import { sleep } from '@/utils';
/**
 * Signs a hash using BLS signature scheme.
 *
 * @param hash The hash to be signed.
 * @returns The serialized signature in hexadecimal format.
 */
declare function blsSign(hash: string, secretKey: string): Promise<string>;
/**
 * Verifies a BLS signature against a given hash.
 *
 * @param signature The serialized BLS signature.
 * @param hash The hash to verify the signature against.
 * @returns A boolean indicating whether the signature is valid or not.
 */
declare function blsVerify(signature: string, hash: string): Promise<boolean>;
/**
 * Verifies a BLS signature against a given hash and public key.
 *
 * @param pk The public key.
 * @param signature The serialized BLS signature.
 * @param hash The hash to verify the signature against.
 * @returns A boolean indicating whether the signature is valid or not.
 */
declare function blsVerifyWith(pk: string, signature: string, hash: string): Promise<boolean>;
/**
 * Adds a signature to an existing signature.
 *
 * @param secretKey The secret key.
 * @param signature The serialized BLS signature.
 * @param hash The hash to verify the signature against.
 *
 * @returns The serialized signature in hexadecimal format.
 */
declare function blsAddSignature(secretKey: string, signature: string, hash: string): Promise<string>;
export declare function createObjectURL(buf: ArrayBuffer, mimeType: string): Promise<string>;
export declare const getJsProxy: () => {
    secretKey: string | null;
    publicKey: string | null;
} & JsProxyMethods;
export type JsProxyMethods = {
    sign: typeof blsSign;
    verify: typeof blsVerify;
    verifyWith: typeof blsVerifyWith;
    addSignature: typeof blsAddSignature;
    createObjectURL: typeof createObjectURL;
    sleep: typeof sleep;
};
export {};