protected async Task GivenInvalidSignature()
{
#if NET452
var key = Options.Key.GetSymmetricKey();
#endif
#if NETCOREAPP2_0
var key = Options.Key.Key;
#endif
using (var hmac = new HMACSHA256(key))
{
var originalMessageHeaders = Message.Headers;
var modifiedHeaders = new MessageHeaders(originalMessageHeaders)
{
Origination = new Uri("urn:localhost/platibus2")
};
using (var cleartextStream = new MemoryStream())
{
using (var messageWriter = new MessageWriter(cleartextStream, Encoding.UTF8, true))
{
await messageWriter.WriteMessageHeaders(modifiedHeaders);
}
var invalidSignature = hmac.ComputeHash(cleartextStream);
var encryptedHeaders = new EncryptedMessageHeaders(EncryptedMessage.Headers)
{
Signature = Convert.ToBase64String(invalidSignature)
};
EncryptedMessage = new Message(encryptedHeaders, EncryptedMessage.Content);
}
}
}
protected void GivenCorruptedSignature()
{
var encryptedHeaders = new EncryptedMessageHeaders(EncryptedMessage.Headers)
{
Signature = Convert.ToBase64String(Encoding.UTF8.GetBytes("Bad signature"))
};
EncryptedMessage = new Message(encryptedHeaders, EncryptedMessage.Content);
}
protected void GivenMissingSignature()
{
var encryptedHeaders = new EncryptedMessageHeaders(EncryptedMessage.Headers)
{
Signature = null
};
EncryptedMessage = new Message(encryptedHeaders, EncryptedMessage.Content);
}
