/// <summary>
/// Assert matching signature
/// </summary>
/// <param name="httpContext"></param>
/// <returns></returns>
public override bool AssertSignature(HttpContext httpContext)
{
var signature = GetSignature(httpContext);
if (!string.IsNullOrEmpty(signature))
{
var requestBody = RequestBody(httpContext).GetAwaiter().GetResult();
var hash = new HMACSHA1(Encoding.ASCII.GetBytes(_options.ApiKey))
.ComputeHash(Encoding.ASCII.GetBytes(requestBody))
.Aggregate(string.Empty, (s, e) => s + String.Format("{0:x2}", e), s => s);
if (!hash.Equals(signature, StringComparison.InvariantCultureIgnoreCase))
{
throw new WebHookBadSignatureExpcetion("WebHook Signatures didn't match!");
}
}
else
{
throw new WebHookMissedSignatureException("WebHook must be signed");
}
return(true);
}
