[Users] re Column Encryption

[Toby Thain]

> - MD5 checksum to ensure authenticity of payment transactions. The  
> md5 encryption routine written in C.  Single call to encrypt a  
> piece of text. eg
>
> Lv_Encrypted = md5sig( Lv_PlainText);
>

That terminology may be confusing, since MD5 is a one-way hash -  
would 'hash', 'digest' or 'signature' be better?

--Toby