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move ziren keccak state definition to the main ziren file

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This commit is contained in:
Guillaume Ballet 2025-10-23 08:14:47 +02:00
parent a68df152f1
commit 932fe23501
2 changed files with 60 additions and 83 deletions
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60
crypto/keccak_ziren.go
View file

@ -23,6 +23,66 @@ import (
"github.com/ethereum/go-ethereum/common"
)
// zirenKeccakState implements the KeccakState interface using the Ziren zkvm_runtime.
// It accumulates data written to it and uses the zkvm's Keccak256 system call for hashing.
type zirenKeccakState struct {
buf []byte // accumulated data
result []byte // cached result
dirty bool // whether new data has been written since last hash
}
func newZirenKeccakState() KeccakState {
return &zirenKeccakState{
buf: make([]byte, 0, 512), // pre-allocate reasonable capacity
}
}
func (s *zirenKeccakState) Write(p []byte) (n int, err error) {
s.buf = append(s.buf, p...)
s.dirty = true
return len(p), nil
}
func (s *zirenKeccakState) Sum(b []byte) []byte {
s.computeHashIfNeeded()
return append(b, s.result...)
}
func (s *zirenKeccakState) Reset() {
s.buf = s.buf[:0]
s.result = nil
s.dirty = false
}
func (s *zirenKeccakState) Size() int {
return 32
}
func (s *zirenKeccakState) BlockSize() int {
return 136 // Keccak256 rate
}
func (s *zirenKeccakState) Read(p []byte) (n int, err error) {
s.computeHashIfNeeded()
if len(p) == 0 {
return 0, nil
}
// After computeHashIfNeeded(), s.result is always a 32-byte slice
n = copy(p, s.result)
return n, nil
}
func (s *zirenKeccakState) computeHashIfNeeded() {
if s.dirty || s.result == nil {
// Use the zkvm_runtime Keccak256 which uses SyscallKeccakSponge
hashArray := zkvm_runtime.Keccak256(s.buf)
s.result = hashArray[:]
s.dirty = false
}
}
// NewKeccakState creates a new KeccakState
// This uses a Ziren-optimized implementation that leverages the zkvm_runtime.Keccak256 system call.
func NewKeccakState() KeccakState {

83
crypto/keccak_ziren_state.go
View file

@ -1,83 +0,0 @@
// Copyright 2025 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
//go:build ziren
package crypto
import (
"github.com/ProjectZKM/Ziren/crates/go-runtime/zkvm_runtime"
)
// zirenKeccakState implements the KeccakState interface using the Ziren zkvm_runtime.
// It accumulates data written to it and uses the zkvm's Keccak256 system call for hashing.
type zirenKeccakState struct {
buf []byte // accumulated data
result []byte // cached result
dirty bool // whether new data has been written since last hash
}
func newZirenKeccakState() KeccakState {
return &zirenKeccakState{
buf: make([]byte, 0, 512), // pre-allocate reasonable capacity
}
}
func (s *zirenKeccakState) Write(p []byte) (n int, err error) {
s.buf = append(s.buf, p...)
s.dirty = true
return len(p), nil
}
func (s *zirenKeccakState) Sum(b []byte) []byte {
s.computeHashIfNeeded()
return append(b, s.result...)
}
func (s *zirenKeccakState) Reset() {
s.buf = s.buf[:0]
s.result = nil
s.dirty = false
}
func (s *zirenKeccakState) Size() int {
return 32
}
func (s *zirenKeccakState) BlockSize() int {
return 136 // Keccak256 rate
}
func (s *zirenKeccakState) Read(p []byte) (n int, err error) {
s.computeHashIfNeeded()
if len(p) == 0 {
return 0, nil
}
// After computeHashIfNeeded(), s.result is always a 32-byte slice
n = copy(p, s.result)
return n, nil
}
func (s *zirenKeccakState) computeHashIfNeeded() {
if s.dirty || s.result == nil {
// Use the zkvm_runtime Keccak256 which uses SyscallKeccakSponge
hashArray := zkvm_runtime.Keccak256(s.buf)
s.result = hashArray[:]
s.dirty = false
}
}