Communication infrastructure information security

Implement a communication infrastructure that uses AES to encrypt the traffic between two nodes A and B with the next characteristics. Lets consider a nod KM(key manager) that has three keys:K1,K2 and K3. K1 is linked with the CBC operating mode. K2 is linked with the OFB operating mode.K3 is used for encrypting the keys K1 and K2. K3 is owned from the start by node A.
In order to initialize a secured sesion of comunication, node A sends a mesage to node B where it tells the operating mode(CBC or OFB) and asks node KM for the communication key in the same way.
The wanted key (K1 or K2) is encrypted as a single AES block by KM using the key K3 and it is sent back as an answer to node A,that will sent forward to node B toghether with K3 the wanted key.
A and B will decrypt the key (K1 or K2) at receving in order to start the comunication.After the keys are sent to B, node A starts to send to node B the content of a file encrypted on blocks using the selected mode(OFB or CBC).
Also, I need a short documentation for implementation, where you will describe
an access control model according to the key exchange executed, where KM,A and B are the subjects and the three keys the objects and .also, I need a file with minimal details about compilation and running the program and a description of the operating mode of access asked in the project.
About the recuiter
Member since May 20, 2018
Chandradeep G
from Tuamotu, French Polynesia

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