@lodestar/flare/lib/util/deriveSecretKeys.js

Beacon chain debugging tool

import { deriveEth2ValidatorKeys, deriveKeyFromMnemonic } from "@chainsafe/bls-keygen";
import { SecretKey } from "@chainsafe/blst";
import { interopSecretKey } from "@lodestar/state-transition";
import { YargsError } from "./errors.js";
import { parseRange } from "./format.js";
export const secretKeysOptions = {
    mnemonic: {
        description: "Mnemonic to derive private keys from",
        type: "string",
    },
    indexes: {
        description: "Range of indexes to select, in inclusive range with notation '0..7'",
        type: "string",
    },
    interopIndexes: {
        description: "Range of interop indexes to select, in inclusive range with notation '0..7'",
        type: "string",
    },
};
export function deriveSecretKeys(args) {
    if (args.interopIndexes) {
        const indexes = parseRange(args.interopIndexes);
        return indexes.map((index) => interopSecretKey(index));
    }
    if (args.indexes || args.mnemonic) {
        if (!args.mnemonic)
            throw new YargsError("arg mnemonic is required");
        if (!args.indexes)
            throw new YargsError("arg indexes is required");
        const masterSK = deriveKeyFromMnemonic(args.mnemonic);
        const indexes = parseRange(args.indexes);
        return indexes.map((index) => {
            const { signing } = deriveEth2ValidatorKeys(masterSK, index);
            return SecretKey.fromBytes(signing);
        });
    }
    throw new YargsError("Must set arg interopIndexes or mnemonic");
}
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