ceph: aes crypto and base64 encode/decode helpers

Helpers to encrypt/decrypt AES and base64.

Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/Makefile b/fs/ceph/Makefile
index 47caf2f..85a588e 100644
--- a/fs/ceph/Makefile
+++ b/fs/ceph/Makefile
@@ -14,6 +14,7 @@
 	osd_client.o osdmap.o crush/crush.o crush/mapper.o crush/hash.o \
 	debugfs.o \
 	auth.o auth_none.o \
+	crypto.o armor.o \
 	ceph_fs.o ceph_strings.o ceph_hash.o ceph_frag.o
 
 else