Wallet design

The wallet is a database of 256bit key -> 256bit value pairs. The primary wallet is stored inside the node's database and backup copies are written to a directory "backup".

Special Pairs:

0 -> Version number
1 -> Encrypted wallet key
2 -> Wallet salt
3 -> Check key
4 -> Wallet representative

Wallet accounts

pub(i) -> encrypt_aes_ctr (wallet_key, prv(i), salt)

Details:

Wallet Key: A 256 random number that's to encrypt all key entries in the database.
Salt: A random 256 bit value used generate uniqueness in wallets with identical passwords
Encrypt_AES_CTR: A function using the AES encryption algorithm in CTR mode

The wallet key is encrypted by passing the password through the Argon2 key derivation function.

All pairs besides the special pairs and key/value pairs mapping the public key a.k.a. account number, to the encrypted private key.