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--- mywiki:linux:ipsec [2015/12/16 15:24] – [Kernel Terms] super
+++ mywiki:linux:ipsec [2019/09/15 18:55] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 **IPSec Implementation in Linux**
+| Reference | {{:mywiki:linux:chapter10_ipsec.pdf| ipsec_xfrm }} |
 ====== IPSEC Basic ======
@@ Line 39: / Line 41: @@
 ===== Kernel Terms =====
-| aalg | Authentication algo pointer |
+| aalg | **Authentication** algo pointer |
-| ealg | Encryption algo pointer |
+| ealg | **Encryption** algo pointer |
-| calg |
+| calg | **Compression** algo pointer |
-| aead | Authentication Encryption with Associated Data pointer | Note: if (aead == NULL); then only authentication without any encryption |
+| aead | **Authentication Encryption** with Associated Data pointer | Note: if (aead == NULL); then only authentication without any encryption |
+| encap | Data for **encapsulator**, ie, for **special UDP** Encapsulation only | draft-ietf-ipsec-udp-encaps-06 |
@@ Line 239: / Line 242: @@
 | xfrm_state_lookup() | SAD lookup based on spi |
+===== IPSec SA initialize =====
+It is initialized by API: **static int esp_init_state(struct xfrm_state *x)**, which is defined in file:
+  * net/ipv4/esp4.c
+  * net/ipv6/esp6.c
 ===== IPSec Tx steps =====
 <file>