export interface KdfParams {
    m: number;
    t: number;
    p: number;
}
export declare const DEFAULT_KDF_PARAMS: KdfParams;
export declare const SALT_LEN = 16;
export declare const DERIVED_KEY_LEN = 32;
export declare function deriveKey(passphrase: Buffer | Uint8Array, salt: Buffer | Uint8Array, params?: KdfParams): Buffer;
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