Fix x25519 thumbprint

smallstep · Jan 4, 2022 · cfaa65f · cfaa65f
1 parent 74b0c4b
commit cfaa65f
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/jose/generate.go b/jose/generate.go
@@ -41,7 +41,10 @@ func Thumbprint(jwk *JSONWebKey) (string, error) {
 	case x25519.PublicKey:
 		sum, err = x25519Thumbprint(key, crypto.SHA256)
 	case x25519.PrivateKey:
-		sum, err = x25519Thumbprint(key.Public(), crypto.SHA256)
+		var pub x25519.PublicKey
+		if pub, err = key.PublicKey(); err == nil {
+			sum, err = x25519Thumbprint(pub, crypto.SHA256)
+		}
 	default:
 		sum, err = jwk.Thumbprint(crypto.SHA256)
 	}