameters is ParametersWithRandom)
{
ParametersWithRandom parametersWithRandom = (ParametersWithRandom)parameters;
rsaKeyParameters = (RsaKeyParameters)parametersWithRandom.Parameters;
if (forSigning)
{
random = parametersWithRandom.Random;
}
}
else if (parameters is ParametersWithSalt)
{
if (!forSigning)
{
throw new ArgumentException("ParametersWithSalt only valid for signing", "parameters");
}
ParametersWithSalt parametersWithSalt = (ParametersWithSalt)parameters;
rsaKeyParameters = (RsaKeyParameters)parametersWithSalt.Parameters;
standardSalt = parametersWithSalt.GetSalt();
if (standardSalt.Length != saltLength)
{
throw new ArgumentException("Fixed salt is of wrong length");
}
}
else
{
rsaKeyParameters = (RsaKeyParameters)parameters;
if (forSigning)
{
random = new SecureRandom();
}
}
cipher.Init(forSigning, rsaKeyParameters);
keyBits = rsaKeyParameters.Modulus.BitLength;
block = new byte[(keyBits + 7) / 8];
if (trailer == 188)
{
mBuf = new byte[block.Length - digest.GetDigestSize() - saltLength - 1 - 1];
}
else
{
mBuf = new byte[block.Length - digest.GetDigestSize() - saltLength - 1 - 2];
}
Reset();
}
