o1js-email-verify/build/src/main.js

Implemented using [o1js](https://github.com/o1-labs/o1js), this project is a reimplementation of [zk-email](https://github.com/zkemail/zk-email-verify), leveraging the Mina proving system [Kimchi](https://o1-labs.github.io/proof-systems/specs/kimchi.html#

/**
 * This script is a utility for testing email verification on an EML file.
 * You can quickly run this script to verify the integrity and authenticity of the email's DKIM signature.
 *
 * Usage:
 * 1. Place the desired EML file in the `eml` directory or any other directory of your choice.
 * 2. Update the `filePath` variable to point to your new EML file.
 * 3. Execute the script by running the `npm run main` command.
 *
 * Note:
 * - If no output is produced, it means the verification was successful.
 * - If an error is thrown, it indicates a problem with the verification process.
 *
 * This script is primarily for debugging purposes and experimenting with different EML files using the emailVerify provable function.
 *
 * Additionally, this script has highlighted some limitations and bugs in helper functions,
 * such as support issues for certain email providers like Hotmail and ProtonMail.
 */
import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
import { generateInputs } from './generate-inputs.js';
import { emailVerify } from './email-verify.js';
const __dirname = path.dirname(fileURLToPath(import.meta.url));
// Update this variable to point to your desired EML file
const filePath = path.join(__dirname, '../../eml/email-good-large.eml');
const rawEmail = fs.readFileSync(filePath, 'utf8');
/**
 * Reads an EML file input and verifies the email signature.
 *
 * @param rawEmail - The raw content of the EML file.
 */
async function verifyEmail(rawEmail) {
    // Off-chain: generate circuit inputs
    const inputs = await generateInputs(rawEmail);
    // Call the provable emailVerify function with parsed inputs
    emailVerify(inputs.paddedHeader, inputs.headerHashIndex, inputs.signature, inputs.publicKey, inputs.modulusLength, false, inputs.paddedBodyRemainingBytes, inputs.precomputedHash, inputs.bodyHashIndex, inputs.headerBodyHashIndex);
}
// Execute the verification process
verifyEmail(rawEmail);
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