import { type KeyObject } from "node:crypto";
export interface LocalKeyPair {
    readonly privateKey: KeyObject;
    readonly publicKey: KeyObject;
    readonly kid: string;
    readonly publicKeySha256: string;
}
export interface LocalIssuer {
    readonly type: "local";
    readonly kid: string;
    readonly public_key_sha256: string;
}
export interface LocalSignature {
    readonly alg: "Ed25519";
    readonly value: string;
}
export declare function loadOrCreateLocalKey(runxHome?: string): Promise<LocalKeyPair>;
export declare function loadLocalPublicKey(runxHome?: string): Promise<Pick<LocalKeyPair, "publicKey" | "publicKeySha256"> | undefined>;
export declare function localIssuer(keyPair: Pick<LocalKeyPair, "kid" | "publicKeySha256">): LocalIssuer;
export declare function signPayloadString(payload: string, privateKey: KeyObject): LocalSignature;
export declare function verifyPayloadString(payload: string, signature: LocalSignature, publicKey: KeyObject): boolean;
export declare function stableStringify(value: unknown): string;
export declare function defaultRunxHome(): string;