Transaction origin and transaction salt in Account Abstraction

[NIC619]

What is wrong?

In account abstraction, now origin of the transaction(transaction.origin) is always the sender - ENTRY_POINT(0xffff…ffff) and it's meaningless in a contract's context. transaction.origin should probably be changed from transaction.sender to transaction.target or if origin of the transaction no longer holds significant meaning in account abstraction(e.g, it's just a contract that verifies signature, pays for gas and then forwards to another contract. A real account of a user may be composed of many contracts.) it probably can be removed.

Also I'm working on removing gas price from transaction format. As discussed in #326 , one option is to add salt to transaction format(perhaps adding salt for short term and transitioning to EIP232 transaction format for long term?).

How can it be fixed

• transaction origin
  • 1.1 change transaction origin from transaction.sender to transaction.target
  • 1.2 remove transaction origin
  • 1.3 ?
• salt
  • 2.1 add salt to transaction format
  • 2.2 EIP232 transaction format
  • 2.3 2.1 for short term and 2.2 for long term
  • 2.4 ?

[lrettig]

Linking #262 and #366 -- this will impact those.

[hwwhww]

close via #422