From 8afa43fc13231c29aa31235139bb7b5b06311975 Mon Sep 17 00:00:00 2001
From: Tom D <40675700+twitchy-jsonp@users.noreply.github.com>
Date: Wed, 12 Jun 2019 10:11:18 -0700
Subject: [PATCH] Better error messages for parseCert() (#39)

---
 attest/tpm.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/attest/tpm.go b/attest/tpm.go
index 5eedbbb..52e8561 100644
--- a/attest/tpm.go
+++ b/attest/tpm.go
@@ -153,11 +153,11 @@ func parseCert(ekCert []byte) (*x509.Certificate, error) {
 		Raw asn1.RawContent
 	}
 	if _, err := asn1.Unmarshal(ekCert, &cert); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("asn1.Unmarshal() failed: %v", err)
 	}
 	c, err := x509.ParseCertificate(cert.Raw)
 	if err != nil && x509.IsFatal(err) {
-		return nil, err
+		return nil, fmt.Errorf("x509.ParseCertificate() failed: %v", err)
 	}
 	return c, nil
 }