/// <reference types="node" />
/**
 * Generate entropy with strength
 *
 * @param {number} strength - Strength for entropy
 * @returns - Promise resolving to stringifies data
 */
export declare function generateEntropy(strength?: number): Promise<Buffer>;
/**
 * Generate mnemonic from entropy
 *
 * @param {Buffer} entropy - Entropy for mnemonic
 * @returns - Promise resolving to stringifies data
 */
export declare function generateMnemonicFromEntropy(entropy: Buffer): Promise<string>;
/**
 * Generate mnemonic with strength
 *
 * @param {number} strength - Strength for mnemonic
 * @returns - Promise resolving to stringified data
 */
export declare function generateMnemonic(strength?: number): Promise<string>;
/**
 * Generate seed phrase from mnemonic string
 *
 * @param {string} mnemonicPhrase - Mnemonic phrase
 * @returns - Promise resolving to stringified data
 */
export declare function seedFromMnemonic(mnemonicPhrase: string): Promise<string>;
/**
 * Generate seed phrase from entropy
 *
 * @returns - Promise resolving to stringified data
 * @param {Buffer} entropy - Entropy for seed phrase
 */
export declare function seedFromEntropy(entropy: Buffer): Promise<string>;
/**
 * Derive hd path for seed phrase
 *
 * @param {string} seed - Seed phrase
 * @param {string} path - HD path
 * @returns - Promise resolving to stringified data
 */
export declare function derive(seed: string, path: string): Promise<string>;
/**
 * Get account address and public key by privateKey
 * @param {string} privateKey Private key
 */
export declare function accountInfo(privateKey: string): Promise<{
    publicKey: string;
    address: string;
    publicKeyUncompressed: string;
}>;
/**
 * Sign transaction
 *
 * @returns - Promise resolving to stringified data
 * @param {string} privateKey private key
 * @param {string} message message for signing
 * @returns - Promise resolving to stringified data
 */
export declare function sign(privateKey: string, message: string): Promise<string>;
/**
 * Hash message
 *
 * @returns - Promise resolving to stringified data
 * @param {string} message message for signing
 * @returns - Promise resolving to stringified data
 */
export declare function hashMessage(message: string): Promise<string>;