-#
+# 01
```shell
```
-#
+# 02
```shell
```
-#
+# 03
+
+```shell
+
+./certs.sh
+
+```
+
+# 04
```shell
sudo ip netns exec net2 openssl s_server -port 9999 -cert ./certs/server.pem -key ./certs/server_priv.pem -cipher AES256-SHA256:@SECLEVEL=0 -tls1_2
sudo ip netns exec net1 openssl s_client -connect 192.168.64.6:9999 -CAfile ./certs/ca.pem -cipher AES256-SHA256:@SECLEVEL=0 -tls1_2
```
-#
+# 05
```shell
...
...
```
-#
+# 06
```c
```
-#
+# 07
```c
int dec_len = RSA_private_decrypt(
```
-#
+# 08
```shell
# https://datatracker.ietf.org/doc/html/rfc5246
```
-#
+# 09
```c
/*
*/
```
-#
+# 10
```shell
```
-#
+# 11
```shell
# https://datatracker.ietf.org/doc/html/rfc7627
...
```
-#
+# 12
```shell
# https://datatracker.ietf.org/doc/html/rfc7366
```
-#
+# 13
```shell
```
-#
+# 14
```shell
```
-#
+# 15
```shell
0070 - 05 5f 50 8c ee 01 9b ac-31 58 dc c3 d6 a7 05 66 ._P.....1X.....f
```
-#
+# 16
```shell
packet RX: 17
dst mac: 1a:fe:a2:8e:77:09