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forgejo/vendor/github.com/golang-jwt/jwt/ed25519.go
zeripath 35735bbef9
Upgrade to golang-jwt 3.2.2 (#16590)
* Upgrade to golang-jwt 3.2.2

Upgrade to the latest version of golang-jwt

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Forcibly replace the 3.2.1 version of golang-jwt/jwt and increase minimum Go version

Using go.mod we can forcibly replace the 3.2.1 version used by goth to 3.2.2.

Further given golang-jwt/jwts stated policy of only supporting supported go versions
we should just raise our minimal version of go to 1.16 for 1.16 as by time of release
1.15 will be out of support.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* update minimal go required

Signed-off-by: Andrew Thornton <art27@cantab.net>

* update config.yaml

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: 6543 <6543@obermui.de>
2021-08-03 14:32:01 -04:00

81 lines
1.9 KiB
Go
Vendored

package jwt
import (
"errors"
"crypto/ed25519"
)
var (
ErrEd25519Verification = errors.New("ed25519: verification error")
)
// Implements the EdDSA family
// Expects ed25519.PrivateKey for signing and ed25519.PublicKey for verification
type SigningMethodEd25519 struct{}
// Specific instance for EdDSA
var (
SigningMethodEdDSA *SigningMethodEd25519
)
func init() {
SigningMethodEdDSA = &SigningMethodEd25519{}
RegisterSigningMethod(SigningMethodEdDSA.Alg(), func() SigningMethod {
return SigningMethodEdDSA
})
}
func (m *SigningMethodEd25519) Alg() string {
return "EdDSA"
}
// Implements the Verify method from SigningMethod
// For this verify method, key must be an ed25519.PublicKey
func (m *SigningMethodEd25519) Verify(signingString, signature string, key interface{}) error {
var err error
var ed25519Key ed25519.PublicKey
var ok bool
if ed25519Key, ok = key.(ed25519.PublicKey); !ok {
return ErrInvalidKeyType
}
if len(ed25519Key) != ed25519.PublicKeySize {
return ErrInvalidKey
}
// Decode the signature
var sig []byte
if sig, err = DecodeSegment(signature); err != nil {
return err
}
// Verify the signature
if !ed25519.Verify(ed25519Key, []byte(signingString), sig) {
return ErrEd25519Verification
}
return nil
}
// Implements the Sign method from SigningMethod
// For this signing method, key must be an ed25519.PrivateKey
func (m *SigningMethodEd25519) Sign(signingString string, key interface{}) (string, error) {
var ed25519Key ed25519.PrivateKey
var ok bool
if ed25519Key, ok = key.(ed25519.PrivateKey); !ok {
return "", ErrInvalidKeyType
}
// ed25519.Sign panics if private key not equal to ed25519.PrivateKeySize
// this allows to avoid recover usage
if len(ed25519Key) != ed25519.PrivateKeySize {
return "", ErrInvalidKey
}
// Sign the string and return the encoded result
sig := ed25519.Sign(ed25519Key, []byte(signingString))
return EncodeSegment(sig), nil
}