1 files changed, 67 insertions, 0 deletions
diff --git a/g10/cipher-aead.c b/g10/cipher-aead.c
new file mode 100644
index 000000000..bf0afcfcb
--- /dev/null
+++ b/g10/cipher-aead.c
@@ -0,0 +1,67 @@
+/* cipher-aead.c - Enciphering filter for AEAD modes
+ * Copyright (C) 2018 Werner koch
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0+
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "gpg.h"
+#include "../common/status.h"
+#include "../common/iobuf.h"
+#include "../common/util.h"
+#include "filter.h"
+#include "packet.h"
+#include "options.h"
+#include "main.h"
+
+
+/*
+ * This filter is used to encipher data with an AEAD algorithm
+ */
+int
+cipher_filter_aead (void *opaque, int control,
+                   iobuf_t a, byte *buf, size_t *ret_len)
+{
+  cipher_filter_context_t *cfx = opaque;
+  size_t size = *ret_len;
+  int rc = 0;
+
+  if (control == IOBUFCTRL_UNDERFLOW) /* decrypt */
+    {
+      rc = -1; /* not yet used */
+    }
+  else if (control == IOBUFCTRL_FLUSH) /* encrypt */
+    {
+      log_assert (a);
+      rc = GPG_ERR_NOT_IMPLEMENTED;
+    }
+  else if (control == IOBUFCTRL_FREE)
+    {
+      gcry_cipher_close (cfx->cipher_hd);
+    }
+  else if (control == IOBUFCTRL_DESC)
+    {
+      mem2str (buf, "cipher_filter_aead", *ret_len);
+    }
+
+  return rc;
+}