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Encryption scheme

Xem 1-20 trên 21 kết quả Encryption scheme
  • This paper discusses the survey on the encryption techniques with the permutation and also briefly discusses the encryption for image and studies carried on the only image encryption (OIE) schemes. The paper provides the future study requirement for the secure image transmission.

    pdf5p hongnhan878 12-04-2019 7 0   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Transmission Error and Compression Robustness of 2D Chaotic Map Image Encryption Schemes

    pdf16p sting10 24-02-2012 40 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Speed-Adaptive Media Encryption Scheme for Real-Time Recording and Playback System

    pdf9p dauphong14 13-02-2012 32 2   Download

  • Lattices have been studied by cryptographers for quite some time, in both the field of cryptanalysis and as a source of hard problems on which to build encryption schemes. In this lecture, we describe the NTRU encryption algorithm, and the lattice problems on which this is based.

    pdf31p dunglh2013 02-04-2014 44 0   Download

  • This paper provides a new insight on system performance comparison with Amplify and Forward relaying protocol, STBC and Spatial multiplexing schemes, four channel equalization techniques (ZF, MMSE, ZF-SIC and MMSE-SIC) and four digital modulation schemes (BPSK, QPSK, 16PSK and 64PSK).

    pdf7p girlsseek 27-02-2019 5 0   Download

  • In this paper, we investigate the management of confidentiality in terms of security notions of McEliece cryptosystem, the first encryption scheme using linear codes, proposed on the basis of the hard problems in coding theory and its variants in the provably secure approach. The original McEliece is only a one way function. Therefore to obtain the higher notions of security, modifications on the original scheme are proposed.

    pdf8p byphasse043256 21-03-2019 6 0   Download

  • In this paper we have designed a new image encryption algorithm, which includes a novel chaotic map and coding scheme. In the suggested approach, the coding algorithm is based on Gray code. Each pixel in the encrypted image is generated by applying XOR operation to two items: the first item is the coded form of the corresponded pixel in the original image. The second one is a pixel in the original image which is selected by the chaotic map.

    pdf6p blossom162 31-03-2019 3 0   Download

  • In this scheme the format of plaintext and ciphertext are same. The three main Format Preserving Encryption modes such as FF1, FF2 and FF3 approved by National Institute of Science and Technology(NIST) are analysed and highlights the differences in performance.

    pdf4p hongnhan878 12-04-2019 4 0   Download

  • In this encryption technique, Users’ private keys and cipher texts are associated with a set of attributes. This technique completely encrypts the file and does not have any control over the individual attributes in the file. So, in order to overcome this problem a concept called attribute with weight was introduced, so that it can have control over the individual elements in the file and can be able to hide sensitive information while sharing data with the users

    pdf5p hongnhan878 12-04-2019 5 0   Download

  • This material is copyright and is licensed for the sole use by Thomas Rosenblum on 4th December 2008 1010 SW High Ave., , Topeka, , 66604 Chapter 9 Fast-forward to public key encryption, which is an encryption scheme that allows both parties to share a "public" key and retain their own "private" keys. This allows them to exchange a secure message without any worry of sending the decoding key. The "public" key is shared in the open, allowing you to use it openly, enabling you to have a "private" conversation in a "public" venue. Mozilla (now Netscape) created the specification and pushed...

    pdf10p yukogaru9 28-10-2010 61 9   Download

  • We take a critical look at the relationship between the security of cryptographic schemes in the Random Oracle Model, and the security of the schemes that result from implementing the random oracle by so called \cryptographic hash functions". The main result of this paper is a negative one: There exist signature and encryption schemes that are secure in the Random Oracle Model, but for which any implementation of the random oracle results in insecure schemes.

    pdf37p tai_lieu2014 11-04-2014 32 4   Download

  • In the last lecture we looked at some high-level descriptions of key distribution and agreement schemes. These protocols cannot be used as they were stated. In implementation of the actual protocol, there are many situations one should be careful of. In this lecture, we will look at some common protocol failures that arise when trying to implement security protocols We will then look at some specific examples of security protocols

    ppt30p muathu_102 28-01-2013 21 2   Download

  • There are many contents in this document: abstract, random oracle paradigm, notations, encryption, polynomial security, chosen ciphertext security, non-malleability, results, signatures, instantiation tips, wrap-up.

    pdf17p tai_lieu2014 11-04-2014 19 0   Download

  • Database outsourcing is emerging today as a successful paradigm allowing data owners to ship their data to the external service provider for the distribution of resources. An important problem to be addressed in this paradigm concerns the protection of outsourced data from unauthorized access even from the service provider’s server, which is not fully trusted. Several encryption schemes and access control mechanisms have been suggested to protect the outsourced data from unauthorized disclosure.

    pdf7p dannisa 14-12-2018 3 0   Download

  • In this paper we propose a new method to manage secure group using binomial key tree approach. We show that number of encryptions performed and rekey messages constructed during membership change are less compared to the scheme proposed by Wong and others. In our scheme, it is not required to balance the tree after membership change.

    pdf10p hongnhan878 12-04-2019 4 0   Download

  • The security of many cryptographic systems depends upon the generation of unpredictable quantities. Examples include the keystream in the one-time pad (x1.5.4), the secret key in the DES encryption algorithm (x7.4.2), the primes p; q in the RSA encryption (x8.2) and digital signature (x11.3.1) schemes, the private key a in the DSA (x11.5.1), and the challenges used in challenge-response identification systems (x10.3).

    pdf23p vankent 12-07-2010 63 7   Download

  • Many public-key encryption and digital signature schemes, and some hash functions (see x9.4.3), require computations in Zm, the integers modulo m (m is a large positive integer whichmay or may not be a prime). For example, the RSA, Rabin, and ElGamal schemes require efficient methods for performingmultiplication and exponentiation in Zm.

    pdf45p vankent 12-07-2010 29 6   Download

  • This thesis investigates the protection landscape surrounding online banking. First, electronic banking is analysed for vulnerabilities and a survey of current attacks is carried out. This is represented graphically as an attack tree describing the different ways in which online transactions can be attacked. The discussion then moves on to various defences which have been developed, categorizing them and analyzing how successful they are at protecting against the attacks given in the first chapter.

    pdf113p bin_pham 05-02-2013 29 6   Download

  • E-commerce Security Issues CHAPTER 13 295 your encrypted messages. As shown in Figure 13.4, both the sender (who encrypts the message) and the recipient (who decrypts the message) have the same key. The most widely used secret key algorithm is the Data Encryption Standard (DES). This scheme was developed by IBM in the 1970s and adopted as the American standard for commercial and unclassified government communications. Computing speeds are orders of magnitudes faster now than in 1970, and DES has been obsolete since at least 1998.

    pdf10p yukogaru14 30-11-2010 41 4   Download

  • Privacy Enhanced Mail (PEM) was the first serious effort to secure Internet mail. The Internet Resources Task Force (IRTF) Privacy and Security Research Group (PSRG) did the initial design. The Internet Engineering Task Force (IETF) PEM Working Group continued development for three years, resulting in a four- part Proposed Internet Standard published in early 1993 [64] [56] [5] [55]. PEM is a broad standard suite, it provides encryption, authentication, message integrity and key management. PEM supports both symmetric and asymmetric (public- key) key management schemes.

    pdf109p cao_can 02-01-2013 35 3   Download

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