부산대학교 도서관

Cloud computing and poor security issues have quadrupled over the last six years. The alleged presence of backdoors in common encryption ciphers and a system for addressing this problem, is discussed. In 2007, two Microsoft employees gave a presentation “On the Possibility of a backdoor in the NIST SP800-90 Dual Elliptic Curve Pseudo Random Number Generators” which was linked in 2013 by the New York Times with notes leaked by Edward Snowden. This confirmed backdoors were placed, allegedly, in a number of encryption systems by the National Security Agency. If true, it creates an urgent need for personalising the encryption process by generating locally, an unlimited number of the unbreakable one-time pad ciphers. Hybrid random binary sequences generated from chaotic oscillators initialised by natural noise, were exported to an online Javascript application. The online software uses a von Neumann deskewing algorithm to improve the cryptographic strength of the encryptor and also provides an initial statistical p-test for randomness. Encoding the Lenna image by XORing it with the new cipher provided another quick test to observe if any patterns are in the encoded image, otherwise the cipher is subjected to the NIST suite of statistical tests. All designs were simulated in Orcad PSpice © V16.5 prior to prototype construction.