The Digest class
The security.Digest class implements digest algorithms to process
    data.
The class implements several methods that allow you to add data piece by piece and process these data with a specified digest algorithm.
Steps to process data with a digest algorithm:
 - Define the digest algorithm with the 
security.Digest.CreateDigestmethod. - Add data to the digest buffer with methods such as 
security.Digest.AddData,security.Digest.AddBase64Data,security.Digest.AddHexBinaryData,security.Digest.AddStringData. - When all data pieces are added, the buffer can be processed by calling
                              methods like 
security.Digest.DoBase64Digestorsecurity.Digest.DoHexBinaryDigest. 
security.Digest.CreateDigestString
                  method.