Workflow document management - Version 2.0 In this article we will talk about such an important element of document workflow management in modern information systems (like DocumentLite) as digital signature. The question on the digital signature always arises when it is necessary to confirm authorship of electronic document. Especially this problem is important in intercorporate document workflow management exchanges, electronic auctions, etc. However if the problem of maintenance of confidentiality in workflow document management is almost solved for today the problem of acknowledgement of authorship and integrity of the document while remains to be not solved. As the possible decision of the problem of the technology of acknowledgement of authorship and integrity in workflow document management which is based on DS - as a matter of fact, unique code for each author to the message also acts.The technology of DS in workflow document management is based on steam «a closed key - an open key». The