LICENSE

@@ -1,4 +1,4 @@
-Copyright (C) 2025 Marius Schellenberger
+Copyright (C) 2018 Marius Schellenberger
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

blacklist.go

@@ -1,4 +1,4 @@
-// Copyright (C) 2025 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
 package jwt
 

claims.go

@@ -1,4 +1,4 @@
-// Copyright (C) 2025 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
 package jwt
 
@@ -30,31 +30,40 @@ func (c Claims) GetBool(key string) (b bool) {
 
 // GetInt returns an int from the claims map
 func (c Claims) GetInt(key string) (i int) {
-	i = int(c.GetInt64(key))
+	if f, ok := c.getFloat64(key); ok {
+		return int(f)
+	}
+	if v, ok := c.Get(key); ok && v != nil {
+		i, _ = v.(int)
+	}
 	return
 }
 
 // GetInt64 returns an int64 from the claims map
 func (c Claims) GetInt64(key string) (i int64) {
+	if f, ok := c.getFloat64(key); ok {
+		return int64(f)
+	}
 	if v, ok := c.Get(key); ok && v != nil {
-		switch val := v.(type) {
+		i, _ = v.(int64)
-		case int64:
-			i = val
-		case float64:
-			i = int64(val)
-		}
 	}
 	return
 }
 
 // getFloat64 returns a float64 and ok from the claims map
-func (c Claims) GetFloat64(key string) (f float64) {
+func (c Claims) getFloat64(key string) (f float64, fok bool) {
 	if v, ok := c.Get(key); ok && v != nil {
-		f, _ = v.(float64)
+		f, fok = v.(float64)
 	}
 	return
 }
 
+// GetFloat64 returns a float64 from the claims map
+func (c Claims) GetFloat64(key string) (f float64) {
+	f, _ = c.getFloat64(key)
+	return
+}
+
 // Set sets the value of key in the claims map, if not nil
 func (c Claims) Set(key string, v interface{}) {
 	if c == nil {

encoding.go

@@ -1,7 +0,0 @@
-// Copyright (C) 2025 Marius Schellenberger
-
-package jwt
-
-import "encoding/base64"
-
-var enc = base64.RawURLEncoding

hash.go

@@ -1,4 +1,4 @@
-// Copyright (C) 2025 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
 package jwt
 
@@ -14,25 +14,19 @@ const (
 	HS512Name = "HS512"
 )
 
-// NewHash returns the Hash type equal to the input string
+// ParseHash returns the Hash type equal to the input string
-func NewHash(alg string) Hash {
+func ParseHash(alg string) Hash {
 	switch alg {
 	case HS256Name:
-		return hs256
+		return NewHS256()
 	case HS384Name:
-		return hs384
+		return NewHS384()
 	case HS512Name:
-		return hs512
+		return NewHS512()
 	}
 	return nil
 }
 
-var (
-	hs256 = HS256{}
-	hs384 = HS384{}
-	hs512 = HS512{}
-)
-
 // Hash is the hashsum interface for signing the jwt
 type Hash interface {
 	Hash() hash.Hash
@@ -42,6 +36,11 @@ type Hash interface {
 // HS256 implements the Hash interface with SHA256
 type HS256 struct{}
 
+// NewHS256 returns a new HS256 instance
+func NewHS256() Hash {
+	return HS256{}
+}
+
 // Alg returns the algorithm name "HS256"
 func (HS256) Alg() string {
 	return HS256Name
@@ -55,6 +54,11 @@ func (HS256) Hash() hash.Hash {
 // HS384 implements the Hash interface with SHA384
 type HS384 struct{}
 
+// NewHS384 returns a new HS384 instance
+func NewHS384() Hash {
+	return HS384{}
+}
+
 // Alg returns the algorithm name "HS384"
 func (HS384) Alg() string {
 	return HS384Name
@@ -68,6 +72,11 @@ func (HS384) Hash() hash.Hash {
 // HS512 implements the Hash interface with SHA512
 type HS512 struct{}
 
+// NewHS512 returns a new HS512 instance
+func NewHS512() Hash {
+	return HS512{}
+}
+
 // Alg returns the algorithm name "HS512"
 func (HS512) Alg() string {
 	return HS512Name

jwt.go

@@ -1,4 +1,4 @@
-// Copyright (C) 2025 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
 // Package jwt provides a easy to use JSON Web Token and blacklisting library
 package jwt
@@ -6,6 +6,7 @@ package jwt
 import (
 	"crypto/hmac"
 	"crypto/rand"
+	"encoding/base64"
 	"encoding/json"
 	"errors"
 	"io"
@@ -31,8 +32,6 @@ const (
 	ExpClaim = "exp"
 	// NbfClaim is the nbf claim name
 	NbfClaim = "nbf"
-	// NonceClaim
-	NonceClaim = "nonce"
 	// TokenSeparator is the tokens separator char
 	TokenSeparator = "."
 )
@@ -59,39 +58,14 @@ var (
 	ErrInvalidKeySize      = errors.New(jwtErr + "invalid secret key size")
 )
 
-type JWTOption func(*JWT)
-
-func WithExpiry(expiry time.Duration) JWTOption {
-	return func(jwt *JWT) {
-		jwt.expiry = expiry
-	}
-}
-
-func WithBlacklist(blacklist Blacklist) JWTOption {
-	return func(jwt *JWT) {
-		jwt.blacklist = blacklist
-	}
-}
-func WithSecret(secret io.Reader) JWTOption {
-	return func(jwt *JWT) {
-		jwt.secretReader = secret
-	}
-}
-func WithNonce() JWTOption {
-	return func(jwt *JWT) {
-		jwt.nonce = true
-	}
-}
-
 // JWT represents the JSON Web Token signing and blacklisting infrastructure
 type JWT struct {
-	secretReader io.Reader
+	key    []byte
-	key          []byte
+	expiry time.Duration
-	expiry       time.Duration
+
-	blacklist    Blacklist
+	blacklist Blacklist
-	nonce        bool
+	stopOnce  sync.Once
-	stopOnce     sync.Once
+	done      chan struct{}
-	done         chan struct{}
 }
 
 // New returns a new JWT object with the given expiry timeout.
@@ -100,18 +74,14 @@ type JWT struct {
 // If secret is nil the DefaultSecretReader is used.
 // If blacklisting is enabled, the JWT object leaks a goroutine to garbage-collect expired blacklisted tokens.
 // Call the Stop() method to exit the goroutine.
-func New(options ...JWTOption) (*JWT, error) {
+func New(expiry time.Duration, blacklist Blacklist, secret io.Reader) (*JWT, error) {
-	jwt := &JWT{}
+	if expiry <= 0 {
-	for _, option := range options {
+		expiry = DefaultExpiry
-		option(jwt)
 	}
-	if jwt.expiry <= 0 {
+	if secret == nil {
-		jwt.expiry = DefaultExpiry
+		secret = DefaultSecretReader
 	}
-	if jwt.secretReader == nil {
+	secret = io.LimitReader(secret, KeySize)
-		jwt.secretReader = DefaultSecretReader
-	}
-	secret := io.LimitReader(jwt.secretReader, KeySize)
 	key := make([]byte, KeySize)
 	i, err := secret.Read(key)
 	if err != nil {
@@ -120,8 +90,12 @@ func New(options ...JWTOption) (*JWT, error) {
 	if i < KeySize {
 		return nil, ErrInvalidKeySize
 	}
-	jwt.key = key
+	jwt := &JWT{
-	if jwt.blacklist != nil {
+		key:       key,
+		expiry:    expiry,
+		blacklist: blacklist,
+	}
+	if blacklist != nil {
 		jwt.done = make(chan struct{})
 		go jwt.clean()
 	}
@@ -155,7 +129,7 @@ func (jwt *JWT) Invalidate(t *Token) error {
 	if t.Header.GetString(TypClaim) != Typ {
 		return ErrNoJWT
 	}
-	h := NewHash(t.Header.GetString(AlgClaim))
+	h := ParseHash(t.Header.GetString(AlgClaim))
 	if h == nil {
 		return ErrUnsupportedAlg
 	}
@@ -217,7 +191,7 @@ func (jwt *JWT) Sign(t *Token) (err error) {
 	if t.Header.GetString(TypClaim) != Typ {
 		return ErrNoJWT
 	}
-	h := NewHash(t.Header.GetString(AlgClaim))
+	h := ParseHash(t.Header.GetString(AlgClaim))
 	if h == nil {
 		return ErrUnsupportedAlg
 	}
@@ -228,9 +202,6 @@ func (jwt *JWT) Sign(t *Token) (err error) {
 	if _, ok := t.Claims.Get(NbfClaim); !ok {
 		t.Claims.Set(NbfClaim, NewNbf(now))
 	}
-	if jwt.nonce {
-		t.Claims.Set(NonceClaim, enc.EncodeToString(key16()))
-	}
 	head, err := json.Marshal(t.Header)
 	if err != nil {
 		return
@@ -239,9 +210,9 @@ func (jwt *JWT) Sign(t *Token) (err error) {
 	if err != nil {
 		return
 	}
-	t.data = enc.EncodeToString(head) + TokenSeparator + enc.EncodeToString(claims)
+	t.data = base64.URLEncoding.EncodeToString(head) + TokenSeparator + base64.URLEncoding.EncodeToString(claims)
 	t.rawSignature = jwt.sum(t.data, h)
-	t.signature = enc.EncodeToString(t.rawSignature)
+	t.signature = base64.URLEncoding.EncodeToString(t.rawSignature)
 	t.raw = t.data + TokenSeparator + t.signature
 	return
 }
@@ -260,7 +231,7 @@ func (jwt *JWT) Verify(t *Token) error {
 	if t.Header.GetString(TypClaim) != Typ {
 		return ErrNoJWT
 	}
-	h := NewHash(t.Header.GetString(AlgClaim))
+	h := ParseHash(t.Header.GetString(AlgClaim))
 	if h == nil {
 		return ErrUnsupportedAlg
 	}

jwt_test.go

@@ -1,4 +1,4 @@
-// Copyright (C) 2025 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
 package jwt
 
@@ -17,10 +17,7 @@ var claims = Claims{
 }
 
 func TestValidate(t *testing.T) {
-	jwt, err := New(
+	jwt, err := New(time.Second, NewMemBlacklist(), nil)
-		WithExpiry(time.Second),
-		WithBlacklist(NewMemBlacklist()),
-	)
 	if err != nil {
 		t.Error(err)
 	}
@@ -86,35 +83,8 @@ func TestValidate(t *testing.T) {
 	}
 }
 
-func TestNonce(t *testing.T) {
-	jwt, err := New(
-		WithExpiry(time.Second),
-		WithNonce(),
-	)
-	if err != nil {
-		t.Error(err)
-	}
-	token := NewToken(claims.Copy(), nil)
-	err = jwt.Sign(token)
-	if err != nil {
-		t.Error(err)
-	}
-	nt, err := DecodeToken(token.String())
-	if err != nil {
-		t.Error(err)
-	}
-	err = jwt.Verify(nt)
-	if err != nil {
-		t.Error(err)
-	}
-	nonce := nt.Claims.GetString(NonceClaim)
-	if nonce == "" {
-		t.Error(errors.New("nonce is empty"))
-	}
-}
-
 func TestNoBlacklist(t *testing.T) {
-	jwt, err := New(WithExpiry(time.Second))
+	jwt, err := New(time.Second, nil, nil)
 	if err != nil {
 		t.Error(err)
 	}
@@ -148,27 +118,21 @@ func TestNoBlacklist(t *testing.T) {
 }
 
 func TestEmptySecretReader(t *testing.T) {
-	_, err := New(
+	_, err := New(time.Second, nil, new(bytes.Buffer))
-		WithExpiry(time.Second),
-		WithSecret(new(bytes.Buffer)),
-	)
 	if err == nil {
 		t.Error(errors.New("error should be secret reader error"))
 	}
 }
 
 func TestInvalidSecretReader(t *testing.T) {
-	_, err := New(
+	_, err := New(time.Second, nil, bytes.NewBufferString("123"))
-		WithExpiry(time.Second),
-		WithSecret(bytes.NewBufferString("123")),
-	)
 	if err != ErrInvalidKeySize {
 		t.Error(errors.New("error should be invalid key size"))
 	}
 }
 
 func BenchmarkDecodeToken(b *testing.B) {
-	jwt, _ := New()
+	jwt, _ := New(0, nil, nil)
 	t := NewToken(claims.Copy(), nil)
 	jwt.Sign(t)
 	token := t.String()
@@ -181,19 +145,19 @@ func BenchmarkDecodeToken(b *testing.B) {
 func BenchmarkNew(b *testing.B) {
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
-		New()
+		New(0, nil, nil)
 	}
 }
 
 func BenchmarkNewWithBlacklist(b *testing.B) {
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
-		New(WithBlacklist(NewMemBlacklist()))
+		New(0, NewMemBlacklist(), nil)
 	}
 }
 
 func BenchmarkSignHS256(b *testing.B) {
-	jwt, _ := New()
+	jwt, _ := New(0, nil, nil)
 	t := NewToken(claims.Copy(), nil)
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
@@ -202,8 +166,8 @@ func BenchmarkSignHS256(b *testing.B) {
 }
 
 func BenchmarkSignHS384(b *testing.B) {
-	jwt, _ := New()
+	jwt, _ := New(0, nil, nil)
-	t := NewToken(claims.Copy(), NewHash(HS384Name))
+	t := NewToken(claims.Copy(), NewHS384())
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
 		jwt.Sign(t)
@@ -211,8 +175,8 @@ func BenchmarkSignHS384(b *testing.B) {
 }
 
 func BenchmarkSignHS512(b *testing.B) {
-	jwt, _ := New()
+	jwt, _ := New(0, nil, nil)
-	t := NewToken(claims.Copy(), NewHash(HS512Name))
+	t := NewToken(claims.Copy(), NewHS512())
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
 		jwt.Sign(t)
@@ -220,7 +184,7 @@ func BenchmarkSignHS512(b *testing.B) {
 }
 
 func BenchmarkVerifyHS256(b *testing.B) {
-	jwt, _ := New()
+	jwt, _ := New(0, nil, nil)
 	t := NewToken(claims.Copy(), nil)
 	jwt.Sign(t)
 	b.ReportAllocs()
@@ -230,8 +194,8 @@ func BenchmarkVerifyHS256(b *testing.B) {
 }
 
 func BenchmarkVerifyHS384(b *testing.B) {
-	jwt, _ := New()
+	jwt, _ := New(0, nil, nil)
-	t := NewToken(claims.Copy(), NewHash(HS384Name))
+	t := NewToken(claims.Copy(), NewHS384())
 	jwt.Sign(t)
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
@@ -240,8 +204,8 @@ func BenchmarkVerifyHS384(b *testing.B) {
 }
 
 func BenchmarkVerifyHS512(b *testing.B) {
-	jwt, _ := New()
+	jwt, _ := New(0, nil, nil)
-	t := NewToken(claims.Copy(), NewHash(HS512Name))
+	t := NewToken(claims.Copy(), NewHS512())
 	jwt.Sign(t)
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {

rand.go

@@ -1,11 +0,0 @@
-// Copyright (C) 2025 Marius Schellenberger
-
-package jwt
-
-import "crypto/rand"
-
-func key16() []byte {
-	b := make([]byte, 16)
-	rand.Read(b)
-	return b
-}

time.go

@@ -1,5 +1,3 @@
-// Copyright (C) 2025 Marius Schellenberger
-
 package jwt
 
 import "time"

token.go

@@ -1,8 +1,9 @@
-// Copyright (C) 2025 Marius Schellenberger
+// Copyright (C) 2018 Marius Schellenberger
 
 package jwt
 
 import (
+	"encoding/base64"
 	"encoding/json"
 	"strings"
 )
@@ -45,7 +46,7 @@ func NewToken(claims Claims, hash Hash) *Token {
 		claims = make(Claims)
 	}
 	if hash == nil {
-		hash = NewHash(HS256Name)
+		hash = NewHS256()
 	}
 	return &Token{
 		Header: Claims{
@@ -74,7 +75,7 @@ func DecodeToken(token string) (t *Token, err error) {
 		}
 	}
 	t = new(Token)
-	header, err := enc.DecodeString(parts[0])
+	header, err := base64.URLEncoding.DecodeString(parts[0])
 	if err != nil {
 		return
 	}
@@ -82,7 +83,7 @@ func DecodeToken(token string) (t *Token, err error) {
 	if err != nil {
 		return
 	}
-	claims, err := enc.DecodeString(parts[1])
+	claims, err := base64.URLEncoding.DecodeString(parts[1])
 	if err != nil {
 		return
 	}
@@ -90,7 +91,7 @@ func DecodeToken(token string) (t *Token, err error) {
 	if err != nil {
 		return
 	}
-	t.rawSignature, err = enc.DecodeString(parts[2])
+	t.rawSignature, err = base64.URLEncoding.DecodeString(parts[2])
 	t.signature = parts[2]
 	t.data = parts[0] + TokenSeparator + parts[1]
 	t.raw = token