How to convert Existing Data into Hash Format(Base64Format)

Question

please help how to convert already existing password data into Base64Format(Hash Format) I Know only how to convert New Entry

Manas Mohapatra · Answer

If you want it in SQLServer level: http://blog.falafel.com/t-sql-easy-base64-encoding-and-decoding/ https://www.mssqltips.com/sqlservertip/4037/storing-passwords-in-a-secure-way-in-a-sql-server-database/ In application level (C#): Encode public static string Base64Encode(string plainText) { var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText); return System.Convert.ToBase64String(plainTextBytes); } Decode public static string Base64Decode(string base64EncodedData) { var base64EncodedBytes = System.Convert.FromBase64String(base64EncodedData); return System.Text.Encoding.UTF8.GetString(base64EncodedBytes); }