public IActionResult Index(string plainText)
        {
            var result = new HashResult
            {
                PlainText       = plainText,
                AlgorithmName   = _hashAlgorithm.Name,
                RecentRequests  = _applicationState.GetRecentHashes(_hashAlgorithm.Name),
                MetaDescription = MetaDescription,
                MetaKeywords    = MetaKeywords,
                HashDescription = HashDescription
            };

            if (!string.IsNullOrEmpty(plainText))
            {
                _applicationState.AddPlainText(_hashAlgorithm.Name, plainText);
                result.Hash = _hashAlgorithm.ComputeHash(plainText);
            }

            return(View("~/Views/Hash/Index.cshtml", result));
        }