No abstract

Printed documents are still relevant in our daily life and information in it must be protected from threats and attacks such as forgery, falsification or unauthorized modification. Such threats make the document lose its integrity and authenticity. There are several techniques that have been proposed and used to ensure authenticity and originality of printed documents. But some of the techniques are not suitable for public use due to its complexity, hard to obtain special materials to secure the document and expensive. This paper discuss several techniques for printed document security such as watermarking and barcode as well as the usability of two dimensional barcode in document authentication and data compression with the barcode. A conceptual solution that are simple and efficient to secure the integrity and document sender’s authenticity is proposed that uses two dimensional barcode to carry integrity and authenticity information in the document. The information stored in the barcode contains digital signature that provides sender’s authenticity and hash value that can ensure the integrity of the printed document.

No abstract

No abstract

Information is a fundamental part of the world today and with it has come the need for information security during communication over public channels so as to safeguard communication. There are various public key algorithms being implemented today, the most popular being RSA and ECC. Given the trend towards quantum computing systems, there is need to provide assurance of information security in the postquantum period. Due to the susceptibility of ECC and RSA to quantum algorithm attacks, NTRU is the leading alternative. This paper provides a clear description of the operation of the NTRU public key cryptosystem, the constraints for the selection of its parameters, its security followed by a practical illustration of its operation. This paper also highlights the strengths and weaknesses of NTRU followed by a comparative study of the performance of NTRU, RSA and ECC. Finally, we give a conclusion of potential areas for further research so as to provide assurance of security pertaining to NTRU.