export declare function createQueryParams(params: any): string;
export declare function loginStateKey(appId: string): string;
export declare function transactionKey(appId: string, state: string): string;
export declare function getCrypto(): Crypto;
export declare function getCryptoSubtle(): SubtleCrypto;
export declare function createRandomString(length: number): string;
export declare function string2Buf(str: string): Uint8Array;
export declare function genPKCEPair(algorithm?: string): Promise<{
    codeChallenge: string;
    codeVerifier: string;
}>;
export declare function domainC14n(domain: string): string;
export declare function parseToken(token: string): {
    header: any;
    body: any;
};
export declare function isIE(): boolean;