import type { Key } from "./common";
import type { Platform } from "../../platform/web/Platform.js";
import type { Storage } from "../storage/idb/Storage";
import type { AccountDataEntry } from "../storage/idb/stores/AccountDataStore";
type EncryptedData = {
    iv: string;
    ciphertext: string;
    mac: string;
};
export declare enum DecryptionFailure {
    NotEncryptedWithKey = 0,
    BadMAC = 1,
    UnsupportedAlgorithm = 2
}
export declare class SecretStorage {
    private readonly _key;
    private readonly _platform;
    private readonly _storage;
    constructor({ key, platform, storage }: {
        key: Key;
        platform: Platform;
        storage: Storage;
    });
    /** this method will auto-commit any indexeddb transaction because of its use of the webcrypto api */
    hasValidKeyForAnyAccountData(): Promise<boolean>;
    /** this method will auto-commit any indexeddb transaction because of its use of the webcrypto api */
    readSecret(name: string): Promise<string | undefined>;
    _decryptAccountData(accountData: AccountDataEntry): Promise<string>;
    _decryptAESSecret(type: string, encryptedData: EncryptedData): Promise<string>;
}
export {};