Data Encryption Standard

Bài giảng An toàn thông tin: Chương 4 Hệ mật mã khóa đối xứng hiện đại, cung cấp cho người học những kiến thức như: Hệ mật mã hiện đại; Mật mã dòng (Stream Cipher); Mật mã khối (Block Cipher); Hệ mật mã Feistel; Data Encryption Standard (DES); Chuẩn mật mã EAS. Mời các bạn cùng tham khảo!

24p trangxanh0906 12-01-2023 3 1   Download

Lecture "On safety and security of information systems: Symmetric ciphers" provide students with knowledge about: Block cipher principles; Data encryption standard; Feistel cipher;... Please refer to the detailed content of the lecture!

41p hoabingan205 12-12-2022 3 1   Download

Lecture Distributed Systems - Lecture 13: Authentication in Distributed Systems. In this chapter, students will be able to understand: System model, role of cryptography, a simple model of cryptographic system intruder, a classification of cryptographic system, conventional cryptography, modern cryptography, private key cryptography, data encryption standard (DES), public key cryptography, the rivest-shamir-adleman method,…

30p runordie1 10-05-2022 5 1   Download

Lecture Cryptography and network security: Chapter 6 after studying this section will help you understand: To review a short history of DES; To define the basic structure of DES ; To describe the details of building elements of DES; To describe the round keys generation process;...

63p hoathachthao090 10-02-2022 13 1   Download

Bài giảng An toàn hệ thống thông tin: Chương 2a Mã hóa đối xứng cung cấp cho người học những kiến thức như: Mã cổ điển (Classical Encryption); Mã dòng (Stream Ciphers) và Mã khối (Block Ciphers); Mã DES (Data Encryption Standard); Mã hiện đại AES (Advanced Encryption Standard); Các mô hình ứng dụng mã khối. Mời các bạn cùng tham khảo!

34p caphesuadathemchanh 25-10-2021 51 0   Download

The following will be discussed in Cryptography and Network Security Principles and Practices - Part 1: Introduction, classical encryption techniques, block ciphers and the data encryption standard, finite fields, advanced encryption standard, more on symmetric ciphers, confidentiality using symmetric encryption, introduction to number theory, public-key cryptography and RSA, key management - other public-key cryptosystems, message authentication and hash functions, hash and MAC algorithms, digital signatures and authentication protocols,...

576p lovebychance04 20-05-2021 28 1   Download

Giáo trình An toàn và bảo mật thông tin gồm có 5 chương, cung cấp cho người học những kiến thức về: Tổng quan về an toàn và bảo mật thông tin, các phương pháp mã hóa cổ điển, chuẩn mã dữ liệu DES (Data Encryption Standard), mật mã công khai, Các sơ đồ chữ kí số.

110p lovebychance01 25-04-2021 66 12   Download

"Handbook of applied cryptography" present overview of cryptography; mathematical background; number-theoretic reference problems; public-key parameters; pseudorandom bits and sequences; stream ciphers; block ciphers; public-key encryption; hash functions and data integrity; digital signatures; key establishment protocols; key management techniques; efficient implementation; patents and standards; bibliography of papers from selected cryptographic forums....

794p haphuonglan2021 25-04-2021 36 11   Download

This article demonstrates the adaptation of BitTorrent to private collaboration networks in an authenticated, authorized and encrypted manner while retaining the same characteristics of standard BitTorrent.

6p vikentucky2711 26-11-2020 7 1   Download

In this work, one of the methods deploying encryption to cipher data is represented. The primary object of this project is applying Advanced Encryption Standard (AES) in communications based Orthogonal Frequency Division Multiplexing (OFDM). This article discusses the security of the method encrypting directly QAM symbols instead of input bit-stream.

8p tamynhan6 14-09-2020 24 0   Download

This chapter presents the following content: Outline of the course is discussed; topic roadmap & standards organizations; security concepts; X.800 security architecture; security attacks, services, mechanisms; models for network (access) security.

80p koxih_kothogmih3 24-08-2020 19 1   Download

This chapter presents the following content: Models for network (access) security, classical encryption techniques, symmetric cipher model, have considered, classical cipher techniques and terminology, brute force, cryptanalysis of brute force, caesar cipher, cryptanalysis of caesar cipher.

34p koxih_kothogmih3 24-08-2020 24 1   Download

This chapter presents the following content: Data encryption standard (DES) strengths of DES, differential & linear cryptanalysis, block cipher design principles, differential & linear cryptanalysis, block cipher design principles.

52p koxih_kothogmih3 24-08-2020 33 1   Download

This chapter presents the following content: Classical cipher techniques and terminology, monoalphabetic substitution ciphers, cryptanalysis using letter frequencies, playfair cipher, polyalphabetic ciphers, transposition ciphers, product ciphers and rotor machines, stenography.

52p koxih_kothogmih3 24-08-2020 22 0   Download

The objective of this chapter is to illustrate the principles of modern symmetric ciphers. For this purpose, we focus on the most widely used symmetric cipher: the Data Encryption Standard (DES). Although numerous symmetric ciphers have been developed since the introduction of DES, and although it is destined to be replaced by the Advanced Encryption Standard (AES), DES remains the most important such algorithm.

44p koxih_kothogmih3 24-08-2020 24 0   Download

This chapter presents the following content: Data encryption standard (DES), strengths of DES, differential & linear cryptanalysis, block cipher design principles, the AES selection process, the details of Rijndael – the AES cipher, looked at the steps in each round.

43p koxih_kothogmih3 24-08-2020 19 0   Download

The contents of this chapter include all of the following: Digital signatures, ElGamal & Schnorr signature schemes, digital signature algorithm and standard, digital signature model, attacks and forgeries, digital signature requirements, direct digital signatures, ElGamal digital signature.

68p koxih_kothogmih3 24-08-2020 17 1   Download

The contents of this chapter include all of the following: symmetric key distribution using symmetric encryption, symmetric key distribution using public-key encryption, distribution of public keys, digital signatures, ElGamal & Schnorr signature schemes, digital signature algorithm and standard, X.509 authentication and certificates.

66p koxih_kothogmih3 24-08-2020 13 1   Download

Bài giảng "Mật mã học: Mã hóa DES" cung cấp cho người học các kiến thức: Data encryption standard (DES) and alternatives, modern block ciphers, DES block cipher, descryption of DES,... Mời các bạn cùng tham khảo nội dung chi tiết.

31p abcxyz123_10 07-06-2020 30 3   Download

This chapter includes contents: We will explore block ciphers and stream ciphers with some examples, second dimension of the cryptography, what is fesitel structure and why is it used will also be part of today’s lecture, importantly, we will discuss data encryption standard (DES).

32p nanhankhuoctai2 25-05-2020 14 0   Download