Signature verification

Utility for the verification of ED25519 message signatures generated by Albedo signer app.

Installation

npm i -S @albedo-link/signature-verification

Usage

import {verifyMessageSignature} from '@albedo-link/signature-verification'

const isValid = verifyMessageSignature(
    'GDWPMRQSLXNEHCXC7RTISZAHULB7FDDIOPR6CF5B5IUWOQXN2CUWN4LO',
    'DGmk7s8gkhXMqRNsiCBanwL76Kt+5+WUzAOlWoh0nDs=',
    '049a26b40c1a30be1cef3ef7a64af8ae305e7567ee2cac57e5a494e0036860b81dc417c005e4f4dff6ad6bc52f56f0e61e9d084c2718638bc4f78130fc14d20e'
)

Parameters

• publicKey (string) - Ed25519 public key in StrKey encoding (e.g. "GDWP...N4LO").
• message (string) - Arbitrary text message signed by the given public key.
• signature (string|Buffer|Uint8Array) - Hex-encoded message signature.

Returns

(boolean) - Returns true if a signature is valid and false otherwise.

Direct usage without bundler

The library can be also used directly in the browser without a package bundler:

<script src="https://unpkg.com/@albedo-link/signature-verification/lib/albedo.signature.verification.js"></script>

albedoSignatureVerification.verifyMessageSignature(
    'GDWPMRQSLXNEHCXC7RTISZAHULB7FDDIOPR6CF5B5IUWOQXN2CUWN4LO',
    'DGmk7s8gkhXMqRNsiCBanwL76Kt+5+WUzAOlWoh0nDs=',
    '049a26b40c1a30be1cef3ef7a64af8ae305e7567ee2cac57e5a494e0036860b81dc417c005e4f4dff6ad6bc52f56f0e61e9d084c2718638bc4f78130fc14d20e'
)

Development

To create UMD library bundle, run the following NPM script:

npm run build

Running tests:

npm run test