Escrow - send to non-members with valid ID code

[kaarmann]

1. New call GET /escrow/{idCode}
   returns address, e.g 0x67a8b88e...

   • verify that the idCode hasn't yet been approved
   • verify with LdapService that it is a valid ID code
   • if idCode is already present in local database, then return it. ADD-ON: also check if the eth address has been approved on chain. ADD-ON-2: should actually generate new key every time for privacy.
   • generate privKey, pubKey, address
   • store all three, encrypt(privKey) with a password stored on file system
   • approve on chain, mark as escrow in EthereumAccount domain object
   • return response with address and approval transactionHash

2. Update call POST /authenticate/...

   • after approval check if this idCode has escrow accounts that have positive balance
   • create transfer(s) from the escrow account(s) to the new account
   • copy over original references from the escrow transfers to new
   • add a new field to response to return an array, e.g escrow: [ {amount_1, txHash_1}, {amount_2, txHash_2}]

3. Update call GET /account/{idCode}

   • add an AuthorisationType.escrow to ethereum account

4. New call GET /escrow/statistics

   • return some stats, like { balance: 203, idCodes: 32, addresses: 82 }

5. Client

   • wait until the escrow creation is mined before push send
   • refresh keys / to show new balance after approval

Challenges

• sending it twice through wallet-server will charge fees twice... So if I send 1.00EUR to escrow, the person eventuallly receives 0.99 EUR.