Account
A zkopru account manages both of the layer-1 and layer-2 key pairs. First of all, the account has an Ethereum account from a randomly generated private key. This is used for interactions on the layer-1. Second, Zkopru wallet creates a Babyjubjub private key and public key set from the Ethereum account's private key. This Babyjubjub keyset is used for the EdDSA and encrypted memo field on the layer-2.
Key | Size | How to get | Where to use |
Master seed | 32 byte | Randomly generated | Recover keys |
Ethereum private key | 32 byte | Derived from master seed with BIP39 | Layer1 ECDSA |
Ethereum public address | 20 byte | Derived from the private key | Layer 1 interactions |
Babyjubjub private key | 254 bit | Derived from Ethereum private key | Create EdDSA to spend UTXO |
Babyjubjub public key | (254 bit, 254 bit) | Derived from Babyjubjub private key | Proving ownership of a UTXO |
​