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-rw-r--r--doc/apps/enc.pod4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/apps/enc.pod b/doc/apps/enc.pod
index 3dee4ed992..629611d137 100644
--- a/doc/apps/enc.pod
+++ b/doc/apps/enc.pod
@@ -326,4 +326,8 @@ The B<enc> program only supports a fixed number of algorithms with
certain parameters. So if, for example, you want to use RC2 with a
76 bit key or RC4 with an 84 bit key you can't use this program.
+The B<enc> program does not support authenticated encryption modes
+like CCM and GCM. The utility does not store or retrieve the
+authentication tag.
+
=cut