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#Diffie hellman calculator with output generator
#Diffie hellman calculator with output mod
#Diffie hellman calculator with output free

P384 - Implemented with Affine-Point math and a few additional types from RustoCrypto library.

p256 - This is the 1 impl in this crate that you could probably use in a production environment as it was lifted (in an as-is from) from a pretty well-tested crate - rust-hpke, which in-turn uses RustCrypto's p256 crate as its base crate.

This crate includes curves that are not yet supported (or fully supported) by the RustCrypto project.

This crate borrows some of its types from RustCrypto's elliptic-curve library so as to build a uniform api and make it easy to integrate rustcrypto-ecc for when it adds support for other curves.

Side-channel attacks have not been considered no attention has been paid to things like constant time equality operations.

#Diffie hellman calculator with output free

It is a no_std lib but its not dynamic-memory allocation free as num_bigint_dig relies on alloc.

My assumption is num_bigint_dig is the cause but cannot confirm. Although, preliminary testing seems to indicate that its (actually) good.

Performance was not a consideration - the arithmetic used in this crate is the textbook version of Affine-Point math and relies on the num_bigint_dig crate.

This crate has NOT been tested (it only includes a few working examples).

It also doesnt have out-of-the-box support for static ECDH for implemented curves. and RustCrypto doesn't support a few curves (p-521 and Brainpool) yet. I'm working on a prototype networking protocol that needs ECDH.

Restricted by the multiprecision library that I have to use, only a few basic operations (+,, -, /, pow, modExp, modMult, mod, gcd, isPrime, genRandomPrime, genRandomBits, and a few more) are available.

#Diffie hellman calculator with output generator

Let's say I found a large prime number p - how can I find a generator g. Imp: This crate does not in anyway aim to replace RustCrypto ECC impls. I'm trying to implement a diffie-hellman key exchange. Running `target \debug \examples \signatures_test.exe `

Alice and Bob now share a secret (the number 2).Use static_dh_ecdh ::signatures ::", ECDSASHA384Signature :: s(signature)) įinished dev target(s) in 0.11s.

#Diffie hellman calculator with output mod

Bob computes s = A b mod p ( s = 8 15 mod 23 = 2).Alice computes s = B a mod p ( s = 19 6 mod 23 = 2).Since parameter generation can be an expensive process this is normally done once in advance and then the same set of parameters are used over many key exchanges. Bob chooses a secret integer b = 15, then sends Alice B = g b mod p ( B = 5 15 mod 23 = 19) The first step with the Diffie-Hellman algorithm is to ensure that both parties are using the same set of parameters (i.e.Alice chooses a secret integer a = 6, then sends Bob A = g a mod p ( A = 5 6 mod 23 = 8).(These two values are chosen in this way to ensure that the resulting shared secret can take on any value from 1 to p–1). Alice and Bob agree to use a prime number p = 23 and base g = 5.Here’s an example of the protocol with secret values in red. Let’s assume that Alice wants to establish a shared secret with Bob. It would be impossible for eavesdropper Eve to determine the common secret color. The result is a final color mixture (brown) identical to the partner’s color mixture. Finally, each of the two mixes together the color they received from the partner with their own private color. The crucial part of the process is that Alice and Bob now mix their secret color with their mutually shared color, resulting in orange and blue mixtures, respectively, then publicly exchange the two mixed colors. Each of them selects a secret color–red and aqua, respectively–that they keep to themselves.

The process begins by having the two parties, Alice and Bob, agree on an arbitrary starting color that does not need to be kept secret (but should be different every time) in this example, the color is yellow. The Diffie-Hellman algorithm is used to establish a shared secret between two parties that can be used for secret communication to exchange data over a public network.