export function decodeBase64Url(string: any): Uint8Array<ArrayBuffer>;
export function decodeBase64UrlToString(string: any): string;
export default class CustomLinkedDataSignature {
    static getVerificationMethod({ proof, documentLoader }: object): Promise<any>;
    static encodeProofValue(signatureBytes: any): string;
    static fromJsigProofValue(proofValue: any): any | string;
    constructor(config: object);
    alg: any;
    useProofValue: any;
    getVerificationMethod({ proof, documentLoader }: object): Promise<any>;
    verifySignature({ verifyData, verificationMethod, proof }: {
        verifyData: Uint8Array;
        verificationMethod: object;
        proof: object;
    }): Promise<boolean>;
    sign({ verifyData, proof }: {
        verifyData: Uint8Array;
        proof: object;
    }): Promise<object>;
}