Is a collision possible on the calculation of ephemeral or masking keys, i.e. for two different messages there would be the same ephemeral or masking key?
In the Elgamal encryption scheme, the calculation of ephemeral or masking keys plays a crucial role in ensuring the security of the encryption process. It is essential to understand whether a collision is possible, i.e., whether two different messages can have the same ephemeral or masking key. To answer this question, we need to delve
- Published in Cybersecurity, EITC/IS/ACC Advanced Classical Cryptography, Encryption with Discrete Log Problem, Elgamal Encryption Scheme
Can two different inputs x1, x2 produce the same output y in Data Encryption Standard (DES)?
In the Data Encryption Standard (DES) block cipher cryptosystem, it is theoretically possible for two different inputs, x1 and x2, to produce the same output, y. However, the probability of this occurring is extremely low, making it practically negligible. This property is known as a collision. DES operates on 64-bit blocks of data and uses
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, DES block cipher cryptosystem, Data Encryption Standard (DES) - Key schedule and decryption
What is a collision in the context of hash functions and why is it considered a security vulnerability?
A collision, in the context of hash functions, refers to a situation where two different inputs produce the same output hash value. It is considered a security vulnerability because it can lead to various attacks that compromise the integrity and authenticity of data. In this field of cybersecurity, understanding collisions and their implications is crucial