X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/secnet/blobdiff_plain/31dd07884afd1f1d87d398bf344e1ba3a71e293b..34afe8d7b8a75eddd44cccb8e6d8d35fa17a47d9:/secnet.h

diff --git a/secnet.h b/secnet.h
index 21b94c0..e253a14 100644
--- a/secnet.h
+++ b/secnet.h
@@ -548,12 +548,15 @@ typedef enum {
     transform_apply_ok       = 0, /* all is well (everyone may assume==0) */
     transform_apply_err      = 1, /* any other problem */
     transform_apply_seqrange = 2,
-        /* message decrypted but sequence number was out of range */
+        /* message decrypted but sequence number was out of recent range */
+    transform_apply_seqdupe  = 3,
+        /* message decrypted but was dupe of recent packet */
 } transform_apply_return;
 
 static inline bool_t
 transform_apply_return_badseq(transform_apply_return problem) {
-    return problem == transform_apply_seqrange;
+    return problem == transform_apply_seqrange ||
+	   problem == transform_apply_seqdupe;
 }
 
 typedef transform_apply_return transform_apply_fn(void *st,