import type { Writable } from "stream";
import type { ImageOrContainer } from "../container";
import type { ContainerCache } from "../containerCache";
import { DiskFile } from "../steps";
export type SSHKeyType = "dsa" | "ecdsa" | "ecdsa-sk" | "ed25519" | "ed25519-sk" | "rsa";
export declare const defaultSSHKeyGenTypes: SSHKeyType[];
export interface SSHKeyGenConfig<T extends SSHKeyType, P extends string, S extends string> {
    outputFolder: string;
    types?: T[];
    prefix?: P;
    suffix?: S;
    opensshSource?: ImageOrContainer;
    containerCache?: ContainerCache;
    apkCache?: string;
    logger?: Writable;
}
export declare const sshKeygen: <T extends SSHKeyType = "ed25519", P extends string = "ssh_host_", S extends string = "_key">({ outputFolder, opensshSource, types, prefix, suffix, containerCache, apkCache, logger, }: SSHKeyGenConfig<T, P, S>) => Promise<Record<`${P}${T}${S}.pub` | `${P}${T}${S}`, DiskFile>>;