library Base58 {
    /**
    * @notice encode is used to encode the given bytes in base58 standard.
    * @param data_ raw data, passed in as bytes.
    * @return base58 encoded data_, returned as bytes.
    */
    function encode(bytes memory data_) public pure returns (bytes memory);
    /**
    * @notice decode is used to decode the given string in base58 standard.
    * @param data_ data encoded with base58, passed in as bytes.
    * @return raw data, returned as bytes.
    */
    function decode(bytes memory data_) public pure returns (bytes memory)
    /**
    * @notice encodeToString is used to encode the given byte in base58 standard.
    * @param data_ raw data, passed in as bytes.
    * @return base58 encoded data_, returned as a string.
    */
    function encodeToString(bytes memory data_) public pure returns (string memory)
    /**
    * @notice encodeFromString is used to encode the given string in base58 standard.
    * @param data_ raw data, passed in as a string.
    * @return base58 encoded data_, returned as bytes.
    */
    function encodeFromString(string memory data_) public pure returns (bytes memory)
    /**
    * @notice decode is used to decode the given string in base58 standard.
    * @param data_ data encoded with base58, passed in as string.
    * @return raw data, returned as bytes.
    */
    function decodeFromString(string memory data_) public pure returns (bytes memory)
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "base58-solidity/contracts/Base58.sol";

contract TestContract {
    // input: hello
    // output: Cn8eVZg
    function encode(string memory data_) public pure returns (string memory) {
        return string(Base58.encodeFromString(data_));
    }
    // input: Cn8eVZg
    // output: hello
    function decode(string memory data_) public pure returns (string memory) {
        return string(Base58.decodeFromString(data_));
    }
}