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| import { AES } from "https://deno.land/x/god_crypto/aes.ts"; | |
| import { encode, decode } from "https://deno.land/std@0.97.0/encoding/hex.ts"; | |
| class SecretStore { | |
| #aes: AES; | |
| constructor(data: { key: string; iv?: string }) { | |
| this.#aes = new AES(data.key, { | |
| mode: "cbc", | |
| iv: data.iv ?? "random 16byte iv", | |
| }); | |
| } | |
| async setItem(name: string, value: string): Promise<void> { | |
| const encryptedBytes = await this.#aes.encrypt( | |
| encode(new TextEncoder().encode(value)) | |
| ); | |
| const hash = encode(encryptedBytes); | |
| console.log(encryptedBytes.hex()); | |
| localStorage.setItem(name, new TextDecoder().decode(hash)); | |
| } | |
| async getItem(name: string): Promise<null | string> { | |
| const encrypted = localStorage.getItem(name); | |
| if (encrypted === null) return null; | |
| const decrypted = await this.#aes.decrypt( | |
| decode(new TextEncoder().encode(encrypted)) | |
| ); | |
| return new TextDecoder().decode( | |
| decode(decode(new TextEncoder().encode(decrypted.hex()))) | |
| ); | |
| } | |
| } | |
| const store = new SecretStore({ key: "thegrassisgreen_" }); | |
| await store.setItem("password", "foo"); | |
| console.log(localStorage.getItem("password")); | |
| console.log(await store.getItem("password")); |
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