public static string hash_SHA256(this string text, string salt)
{
var stringToHash = text + salt;
var sha256 = SHA256.Create();
var hashBytes = sha256.ComputeHash(stringToHash.asciiBytes());
var hashString = new StringBuilder();
foreach (byte b in hashBytes)
hashString.Append(b.ToString("x2"));
return hashString.str();
}
