import type { Uint8Array_ } from '../types/index.js';
/**
 * Generate a suitably random value to be used as an attestation or assertion challenge
 */
export declare function generateChallenge(): Promise<Uint8Array_>;
/**
 * Make it possible to stub the return value during testing
 * @ignore Don't include this in docs output
 */
export declare const _generateChallengeInternals: {
    stubThis: (value: Uint8Array_) => Uint8Array;
};
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