Cryptology Homework

Features

• Authenticating ( pbkdf2 & sha512 )
• E2E encrypted messaging between users ( ECDH-AES-256-GCM )
• Watermark images inside of text
• Challenge login ( Steps described in here #2 (comment) )

Installation

Project needs node.js runtime. Download from https://nodejs.org/en/download/

Or browse & run in browser via repl.it

Clone latest code:

git clone git@github.com:cagataycali/cryptology-homework.git

Install third party packages:

npm install

Run

npm start

Test users:

• username : password
• cagatay : s3cur3P@ss # Favorite pet name is "boncuk".
• test : s3cur3P@ss2 # Favorite color is "red".
• naive : s3cur3P@ss2 # Grandma name "eve".
• badguy : s3cur3P@ss2 # Mother's hometown is "İstanbul" (Starts with upper)

If you don't have a user, when first login attempt you will be registered.

random analysis, hash checks, integrity analysis can be tested with node test.js