README.md

Bcrypt

Bcrypt

Package bcrypt implements Provos and Mazières's bcrypt adaptive hashing algorithm.

GenerateFromPassword returns the bcrypt hash of the password at the given cost.

CompareHashAndPassword compares a bcrypt hashed password with its possible plaintext equivalent. Returns nil on success, or an error on failure.

This is part of experimental package. Download the source code of the package using below command for the import to resolve.

go get golang.org/x/crypto/bcrypt

package main

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

func main() {
  password := "admin"

  hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.MinCost)
  if err != nil {
    fmt.Println(err)
  }

  err = bcrypt.CompareHashAndPassword(hash, []byte(password))
  if err != nil {
    fmt.Println(err)
  } else {
    fmt.Println("Password matches")
  }

  err = bcrypt.CompareHashAndPassword(hash, []byte("jedi"))
  if err != nil {
    fmt.Println(err)
  } else {
    fmt.Println("Password matches")
  }
}

Output:

Password matches
crypto/bcrypt: hashedPassword is not the hash of the given password