منابع مشابه
Mathematical Background of Public Key Cryptography
Cryptography is, in the true sense of the word, a classic discipline: we find it in Mesopotamia and Caesar used it. Typically, the historical examples involve secret services and military. Information is exchanged amongst a limited community in which each member is to be trusted. Like Caesar’s chiffre these systems were entirely symmetric. Thus, the communicating parties needed to have a common...
متن کاملThe Mathematical Cryptography of the RSA Cryptosystem
Invented in 1977 by Rivest, Shamir and Adleman, the RSA cryptosystem has played a very important role in the development of modern cryptography. Its various applications in industry, Internet, banking, online shopping, cell phones, smart cards, secure information transfers and electronic signatures have made RSA a standard at the heart of modern technologies. This chapter explores the mathemati...
متن کاملMinimizing the supplying cost of leverage items: a mathematical approach
In the new competitive environment, selecting and planning of the supply chain is very crucial and involves evaluation of many factors. Different approaches have been applied to assess the supplier/s. Most of these studies are based upon the supplier/s' capabilities. It may be neither rational nor economical to deal with each item via a generic material control system. Furthermore, supplier...
متن کاملHybrid Approach : a Tool for Multivariate Cryptography
In this paper, we present an algorithmic tool to cryptanalysis multivariate cryptosystems. The presented algorithm is a hybrid approach that mixes exhaustive search with classical Gröbner bases computation to solve multivariate polynomial systems over a finite field. Depending on the size of the field, our method is an improvement on existing techniques. For usual parameters of multivariate sch...
متن کاملA New Approach for Visual Cryptography
Visual cryptography is to encrypt a secret image into some shares (transparencies) such that any qualified subset of the shares can recover the secret “visually.” The conventional definition requires that the revealed secret images are always darker than the backgrounds. We observed that this is not necessary, in particular, for the textual images. In this paper, we proposed an improved definit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Indian Journal of Science and Technology
سال: 2013
ISSN: 0974-6846,0974-5645
DOI: 10.17485/ijst/2013/v6i12.12