Cryptosystems and their Components, Design Objectives and Basis …
WEBA cryptosystem is a pair of algorithms: one for the encryption of data and another for decryption. Often these algorithms use a unique key which should be kept secret, in which case the process for generating and sharing the key is also considered part of the cryptosystem. Modern cryptography is essential to the digital world we live in and has ...
Discrete Logarithms, The ElGamal Cryptosystem and Diffie …
WEBJan 16, 2018 · The cryptosystem takes its name from its founder the Egyptian cryptographer Taher Elgamal who introduced the system in his 1985 paper entitled “ A Public Key Cryptosystem and A Signature Scheme Based on Discrete Logarithms ”. As this title suggests the security of this cryptosystem is based on the notion of discrete logarithms.
The RSA Encryption Algorithm: A Comprehensive Introduction …
WEBJan 1, 2018 · The RSA Cryptosystem is a method of encryption wherein the security of any encrypted message stems from the difficulty in factoring large numbers into their primes. The cryptosystem takes its name from its inventors R ivest, S hamir and A dleman.
Learn Cryptography: From Beginner to Expert - commonlounge.com
WEBFeb 14, 2018 · Learn Cryptography: From Beginner to Expert. February 14, 2018. This course consists of ~25 tutorials to learn cryptography. You can think of this course as a “Free Online Nano Book”. You’ll learn cryptographic algorithms, including those currently in use such as the RSA algorithm (used for secure digital communication) and Digital ...
Enigma: Cryptography, World War and Alan Turing
WEBThe breaking of this cryptosystem was in many ways an inflection point for modern computing and cryptanalysis. The story of Enigma has been told in books and films (most notably The Imitation Game) , many of which highlight the genius of Alan Turing and the team at Bletchley Park in England who are credited with breaking the code.
Caesar Cipher, Shift Ciphers and Substitution Ciphers (and …
WEBJan 4, 2018 · Unlike many modern ciphers, the Caesar cipher does not have a secret key that’s needed to decode the message. Instead, the “secret” in the Caesar cipher is how the cipher works. This violates Kerckhoff’s Principle which states that “A cryptosystem should be secure even if everything about the system, except the key, is public ...
Digital Signatures: ElGamal Signature Scheme and Digital …
WEBJan 17, 2018 · The ElGamal digital signature scheme stems from the ElGamal cryptosystem based upon the security of the one-way function of exponentiation in modular rings and the difficulty of solving the discrete logarithm problem.
What is Cryptography? Why Cryptography? - CommonLounge
WEBFeb 13, 2018 · Design Principle for Cryptography: Kerckhoff’s Principle Kerckhoff’s Principle is an important rule in cryptography by Auguste Kerckhoff. It states ” A cryptosystem should be secure even if everything about the system, except the key, is public knowledge.
Learn Cryptography in 2 weeks | CommonLounge Archive
WEBDiscrete Logarithms, The ElGamal Cryptosystem and Diffie-Hellman Key Exchange; Public Key Infrastructure; Random Number Generation, Digital Signatures and Password Salting. In this section, we’ll look at some other applications of cryptography such as random number generation and digital signatures.
Public Key Infrastructure | CommonLounge Archive
WEBBob may then continue under the normal encryption protocol for the cryptosystem in place (following ElGamal or RSA encryption for example). The certificate authority has its own public keys that are used in the generation and verification of the digital certificates it issues.