ed25519-to-x25519.wasm

Library for converting Ed25519 signing key pair into X25519/Curve25519 key pair suitable for Diffie-Hellman key exchange.

Based on libsodium, compiles subset of libsodium to WebAssembly and provides 2 wrapper functions for public/private keys conversion.

How to install

npm install ed25519-to-x25519.wasm

How to use

Node.js:

var ed25519_to_x25519 = require('ed25519-to-x25519.wasm')

ed25519_to_x25519.ready(function () {
    // Do stuff
});

Browser:

requirejs(['ed25519-to-x25519.wasm'], function (ed25519_to_x25519) {
    ed25519_to_x25519.ready(function () {
        // Do stuff
    });
})

API

ed25519_to_x25519.ready(callback)

• callback - Callback function that is called when WebAssembly is loaded and library is ready for use

ed25519_to_x25519.convert_public_key(ed25519_public_key : Uint8Array) : Uint8Array

Converts Ed25519 public key into X25519/Curve25519 public key. Returns null if conversion fails.

ed25519_to_x25519.convert_private_key(ed25519_private_key : Uint8Array) : Uint8Array

Converts Ed25519 private key into X25519/Curve25519 private key.

Take a look at src/index.ls for JsDoc sections with arguments and return types as well as methods description, look at tests/index.ls for usage examples.

Contribution

Feel free to create issues and send pull requests (for big changes create an issue first and link it from the PR), they are highly appreciated!

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License

Free Public License 1.0.0 / Zero Clause BSD License

https://opensource.org/licenses/FPL-1.0.0

https://tldrlegal.com/license/bsd-0-clause-license