@bryopsida/key-store/lib/fileKeyStore.js

A extendable TypeScript Node.JS library that provides a basic key store for data encryption keys

import { writeFile, mkdir, access, readFile, unlink, rm } from 'fs/promises';
import { resolveHome } from './resolve.js';
import { BaseKeyStore, } from './baseKeyStore';
export class FileKeyStore extends BaseKeyStore {
    keyStorePath;
    constructor(keyStorePath, keyStorePasswordProvider, keyStoreSaltProvider, keyStoreContextProvider) {
        super(keyStorePasswordProvider, keyStoreSaltProvider, keyStoreContextProvider);
        this.keyStorePath = resolveHome(keyStorePath);
    }
    hasKeyInSlot(keySlot) {
        return access(this.keyStorePath + '/' + keySlot)
            .then(() => true)
            .catch(() => false);
    }
    async createKeyStoreDirIfNotExists() {
        await access(this.keyStorePath).catch(async () => {
            await mkdir(this.keyStorePath, { recursive: true });
        });
    }
    async putKeyInSlot(keySlot, key) {
        await this.createKeyStoreDirIfNotExists();
        await writeFile(this.keyStorePath + '/' + keySlot, key);
    }
    async getKeyInSlot(keySlot) {
        return readFile(this.keyStorePath + '/' + keySlot);
    }
    async deleteKeySlot(keySlot) {
        await unlink(this.keyStorePath + '/' + keySlot);
    }
    async clearKeySlots() {
        await rm(this.keyStorePath, { recursive: true, force: true, maxRetries: 3 });
    }
    async close() {
    }
}
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