public virtual SignatureAndHashAlgorithm SelectClientSignatureAlgorithm(ITlsContext ctx)
{
if (ctx.IsServer)
{
throw new InvalidOperationException();
}
AssertTls12(ctx);
SignatureParameters parameters;
if (ctx.HasClientCertificateParameters)
{
parameters = ctx.ClientCertificateParameters.SignatureParameters;
}
else if (ctx.HasCurrentSignatureParameters)
{
parameters = ctx.CurrentSignatureParameters;
}
else
{
parameters = GetClientSignatureParameters(ctx);
}
if (parameters == null || parameters.IsEmpty)
{
parameters = SignatureParameters.GetDefaultServerParameters();
}
return(SelectSignatureAlgorithm(ctx, parameters));
}
public static SignatureParameters GetDefaultServerParameters()
{
var parameters = new SignatureParameters();
parameters.Add(HashAlgorithmType.Sha1);
return(parameters);
}
public static SignatureParameters GetDefaultClientParameters()
{
var parameters = new SignatureParameters();
parameters.EnsureDefaultValues();
return(parameters);
}
public static SignatureParameters Create (params HashAlgorithmType[] hashTypes)
{
var parameters = new SignatureParameters ();
foreach (var hash in hashTypes)
parameters.Add (hash);
return parameters;
}
public static SignatureParameters Create (params SignatureAndHashAlgorithm[] algorithms)
{
var parameters = new SignatureParameters ();
foreach (var algorithm in algorithms)
parameters.Add (algorithm);
return parameters;
}
protected override void Clear()
{
base.Clear();
PendingRead = false;
PendingWrite = false;
signatureParameters = null;
hasSignatureParameters = false;
serverSignatureAlgorithm = null;
}
public static SignatureParameters Create(params SignatureAndHashAlgorithm[] algorithms)
{
var parameters = new SignatureParameters();
foreach (var algorithm in algorithms)
{
parameters.Add(algorithm);
}
return(parameters);
}
public static SignatureParameters Create(params HashAlgorithmType[] hashTypes)
{
var parameters = new SignatureParameters();
foreach (var hash in hashTypes)
{
parameters.Add(hash);
}
return(parameters);
}
public void VerifySignatureParameters(ITlsContext ctx, SignatureParameters parameters)
{
foreach (var algorithm in parameters.SignatureAndHashAlgorithms)
{
if (!ctx.IsAlgorithmSupported(algorithm))
{
throw new TlsException(AlertDescription.IlegalParameter);
}
}
}
public SignatureAndHashAlgorithm SelectSignatureAlgorithm(ITlsContext ctx, SignatureParameters parameters)
{
AssertTls12(ctx);
foreach (var algorithm in parameters.SignatureAndHashAlgorithms)
{
if (ctx.IsAlgorithmSupported(algorithm))
{
return(algorithm);
}
}
throw new TlsException(AlertDescription.IlegalParameter, "No supported signature type available.");
}
public virtual SignatureParameters GetServerSignatureParameters(ITlsContext ctx)
{
if (!ctx.IsServer)
{
throw new InvalidOperationException();
}
AssertTls12(ctx);
if (ctx.HasCurrentSignatureParameters)
{
return(ctx.CurrentSignatureParameters);
}
return(SignatureParameters.GetDefaultServerParameters());
}
public virtual SignatureParameters GetClientSignatureParameters(ITlsContext ctx)
{
if (ctx.IsServer)
{
throw new InvalidOperationException();
}
SignatureParameters parameters = null;
if (ctx.SettingsProvider.HasClientSignatureParameters)
{
parameters = ctx.SettingsProvider.ClientSignatureParameters;
}
if (parameters == null || parameters.IsEmpty)
{
parameters = SignatureParameters.GetDefaultClientParameters();
}
VerifySignatureParameters(ctx, parameters);
return(parameters);
}
public void VerifySignatureParameters (ITlsContext ctx, SignatureParameters parameters)
{
foreach (var algorithm in parameters.SignatureAndHashAlgorithms) {
if (!ctx.IsAlgorithmSupported (algorithm))
throw new TlsException (AlertDescription.IlegalParameter);
}
}
public SignatureAndHashAlgorithm SelectSignatureAlgorithm (ITlsContext ctx, SignatureParameters parameters)
{
AssertTls12 (ctx);
foreach (var algorithm in parameters.SignatureAndHashAlgorithms) {
if (ctx.IsAlgorithmSupported (algorithm))
return algorithm;
}
throw new TlsException (AlertDescription.IlegalParameter, "No supported signature type available.");
}
protected override void Clear ()
{
base.Clear ();
PendingRead = false;
PendingWrite = false;
signatureParameters = null;
hasSignatureParameters = false;
serverSignatureAlgorithm = null;
}
public static SignatureParameters GetDefaultServerParameters ()
{
var parameters = new SignatureParameters ();
parameters.Add (HashAlgorithmType.Sha1);
return parameters;
}
public static SignatureParameters GetDefaultClientParameters ()
{
var parameters = new SignatureParameters ();
parameters.EnsureDefaultValues ();
return parameters;
}
