Generate a new PublicKey

[Okhotnik-V]

I propose to create the function for creating new keys for AddKeyAction

[Ctzzhang]

I want to get a function, whiich can create an account by accountid and return the public key and private key.

[AB3rtz]

One of the modules (crypto-keys) used in this project has the necessary helpers to generate both random public and secret keys as well as deterministic ones generated form a given seed which can be derived from mnemonics. That being said, the creation fo account given an account ID is also implemented here AccountServiceTest. the procedure is different if one is creating an implicit account, a sub account or a named account. Does this answer your questions?