import { ec as EC } from 'elliptic';
declare const secp256k1: EC;
type ECPoint = ReturnType<typeof secp256k1.g.mul>;
export declare class PublicKey {
    Q: ECPoint | null;
    pubdata?: string;
    /** @param {Point} public key */
    constructor(Q: ECPoint | null);
    static fromBinary(bin: string): PublicKey;
    static fromBuffer(buffer: Buffer): PublicKey;
    toBuffer(compressed?: boolean): Buffer;
    static fromPoint(point: ECPoint): PublicKey;
    toUncompressed(): PublicKey;
    /** bts::blockchain::address (unique but not a full public key) */
    toBlockchainAddress(): Buffer;
    toString(address_prefix?: string | undefined): string;
    /**
     * Full public key
     * {return} string
     */
    toPublicKeyString(address_prefix?: string | undefined): string;
    /**
     * @arg {string} public_key - like STMXyz...
     * @arg {string} address_prefix - like STM
     * @return PublicKey or `null` (if the public_key string is invalid)
     * @deprecated fromPublicKeyString (use fromString instead)
     */
    static fromString(public_key: string, address_prefix?: string | undefined): PublicKey | null;
    /**
     * @arg {string} public_key - like STMXyz...
     * @arg {string} address_prefix - like STM
     * @throws {Error} if public key is invalid
     * @return PublicKey
     */
    static fromStringOrThrow(public_key: string, address_prefix?: string | undefined): PublicKey;
    toAddressString(address_prefix?: unknown): string;
    toPtsAddy(): string;
    child(offset: Buffer): PublicKey;
    static fromHex(hex: string): PublicKey;
    toHex(): string;
    static fromStringHex(hex: string): PublicKey;
}
export {};