zk-email-light/input.js

ZkEmail only for Header

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.SHA_PADDED_MESSAGE_LENGTH = exports.bigintToCircomInputs = void 0;
// circom rsa field expression
// 121 bits * 17 = 2057 bits operation
const RSA_FIELD_BITS = 121;
const RSA_FIELD_LENGTH = 17;
const BIGINT_121_MAX = 2n ** BigInt(RSA_FIELD_BITS) - 1n;
const bigintToCircomInputs = (n) => {
    return Array.from({ length: Number(RSA_FIELD_LENGTH) }, (_, i) => {
        const remainder = n >> BigInt(i * RSA_FIELD_BITS);
        return remainder & BIGINT_121_MAX;
    });
};
exports.bigintToCircomInputs = bigintToCircomInputs;
exports.SHA_PADDED_MESSAGE_LENGTH = 640;
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