export type AesStrength = 128 | 192 | 256;
export interface AesKeys {
    encKey: Uint8Array;
    authKey: Uint8Array;
    pwv: Uint8Array;
}
export declare function getAesSaltLength(strength: AesStrength): number;
export declare function getAesStrengthCode(strength: AesStrength): 1 | 2 | 3;
export declare function strengthFromCode(code: number): AesStrength | undefined;
export declare function deriveAesKeys(password: string, salt: Uint8Array, strength: AesStrength): AesKeys;
export declare function generateSalt(strength: AesStrength): Uint8Array;
export declare function passwordVerifierMatches(derived: Uint8Array, stored: Uint8Array): boolean;
export declare function createAesEncryptionTransform(encKey: Uint8Array, authKey: Uint8Array, result: {
    authCode?: Uint8Array;
}): TransformStream<Uint8Array, Uint8Array>;
export declare function createAesDecryptionTransform(encKey: Uint8Array, authKey: Uint8Array, expectedAuthCode: Uint8Array, entryName?: string): TransformStream<Uint8Array, Uint8Array>;
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