CHIA-255: implement CHIP-34

arvidn commented 2 months ago

this PR is best reviewed one commit at a time.

It implements CHIP-34.

new operators

There are 3 new operators enabled under softfork 1:

operator	base cost	per argument	per byte
`base64url_encode`	40	130	2
`base64url_decode`	400	-	2
`keccak256`	50	160	2

As always, there's also a cost of 10 per byte that's allocated for the return value.

Since this is a softfork, the extension will only be available when the ENABLE_BASE64 flag is set, which it will be after the softfork activates.

The operators will only be available for programs (<prg>) executing under (softfork <cost> 1 <prg> <arg>)

There's an option to hard-fork these operators out of the softfork-guard by specifying ENABLE_BASE64_OPS_OUTSIDE_GUARD.

The test vectors are generated using the python wheel from eth_hash.auto import keccak.

coveralls-official[bot] commented 2 months ago

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/base64_ops.rs	61	62	98.39%
src/chia_dialect.rs	7	8	87.5%
<!--	Total:	90	92	97.83%	-->

arvidn commented 2 weeks ago

these features were cancelled.