updated vendor

vendor/github.com/ProtonMail/go-crypto/openpgp/internal/ecc/curve25519.go

@@ -125,7 +125,10 @@ func (c *curve25519) Encaps(rand io.Reader, point []byte) (ephemeral, sharedSecr
 	//	"VB = convert point V to the octet string"
 	// sharedPoint corresponds to `VB`.
 	var sharedPoint x25519lib.Key
-	x25519lib.Shared(&sharedPoint, &ephemeralPrivate, &pubKey)
+	ok := x25519lib.Shared(&sharedPoint, &ephemeralPrivate, &pubKey)
+	if !ok {
+		return nil, nil, errors.KeyInvalidError("ecc: the public key is a low order point")
+	}
 
 	return ephemeralPublic[:], sharedPoint[:], nil
 }
@@ -146,7 +149,10 @@ func (c *curve25519) Decaps(vsG, secret []byte) (sharedSecret []byte, err error)
 	// RFC6637 §8: "Note that the recipient obtains the shared secret by calculating
 	//   S = rV = rvG, where (r,R) is the recipient's key pair."
 	// sharedPoint corresponds to `S`.
-	x25519lib.Shared(&sharedPoint, &decodedPrivate, &ephemeralPublic)
+	ok := x25519lib.Shared(&sharedPoint, &decodedPrivate, &ephemeralPublic)
+	if !ok {
+		return nil, errors.KeyInvalidError("ecc: the public key is a low order point")
+	}
 
 	return sharedPoint[:], nil
 }

vendor/github.com/ProtonMail/go-crypto/openpgp/internal/ecc/generic.go

@@ -78,7 +78,7 @@ func (c *genericCurve) GenerateECDSA(rand io.Reader) (x, y, secret *big.Int, err
 func (c *genericCurve) Encaps(rand io.Reader, point []byte) (ephemeral, sharedSecret []byte, err error) {
 	xP, yP := elliptic.Unmarshal(c.Curve, point)
 	if xP == nil {
-		panic("invalid point")
+		return nil, nil, errors.KeyInvalidError(fmt.Sprintf("ecc (%s): invalid point", c.Curve.Params().Name))
 	}
 
 	d, x, y, err := elliptic.GenerateKey(c.Curve, rand)
@@ -99,6 +99,9 @@ func (c *genericCurve) Encaps(rand io.Reader, point []byte) (ephemeral, sharedSe
 
 func (c *genericCurve) Decaps(ephemeral, secret []byte) (sharedSecret []byte, err error) {
 	x, y := elliptic.Unmarshal(c.Curve, ephemeral)
+	if x == nil {
+		return nil, errors.KeyInvalidError(fmt.Sprintf("ecc (%s): invalid point", c.Curve.Params().Name))
+	}
 	zbBig, _ := c.Curve.ScalarMult(x, y, secret)
 	byteLen := (c.Curve.Params().BitSize + 7) >> 3
 	zb := make([]byte, byteLen)