import { Encrypted } from "eth-crypto";
export declare type IdentityType = {
    privateKey: string;
    publicKey: string;
    address: string;
};
export declare type SerializedPublicKey = {
    pubKeyPrefix: boolean;
    pubKey: Array<number>;
};
/**
 * Used for Premium Content's encryption/decryption and contract store for pubkeys
**/
export declare class IdenityService {
    private identity;
    constructor(identity?: IdentityType | null);
    encryptData(data: string): Promise<Encrypted>;
    decryptEncryptedData(encryptedData: Encrypted): Promise<string>;
    getCompressedPublicKey(): string;
    getDecompressedPublicKey(): string;
    getSerializedPublicKey(): SerializedPublicKey;
}
export declare function createIdentity(): IdentityType;
export declare function encryptData(pubKey: string, data: string): Promise<Encrypted>;
export declare function decryptData(privKey: string, encryptedData: Encrypted): Promise<string>;
export declare function compressPublicKey(pubKey: string): string;
/**
 * For contract store, the public key has to be serialized and compressed
 * as much as possible
**/
export declare function serializePublicKey(pubKey: string): SerializedPublicKey;
/**
 * Get decompressed public key string from contract store
**/
export declare function unserializePublicKey(pubKeyPrefix: boolean, pubKey: string): string;