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b05fe4aa64
Keeper is a zmvm guest program that runs the block transition. It relies on the zkvm maker implementing `getInput`. For now, we only provide a single implementation for the 'ziren' VM. Why keeper? In the _Mass Effect_ lore, the keepers are animals (?) who maintain the citadel. Nothing is known from them, and attempts at tampering with them have failed, as they self-destruct upon inquiry. They have a secret, nefarious purpose that is only revealed later in the game series, don't want any spoilers so I didn't dig deeper. All in all, a good metaphor for zkvms. --------- Co-authored-by: weilzkm <140377101+weilzkm@users.noreply.github.com> Co-authored-by: Felix Lange <fjl@twurst.com>
102 lines
3.1 KiB
Go
102 lines
3.1 KiB
Go
// Copyright 2025 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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//go:build example
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package main
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import (
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_ "embed"
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"fmt"
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"os"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/core/stateless"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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)
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// ExtWitness is a witness RLP encoding for transferring across clients.
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// This is taken from PR #32216 until it's merged.
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// It contains block headers, contract codes, state nodes, and storage keys
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// required for stateless execution verification.
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type ExtWitness struct {
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Headers []*types.Header `json:"headers"`
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Codes []hexutil.Bytes `json:"codes"`
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State []hexutil.Bytes `json:"state"`
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Keys []hexutil.Bytes `json:"keys"`
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}
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// This is taken from PR #32216 until it's merged
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// fromExtWitness converts the consensus witness format into our internal one.
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func fromExtWitness(ext *ExtWitness) (*stateless.Witness, error) {
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w := &stateless.Witness{}
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w.Headers = ext.Headers
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w.Codes = make(map[string]struct{}, len(ext.Codes))
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for _, code := range ext.Codes {
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w.Codes[string(code)] = struct{}{}
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}
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w.State = make(map[string]struct{}, len(ext.State))
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for _, node := range ext.State {
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w.State[string(node)] = struct{}{}
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}
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return w, nil
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}
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//go:embed 1192c3_witness.rlp
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var witnessRlp []byte
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//go:embed 1192c3_block.rlp
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var blockRlp []byte
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// getInput is a platform-specific function that will recover the input payload
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// and returns it as a slice. It is expected to be an RLP-encoded Payload structure
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// that contains the witness and the block.
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// This is a demo version, that is intended to run on a regular computer, so what
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// it does is embed a small Hoodi block, encodes the Payload structure containing
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// the block and its witness as RLP, and returns the encoding.
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func getInput() []byte {
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var block types.Block
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err := rlp.DecodeBytes(blockRlp, &block)
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if err != nil {
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panic(err)
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}
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var extwitness ExtWitness
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err = rlp.DecodeBytes(witnessRlp, &extwitness)
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if err != nil {
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panic(err)
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}
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witness, err := fromExtWitness(&extwitness)
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if err != nil {
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panic(err)
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}
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payload := Payload{
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ChainID: params.HoodiChainConfig.ChainID.Uint64(),
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Block: &block,
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Witness: witness,
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}
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encoded, err := rlp.EncodeToBytes(payload)
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if err != nil {
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fmt.Fprintf(os.Stderr, "failed to encode payload: %v\n", err)
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os.Exit(20)
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}
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return encoded
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}
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