Build a secure authentication system using Golang and Vault

Build a secure authentication system using Golang and Vault

In today's Internet era, protecting the security of user data has become a very important task. Authentication, as the first line of defense to protect user data, is an essential module for any application. To ensure the security of authentication, we can use Golang and Vault to build a secure authentication system.

Vault is an open source tool developed by HashiCorp for secure management and protection of sensitive data, such as API keys, passwords, certificates, etc. It has key management, authentication, access control and other functions, which can help us build a powerful and secure authentication system.

First, we need to install and configure Vault. You can download it from the HashiCorp official website and install and configure it according to the official documentation. Once installed, we can interact with Vault via the HTTP REST API or Golang SDK.

Next, we will write a simple authentication system using Golang. First, we need to introduce Vault’s Golang SDK. It can be installed using the following command:

go get github.com/hashicorp/vault/api

Then, we need to import Vault’s Golang SDK:

import (
    "github.com/hashicorp/vault/api"
)

Next, we need to set up the connection to Vault. First, we need to obtain the Vault token. You can create a token on Vault's web interface and save it in a configuration file and then read it in your code. Please note that here we only hardcode the token directly into the code for demonstration purposes. In practice, please follow best practices.

config := &api.Config{
    Address: "http://localhost:8200",
}

client, err := api.NewClient(config)
if err != nil {
    log.Fatal(err)
}

client.SetToken("your_vault_token")

Now that we have successfully connected to Vault, we will create a simple authentication function. We can use Vault's K/V storage engine to store key-value pairs of usernames and passwords. First, we need to create a secret storage path for the K/V storage engine.

path := "/secret/userinfo"

data := map[string]interface{}{
    "username": "admin",
    "password": "password123",
}

_, err := client.Logical().Write(path, data)
if err != nil {
    log.Fatal(err)
}

Now that we have stored the username and password in Vault, we will write a verification function to verify that the username and password entered by the user are correct.

func authenticate(username, password string) bool {
    path := "/secret/userinfo"

    secret, err := client.Logical().ReadWithData(path, map[string]interface{}{"key": "value"})
    if err != nil {
        log.Fatal(err)
    }

    storedUsername := secret.Data["username"].(string)
    storedPassword := secret.Data["password"].(string)

    if username == storedUsername && password == storedPassword {
        return true
    }

    return false
}

In the above code, we first use Vault’s API to read the stored username and password. We then compare the username and password entered by the user with the stored values. Returns true if there is a match, false otherwise.

Now we can use the above authentication function to verify the user's identity.

username := "admin"
password := "password123"

result := authenticate(username, password)

if result {
    fmt.Println("Authentication succeeded")
} else {
    fmt.Println("Authentication failed")
}

In the above code, we pass the username and password to the authenticate function for authentication. Based on the returned results, we output the corresponding information.

By using Golang and Vault, we can build a secure and strong authentication system. The powerful functions of Vault can help us protect the security of user data, while the simplicity and efficiency of Golang make the development process smoother.

Full code example:

package main

import (
    "fmt"
    "log"

    "github.com/hashicorp/vault/api"
)

func main() {
    config := &api.Config{
        Address: "http://localhost:8200",
    }

    client, err := api.NewClient(config)
    if err != nil {
        log.Fatal(err)
    }

    client.SetToken("your_vault_token")

    path := "/secret/userinfo"

    data := map[string]interface{}{
        "username": "admin",
        "password": "password123",
    }

    _, err = client.Logical().Write(path, data)
    if err != nil {
        log.Fatal(err)
    }

    username := "admin"
    password := "password123"

    result := authenticate(client, username, password)

    if result {
        fmt.Println("Authentication succeeded")
    } else {
        fmt.Println("Authentication failed")
    }
}

func authenticate(client *api.Client, username, password string) bool {
    path := "/secret/userinfo"

    secret, err := client.Logical().ReadWithData(path, map[string]interface{}{})
    if err != nil {
        log.Fatal(err)
    }

    storedUsername := secret.Data["username"].(string)
    storedPassword := secret.Data["password"].(string)

    if username == storedUsername && password == storedPassword {
        return true
    }

    return false
}

In this article, we built a simple and secure authentication system using Golang and Vault. By using Vault’s API, we can easily store sensitive data in Vault and use Golang to authenticate users. This way, we ensure the security of our users' data and provide a strong and secure authentication process.

The above is the detailed content of Build a secure authentication system using Golang and Vault. For more information, please follow other related articles on the PHP Chinese website!