有人能告诉我在哪里可以写我的bcrypt-hashing函数吗？

import bcrypt

def bcrypt_hash(password):
    hashed_password = bcrypt.hashpw(password.encode('utf-8'), bcrypt.gensalt())
    return hashed_password.decode('utf-8')

const bcrypt = require('bcrypt');

function bcryptHash(password) {
    const salt = bcrypt.genSaltSync(10);
    const hashedPassword = bcrypt.hashSync(password, salt);
    return hashedPassword;
}

import org.mindrot.jbcrypt.BCrypt;

public String bcryptHash(String password) {
    String hashedPassword = BCrypt.hashpw(password, BCrypt.gensalt());
    return hashedPassword;
}