export declare function generateNonce(size: number): Uint8Array;
export declare function constantTimeEqual(a: Uint8Array, b: Uint8Array): boolean;
export declare function zeroize(buffer: Uint8Array): void;
export declare function randomBytes(size: number): Uint8Array;
export declare function deriveKeyScrypt(password: string, salt: Uint8Array, keyLength?: number): Promise<Uint8Array>;
export declare function deriveKeyArgon2id(password: string, salt: Uint8Array, options?: {
    iterations?: number;
    memory?: number;
}): Promise<Uint8Array>;
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