@discord-interactions/verify/dist/node.js

A verification module using the Web SubtleCrypto API.

import { createPublicKey, verify } from "node:crypto";
/**
 * Verify an incoming interaction's signature.
 * @param publicKey Your Application's Public Key
 * @param timestamp Interaction Request's "X-Signature-Timestamp" Header
 * @param signature Interaction Request's "X-Signature-Ed25519" Header
 * @param body Raw Interaction Request Body - If you parse this as JSON beforehand, verification will fail for certain interactions.
 * @returns Whether or not the signature is valid.
 */
export default async function verifyInteractionSignature(publicKey, signature, timestamp, body) {
    const message = Buffer.from(timestamp + body, "utf-8");
    const signatureBuffer = Buffer.from(signature, "hex");
    return verify(null, message, createPublicKey({
        key: Buffer.concat([Buffer.from("MCowBQYDK2VwAyEA", "base64"), Buffer.from(publicKey, "hex")]),
        format: "der",
        type: "spki"
    }), signatureBuffer);
}
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