MULTIDEVICE-DEMO.md

Multi-device demonstration using Docker-Compose

The compose subdirectory contains a docker-compose.yml and sample scripts for simulating true distributed keygen on two separate systems.

1. On the Qrypt portal, register a free account and create a personal access token for keygen.
2. Export the token to your environment: export QRYPT_TOKEN="eyJhbGciOiJ......"
3. Bring up the "Alice" and "Bob" demonstration containers:

   git clone https://github.com/QryptInc/qrypt-security-quickstarts-cpp.git
   cd qrypt-security-quickstarts-cpp/compose
   QRYPT_TOKEN=$QRYPT_TOKEN docker-compose up -d
   

4. Enter the "Alice" container, generate a key, encrypt the sample text, and transfer the ciphertext + metadata to "Bob":

   # Enter Alice's container
   docker exec -it alice_container bash
   

   # OTP generation and encryption
   qrypt generate --token=$QRYPT_TOKEN --key-len=$(stat -c%s /workspace/files/sample.txt) --key-filename=key.dat
   qrypt encrypt --input-filename=/workspace/files/sample.txt --key-filename=key.dat --output-filename=ciphertext.dat
   

   # Send the OTP metadata and encrypted files to Bob
   sshpass -p "ubuntu" scp -o 'StrictHostKeyChecking no' meta.dat ciphertext.dat ubuntu@bob:/home/ubuntu
   

5. Enter the "Bob" container, replicate the key, decrypt the ciphertext, and compare the result with the original sample text:

   # Enter Bob's container
   docker exec -it bob_container bash
   

   # OTP replication and decryption
   qrypt replicate --token=$QRYPT_TOKEN --key-filename=key.dat
   qrypt decrypt --input-filename=ciphertext.dat --key-filename=key.dat --output-filename=decrypted.txt
   

   # Verify the OTP decrypted files
   cmp /workspace/files/sample.txt decrypted.txt