import type { PasswordHash, PasswordSalt, PasswordOpsLimitChoice, PasswordOpsLimit, PasswordMemLimitChoice, PasswordMemLimit } from '../types.js';
/**
 * Use the `min` limit during testing to improve performance.
 */
declare const passwordOpsLimits: Record<PasswordOpsLimitChoice, PasswordOpsLimit>;
/**
 * Use the `min` limit during testing to improve performance.
 */
declare const passwordMemLimits: Record<PasswordMemLimitChoice, PasswordMemLimit>;
/**
 * These are the default computational parameters for password hashing.
 * They can be changed to increase or decrease the computational cost.
 * This ensures that deriving a key from a password uses
 * 256 MiB of RAM and 0.7 seconds on a 2.8 GHz Intel Core i7.
 * These need to be consistent to ensure the same hash is produced.
 */
declare const passwordOpsLimitDefault: PasswordOpsLimit;
declare const passwordMemLimitDefault: PasswordMemLimit;
declare function isPasswordOpsLimit(opsLimit: number): opsLimit is PasswordOpsLimit;
declare function isPasswordMemLimit(memLimit: number): memLimit is PasswordMemLimit;
/**
 * Hashes the password and returns a 256-bit hash and 128-bit salt.
 * The 256-bit hash can be used as a key for symmetric encryption/decryption.
 * Pass the salt in case you are trying to get the same hash.
 * The returned buffers are guaranteed to unpooled.
 * This means the underlying `ArrayBuffer` is safely transferrable.
 */
declare function hashPassword(password: string, salt?: PasswordSalt, opsLimit?: PasswordOpsLimit, memLimit?: PasswordMemLimit): [PasswordHash, PasswordSalt];
/**
 * Checks the password.
 * The returned buffers are guaranteed to unpooled.
 * This means the underlying `ArrayBuffer` is safely transferrable.
 */
declare function checkPassword(password: string, hash: PasswordHash, salt: PasswordSalt, opsLimit?: PasswordOpsLimit, memLimit?: PasswordMemLimit): boolean;
export { passwordOpsLimits, passwordMemLimits, passwordOpsLimitDefault, passwordMemLimitDefault, isPasswordOpsLimit, isPasswordMemLimit, hashPassword, checkPassword, };