vikunja-api/vendor/github.com/pquerna/otp/doc.go
konrad 24904585a2 Add 2fa for authentification (#383)
Fix user tests

Add swagger docs

Fix lint

Add totp check when logging in

Make totp enrollment work

Add migration for totp table

go mod vendor

Add routes for totp routes

Add route handler for totp routes

Add basic implementation to enroll a user in totp

Co-authored-by: kolaente <k@knt.li>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/383
2020-04-17 19:25:35 +00:00

70 lines
2.2 KiB
Go

/**
* Copyright 2014 Paul Querna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package otp implements both HOTP and TOTP based
// one time passcodes in a Google Authenticator compatible manner.
//
// When adding a TOTP for a user, you must store the "secret" value
// persistently. It is recommend to store the secret in an encrypted field in your
// datastore. Due to how TOTP works, it is not possible to store a hash
// for the secret value like you would a password.
//
// To enroll a user, you must first generate an OTP for them. Google
// Authenticator supports using a QR code as an enrollment method:
//
// import (
// "github.com/pquerna/otp/totp"
//
// "bytes"
// "image/png"
// )
//
// key, err := totp.Generate(totp.GenerateOpts{
// Issuer: "Example.com",
// AccountName: "alice@example.com",
// })
//
// // Convert TOTP key into a QR code encoded as a PNG image.
// var buf bytes.Buffer
// img, err := key.Image(200, 200)
// png.Encode(&buf, img)
//
// // display the QR code to the user.
// display(buf.Bytes())
//
// // Now Validate that the user's successfully added the passcode.
// passcode := promptForPasscode()
// valid := totp.Validate(passcode, key.Secret())
//
// if valid {
// // User successfully used their TOTP, save it to your backend!
// storeSecret("alice@example.com", key.Secret())
// }
//
// Validating a TOTP passcode is very easy, just prompt the user for a passcode
// and retrieve the associated user's previously stored secret.
// import "github.com/pquerna/otp/totp"
//
// passcode := promptForPasscode()
// secret := getSecret("alice@example.com")
//
// valid := totp.Validate(passcode, secret)
//
// if valid {
// // Success! continue login process.
// }
package otp