Game master signature workflow

[peersky]

• Whenever player joins the game jointSecret & Signature is sent from CVPP node API
• Game master sends signature, signaling that jointSecret was issued to address
• Player submits this signature together with his join game transaction
• Whenever player submits a vote/proposal (actionData) they
  • submit
    • hash(encrypt(actionData)+jointSecret) to game master
    • encrypt(actionData)
  • Node returns back signature of that hash IF data validation passes
  • Submit transaction with CVPP server signature and encrypted actionData+jointSecret
• endTurn stage Game Master submits
  • New jointSecrets encrypted with participant pubKeys
  • jointSecrets publicly allowing anyone to decode data
  • Contract verifies actionData integrity against stored hash(encrypt(actionData)+jointSecret)