1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/seppl_protocol.h b/kernel/seppl_protocol.h
new file mode 100644
index 0000000..08d4fa6
--- /dev/null
+++ b/kernel/seppl_protocol.h
@@ -0,0 +1,27 @@
+#ifndef _SEPPL_H
+#define _SEPPL_H
+
+#define SEPPL_PROTOCOL 177
+
+// Packet layout:
+// 1. IP-Header                             PLAIN
+// 2. Uncrypted header                      PLAIN
+// 3. iv                                    PLAIN
+// 4. Crypted header                        CRYPTED
+// 5. Payload (with TCP/UDP/...-Header)     CRYPTED
+// 6. Padding                               CRYPTED
+
+struct seppl_uncrypt_hdr {
+    uint8_t algorithm;
+    char key_name[7];
+} __attribute__((packed)) uncrypt_hdr;
+
+struct seppl_crypt_hdr{
+    uint8_t ident; // 0x00
+    uint8_t saved_protocol;
+    uint16_t saved_tot_len;
+    uint16_t saved_frag_off;
+} __attribute__((packed)) crypt_hdr;
+
+
+#endif