export interface Ed25519Keypair {
    publicKey: Uint8Array;
    secretKey: Uint8Array;
}
export declare class Ed25519PublicKeyError extends Error {
    constructor(field: string, message: string);
}
export declare function generateEd25519Keypair(): Ed25519Keypair;
export declare function ed25519Sign(sk: Uint8Array, msg: Uint8Array): Uint8Array;
export declare function ed25519Verify(pk: Uint8Array, msg: Uint8Array, sig: Uint8Array): boolean;
/** Decodes standard or URL-safe canonical 32-byte Ed25519 public-key base64. */
export declare function decodeEd25519PublicKey(raw: string, field?: string): Uint8Array;
export declare function encodeEd25519PublicKey(bytes: Uint8Array, field?: string): string;
export declare function canonicalizeEd25519PublicKey(raw: string, field?: string): string;
export declare function publicKeyFingerprint(bytes: Uint8Array): string;