-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Added JWT and Paseto to create and verify tokens
- Loading branch information
1 parent
f1acb06
commit 41cfab3
Showing
8 changed files
with
299 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,60 @@ | ||
package token | ||
|
||
import ( | ||
"errors" | ||
"fmt" | ||
"time" | ||
|
||
"github.com/dgrijalva/jwt-go" | ||
) | ||
|
||
const minSecretKeySize = 32 | ||
|
||
type JWTMaker struct { | ||
secretKey string | ||
} | ||
|
||
func NewJWTMaker(secretKey string) (Maker, error) { | ||
if len(secretKey) < minSecretKeySize { | ||
return nil, fmt.Errorf("invalid key size: must be at least %d characters", minSecretKeySize) | ||
} | ||
|
||
return &JWTMaker{secretKey}, nil | ||
} | ||
|
||
func (maker *JWTMaker) CreateToken(username string, duration time.Duration) (string, error) { | ||
payload, err := NewPayload(username, duration) | ||
if err != nil { | ||
return "", err | ||
} | ||
|
||
jwtToken := jwt.NewWithClaims(jwt.SigningMethodHS256, payload) | ||
return jwtToken.SignedString([]byte(maker.secretKey)) | ||
} | ||
|
||
func (maker *JWTMaker) VerifyToken(token string) (*Payload, error) { | ||
keyFunc := func(token *jwt.Token) (interface{}, error) { | ||
_, ok := token.Method.(*jwt.SigningMethodHMAC) | ||
if !ok { | ||
return nil, ErrInvalidToken | ||
} | ||
|
||
return []byte(maker.secretKey), nil | ||
} | ||
|
||
jwtToken, err := jwt.ParseWithClaims(token, &Payload{}, keyFunc) | ||
if err != nil { | ||
verr, ok := err.(*jwt.ValidationError) | ||
if ok && errors.Is(verr.Inner, ErrExpiredToken) { | ||
return nil, ErrExpiredToken | ||
} | ||
return nil, ErrInvalidToken | ||
} | ||
|
||
payload, ok := jwtToken.Claims.(*Payload) | ||
if !ok { | ||
return nil, ErrInvalidToken | ||
} | ||
|
||
return payload, nil | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,65 @@ | ||
package token | ||
|
||
import ( | ||
"testing" | ||
"time" | ||
|
||
"github.com/PfMartin/secure-bank/util" | ||
"github.com/dgrijalva/jwt-go" | ||
"github.com/stretchr/testify/require" | ||
) | ||
|
||
func TestJWTMaker(t *testing.T) { | ||
maker, err := NewJWTMaker(util.RandomString(32)) | ||
require.NoError(t, err) | ||
|
||
username := util.RandomOwner() | ||
duration := time.Minute | ||
|
||
issuedAt := time.Now() | ||
expiredAt := issuedAt.Add(duration) | ||
|
||
token, err := maker.CreateToken(username, duration) | ||
require.NoError(t, err) | ||
require.NotEmpty(t, token) | ||
|
||
payload, err := maker.VerifyToken(token) | ||
require.NoError(t, err) | ||
require.NotEmpty(t, payload) | ||
|
||
require.NotZero(t, payload.ID) | ||
require.Equal(t, username, payload.Username) | ||
require.WithinDuration(t, issuedAt, payload.IssuedAt, time.Second) | ||
require.WithinDuration(t, expiredAt, payload.ExpiredAt, time.Second) | ||
} | ||
|
||
func TestExpiredJWTToken(t *testing.T) { | ||
maker, err := NewJWTMaker(util.RandomString(32)) | ||
require.NoError(t, err) | ||
|
||
token, err := maker.CreateToken(util.RandomOwner(), -time.Minute) | ||
require.NoError(t, err) | ||
require.NotEmpty(t, token) | ||
|
||
payload, err := maker.VerifyToken(token) | ||
require.Error(t, err) | ||
require.EqualError(t, err, ErrExpiredToken.Error()) | ||
require.Nil(t, payload) | ||
} | ||
|
||
func TestInvalidJWTTokenAlgNone(t *testing.T) { | ||
payload, err := NewPayload(util.RandomOwner(), time.Minute) | ||
require.NoError(t, err) | ||
|
||
jwtToken := jwt.NewWithClaims(jwt.SigningMethodNone, payload) | ||
token, err := jwtToken.SignedString(jwt.UnsafeAllowNoneSignatureType) | ||
require.NoError(t, err) | ||
|
||
maker, err := NewJWTMaker(util.RandomString(32)) | ||
require.NoError(t, err) | ||
|
||
payload, err = maker.VerifyToken(token) | ||
require.Error(t, err) | ||
require.EqualError(t, err, ErrInvalidToken.Error()) | ||
require.Nil(t, payload) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,9 @@ | ||
package token | ||
|
||
import "time" | ||
|
||
// Maker is an interface for managing tokens | ||
type Maker interface { | ||
CreateToken(username string, duration time.Duration) (string, error) | ||
VerifyToken(token string) (*Payload, error) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,51 @@ | ||
package token | ||
|
||
import ( | ||
"fmt" | ||
"time" | ||
|
||
"github.com/aead/chacha20poly1305" | ||
"github.com/o1egl/paseto" | ||
) | ||
|
||
type PasetoMaker struct { | ||
paseto *paseto.V2 | ||
symmetricKey []byte | ||
} | ||
|
||
func NewPasetoMaker(symmetricKey string) (Maker, error) { | ||
if len(symmetricKey) != chacha20poly1305.KeySize { | ||
return nil, fmt.Errorf("invalid key size: must be exactly %d characters", chacha20poly1305.KeySize) | ||
} | ||
|
||
maker := &PasetoMaker{ | ||
paseto: paseto.NewV2(), | ||
symmetricKey: []byte(symmetricKey), | ||
} | ||
|
||
return maker, nil | ||
} | ||
|
||
func (maker *PasetoMaker) CreateToken(username string, duration time.Duration) (string, error) { | ||
payload, err := NewPayload(username, duration) | ||
if err != nil { | ||
return "", err | ||
} | ||
|
||
return maker.paseto.Encrypt(maker.symmetricKey, payload, nil) | ||
} | ||
|
||
func (maker *PasetoMaker) VerifyToken(token string) (*Payload, error) { | ||
payload := &Payload{} | ||
err := maker.paseto.Decrypt(token, maker.symmetricKey, payload, nil) | ||
if err != nil { | ||
return nil, ErrInvalidToken | ||
} | ||
|
||
err = payload.Valid() | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
||
return payload, nil | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,47 @@ | ||
package token | ||
|
||
import ( | ||
"testing" | ||
"time" | ||
|
||
"github.com/PfMartin/secure-bank/util" | ||
"github.com/stretchr/testify/require" | ||
) | ||
|
||
func TestPasetoMaker(t *testing.T) { | ||
maker, err := NewPasetoMaker(util.RandomString(32)) | ||
require.NoError(t, err) | ||
|
||
username := util.RandomOwner() | ||
duration := time.Minute | ||
|
||
issuedAt := time.Now() | ||
expiredAt := issuedAt.Add(duration) | ||
|
||
token, err := maker.CreateToken(username, duration) | ||
require.NoError(t, err) | ||
require.NotEmpty(t, token) | ||
|
||
payload, err := maker.VerifyToken(token) | ||
require.NoError(t, err) | ||
require.NotEmpty(t, payload) | ||
|
||
require.NotZero(t, payload.ID) | ||
require.Equal(t, username, payload.Username) | ||
require.WithinDuration(t, issuedAt, payload.IssuedAt, time.Second) | ||
require.WithinDuration(t, expiredAt, payload.ExpiredAt, time.Second) | ||
} | ||
|
||
func TestExpiredPasetoToken(t *testing.T) { | ||
maker, err := NewPasetoMaker(util.RandomString(32)) | ||
require.NoError(t, err) | ||
|
||
token, err := maker.CreateToken(util.RandomOwner(), -time.Minute) | ||
require.NoError(t, err) | ||
require.NotEmpty(t, token) | ||
|
||
payload, err := maker.VerifyToken(token) | ||
require.Error(t, err) | ||
require.EqualError(t, err, ErrExpiredToken.Error()) | ||
require.Nil(t, payload) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,44 @@ | ||
package token | ||
|
||
import ( | ||
"errors" | ||
"time" | ||
|
||
"github.com/google/uuid" | ||
) | ||
|
||
var ( | ||
ErrExpiredToken = errors.New("token has expired") | ||
ErrInvalidToken = errors.New("token is invalid") | ||
) | ||
|
||
type Payload struct { | ||
ID uuid.UUID `json:"id"` | ||
Username string `json:"username"` | ||
IssuedAt time.Time `json:"issued_at"` | ||
ExpiredAt time.Time `json:"expired_at"` | ||
} | ||
|
||
func NewPayload(username string, duration time.Duration) (*Payload, error) { | ||
tokenID, err := uuid.NewRandom() | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
||
payload := &Payload{ | ||
ID: tokenID, | ||
Username: username, | ||
IssuedAt: time.Now(), | ||
ExpiredAt: time.Now().Add(duration), | ||
} | ||
|
||
return payload, nil | ||
} | ||
|
||
func (p *Payload) Valid() error { | ||
if time.Now().After(p.ExpiredAt) { | ||
return ErrExpiredToken | ||
} | ||
|
||
return nil | ||
} |