export declare function bufferToHex(buffer: ArrayBuffer): string;
/******** AttemptUUID ********/
export declare type AttemptUUID = string;
export declare function isValidAttemptUUID(id: string): boolean;
export declare function newAttemptUUID(date: number): Promise<AttemptUUID>;
/******** SessionUUID ********/
export declare type SessionUUID = string;
export declare function newSessionUUID(): Promise<SessionUUID>;
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