How Can I Ensure Bcrypt Password Hashing Compatibility Between Node.js and Golang?

Bcrypt Password Hashing in Golang: Achieving Compatibility with Node.js

Migrating authentication systems from Node.js to Golang requires addressing password hashing compatibility. This article presents a solution using Node.js bcrypt and its equivalent in Golang, golang.org/x/crypto/bcrypt.

To replicate the hashed string generated by Node.js bcrypt in Golang, use the following code:

hashedPassword, err := bcrypt.GenerateFromPassword(password, bcrypt.DefaultCost)

Here's a working example:

package main

import (
    "golang.org/x/crypto/bcrypt"
    "fmt"
)

func main() {
    password := []byte("MyDarkSecret")

    hashedPassword, err := bcrypt.GenerateFromPassword(password, bcrypt.DefaultCost)
    if err != nil {
        panic(err)
    }
    fmt.Println(string(hashedPassword))

    err = bcrypt.CompareHashAndPassword(hashedPassword, password)
    fmt.Println(err) // nil means it is a match
}

By utilizing golang.org/x/crypto/bcrypt, you can ensure compatibility with your existing authentication system while migrating to Golang.

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