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jweHS256.go
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jweHS256.go
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package jwt
import (
"github.com/cockroachdb/errors"
"github.com/go-jose/go-jose/v3"
"github.com/justdomepaul/toolbox/config"
"os"
"time"
)
// NewEHS256JWT method
func NewEHS256JWT(hmacSecretKey string) (*EHS256JWT, error) {
sig, err := newSigner(
jose.SigningKey{Algorithm: jose.HS256, Key: []byte(hmacSecretKey)},
(&jose.SignerOptions{}).WithType("JWT"),
)
if err != nil {
return nil, err
}
enc, err := newEncrypter(
jose.A128CBC_HS256,
jose.Recipient{Algorithm: jose.PBES2_HS256_A128KW, Key: []byte(hmacSecretKey)},
(&jose.EncrypterOptions{}).WithType("JWT").WithContentType("JWT"),
)
if err != nil {
return nil, err
}
return &EHS256JWT{
SigningKey: []byte(hmacSecretKey),
Sig: sig,
Enc: enc,
}, nil
}
func NewEHS256JWTFromOptions(option config.JWT) (*EHS256JWT, error) {
if option.HmacSecretKeyPath == "" && option.HmacSecretKey == "" {
return nil, ErrNoKey
}
key := option.HmacSecretKey
if option.HmacSecretKeyPath != "" {
if result, err := os.ReadFile(option.HmacSecretKeyPath); err != nil {
return nil, err
} else {
key = string(result)
}
}
return NewEHS256JWT(key)
}
// EHS256JWT type
type EHS256JWT struct {
SigningKey []byte
Sig jose.Signer
Enc jose.Encrypter
}
// GenerateToken method
func (eh EHS256JWT) GenerateToken(claims IJWTClaims) (token string, err error) {
return signedAndEncrypted(eh.Sig, eh.Enc).Claims(claims).CompactSerialize()
}
// Validate method
func (eh EHS256JWT) Validate(raw string) error {
tok, err := parseSignedAndEncrypted(raw)
if err != nil {
return err
}
_, errDecrypt := tok.Decrypt(eh.SigningKey)
if errDecrypt != nil {
return errDecrypt
}
return nil
}
// VerifyToken method
func (eh EHS256JWT) VerifyToken(token string, claims IJWTClaims) (err error) {
return parseEHSRaw(eh.SigningKey, token, claims)
}
// RefreshToken method
func (eh EHS256JWT) RefreshToken(token string, claims IJWTClaims, duration time.Duration) (string, error) {
errParse := parseEHSRaw(eh.SigningKey, token, claims)
if errParse != nil && errParse != ErrTokenExpired {
return "", errParse
}
if errors.Is(errParse, ErrTokenExpired) {
claims.(IJWTExpire).ExpiresAfter(duration)
return signedAndEncrypted(eh.Sig, eh.Enc).Claims(claims).CompactSerialize()
}
return token, nil
}