Abstract
One of the main components of public key infrastructure (PKI) is the center of certification. The function which it can fulfill, depends on the specific protocol. In the article the center of certification is the trustworthy third part, which includes the center of authorization (CA) and time stamping authority (TSA).The center of certification is the realization of certification subprotocol, the element of main electronic auction protocol [1]. In the article, we present the implementation and efficiency characteristics of the center of certification which is based on the free licence (GNU licence) library openSSL [2] and the patch to it openTSA [3].
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