ASP.NET C# Rsa and Sha1 sign function, PEM key format

I'm building a website for football bets that a user will choose (1, x, 2) for a football match. If the user finds the prediction 1 point should be put in his profile(pointsAwarded) and then his TotalPoints will add-up after succesfull predictions. Basically i want a function that when the administrator uploads the scores for each match, it will automatically check if the HomeScore > AwayScore = 1, HomeScore < AwayScore = 2, HomeScore == AwayScore = x, and if prediction correct to update the database to reflect the PointsAwarded for each match and the TotalPoints in the user's profile !