ИСТИНА

The report describes some features of the security infrastructure for distributed computing systems. Most distributed computing systems, e.g. GRID, use the PKI security infrastructure. One of the main problem in such systems is the necessity to use time-limited proxy certificates for delegation of rights from user to an execution remote service which acts on behalf of the user. The problem is the contradiction between limited life time of the proxy certificates and unpredictable time of the request processing. Our approach allows to avoid using the proxy certificates. This makes the security infrastructure of distributed computing systems simpler for development, support and using. In particular, the MyProxy service becomes unnecessary at all.