Rmdir: handle creating and removing unreadable directories

This patch also splits off Mkdir and Rmdir into its own file.

Fixes issue #8, thanks to @diseq for the bug report.

1 files changed, 7 insertions, 0 deletions

diff --git a/cryptfs/nonce.go b/cryptfs/nonce.go
index 9bdbb09..a122ea5 100644
--- a/cryptfs/nonce.go
+++ b/cryptfs/nonce.go
@@ -1,6 +1,7 @@
 package cryptfs
 
 import (
+	"encoding/binary"
 	"bytes"
 	"crypto/rand"
 	"encoding/hex"
@@ -17,6 +18,12 @@ func RandBytes(n int) []byte {
 	return b
 }
 
+// Return a secure random uint64
+func RandUint64() uint64 {
+	b := RandBytes(8)
+	return binary.BigEndian.Uint64(b)
+}
+
 var gcmNonce nonce96
 
 type nonce96 struct {