import { EnvelopeDataType, SignatureProviderRequestEnvelope, SignatureProviderResponseEnvelope } from './interfaces';
export declare type SignatureProviderEnvelope = SignatureProviderRequestEnvelope | SignatureProviderResponseEnvelope;
export declare const packEnvelope: (envelope: SignatureProviderEnvelope) => string;
export declare const unpackEnvelope: <TEnvelope extends SignatureProviderEnvelope>(packedEnvelope: string) => TEnvelope;
export declare const envelopeDataType: (envelope: SignatureProviderEnvelope) => EnvelopeDataType;
export declare const arrayToHex: (data: Uint8Array) => string;
export declare const hexToArray: (hex: string) => Uint8Array;
export declare const hexEncode: (str: string) => string;
export declare const hexDecode: (hex: string) => string;