Crate ibe

Identity Based Encryption schemes on the BLS12-381 pairing-friendly elliptic curve.

Implements the following schemes:

• Waters
• Waters-Naccache
• Kiltz-Vahlis IBE1

How to use

The following example is similar for all the schemes. Check the corresponding tests for concrete examples per scheme.

use ibe::kiltz_vahlis_one::*;

const ID: &'static str = "email:w.geraedts@sarif.nl";
let mut rng = rand::thread_rng();

// Hash the identity to a set of scalars.
let kid = Identity::derive(ID.as_bytes());

// Generate a public-private-keypair for a trusted third party.
let (pk, sk) = setup(&mut rng);

// Extract a private key for an identity / user.
let usk = extract_usk(&pk, &sk, &kid, &mut rng);

// Generate a random message and encrypt it with the public key and an identity.
let (c, k) = encrypt(&pk, &kid, &mut rng);

// Decrypt the ciphertext of that message with the private key of the user.
let k2 = decrypt(&usk, &c);

assert_eq!(k, k2);

Modules

kiltz_vahlis_one	Identity Based Encryption Kiltz-Vahlis IBE1 scheme on the BLS12-381 pairing-friendly elliptic curve.
waters	Identity Based Encryption Waters scheme on the BLS12-381 pairing-friendly elliptic curve.
waters_naccache	Identity Based Encryption Waters-Naccache scheme on the BLS12-381 pairing-friendly elliptic curve.