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auth.go
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auth.go
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// Copyright 2020 Lingfei Kong <colin404@foxmail.com>. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
// Package auth encrypt and compare password string.
package auth
import (
"time"
"github.com/dgrijalva/jwt-go"
"golang.org/x/crypto/bcrypt"
)
// Encrypt encrypts the plain text with bcrypt.
func Encrypt(source string) (string, error) {
hashedBytes, err := bcrypt.GenerateFromPassword([]byte(source), bcrypt.DefaultCost)
return string(hashedBytes), err
}
// Compare compares the encrypted text with the plain text if it's the same.
func Compare(hashedPassword, password string) error {
return bcrypt.CompareHashAndPassword([]byte(hashedPassword), []byte(password))
}
// Sign issue a jwt token based on secretID, secretKey, iss and aud.
func Sign(secretID string, secretKey string, iss, aud string) string {
claims := jwt.MapClaims{
"exp": time.Now().Add(time.Minute).Unix(),
"iat": time.Now().Unix(),
"nbf": time.Now().Add(0).Unix(),
"aud": aud,
"iss": iss,
}
// create a new token
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
token.Header["kid"] = secretID
// Sign the token with the specified secret.
tokenString, _ := token.SignedString([]byte(secretKey))
return tokenString
}