64 Commits

Author	SHA1	Message	Date
wborgeaud	e7edfdd6a3	Minor	2022-08-26 18:30:26 +02:00
wborgeaud	a1941308eb	Minor	2022-08-26 11:07:16 +02:00
wborgeaud	05c3c4d907	First pass	2022-08-26 10:12:45 +02:00
Daniel Lubarov	d0be79e822	Feedback	2022-08-25 23:35:38 -07:00
Daniel Lubarov	b829b44dcf	Fix test	2022-08-25 22:11:25 -07:00
Daniel Lubarov	aa87f2c3ba	Public memory	2022-08-25 20:19:18 -07:00
Daniel Lubarov	ff228c9386	Have witness generation take a partial trie instead of Merkle proofs	2022-08-24 20:43:49 -07:00
wborgeaud	ee979428f4	Start implementing context and segments in interpreter	2022-07-23 15:35:48 +02:00
Daniel Lubarov	b9b3c24cf9	PROVER_INPUT instruction	2022-07-19 06:55:23 -07:00
Daniel Lubarov	ef842b03c8	Address some feedback on #591	2022-07-17 08:23:40 -07:00
Daniel Lubarov	0802d6c021	Continue work on bootstrapping ... The kernel is hashed using a Keccak based sponge for now. We could switch to Poseidon later if our kernel grows too large. Note that we use simple zero-padding (pad0*) instead of the standard pad10* rule. It's simpler, and we don't care that the prover can add extra 0s at the end of the code. The program counter can never reach those bytes, and even if it could, they'd be 0 anyway given the EVM's zero-initialization rule. In one CPU row, we can do a whole Keccak hash (via the CTL), absorbing 136 bytes. But we can't actually bootstrap that many bytes of kernel code in one row, because we're also limited by memory bandwidth. Currently we can write 4 bytes of the kernel to memory in one row. So we treat the `keccak_input_limbs` columns as a buffer. We gradually fill up this buffer, 4 bytes (one `u32` word) at a time. Every `136 / 4 = 34` rows, the buffer will be full, so at that point we activate the Keccak CTL to absorb the buffer.	2022-07-14 11:59:01 -07:00
Daniel Lubarov	10c31b7036	feedback	2022-07-12 14:33:10 -07:00
Daniel Lubarov	5d74a19ad6	Add test (won't work for a while, but to illustrate)	2022-07-04 18:10:03 -07:00
Daniel Lubarov	e7b480deaf	Begin work on witness generation and kernel bootstrapping	2022-07-01 10:09:57 -07:00