import { AuthenticationJSON, NamedAlgo, RegistrationJSON, RegistrationInfo, AuthenticationInfo, Base64URLString, CredentialInfo } from "./types.js";
export declare function randomChallenge(): string;
interface RegistrationChecks {
    challenge: string | Function;
    origin: string | Function;
}
export declare function verifyRegistration(registrationJson: RegistrationJSON, expected: RegistrationChecks): Promise<RegistrationInfo>;
interface AuthenticationChecks {
    challenge: string | Function;
    origin: string | Function;
    userVerified: boolean;
    counter?: number;
    domain?: string;
    verbose?: boolean;
}
export declare function verifyAuthentication(authenticationJson: AuthenticationJSON, credential: CredentialInfo, expected: AuthenticationChecks): Promise<AuthenticationInfo>;
export declare function parseCryptoKey(algorithm: NamedAlgo, publicKey: string): Promise<CryptoKey>;
type VerifyParams = {
    algorithm: NamedAlgo;
    publicKey: Base64URLString;
    authenticatorData: Base64URLString;
    clientData: Base64URLString;
    signature: Base64URLString;
    verbose?: boolean;
};
export declare function verifySignature({ algorithm, publicKey, authenticatorData, clientData, signature, verbose }: VerifyParams): Promise<boolean>;
export {};