Deadline 09.10.2019 8:00

1. Generate chain of certificates root CA, sub-ordinate CA (sub-ordinate CA signed by root CA) and end-user cert.  [3]
2. Verify (extract signature, extract cert body and verify) signature of root CA. [3]
3. Write simple program in C programming language and generate random (try to generate random key of highest quality) key K.bin and encrypt and decrypt arbitrary message(of at least 100 characters) with AES128.[4]

4. Describe entire process and all commands you used in Desc_XXXX.txt. 
The format of Desc_XXXX should be as follows:

openssl ...



#comments  
Add here short comments. 

Archive all files and upload it as a single file XXXX.zip (XXXX stands for your UCO) to IS Assignement02 vault.  



Describe entire process, commands you used in Desc_xxxx.txt (xxxx stands
for your UCO). Archive all required files (so it can be opened in Windows 
10 without installation of additional SW) and submit it as a single file into
IS.