DH implemented in c

[prprhyt]

Resolves Issue #28

Description

Implemented Diffie-hellman key exchange algorithm in C

Screenshots (if required)

How to run

Build

$ gcc c.c

Run

$ ./a.out

Checklist

• [x] Code compiles correctly.
• [x] Changes are tested properly.
• [x] Added the README / documentation, if necessary.
• [x] Followed the Contributing guidelines.
• [x] Resolved merge conflicts, if any.

[prprhyt]

I checked again.