void Common(int dwKeySize, bool parameters)
{
LegalKeySizesValue = new KeySizes [1];
LegalKeySizesValue [0] = new KeySizes(512, 1024, 64);
// will throw an exception is key size isn't supported
KeySize = dwKeySize;
dsa = new DSAManaged(dwKeySize);
dsa.KeyGenerated += new DSAManaged.KeyGeneratedEventHandler(OnKeyGenerated);
persistKey = parameters;
if (parameters)
{
return;
}
var p = new CspParameters(PROV_DSS_DH);
if (useMachineKeyStore)
{
p.Flags |= CspProviderFlags.UseMachineKeyStore;
}
store = new KeyPairPersistence(p);
// no need to load - it cannot exists
}
public DSACryptoServiceProvider(int dwKeySize, CspParameters parameters)
{
LegalKeySizesValue = new KeySizes [1];
LegalKeySizesValue [0] = new KeySizes(512, 1024, 64);
// will throw an exception is key size isn't supported
KeySize = dwKeySize;
dsa = new DSAManaged(dwKeySize);
dsa.KeyGenerated += new DSAManaged.KeyGeneratedEventHandler(OnKeyGenerated);
persistKey = (parameters != null);
if (parameters == null)
{
parameters = new CspParameters(PROV_DSS_DH);
if (useMachineKeyStore)
{
parameters.Flags |= CspProviderFlags.UseMachineKeyStore;
}
store = new KeyPairPersistence(parameters);
// no need to load - it cannot exists
}
else
{
store = new KeyPairPersistence(parameters);
store.Load();
if (store.KeyValue != null)
{
persisted = true;
this.FromXmlString(store.KeyValue);
}
}
}
/// <summary>Initializes a new instance of the <see cref="T:System.Security.Cryptography.DSACryptoServiceProvider" /> class with the specified key size and parameters for the cryptographic service provider (CSP).</summary>
/// <param name="dwKeySize">The size of the key for the cryptographic algorithm in bits. </param>
/// <param name="parameters">The parameters for the CSP. </param>
/// <exception cref="T:System.Security.Cryptography.CryptographicException">The CSP cannot be acquired.-or- The key cannot be created. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="dwKeySize" /> is out of range.</exception>
public DSACryptoServiceProvider(int dwKeySize, CspParameters parameters)
{
this.LegalKeySizesValue = new KeySizes[1];
this.LegalKeySizesValue[0] = new KeySizes(512, 1024, 64);
this.KeySize = dwKeySize;
this.dsa = new DSAManaged(dwKeySize);
this.dsa.KeyGenerated += this.OnKeyGenerated;
this.persistKey = (parameters != null);
if (parameters == null)
{
parameters = new CspParameters(13);
if (DSACryptoServiceProvider.useMachineKeyStore)
{
parameters.Flags |= CspProviderFlags.UseMachineKeyStore;
}
this.store = new KeyPairPersistence(parameters);
}
else
{
this.store = new KeyPairPersistence(parameters);
this.store.Load();
if (this.store.KeyValue != null)
{
this.persisted = true;
this.FromXmlString(this.store.KeyValue);
}
}
}