// Copied from ACS code
// This method returns an AsymmetricSignatureFormatter capable of supporting Sha256 signatures.
private static RSACryptoServiceProvider GetCryptoProviderForSha256(RSACryptoServiceProvider rsaProvider)
{
const int PROV_RSA_AES = 24; // CryptoApi provider type for an RSA provider supporting sha-256 digital signatures
// On Mono, use the default ProviderType
if (rsaProvider.CspKeyContainerInfo.ProviderType == PROV_RSA_AES || Mono.IsMono())
{
return(rsaProvider);
}
CspParameters csp = new CspParameters
{
ProviderType = PROV_RSA_AES,
KeyContainerName = rsaProvider.CspKeyContainerInfo.KeyContainerName,
KeyNumber = (int)rsaProvider.CspKeyContainerInfo.KeyNumber
};
if (rsaProvider.CspKeyContainerInfo.MachineKeyStore)
{
csp.Flags = CspProviderFlags.UseMachineKeyStore;
}
//
// If UseExistingKey is not specified, the CLR will generate a key for a non-existent group.
// With this flag, a CryptographicException is thrown instead.
//
csp.Flags |= CspProviderFlags.UseExistingKey;
return(new RSACryptoServiceProvider(csp));
}
public static TokenResponse ReadErrorResponse(WebResponse response)
{
if (response == null)
{
return(new TokenResponse
{
Error = AdalError.ServiceReturnedError,
ErrorDescription = AdalErrorMessage.ServiceReturnedError
});
}
Stream responseStream = response.GetResponseStream();
if (responseStream == null)
{
return(new TokenResponse
{
Error = AdalError.Unknown,
ErrorDescription = AdalErrorMessage.Unknown
});
}
TokenResponse tokenResponse;
try
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(TokenResponse));
tokenResponse = ((TokenResponse)serializer.ReadObject(responseStream));
// Reset stream position to make it possible for application to read WebException body again
// Not supported in Mono
if (!Mono.IsMono())
{
responseStream.Position = 0;
}
}
catch (SerializationException)
{
// Not supported in Mono
if (!Mono.IsMono())
{
responseStream.Position = 0;
}
tokenResponse = new TokenResponse
{
Error = (((HttpWebResponse)response).StatusCode == HttpStatusCode.ServiceUnavailable) ?
AdalError.ServiceUnavailable :
AdalError.Unknown,
ErrorDescription = HttpHelper.ReadStreamContent(responseStream)
};
}
return(tokenResponse);
}
