https://github.com/alexyer/xxxdh-js

WASM wrapper around xxxdh library implementing Extended Triple Diffie-Hellman key exchange.
https://github.com/alexyer/xxxdh-js

cryptography diffie-hellman key-exchange-protocol

Last synced: 5 months ago
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WASM wrapper around xxxdh library implementing Extended Triple Diffie-Hellman key exchange.

• Host: GitHub
• URL: https://github.com/alexyer/xxxdh-js
• Owner: alexyer
• License: mit
• Created: 2022-01-14T12:49:53.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2022-01-14T14:29:55.000Z (over 4 years ago)
• Last Synced: 2025-09-20T05:52:15.417Z (9 months ago)
• Topics: cryptography, diffie-hellman, key-exchange-protocol
• Language: Rust
• Homepage:
• Size: 8.79 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# XXXDH_JS

WASM wrapper around xxxdh library implementing Extended Triple Diffie-Hellman key exchange.

## Usage

```javascript

import * as xxxdh from "xxxdh-js";

let alice_identity = new xxxdh.X25519RistrettoKeyPair();

let alice_prekey = new xxxdh.X25519RistrettoKeyPair();

let alice_signature = alice_identity.sign(alice_prekey.public);

let alice_protocol = new xxxdh.ProtocolX25519RistrettoInMemSha256Aes256Gm(alice_identity.to_vec(), alice_prekey.to_vec(), alice_signature);

let onetime_keypair = new xxxdh.X25519RistrettoKeyPair();

let bob_identity = new xxxdh.X25519RistrettoKeyPair();

let bob_prekey = new xxxdh.X25519RistrettoKeyPair();

let bob_signature = bob_identity.sign(bob_prekey.public);

let bob_protocol = new xxxdh.ProtocolX25519RistrettoInMemSha256Aes256Gm(bob_identity.to_vec(), bob_prekey.to_vec(), bob_signature, [onetime_keypair.to_vec()]);

let alice_msg = alice_protocol.prepare_init_msg(bob_identity.public, bob_prekey.public, bob_signature, onetime_keypair.public);

let alice_init_msg = alice_msg.init_msg;

let alice_sk = alice_msg.shared_secret;

let bob_sk = bob_protocol.derive_shared_secret(

    alice_init_msg.sender_identity,

    alice_init_msg.sender_ephemerial_key,

    alice_init_msg.receiver_onetime_key,

    alice_init_msg.nonce, alice_init_msg.cyphertext

);

console.log("Alice:", alice_sk);

console.log("Bob:", bob_sk);

```