Mar 18, 2024 · A safe prime is used as the modulus for modular arithmetic in the Diffie-Hellman Key Exchange. It is a prime number of the form 2·p+1 , where p is also a prime. Safe primes …

Mostly. The two problems are actually more closely equivalent in a gap model than in a non-gap model. Square-DH clearly reduces to CDH either way, but CDH reduces to two calls to Square …

Apr 6, 2022 · A 1024-bit finite-field Diffie-Hellman group provides 80-bit security, and that is generally considered inadequate for all but the most constrained devices when online. Even if …

Nov 7, 2021 · In practice, Diffie–Hellman is not used in this way, with RSA being the dominant public key algorithm. This is largely for historical and commercial reasons, namely that RSA …

May 8, 2021 · A, and as A w.r.t. B. The problem is solved by Authenticated Diffie-Hellman key exchange, but that requires prior exchange of trusted (possibly public) information, as …

Apr 13, 2017 · Now, when it comes to Diffie-Hellman, generator is used in two slightly different meanings (and that may be what is confusing you). In the first meaning, a "generator" is …

Aug 28, 2020 · In order for Diffie-Hellman to be extra secure we must use a safe prime which is (p – 1) / 2 will also be a prime. We don't have to; there are other options which achieve the same …

Feb 17, 2016 · Alice and Bob want to use Diffie-Hellman for key agreement and choose p ...

However, I would also add that, for Diffie-Hellman, you don't need a primitive element of the group. Instead, you want an element that generates a large prime order; my answer in For …

In the original description, the Diffie–Hellman exchange by itself does not provide authentication of the communicating parties and is thus vulnerable to a man-in-the-middle attack. Mallory may …