New upstream version 3.1.1

include/header_encryption.h

@@ -0,0 +1,35 @@
+/**
+ * (C) 2007-22 - ntop.org and contributors
+ *
+ * This program 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.
+ *
+ * This program 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 see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+int packet_header_decrypt (uint8_t packet[], uint16_t packet_len,
+                           char *community_name,
+                           he_context_t *ctx, he_context_t *ctx_iv,
+                           uint64_t *stamp);
+
+int packet_header_encrypt (uint8_t packet[], uint16_t header_len, uint16_t packet_len,
+                           he_context_t *ctx, he_context_t *ctx_iv,
+                           uint64_t stamp);
+
+void packet_header_setup_key (const char *community_name,
+                              he_context_t **ctx_static, he_context_t **ctx_dynamic,
+                              he_context_t **ctx_iv_static, he_context_t **ctx_iv_dynamic);
+
+void packet_header_change_dynamic_key (uint8_t *key_dynamic,
+                                       he_context_t **ctx_dynamic,
+                                       he_context_t **ctx_iv_dynamic);