Problems of technical implementation of the government-procurements legal relations in context of electronic document flow are considered. The review of Public Key Infrastructure (PKI), in particular technology of the electronic digital signature, is given. Information protection in PKI is based on a method of asymmetrical cryptography with usage of pair keys — public and private. The law of the Russian Federation on the electronic digital signature and its conformity to the PKI international standards are considered. The ways to use PKI providing adequate technical implementation of legal relations in electronic government procurement system are offered.

digital signature, asymmetrical cryptography, key certificate, certificate authority.

Programming, parallel computing, multimedia