DKIM Signature Verification with Typescript

 !npm version 

A dkim signature implementation with imap example and circom circuit.

Use at your own risk.

Install

``
$ npm i dkim-verifier
`

Usage

`ts
import { readFileSync } from "fs";
import {
parseEmailToCanonicalized,
verifyBody,
verifyDkimSignature,
getDkimPublicKey,
} from "dkim-verifier";

const emailRaw = fs.readFileSync("tests/example.eml", "utf8");
const { canonicalizedHeaders, canonicalizedBody, dkim } =
parseEmailToCanonicalized(emailRaw);
const isBodyVerified = verifyBody(canonicalizedBody, dkim);
const publicKey = await getDkimPublicKey(dkim);
const isDkimVerified = verifyDkimSignature(
dkim,
canonicalizedHeaders,
publicKey,
);

expect(isBodyVerified).toBe(true);
expect(isDkimVerified).toBe(true);
`

Test

`shell
$ yarn test
`

Example

Please set your gmail account info.

`shell
$ cp .env.example .env
$ ts-node example/imap.ts
``