Improve startup debug output

The startup debug output was very verbose but still missing some
effective crypto settings.

2 files changed, 19 insertions, 0 deletions

diff --git a/internal/contentenc/content.go b/internal/contentenc/content.go
index 747bb4c..e023492 100644
--- a/internal/contentenc/content.go
+++ b/internal/contentenc/content.go
@@ -73,6 +73,9 @@ type ContentEnc struct {
 
 // New returns an initialized ContentEnc instance.
 func New(cc *cryptocore.CryptoCore, plainBS uint64, forceDecode bool) *ContentEnc {
+	tlog.Debug.Printf("contentenc.New: plainBS=%d, forceDecode=%v",
+		plainBS, forceDecode)
+
 	if fuse.MAX_KERNEL_WRITE%plainBS != 0 {
 		log.Panicf("unaligned MAX_KERNEL_WRITE=%d", fuse.MAX_KERNEL_WRITE)
 	}
diff --git a/internal/cryptocore/cryptocore.go b/internal/cryptocore/cryptocore.go
index d66f390..9f5b9bd 100644
--- a/internal/cryptocore/cryptocore.go
+++ b/internal/cryptocore/cryptocore.go
@@ -36,6 +36,19 @@ const (
 	BackendAESSIV AEADTypeEnum = 5
 )
 
+func (a AEADTypeEnum) String() string {
+	switch a {
+	case BackendOpenSSL:
+		return "BackendOpenSSL"
+	case BackendGoGCM:
+		return "BackendGoGCM"
+	case BackendAESSIV:
+		return "BackendAESSIV"
+	default:
+		return fmt.Sprintf("%d", a)
+	}
+}
+
 // CryptoCore is the low level crypto implementation.
 type CryptoCore struct {
 	// EME is used for filename encryption.
@@ -58,6 +71,9 @@ type CryptoCore struct {
 // Note: "key" is either the scrypt hash of the password (when decrypting
 // a config file) or the masterkey (when finally mounting the filesystem).
 func New(key []byte, aeadType AEADTypeEnum, IVBitLen int, useHKDF bool, forceDecode bool) *CryptoCore {
+	tlog.Debug.Printf("cryptocore.New: key=%d bytes, aeadType=%v, IVBitLen=%d, useHKDF=%v, forceDecode=%v",
+		len(key), aeadType, IVBitLen, useHKDF, forceDecode)
+
 	if len(key) != KeyLen {
 		log.Panic(fmt.Sprintf("Unsupported key length %d", len(key)))
 	}