export declare const LEGACY_SALT: Uint8Array<ArrayBuffer>;
export declare const LEGACY_EXPORT_SALT: Uint8Array<ArrayBuffer>;
export declare const PBKDF2_ITERATIONS = 600000;
export declare const LEGACY_PBKDF2_ITERATIONS = 100000;
export declare function deriveFileKey(machineId: string, username: string, salt: Uint8Array, iterations?: number): Promise<CryptoKey>;
export declare function derivePassphraseKey(passphrase: string, salt: Uint8Array, iterations?: number): Promise<CryptoKey>;
export declare function encryptData(key: CryptoKey, plaintext: string): Promise<Buffer>;
export declare function decryptData(key: CryptoKey, data: Buffer): Promise<string>;
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