export declare function encrypt(val: string, keyString: string): Promise<string>;
export declare function decrypt(encrypted: string, keyString: string): Promise<string | null>;
export interface TokenInfo {
    expiry_date: number;
    scopes: string[];
    access_type: string;
    azp: string;
    aud: string;
    exp: string;
}
export declare function getTokenInfo(accessToken: string): Promise<TokenInfo>;
//# sourceMappingURL=GoogleAuthService.d.ts.map