In the article the expediency of quality assessment and certification of electronic educational resources of the higher education institution is justified. The order and scheme of internal certification of electronic educational resources are formed as a result of research. Certification includes the softwaretechnical and complex expertises. Also this article includes a system of criterias for ...

Digital signatures are only enjoying a gradual and reluctant acceptance, despite the long existence of the relevant legal and technical frameworks. One of the major drawbacks of client-generated digital signatures is the requirement for effective and secure management of the signing keys and the complexity of the cryptographic operations that must be performed by the signer. Outsourcing digital...

The subliminal channel is one of the methods for hiding a message in other messages. Simmons has shown conjectures on the upper bound to the bandwidth of a subliminal channel. This paper proposes a new broad-band subliminal channel embedded in the ESIGN. The bandwidth of the proposed subliminal channel is wider than that of the previous one, and it exceeds the upper bound that Simmons has conje...

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