|
public ImportParameters ( |
||
| parameters | ||
| Результат | void | |
/// <summary>
/// 数字签名处理.
/// </summary>
/// <param name="HashToSign"></param>
/// <param name="DSAKeyInfo"></param>
/// <param name="HashAlg"></param>
/// <returns></returns>
public static byte[] DSASignHash(byte[] HashToSign, DSAParameters DSAKeyInfo, string HashAlg)
{
try
{
//Create a new instance of DSACryptoServiceProvider.
DSACryptoServiceProvider DSA = new DSACryptoServiceProvider();
//Import the key information.
DSA.ImportParameters(DSAKeyInfo);
//Create an DSASignatureFormatter object and pass it the
//DSACryptoServiceProvider to transfer the private key.
DSASignatureFormatter DSAFormatter = new DSASignatureFormatter(DSA);
//Set the hash algorithm to the passed value.
DSAFormatter.SetHashAlgorithm(HashAlg);
//Create a signature for HashValue and return it.
return DSAFormatter.CreateSignature(HashToSign);
}
catch (CryptographicException e)
{
Console.WriteLine(e.Message);
return null;
}
}
private static bool DSAVerifyHash(byte[] HashValue, byte[] SignedHashValue, DSAParameters publickeyinfo, string HashAlg)
{
bool verified = false;
try
{
//Create a new instance of DSACryptoServiceProvider
using(DSACryptoServiceProvider dsa = new DSACryptoServiceProvider())
{
//Import the key information
dsa.ImportParameters(publickeyinfo);
// Create an DSASignatureDeformatter object and pass it the DSACryptoServiceProvider to transfer the private key.
//DSASignatureDeformatter dsaDeformatter = new DSASignatureDeformatter(dsa);
//Set the hash algorithm to the passed value.
//dsaDeformatter.SetHashAlgorithm(HashAlg);
//Verify signature and return the result
//Verify hashed files //Verify hashed data
verified = dsa.VerifyData(HashValue, SignedHashValue); //dsaDeformatter.VerifySignature(HashValue, SignedHashValue);
}
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
return verified;
}
void Sign(String[] args)
{
if (args.Length != 1)
{
Usage();
return;
}
try
{
String productCode = args[0];
byte[] pcode = StringUtils.Str2Bytes(productCode);
for (int i = 0; i < 1; ++i)
{
DSAParameters dsap = CryptographyParams.DSAP;
dsap.X = X;
DSACryptoServiceProvider dsa = new DSACryptoServiceProvider(512);
dsa.ImportParameters(dsap);
String oid = CryptoConfig.MapNameToOID(LicensingStrings.SHA1);
byte[] acode = dsa.SignHash(pcode, oid);
String activationCode = StringUtils.Bytes2Str(acode);
System.Console.Out.WriteLine(activationCode);
}
}
catch (Exception e)
{
System.Console.Out.WriteLine("Error: {0}\n", e.Message);
}
}
public bool verify(byte[] sig)
{
m_cs.Close();
DSACryptoServiceProvider DSA = new DSACryptoServiceProvider();
DSA.ImportParameters(m_DSAKeyInfo);
DSASignatureDeformatter DSADeformatter = new DSASignatureDeformatter(DSA);
DSADeformatter.SetHashAlgorithm("SHA1");
long i = 0;
long j = 0;
byte[] tmp;
//This makes sure sig is always 40 bytes?
if (sig[0] == 0 && sig[1] == 0 && sig[2] == 0)
{
long i1 = (sig[i++] << 24) & 0xff000000;
long i2 = (sig[i++] << 16) & 0x00ff0000;
long i3 = (sig[i++] << 8) & 0x0000ff00;
long i4 = (sig[i++]) & 0x000000ff;
j = i1 | i2 | i3 | i4;
i += j;
i1 = (sig[i++] << 24) & 0xff000000;
i2 = (sig[i++] << 16) & 0x00ff0000;
i3 = (sig[i++] << 8) & 0x0000ff00;
i4 = (sig[i++]) & 0x000000ff;
j = i1 | i2 | i3 | i4;
tmp = new byte[j];
Array.Copy(sig, i, tmp, 0, j);
sig = tmp;
}
return DSADeformatter.VerifySignature(m_sha1, sig);
}
//-------------------------------------------------------------------
public static bool DSAVerifyHash(byte[] HashValue, byte[] SignedHashValue,
DSAParameters DSAKeyInfo, string HashAlg)
{
bool verified = false;
try
{
// Создаем новый экземпляр класса DSACryptoServiceProvider.
using (DSACryptoServiceProvider DSA = new DSACryptoServiceProvider())
{
// Импортируем ключи
DSA.ImportParameters(DSAKeyInfo);
//Создаем объект класса DSASignatureFormatter и передаем ему DSACryptoServiceProvider закрытый ключ
DSASignatureDeformatter DSADeformatter = new DSASignatureDeformatter(DSA);
// Устанавливаем алгоритм шифрования
DSADeformatter.SetHashAlgorithm(HashAlg);
// Сверяем подписи и возвращаем результат
verified = DSADeformatter.VerifySignature(HashValue, SignedHashValue);
}
}
catch (CryptographicException e)
{
Console.WriteLine(e.Message);
}
return verified;
}
//-------------------------------------------------------------------------
// Шифруем закрытым ключем Хеш-таблицу
public static byte[] DSASignHash(byte[] HashToSign, DSAParameters DSAKeyInfo,
string HashAlg)
{
byte[] sig = null;
try
{
// Создаем новыый экземпляр класса
using (DSACryptoServiceProvider DSA = new DSACryptoServiceProvider())
{
// Импортируем ключи, в данном случае закрытый ключ
DSA.ImportParameters(DSAKeyInfo);
// Создаем объект класса DSASignatureFormatter и передаем ему DSACryptoServiceProvider закрытый ключ
DSASignatureFormatter DSAFormatter = new DSASignatureFormatter(DSA);
// Устанавливаем алгоритм шифрования
DSAFormatter.SetHashAlgorithm(HashAlg);
// Создаем подпись для хеш-таблицы и возвращаем ее значение
sig = DSAFormatter.CreateSignature(HashToSign);
}
}
catch (CryptographicException e)
{
Console.WriteLine(e.Message);
}
return sig;
}
/// <summary>
/// Gets the signature.
/// </summary>
/// <param name="key">The key data bytes.</param>
/// <returns></returns>
public override byte[] GetSignature(IEnumerable<byte> key)
{
var data = key.ToArray();
//using (var sha1 = new Renci.SshNet.Security.Cryptography.SHA1Hash())
using (var sha1 = new System.Security.Cryptography.SHA1CryptoServiceProvider())
{
using (var cs = new System.Security.Cryptography.CryptoStream(System.IO.Stream.Null, sha1, System.Security.Cryptography.CryptoStreamMode.Write))
{
cs.Write(data, 0, data.Length);
}
var dsaKeyInfo = new System.Security.Cryptography.DSAParameters();
dsaKeyInfo.X = this._privateKey.TrimLeadingZero().ToArray();
dsaKeyInfo.P = this._p.TrimLeadingZero().ToArray();
dsaKeyInfo.Q = this._q.TrimLeadingZero().ToArray();
dsaKeyInfo.G = this._g.TrimLeadingZero().ToArray();
using (var DSA = new System.Security.Cryptography.DSACryptoServiceProvider())
{
DSA.ImportParameters(dsaKeyInfo);
var DSAFormatter = new DSASignatureFormatter(DSA);
DSAFormatter.SetHashAlgorithm("SHA1");
var signature = DSAFormatter.CreateSignature(sha1);
return new SignatureKeyData
{
AlgorithmName = this.Name,
Signature = signature,
}.GetBytes().ToArray();
}
}
}
public void DigitalSignatureAlgorithm_compare_parameters_generation_with_original_Pidgin_OffTheRecord_data()
{
// Arrange
const string p =
"AEC0FBB4CEA96EF8BDD0E91D1BA2F6641B6535CBDA8D739CC2898FE7B472865AB60AD2B1BAA2368603C7439E63BC2F2F33D422E70173F70DB738DF5979EAEAF3CAC343CBF711960E16786703C80DF0734D8330DC955DA84B521DAB5C729202F1244D805E6BF2CC7A7142CAD74BE5FFFC14B9CCB6CABB7DB10A8F2DDB4E82383F";
const string q = "A2A2BC20E2D94C44C63608479C79068CE7914EF3";
const string g =
"69B9FC5A73F3F6EA3A86F8FA3A203F42DACDC3A1516002025E5765A9DCB975F348ACBBA2116230E19CE3FC5256546FD168A2940809BDA8655771967E9CD90AF44D2C20F97F448494213A775E23607F33C255A9A74E2A5FC7B4D50BAD024D7EFAC282E67332D51A5F69239011FE058D7E75E97A788FBD5B3BAD796B2C6D8C6C3E";
const string y =
"9931144F3059D92FCB2AAC03B130DAE43ED1EF30AA2F0E670C3974C3E80C7110D1A60210F92479D7F640C20E1F16E01B4A72FF8D45443B01EBE2D67DF49791CAC6191B159AC39446EB6A2EA597B6B678CC3157AECEAB12A804CF0772068A942EC819138EDD6005620FE746522FF408BBC8211ABD9D6016AA46EEC87F3F04CFA4";
const string x = "48BFDA215C31A9F0B226B3DB11F862450A0F30DA"; /* private key */
// Act
var param = new DSAParameters();
param.X = General.StringToByteArray(x);
param.P = General.StringToByteArray(p);
param.Q = General.StringToByteArray(q);
param.G = General.StringToByteArray(g);
param.Y = General.StringToByteArray(y);
var dsa = new DSACryptoServiceProvider(1024);
dsa.ImportParameters(param);
DSAParameters output = dsa.ExportParameters(true);
// Assert
param.X.SequenceEqual(output.X).Should().BeTrue();
param.P.SequenceEqual(output.P).Should().BeTrue();
param.Q.SequenceEqual(output.Q).Should().BeTrue();
param.G.SequenceEqual(output.G).Should().BeTrue();
param.Y.SequenceEqual(output.Y).Should().BeTrue();
}
public bool ChangeNick(string oldnick, string newnick, byte[] newnickhashed)
{
bool result = false;
Chat instance = new Chat();
instance.Deserialiser();
User user = instance.SearchNick(oldnick);
if (user != null) //si l'utilisateur actuel existe
{
if (instance.SearchNick(newnick) == null) //si le nouveau login choisi est bon
{
ASCIIEncoding encoding = new ASCIIEncoding();
DSACryptoServiceProvider mycrypto = new DSACryptoServiceProvider();
mycrypto.ImportParameters(user.Publickey);
if (mycrypto.VerifyData(encoding.GetBytes(newnick), newnickhashed)) //verification de la provenance du message
{
instance.RemoveUser(user);
user.Login = newnick;
instance.AddUser(user);
instance.Serialiser();
result = true;
}
}
}
return result;
}
public byte[] sign()
{
m_cs.Close();
DSACryptoServiceProvider DSA = new DSACryptoServiceProvider();
DSA.ImportParameters(m_DSAKeyInfo);
DSASignatureFormatter DSAFormatter = new DSASignatureFormatter(DSA);
DSAFormatter.SetHashAlgorithm("SHA1");
byte[] sig = DSAFormatter.CreateSignature(m_sha1);
return sig;
}
/// <summary>
/// Create a public key block from a private key.
/// </summary>
/// <param name="privateKey">The <see cref="DSA" /> PrivateKey.</param>
/// <returns>The <see cref="DSACryptoServiceProvider" /> PublicKey.</returns>
public static DSACryptoServiceProvider make_pubkey(DSA privateKey)
{
var publicKey = new DSACryptoServiceProvider(1024);
publicKey.ImportParameters(privateKey.ExportParameters(false));
if (!publicKey.PublicOnly)
{
publicKey.Dispose();
throw new Exception("PublicKey contains PrivateKey information, cancelling.");
}
return publicKey;
}
internal PrivateKey(DSAParameters dsaParameters)
{
privateKey = dsaParameters;
var dsa = new DSACryptoServiceProvider(1024);
dsa.ImportParameters(privateKey);
PublicKey = dsa.ExportParameters(false);
PublicKeyAsMPI = MultiPrecisionInteger.ByteArrayToMpi(PublicKey.P)
.Concat(MultiPrecisionInteger.ByteArrayToMpi(PublicKey.Q))
.Concat(MultiPrecisionInteger.ByteArrayToMpi(PublicKey.G))
.Concat(MultiPrecisionInteger.ByteArrayToMpi(PublicKey.Y))
.ToArray();
}
public bool ReceiveKey(byte[] pseudo,byte[] hash, DSAParameters key )
{
bool ret = false;
ASCIIEncoding codage = new ASCIIEncoding();
DSACryptoServiceProvider mycrypto = new DSACryptoServiceProvider();
mycrypto.ImportParameters(key);
if(mycrypto.VerifyData(pseudo,hash))
{
string nick = codage.GetString(pseudo);
_clients.Add(nick, key);
ret = true;
}
return ret;
}
public override void Read(System.IO.BinaryReader stream)
{
//Read P, Q, G, and Y.
DSAParameters parameters = new DSAParameters();
parameters.P = ReadBytes(stream);
parameters.Q = ReadBytes(stream);
parameters.G = ReadBytes(stream);
parameters.Y = ReadBytes(stream);
//Set up the new DSA provider.
DSACryptoServiceProvider dsa = new System.Security.Cryptography.DSACryptoServiceProvider();
dsa.ImportParameters(parameters);
//Initialize the algorithm.
InitializeAlgorithm(dsa);
}
public string CreateSignatureForStream(Stream stream)
{
byte[] hash = (new SHA1Managed()).ComputeHash(stream);//for file or text
try
{
using (var dsaCryptoProvider = new DSACryptoServiceProvider())
{
dsaCryptoProvider.ImportParameters(PrivateKey);
var dsaFormatter = new DSASignatureFormatter(dsaCryptoProvider);
dsaFormatter.SetHashAlgorithm("SHA1");
byte[] signature = dsaFormatter.CreateSignature(hash);
return ByteArrayToString(signature);
}
}
catch (CryptographicException e)
{
return null;
}
}
public bool ReceiveMessage(byte[] mess, byte[] hashMess, string pseudo)
{
DSAParameters key;
ASCIIEncoding codage = new ASCIIEncoding();
DSACryptoServiceProvider mycrypto = new DSACryptoServiceProvider();
bool ret = false;
if (_clients.TryGetValue(pseudo,out key))
{
mycrypto.ImportParameters(key);
if (mycrypto.VerifyData(mess, hashMess))
{
Console.WriteLine(pseudo + " a ecrit: " + codage.GetString(mess));
ret = true;
}
}
return ret;
}
private void ImportPrivateKey (X509Certificate certificate, CspParameters cspParams)
{
RSACryptoServiceProvider rsaCsp = certificate.RSA as RSACryptoServiceProvider;
if (rsaCsp != null) {
if (rsaCsp.PublicOnly)
return;
RSACryptoServiceProvider csp = new RSACryptoServiceProvider(cspParams);
csp.ImportParameters(rsaCsp.ExportParameters(true));
csp.PersistKeyInCsp = true;
return;
}
RSAManaged rsaMng = certificate.RSA as RSAManaged;
if (rsaMng != null) {
if (rsaMng.PublicOnly)
return;
RSACryptoServiceProvider csp = new RSACryptoServiceProvider(cspParams);
csp.ImportParameters(rsaMng.ExportParameters(true));
csp.PersistKeyInCsp = true;
return;
}
DSACryptoServiceProvider dsaCsp = certificate.DSA as DSACryptoServiceProvider;
if (dsaCsp != null) {
if (dsaCsp.PublicOnly)
return;
DSACryptoServiceProvider csp = new DSACryptoServiceProvider(cspParams);
csp.ImportParameters(dsaCsp.ExportParameters(true));
csp.PersistKeyInCsp = true;
}
}
static public DSA FromCapiPrivateKeyBlobDSA (byte[] blob, int offset)
{
if (blob == null)
throw new ArgumentNullException ("blob");
if (offset >= blob.Length)
throw new ArgumentException ("blob is too small.");
DSAParameters dsap = new DSAParameters ();
try {
if ((blob [offset] != 0x07) || // PRIVATEKEYBLOB (0x07)
(blob [offset + 1] != 0x02) || // Version (0x02)
(blob [offset + 2] != 0x00) || // Reserved (word)
(blob [offset + 3] != 0x00) ||
(ToUInt32LE (blob, offset + 8) != 0x32535344)) // DWORD magic
throw new CryptographicException ("Invalid blob header");
int bitlen = ToInt32LE (blob, offset + 12);
int bytelen = bitlen >> 3;
int pos = offset + 16;
dsap.P = new byte [bytelen];
Buffer.BlockCopy (blob, pos, dsap.P, 0, bytelen);
Array.Reverse (dsap.P);
pos += bytelen;
dsap.Q = new byte [20];
Buffer.BlockCopy (blob, pos, dsap.Q, 0, 20);
Array.Reverse (dsap.Q);
pos += 20;
dsap.G = new byte [bytelen];
Buffer.BlockCopy (blob, pos, dsap.G, 0, bytelen);
Array.Reverse (dsap.G);
pos += bytelen;
dsap.X = new byte [20];
Buffer.BlockCopy (blob, pos, dsap.X, 0, 20);
Array.Reverse (dsap.X);
pos += 20;
dsap.Counter = ToInt32LE (blob, pos);
pos += 4;
dsap.Seed = new byte [20];
Buffer.BlockCopy (blob, pos, dsap.Seed, 0, 20);
Array.Reverse (dsap.Seed);
pos += 20;
}
catch (Exception e) {
throw new CryptographicException ("Invalid blob.", e);
}
#if INSIDE_CORLIB && MOBILE
DSA dsa = (DSA)DSA.Create ();
dsa.ImportParameters (dsap);
#else
DSA dsa = null;
try {
dsa = (DSA)DSA.Create ();
dsa.ImportParameters (dsap);
}
catch (CryptographicException ce) {
// this may cause problem when this code is run under
// the SYSTEM identity on Windows (e.g. ASP.NET). See
// http://bugzilla.ximian.com/show_bug.cgi?id=77559
try {
CspParameters csp = new CspParameters ();
csp.Flags = CspProviderFlags.UseMachineKeyStore;
dsa = new DSACryptoServiceProvider (csp);
dsa.ImportParameters (dsap);
}
catch {
// rethrow original, not the later, exception if this fails
throw ce;
}
}
#endif
return dsa;
}
public static Boolean Test(Session session)
{
Boolean bRes = true;
//String xml1, xml2, xml3;
//String sign1, sign2, sign3;
byte[] hashval = new byte[20];
for (int i = 0; i < hashval.Length; i++) hashval[i] = (Byte)i;
DSACryptoServiceProvider dsa1 = new DSACryptoServiceProvider(session);
DSACryptoServiceProvider dsa2 = new DSACryptoServiceProvider(session);
//DSACryptoServiceProvider dsa3 = new DSACryptoServiceProvider(session);
DSAParameters dsaParams = dsa1.ExportParameters(true);
byte[] sig1 = dsa1.SignHash(hashval, MechanismType.SHA_1);
//sign1 = (Convert.ToBase64String(sig1));
//xml1 = dsa1.ToXmlString(true);
dsa2.ImportParameters(dsaParams);
//dsa2.FromXmlString(xml1);
//xml2 = (dsa2.ToXmlString(true));
//xml3 = (dsa3.ToXmlString(true));
byte[] sig2 = dsa2.SignHash(hashval, MechanismType.SHA_1);
//sign2 = (Convert.ToBase64String(sig2));
//dsa3.HashAlgorithm = MechanismType.SHA_1;
//byte[] sig3 = dsa3.SignHash(hashval);
//sign3 = (Convert.ToBase64String(sig3));
//if ((xml1 != xml2) || (xml2 != xml3))
//{
// Log.Comment("WRONG : ToXmlString results are different");
// Log.Comment("XML1:\n" + xml1);
// Log.Comment("XML2:\n" + xml2);
// Log.Comment("XML3:\n" + xml3);
// bRes = false;
//}
//Log.Comment(xml1);
/* if ( (sign1!=sign2) || (sign2!=sign3) ) {
Log.Comment("WRONG : signatures are different");
Log.Comment("First: " + sign1);
Log.Comment("Second: " + sign2);
Log.Comment("Third: " + sign3);
bRes = false;
} */
//Log.Comment("\n" + sign1);
if (!dsa1.VerifyHash(hashval, MechanismType.SHA_1, sig2))
{
Log.Comment("WRONG : Signature check (1) failed");
bRes = false;
}
if (!dsa2.VerifyHash(hashval, MechanismType.SHA_1, sig1))
{
Log.Comment("WRONG : Signature check (1) failed");
bRes = false;
}
//if (!dsa3.VerifyHash(hashval, sig1))
//{
// Log.Comment("WRONG : Signature check (1) failed");
// bRes = false;
//}
return bRes;
}
public void ExportCspBlob_MissingPrivateKey_PublicOnly ()
{
dsa = new DSACryptoServiceProvider (minKeySize);
DSAParameters dsap = AllTests.GetKey (false);
dsa.ImportParameters (dsap);
byte[] pubkey = dsa.ExportCspBlob (false);
Assert.AreEqual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itConverter.ToString (pubkey));
}
static bool VerifyDsaMessage(byte[] keyData, byte[] message, byte[] signature)
{
// Load the Public Key X.509 Format
AsnKeyParser keyParser = new AsnKeyParser(keyData);
DSAParameters publicKey = keyParser.ParseDSAPublicKey();
CspParameters csp = new CspParameters();
// Cannot use PROV_DSS_DH
const int PROV_DSS = 3;
csp.ProviderType = PROV_DSS;
const int AT_SIGNATURE = 2;
csp.KeyNumber = AT_SIGNATURE;
csp.KeyContainerName = "DSA Test (OK to Delete)";
DSACryptoServiceProvider dsa = new DSACryptoServiceProvider(csp);
dsa.PersistKeyInCsp = false;
dsa.ImportParameters(publicKey);
SHA1 sha = new SHA1CryptoServiceProvider();
byte[] hash = sha.ComputeHash(message);
DSASignatureDeformatter verifier = new DSASignatureDeformatter(dsa);
verifier.SetHashAlgorithm("SHA1");
bool result = verifier.VerifySignature(hash, signature);
// See http://blogs.msdn.com/tess/archive/2007/10/31/
// asp-net-crash-system-security-cryptography-cryptographicexception.aspx
dsa.Clear();
return result;
}
public void ExportCspBlob_MissingPrivateKey ()
{
dsa = new DSACryptoServiceProvider (minKeySize);
DSAParameters dsap = AllTests.GetKey (false);
dsa.ImportParameters (dsap);
dsa.ExportCspBlob (true);
}
// This case wasn't fixed in Nov CTP
public void CspKeyContainerInfo_ImportedPublicKey ()
{
dsa = new DSACryptoServiceProvider (minKeySize);
DSAParameters rsap = AllTests.GetKey (false);
dsa.ImportParameters (rsap);
CspKeyContainerInfo info = dsa.CspKeyContainerInfo;
Assert.IsFalse (info.Accessible, "Accessible");
// info.CryptoKeySecurity throws a CryptographicException at this stage
// info.Exportable throws a CryptographicException at this stage
Assert.IsFalse (info.HardwareDevice, "HardwareDevice");
Assert.IsNotNull (info.KeyContainerName, "KeyContainerName");
Assert.AreEqual (KeyNumber.Signature, info.KeyNumber, "KeyNumber");
Assert.IsFalse (info.MachineKeyStore, "MachineKeyStore");
// info.Protected throws a CryptographicException at this stage
Assert.IsNotNull (info.ProviderName, "ProviderName");
Assert.AreEqual (13, info.ProviderType, "ProviderType");
Assert.IsTrue (info.RandomlyGenerated, "RandomlyGenerated");
Assert.IsFalse (info.Removable, "Removable");
// info.UniqueKeyContainerName throws a CryptographicException at this stage
}
public void CspKeyContainerInfo_ImportedKeypair ()
{
dsa = new DSACryptoServiceProvider (minKeySize);
DSAParameters rsap = AllTests.GetKey (true);
dsa.ImportParameters (rsap);
CspKeyContainerInfo info = dsa.CspKeyContainerInfo;
Assert.IsTrue (info.Accessible, "Accessible");
// FIXME AssertNotNull ("CryptoKeySecurity", info.CryptoKeySecurity);
Assert.IsTrue (info.Exportable, "Exportable");
Assert.IsFalse (info.HardwareDevice, "HardwareDevice");
Assert.IsNotNull (info.KeyContainerName, "KeyContainerName");
Assert.AreEqual (KeyNumber.Signature, info.KeyNumber, "KeyNumber");
Assert.IsFalse (info.MachineKeyStore, "MachineKeyStore");
Assert.IsFalse (info.Protected, "Protected");
Assert.IsNotNull (info.ProviderName, "ProviderName");
Assert.AreEqual (13, info.ProviderType, "ProviderType");
Assert.IsTrue (info.RandomlyGenerated, "RandomlyGenerated");
Assert.IsFalse (info.Removable, "Removable");
Assert.IsNotNull (info.UniqueKeyContainerName, "UniqueKeyContainerName");
}
public void DSAImportMissingSeed ()
{
DSAParameters input = AllTests.GetKey (false);
input.Seed = null;
dsa = new DSACryptoServiceProvider (1024);
dsa.ImportParameters (input);
Assert.AreEqual (1024, dsa.KeySize, "MissingSeed.KeySize");
}
public void DSAImportMissingY ()
{
DSAParameters input = AllTests.GetKey (false);
input.Y = null;
dsa = new DSACryptoServiceProvider (1024);
dsa.ImportParameters (input);
}
public bool LogIn(string nick, string password,byte[] nickhashed, int counter, byte[] G, byte[] J, byte[] P, byte[] Q, byte[] Seed, byte[] X, byte[] Y)
{
bool result = false;
Chat instance = new Chat();
instance.Deserialiser();
User user = instance.SearchNick(nick);
if (user != null) //si l'utilisateur existe
{
if (user.CheckPassword(password)) //si le mot de passe de l'utilisateur est bon
{
DSACryptoServiceProvider mycrypto = new DSACryptoServiceProvider();
DSAParameters key = Security.RecreateKey(counter, G, J, P, Q, Seed, X, Y);
mycrypto.ImportParameters(key);
ASCIIEncoding encoding = new ASCIIEncoding();
if (mycrypto.VerifyData(encoding.GetBytes(nick), nickhashed)) //verification de la cle publique recue
{
result = true;
instance.RemoveUser(user);
user.Publickey = key; //on stocke la cle publique pour la reception prochaine de message
instance.AddUser(user);
instance.Serialiser();
}
}
}
return result;
}
public void ImportDisposed ()
{
DSACryptoServiceProvider import = new DSACryptoServiceProvider (minKeySize);
import.Clear ();
import.ImportParameters (AllTests.GetKey (false));
// no exception from Fx 2.0 +
}
/// <summary>
/// Verifies the signature.
/// </summary>
/// <param name="hash">The hash.</param>
/// <param name="signature">The signature.</param>
/// <returns>
/// true if signature verified; otherwise false.
/// </returns>
public override bool VerifySignature(IEnumerable<byte> hash, IEnumerable<byte> signature)
{
using (var sha1 = new SHA1CryptoServiceProvider())
{
using (var cs = new CryptoStream(System.IO.Stream.Null, sha1, CryptoStreamMode.Write))
{
var data = hash.ToArray();
cs.Write(data, 0, data.Length);
}
using (var dsa = new DSACryptoServiceProvider())
{
dsa.ImportParameters(new DSAParameters
{
Y = _publicKey.TrimLeadingZero().ToArray(),
P = _p.TrimLeadingZero().ToArray(),
Q = _q.TrimLeadingZero().ToArray(),
G = _g.TrimLeadingZero().ToArray(),
});
var dsaDeformatter = new DSASignatureDeformatter(dsa);
dsaDeformatter.SetHashAlgorithm("SHA1");
long i = 0;
long j = 0;
byte[] tmp;
var sig = signature.ToArray();
if (sig[0] == 0 && sig[1] == 0 && sig[2] == 0)
{
long i1 = (sig[i++] << 24) & 0xff000000;
long i2 = (sig[i++] << 16) & 0x00ff0000;
long i3 = (sig[i++] << 8) & 0x0000ff00;
long i4 = (sig[i++]) & 0x000000ff;
j = i1 | i2 | i3 | i4;
i += j;
i1 = (sig[i++] << 24) & 0xff000000;
i2 = (sig[i++] << 16) & 0x00ff0000;
i3 = (sig[i++] << 8) & 0x0000ff00;
i4 = (sig[i++]) & 0x000000ff;
j = i1 | i2 | i3 | i4;
tmp = new byte[j];
Array.Copy(sig, (int)i, tmp, 0, (int)j);
sig = tmp;
}
return dsaDeformatter.VerifySignature(sha1, sig);
}
}
}
private static byte[] DSASignHash(byte[] HashValue, DSAParameters privatekeyinfo, string HashAlg)
{
byte[] sig = null;
try
{
//Create a new instance of DSACryptoServiceProvider
using(DSACryptoServiceProvider dsa = new DSACryptoServiceProvider())
{
//Import the key information
dsa.ImportParameters(privatekeyinfo);
// Create an DSASignatureFormatter object and pass it the DSACryptoServiceProvider to transfer the private key.
//DSASignatureFormatter dsaFormatter = new DSASignatureFormatter(dsa);
//Set the Hash algorithm to the passed value.
//dsaFormatter.SetHashAlgorithm(HashAlg);
//Create a signature to the hash value and return it
//To format files // To format hash data
sig = dsa.SignData(HashValue, 0, HashValue.Length); //dsa.SignHash(HashValue, "SHA1"); //dsaFormatter.CreateSignature(HashValue);
}
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
return sig;
}
public static bool myVerifyHash(byte[] HashValue, byte[] SignedHashValue, DSAParameters DSAKeyInfo, string HashAlg)
{
try
{
//Create a new instance of DSACryptoServiceProvider.
DSACryptoServiceProvider DSA = new DSACryptoServiceProvider();
//Import the key information.
DSA.ImportParameters(DSAKeyInfo);
//DSAKeyInfo.
//Create an DSASignatureDeformatter object and pass it the
//DSACryptoServiceProvider to transfer the private key.
DSASignatureDeformatter DSADeformatter = new DSASignatureDeformatter(DSA);
//Set the hash algorithm to the passed value.
DSADeformatter.SetHashAlgorithm(HashAlg);
//Verify signature and return the result.
return DSADeformatter.VerifySignature(HashValue, SignedHashValue);
}
catch (CryptographicException e)
{
Console.WriteLine(e.Message);
return false;
}
}
