@adorsys-gis/web-auth-prf/dist/src/lib/localDBService.js

A WebAuthn library implementing password-based key derivation functions (PRF) for secure authentication and encryption

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.LocalDBService = void 0;
class LocalDBService {
    async encryptData(plaintext, key) {
        try {
            const encoder = new TextEncoder();
            const data = encoder.encode(plaintext);
            // Generate a unique IV for each encryption.
            const iv = crypto.getRandomValues(new Uint8Array(12));
            const ciphertext = await crypto.subtle.encrypt({ name: "AES-GCM", iv }, key.key, data);
            // Prepend IV to ciphertext.
            const combined = new Uint8Array(iv.length + ciphertext.byteLength);
            combined.set(iv);
            combined.set(new Uint8Array(ciphertext), iv.length);
            return combined.buffer;
        }
        catch (error) {
            throw new Error(`Encryption error: ${error.message}`);
        }
    }
    async decryptData(encrypted, key) {
        try {
            const combined = new Uint8Array(encrypted);
            const iv = combined.slice(0, 12);
            const ciphertext = combined.slice(12);
            const plaintextBuffer = await crypto.subtle.decrypt({ name: "AES-GCM", iv }, key.key, ciphertext);
            const decoder = new TextDecoder();
            return decoder.decode(plaintextBuffer);
        }
        catch (error) {
            throw new Error(`Decryption error: ${error.message}`);
        }
    }
}
exports.LocalDBService = LocalDBService;