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|
using System;
using System.Text;
using NUnit.Framework;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.TeleTrust;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Asn1.X9;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Digests;
using Org.BouncyCastle.Crypto.Generators;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto.Signers;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Math.EC;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.Encoders;
using Org.BouncyCastle.Utilities.Test;
namespace Org.BouncyCastle.Tests
{
[TestFixture]
public class DsaTest
: SimpleTest
{
private static readonly byte[] k1 = Hex.Decode("d5014e4b60ef2ba8b6211b4062ba3224e0427dd3");
private static readonly byte[] k2 = Hex.Decode("345e8d05c075c3a508df729a1685690e68fcfb8c8117847e89063bca1f85d968fd281540b6e13bd1af989a1fbf17e06462bf511f9d0b140fb48ac1b1baa5bded");
private static readonly SecureRandom random = FixedSecureRandom.From(k1, k2);
// TODO How shall we satisfy this compatibility test?
// [Test]
// public void TestCompat()
// {
// if (Security.getProvider("SUN") == null)
// return;
// ISigner s = SignerUtilities.GetSigner("DSA", "SUN");
// KeyPairGenerator g = KeyPairGenerator.GetInstance("DSA", "SUN");
// byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
//
// g.initialize(512, new SecureRandom());
//
// KeyPair p = g.generateKeyPair();
//
// PrivateKey sKey = p.Private;
// PublicKey vKey = p.Public;
//
// //
// // sign SUN - verify with BC
// //
// s.Init(true, sKey);
//
// s.update(data);
//
// byte[] sigBytes = s.GenerateSignature();
//
// s = SignerUtilities.GetSigner("DSA");
//
// s.Init(false, vKey);
//
// s.update(data);
//
// if (!s.VerifySignature(sigBytes))
// {
// Fail("SUN -> BC verification failed");
// }
//
// //
// // sign BC - verify with SUN
// //
//
// s.Init(true, sKey);
//
// s.update(data);
//
// sigBytes = s.GenerateSignature();
//
// s = SignerUtilities.GetSigner("DSA", "SUN");
//
// s.Init(false, vKey);
//
// s.update(data);
//
// if (!s.VerifySignature(sigBytes))
// {
// Fail("BC -> SUN verification failed");
// }
//
// //
// // key encoding test - BC decoding Sun keys
// //
// KeyFactory f = KeyFactory.GetInstance("DSA");
// X509EncodedKeySpec x509s = new X509EncodedKeySpec(vKey.GetEncoded());
// DSAPublicKey k1 = (DSAPublicKey)f.generatePublic(x509s);
//
// if (!k1.Y.Equals(((DSAPublicKey)vKey).Y))
// {
// Fail("public number not decoded properly");
// }
//
// if (!k1.Parameters.G.Equals(((DSAPublicKey)vKey).Parameters.G))
// {
// Fail("public generator not decoded properly");
// }
//
// if (!k1.Parameters.P.Equals(((DSAPublicKey)vKey).Parameters.P))
// {
// Fail("public p value not decoded properly");
// }
//
// if (!k1.Parameters.Q.Equals(((DSAPublicKey)vKey).Parameters.Q))
// {
// Fail("public q value not decoded properly");
// }
//
// PKCS8EncodedKeySpec pkcs8 = new PKCS8EncodedKeySpec(sKey.GetEncoded());
// DSAPrivateKey k2 = (DSAPrivateKey)f.generatePrivate(pkcs8);
//
// if (!k2.X.Equals(((DSAPrivateKey)sKey).X))
// {
// Fail("private number not decoded properly");
// }
//
// if (!k2.Parameters.G.Equals(((DSAPrivateKey)sKey).Parameters.G))
// {
// Fail("private generator not decoded properly");
// }
//
// if (!k2.Parameters.P.Equals(((DSAPrivateKey)sKey).Parameters.P))
// {
// Fail("private p value not decoded properly");
// }
//
// if (!k2.Parameters.Q.Equals(((DSAPrivateKey)sKey).Parameters.Q))
// {
// Fail("private q value not decoded properly");
// }
//
// //
// // key decoding test - SUN decoding BC keys
// //
// f = KeyFactory.GetInstance("DSA", "SUN");
// x509s = new X509EncodedKeySpec(k1.GetEncoded());
//
// vKey = (DSAPublicKey)f.generatePublic(x509s);
//
// if (!k1.Y.Equals(((DSAPublicKey)vKey).Y))
// {
// Fail("public number not decoded properly");
// }
//
// if (!k1.Parameters.G.Equals(((DSAPublicKey)vKey).Parameters.G))
// {
// Fail("public generator not decoded properly");
// }
//
// if (!k1.Parameters.P.Equals(((DSAPublicKey)vKey).Parameters.P))
// {
// Fail("public p value not decoded properly");
// }
//
// if (!k1.Parameters.Q.Equals(((DSAPublicKey)vKey).Parameters.Q))
// {
// Fail("public q value not decoded properly");
// }
//
// pkcs8 = new PKCS8EncodedKeySpec(k2.GetEncoded());
// sKey = (DSAPrivateKey)f.generatePrivate(pkcs8);
//
// if (!k2.X.Equals(((DSAPrivateKey)sKey).X))
// {
// Fail("private number not decoded properly");
// }
//
// if (!k2.Parameters.G.Equals(((DSAPrivateKey)sKey).Parameters.G))
// {
// Fail("private generator not decoded properly");
// }
//
// if (!k2.Parameters.P.Equals(((DSAPrivateKey)sKey).Parameters.P))
// {
// Fail("private p value not decoded properly");
// }
//
// if (!k2.Parameters.Q.Equals(((DSAPrivateKey)sKey).Parameters.Q))
// {
// Fail("private q value not decoded properly");
// }
// }
[Test]
public void TestNONEwithDSA()
{
byte[] dummySha1 = Hex.Decode("01020304050607080910111213141516");
SecureRandom rand = new SecureRandom();
DsaParametersGenerator pGen = new DsaParametersGenerator();
pGen.Init(512, 80, rand);
IAsymmetricCipherKeyPairGenerator g = GeneratorUtilities.GetKeyPairGenerator("DSA");
g.Init(new DsaKeyGenerationParameters(rand, pGen.GenerateParameters()));
AsymmetricCipherKeyPair kp = g.GenerateKeyPair();
ISigner sig = SignerUtilities.GetSigner("NONEwithDSA");
sig.Init(true, kp.Private);
sig.BlockUpdate(dummySha1, 0, dummySha1.Length);
byte[] sigBytes = sig.GenerateSignature();
sig.Init(false, kp.Public);
sig.BlockUpdate(dummySha1, 0, dummySha1.Length);
sig.VerifySignature(sigBytes);
// reset test
sig.BlockUpdate(dummySha1, 0, dummySha1.Length);
if (!sig.VerifySignature(sigBytes))
{
Fail("NONEwithDSA failed to reset");
}
// lightweight test
DsaSigner signer = new DsaSigner();
Asn1Sequence derSig = Asn1Sequence.GetInstance(Asn1Object.FromByteArray(sigBytes));
signer.Init(false, kp.Public);
if (!signer.VerifySignature(dummySha1,
DerInteger.GetInstance(derSig[0]).Value, DerInteger.GetInstance(derSig[1]).Value))
{
Fail("NONEwithDSA not really NONE!");
}
}
/**
* X9.62 - 1998,<br/>
* J.3.2, Page 155, ECDSA over the field Fp<br/>
* an example with 239 bit prime
*/
[Test]
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);
X9ECParameters x9 = ECNamedCurveTable.GetByName("prime239v1");
ECCurve curve = x9.Curve;
ECDomainParameters spec = new ECDomainParameters(curve, x9.G, x9.N, x9.H);
ECPrivateKeyParameters priKey = new ECPrivateKeyParameters(
"ECDSA",
new BigInteger("876300101507107567501066130761671078357010671067781776716671676178726717"), // d
spec);
ECPublicKeyParameters pubKey = new ECPublicKeyParameters(
"ECDSA",
curve.DecodePoint(Hex.Decode("025b6dc53bc61a2548ffb0f671472de6c9521a9d2d2534e65abfcbd5fe0c70")), // Q
spec);
ISigner sgr = SignerUtilities.GetSigner("ECDSA");
// KeyFactory f = KeyFactory.GetInstance("ECDSA");
// PrivateKey sKey = f.generatePrivate(priKey);
// PublicKey vKey = f.generatePublic(pubKey);
AsymmetricKeyParameter sKey = priKey;
AsymmetricKeyParameter vKey = pubKey;
sgr.Init(true, new ParametersWithRandom(sKey, k));
byte[] message = Encoding.ASCII.GetBytes("abc");
sgr.BlockUpdate(message, 0, message.Length);
byte[] sigBytes = sgr.GenerateSignature();
sgr.Init(false, vKey);
sgr.BlockUpdate(message, 0, message.Length);
if (!sgr.VerifySignature(sigBytes))
{
Fail("239 Bit EC verification failed");
}
BigInteger[] sig = DerDecode(sigBytes);
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]);
}
}
/**
* X9.62 - 1998,<br/>
* J.2.1, Page 100, ECDSA over the field F2m<br/>
* an example with 191 bit binary field
*/
[Test]
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);
X9ECParameters x9 = ECNamedCurveTable.GetByName("c2tnb239v1");
ECCurve curve = x9.Curve;
ECDomainParameters parameters = new ECDomainParameters(curve, x9.G, x9.N, x9.H);
ECPrivateKeyParameters sKey = new ECPrivateKeyParameters(
"ECDSA",
new BigInteger("145642755521911534651321230007534120304391871461646461466464667494947990"), // d
parameters);
ECPublicKeyParameters vKey = new ECPublicKeyParameters(
"ECDSA",
curve.DecodePoint(Hex.Decode("045894609CCECF9A92533F630DE713A958E96C97CCB8F5ABB5A688A238DEED6DC2D9D0C94EBFB7D526BA6A61764175B99CB6011E2047F9F067293F57F5")), // Q
parameters);
ISigner sgr = SignerUtilities.GetSigner("ECDSA");
byte[] message = Encoding.ASCII.GetBytes("abc");
sgr.Init(true, new ParametersWithRandom(sKey, k));
sgr.BlockUpdate(message, 0, message.Length);
byte[] sigBytes = sgr.GenerateSignature();
sgr.Init(false, vKey);
sgr.BlockUpdate(message, 0, message.Length);
if (!sgr.VerifySignature(sigBytes))
{
Fail("239 Bit EC verification failed");
}
BigInteger[] sig = DerDecode(sigBytes);
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]);
}
}
[Test]
public void TestECDsa239BitBinaryRipeMD160()
{
DoTestECDsa239BitBinary("RIPEMD160withECDSA", TeleTrusTObjectIdentifiers.ECSignWithRipeMD160);
}
[Test]
public void TestECDsa239BitBinarySha1()
{
DoTestECDsa239BitBinary("SHA1withECDSA", TeleTrusTObjectIdentifiers.ECSignWithSha1);
}
[Test]
public void TestECDsa239BitBinarySha224()
{
DoTestECDsa239BitBinary("SHA224withECDSA", X9ObjectIdentifiers.ECDsaWithSha224);
}
[Test]
public void TestECDsa239BitBinarySha256()
{
DoTestECDsa239BitBinary("SHA256withECDSA", X9ObjectIdentifiers.ECDsaWithSha256);
}
[Test]
public void TestECDsa239BitBinarySha384()
{
DoTestECDsa239BitBinary("SHA384withECDSA", X9ObjectIdentifiers.ECDsaWithSha384);
}
[Test]
public void TestECDsa239BitBinarySha512()
{
DoTestECDsa239BitBinary("SHA512withECDSA", X9ObjectIdentifiers.ECDsaWithSha512);
}
private void DoTestECDsa239BitBinary(
string algorithm,
DerObjectIdentifier oid)
{
BigInteger r = new BigInteger("21596333210419611985018340039034612628818151486841789642455876922391552");
BigInteger s = new BigInteger("197030374000731686738334997654997227052849804072198819102649413465737174");
byte[] kData = BigIntegers.AsUnsignedByteArray(
new BigInteger("171278725565216523967285789236956265265265235675811949404040041670216363"));
SecureRandom k = FixedSecureRandom.From(kData);
X9ECParameters x9 = ECNamedCurveTable.GetByName("c2tnb239v1");
ECCurve curve = x9.Curve;
ECDomainParameters parameters = new ECDomainParameters(curve, x9.G, x9.N, x9.H);
ECPrivateKeyParameters sKey = new ECPrivateKeyParameters(
new BigInteger("145642755521911534651321230007534120304391871461646461466464667494947990"), // d
parameters);
ECPublicKeyParameters vKey = new ECPublicKeyParameters(
curve.DecodePoint(Hex.Decode("045894609CCECF9A92533F630DE713A958E96C97CCB8F5ABB5A688A238DEED6DC2D9D0C94EBFB7D526BA6A61764175B99CB6011E2047F9F067293F57F5")), // Q
parameters);
ISigner sgr = SignerUtilities.GetSigner(algorithm);
byte[] message = Encoding.ASCII.GetBytes("abc");
sgr.Init(true, new ParametersWithRandom(sKey, k));
sgr.BlockUpdate(message, 0, message.Length);
byte[] sigBytes = sgr.GenerateSignature();
sgr = SignerUtilities.GetSigner(oid.Id);
sgr.Init(false, vKey);
sgr.BlockUpdate(message, 0, message.Length);
if (!sgr.VerifySignature(sigBytes))
{
Fail("239 Bit EC RIPEMD160 verification failed");
}
}
private void doTestBadStrength(
int strength)
{
// IAsymmetricCipherKeyPairGenerator g = GeneratorUtilities.GetKeyPairGenerator("DSA");
// test exception
//
try
{
SecureRandom rand = new SecureRandom();
DsaParametersGenerator pGen = new DsaParametersGenerator();
pGen.Init(strength, 80, rand);
// g.Init(new DsaKeyGenerationParameters(rand, pGen.GenerateParameters()));
Fail("illegal parameter " + strength + " check failed.");
}
catch (ArgumentException)
{
// expected
}
}
[Test]
public void TestGeneration()
{
ISigner s = SignerUtilities.GetSigner("DSA");
byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
SecureRandom rand = new SecureRandom();
// KeyPairGenerator g = KeyPairGenerator.GetInstance("DSA");
IAsymmetricCipherKeyPairGenerator g = GeneratorUtilities.GetKeyPairGenerator("DSA");
// test exception
//
doTestBadStrength(513);
doTestBadStrength(510);
doTestBadStrength(1025);
//g.initialize(512, rand);
{
DsaParametersGenerator pGen = new DsaParametersGenerator();
pGen.Init(512, 80, rand);
g.Init(new DsaKeyGenerationParameters(rand, pGen.GenerateParameters()));
}
AsymmetricCipherKeyPair p = g.GenerateKeyPair();
AsymmetricKeyParameter sKey = p.Private;
AsymmetricKeyParameter vKey = p.Public;
s.Init(true, sKey);
s.BlockUpdate(data, 0, data.Length);
byte[] sigBytes = s.GenerateSignature();
s = SignerUtilities.GetSigner("DSA");
s.Init(false, vKey);
s.BlockUpdate(data, 0, data.Length);
if (!s.VerifySignature(sigBytes))
{
Fail("DSA verification failed");
}
//
// ECDSA Fp generation test
//
s = SignerUtilities.GetSigner("ECDSA");
X9ECParameters x9 = ECNamedCurveTable.GetByName("prime239v1");
ECCurve curve = x9.Curve;
ECDomainParameters ecSpec = new ECDomainParameters(curve, x9.G, x9.N, x9.H);
g = GeneratorUtilities.GetKeyPairGenerator("ECDSA");
g.Init(new ECKeyGenerationParameters(ecSpec, rand));
p = g.GenerateKeyPair();
sKey = p.Private;
vKey = p.Public;
s.Init(true, sKey);
s.BlockUpdate(data, 0, data.Length);
sigBytes = s.GenerateSignature();
s = SignerUtilities.GetSigner("ECDSA");
s.Init(false, vKey);
s.BlockUpdate(data, 0, data.Length);
if (!s.VerifySignature(sigBytes))
{
Fail("ECDSA verification failed");
}
//
// ECDSA F2m generation test
//
s = SignerUtilities.GetSigner("ECDSA");
x9 = ECNamedCurveTable.GetByName("c2tnb239v1");
curve = x9.Curve;
ecSpec = new ECDomainParameters(curve, x9.G, x9.N, x9.H);
g = GeneratorUtilities.GetKeyPairGenerator("ECDSA");
g.Init(new ECKeyGenerationParameters(ecSpec, rand));
p = g.GenerateKeyPair();
sKey = p.Private;
vKey = p.Public;
s.Init(true, sKey);
s.BlockUpdate(data, 0, data.Length);
sigBytes = s.GenerateSignature();
s = SignerUtilities.GetSigner("ECDSA");
s.Init(false, vKey);
s.BlockUpdate(data, 0, data.Length);
if (!s.VerifySignature(sigBytes))
{
Fail("ECDSA verification failed");
}
}
[Test]
public void TestParameters()
{
// AlgorithmParameterGenerator a = AlgorithmParameterGenerator.GetInstance("DSA");
// a.init(512, random);
DsaParametersGenerator a = new DsaParametersGenerator();
a.Init(512, 20, random);
// AlgorithmParameters parameters = a.generateParameters();
DsaParameters p = a.GenerateParameters();
// byte[] encodeParams = parameters.GetEncoded();
byte[] encodeParams = new DsaParameter(p.P, p.Q, p.G).GetDerEncoded();
// AlgorithmParameters a2 = AlgorithmParameters.GetInstance("DSA");
// a2.init(encodeParams);
DsaParameter dsaP = DsaParameter.GetInstance(Asn1Object.FromByteArray(encodeParams));
DsaParameters p2 = new DsaParameters(dsaP.P, dsaP.Q, dsaP.G);
// a and a2 should be equivalent!
// byte[] encodeParams_2 = a2.GetEncoded();
byte[] encodeParams_2 = new DsaParameter(p2.P, p2.Q, p2.G).GetDerEncoded();
if (!AreEqual(encodeParams, encodeParams_2))
{
Fail("encode/Decode parameters failed");
}
// DSAParameterSpec dsaP = (DSAParameterSpec)parameters.getParameterSpec(typeof(DSAParameterSpec));
// KeyPairGenerator g = KeyPairGenerator.GetInstance("DSA");
IAsymmetricCipherKeyPairGenerator g = GeneratorUtilities.GetKeyPairGenerator("DSA");
// g.initialize(dsaP, new SecureRandom());
g.Init(new DsaKeyGenerationParameters(new SecureRandom(), p));
// KeyPair p = g.generateKeyPair();
AsymmetricCipherKeyPair pair = g.GenerateKeyPair();
// PrivateKey sKey = p.Private;
// PublicKey vKey = p.Public;
AsymmetricKeyParameter sKey = pair.Private;
AsymmetricKeyParameter vKey = pair.Public;
ISigner s = SignerUtilities.GetSigner("DSA");
byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
s.Init(true, sKey);
s.BlockUpdate(data, 0, data.Length);
byte[] sigBytes = s.GenerateSignature();
s = SignerUtilities.GetSigner("DSA");
s.Init(false, vKey);
s.BlockUpdate(data, 0, data.Length);
if (!s.VerifySignature(sigBytes))
{
Fail("DSA verification failed");
}
}
[Test]
public void TestDsa2Parameters()
{
byte[] seed = Hex.Decode("4783081972865EA95D43318AB2EAF9C61A2FC7BBF1B772A09017BDF5A58F4FF0");
//AlgorithmParameterGenerator a = AlgorithmParameterGenerator.getInstance("DSA", "BC");
//a.init(2048, new DSATestSecureRandom(seed));
DsaParametersGenerator a = new DsaParametersGenerator(new Sha256Digest());
a.Init(new DsaParameterGenerationParameters(2048, 256, 80, new DsaTestSecureRandom(seed)));
//AlgorithmParameters parameters = a.generateParameters();
//DSAParameterSpec dsaP = (DSAParameterSpec)parameters.getParameterSpec(DSAParameterSpec.class);
DsaParameters dsaP = a.GenerateParameters();
if (!dsaP.Q.Equals(new BigInteger("C24ED361870B61E0D367F008F99F8A1F75525889C89DB1B673C45AF5867CB467", 16)))
{
Fail("Q incorrect");
}
if (!dsaP.P.Equals(new BigInteger(
"F56C2A7D366E3EBDEAA1891FD2A0D099" +
"436438A673FED4D75F594959CFFEBCA7BE0FC72E4FE67D91" +
"D801CBA0693AC4ED9E411B41D19E2FD1699C4390AD27D94C" +
"69C0B143F1DC88932CFE2310C886412047BD9B1C7A67F8A2" +
"5909132627F51A0C866877E672E555342BDF9355347DBD43" +
"B47156B2C20BAD9D2B071BC2FDCF9757F75C168C5D9FC431" +
"31BE162A0756D1BDEC2CA0EB0E3B018A8B38D3EF2487782A" +
"EB9FBF99D8B30499C55E4F61E5C7DCEE2A2BB55BD7F75FCD" +
"F00E48F2E8356BDB59D86114028F67B8E07B127744778AFF" +
"1CF1399A4D679D92FDE7D941C5C85C5D7BFF91BA69F9489D" +
"531D1EBFA727CFDA651390F8021719FA9F7216CEB177BD75", 16)))
{
Fail("P incorrect");
}
if (!dsaP.G.Equals(new BigInteger(
"8DC6CC814CAE4A1C05A3E186A6FE27EA" +
"BA8CDB133FDCE14A963A92E809790CBA096EAA26140550C1" +
"29FA2B98C16E84236AA33BF919CD6F587E048C52666576DB" +
"6E925C6CBE9B9EC5C16020F9A44C9F1C8F7A8E611C1F6EC2" +
"513EA6AA0B8D0F72FED73CA37DF240DB57BBB27431D61869" +
"7B9E771B0B301D5DF05955425061A30DC6D33BB6D2A32BD0" +
"A75A0A71D2184F506372ABF84A56AEEEA8EB693BF29A6403" +
"45FA1298A16E85421B2208D00068A5A42915F82CF0B858C8" +
"FA39D43D704B6927E0B2F916304E86FB6A1B487F07D8139E" +
"428BB096C6D67A76EC0B8D4EF274B8A2CF556D279AD267CC" +
"EF5AF477AFED029F485B5597739F5D0240F67C2D948A6279", 16)))
{
Fail("G incorrect");
}
//KeyPairGenerator g = KeyPairGenerator.getInstance("DSA", "BC");
IAsymmetricCipherKeyPairGenerator g = GeneratorUtilities.GetKeyPairGenerator("DSA");
//g.initialize(dsaP, FixedSecureRandom.From(Hex.Decode("0CAF2EF547EC49C4F3A6FE6DF4223A174D01F2C115D49A6F73437C29A2A8458C")));
g.Init(new DsaKeyGenerationParameters(FixedSecureRandom.From(Hex.Decode("0CAF2EF547EC49C4F3A6FE6DF4223A174D01F2C115D49A6F73437C29A2A8458C")), dsaP));
//KeyPair p = g.generateKeyPair();
AsymmetricCipherKeyPair p = g.GenerateKeyPair();
//DSAPrivateKey sKey = (DSAPrivateKey)p.getPrivate();
//DSAPublicKey vKey = (DSAPublicKey)p.getPublic();
DsaPrivateKeyParameters sKey = (DsaPrivateKeyParameters)p.Private;
DsaPublicKeyParameters vKey = (DsaPublicKeyParameters)p.Public;
if (!vKey.Y.Equals(new BigInteger(
"2828003D7C747199143C370FDD07A286" +
"1524514ACC57F63F80C38C2087C6B795B62DE1C224BF8D1D" +
"1424E60CE3F5AE3F76C754A2464AF292286D873A7A30B7EA" +
"CBBC75AAFDE7191D9157598CDB0B60E0C5AA3F6EBE425500" +
"C611957DBF5ED35490714A42811FDCDEB19AF2AB30BEADFF" +
"2907931CEE7F3B55532CFFAEB371F84F01347630EB227A41" +
"9B1F3F558BC8A509D64A765D8987D493B007C4412C297CAF" +
"41566E26FAEE475137EC781A0DC088A26C8804A98C23140E" +
"7C936281864B99571EE95C416AA38CEEBB41FDBFF1EB1D1D" +
"C97B63CE1355257627C8B0FD840DDB20ED35BE92F08C49AE" +
"A5613957D7E5C7A6D5A5834B4CB069E0831753ECF65BA02B", 16)))
{
Fail("Y value incorrect");
}
if (!sKey.X.Equals(
new BigInteger("0CAF2EF547EC49C4F3A6FE6DF4223A174D01F2C115D49A6F73437C29A2A8458C", 16)))
{
Fail("X value incorrect");
}
//byte[] encodeParams = parameters.getEncoded();
byte[] encodeParams = new DsaParameter(dsaP.P, dsaP.Q, dsaP.G).GetDerEncoded();
//AlgorithmParameters a2 = AlgorithmParameters.getInstance("DSA", "BC");
//a2.init(encodeParams);
DsaParameter dsaP2 = DsaParameter.GetInstance(Asn1Object.FromByteArray(encodeParams));
DsaParameters p2 = new DsaParameters(dsaP.P, dsaP.Q, dsaP.G);
// a and a2 should be equivalent!
//byte[] encodeParams_2 = a2.GetEncoded();
byte[] encodeParams_2 = new DsaParameter(p2.P, p2.Q, p2.G).GetDerEncoded();
if (!AreEqual(encodeParams, encodeParams_2))
{
Fail("encode/decode parameters failed");
}
ISigner s = SignerUtilities.GetSigner("DSA");
byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
s.Init(true, sKey);
s.BlockUpdate(data, 0, data.Length);
byte[] sigBytes = s.GenerateSignature();
s = SignerUtilities.GetSigner("DSA");
s.Init(false, vKey);
s.BlockUpdate(data, 0, data.Length);
if (!s.VerifySignature(sigBytes))
{
Fail("DSA verification failed");
}
}
public override void PerformTest()
{
// TODO
// TestCompat();
TestNONEwithDSA();
TestECDsa239BitPrime();
TestECDsa239BitBinary();
TestECDsa239BitBinaryRipeMD160();
TestECDsa239BitBinarySha1();
TestECDsa239BitBinarySha224();
TestECDsa239BitBinarySha256();
TestECDsa239BitBinarySha384();
TestECDsa239BitBinarySha512();
TestGeneration();
TestParameters();
TestDsa2Parameters();
}
protected BigInteger[] DerDecode(
byte[] encoding)
{
Asn1Sequence s = (Asn1Sequence) Asn1Object.FromByteArray(encoding);
return new BigInteger[]
{
((DerInteger)s[0]).Value,
((DerInteger)s[1]).Value
};
}
public override string Name
{
get { return "DSA/ECDSA"; }
}
public static void Main(
string[] args)
{
RunTest(new DsaTest());
}
private class DsaTestSecureRandom
: FixedSecureRandom
{
private bool first = true;
public DsaTestSecureRandom(byte[] value)
: base(Arrays.Clone(value))
{
}
public override void NextBytes(byte[] bytes)
{
if (first)
{
base.NextBytes(bytes);
first = false;
}
else
{
bytes[bytes.Length - 1] = 2;
}
}
}
}
}
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