pub struct KeccakPrecompile;Trait Implementations§
Source§impl EventHandler for KeccakPrecompile
impl EventHandler for KeccakPrecompile
Source§fn on_event(
&self,
process: &ProcessorState<'_>,
) -> Result<Vec<AdviceMutation>, EventError>
fn on_event( &self, process: &ProcessorState<'_>, ) -> Result<Vec<AdviceMutation>, EventError>
Keccak256 event handler called by the processor when the VM emits a hash request event.
Reads packed input data from memory, computes the Keccak256 hash, provides the digest via
the advice stack, and stores the raw preimage for verification (see [PrecompileVerifier]).
§Input Format
- Stack:
[event_id, ptr, len_bytes, ...]whereptris word-aligned (divisible by 4) - Memory: Input bytes packed as u32 field elements (4 bytes per element, little-endian)
from
ptrtoptr+ceil(len_bytes/4), with unused bytes in the final u32 set to zero
§Output Format
- Advice Stack: Extended with digest
[h_0, ..., h_7](least significant u32 on top) - Precompile Request: Stores tag
[event_id, len_bytes, 0, 0]and raw preimage bytes for verification time
Source§impl PrecompileVerifier for KeccakPrecompile
impl PrecompileVerifier for KeccakPrecompile
Source§fn verify(
&self,
calldata: &[u8],
) -> Result<PrecompileCommitment, PrecompileError>
fn verify( &self, calldata: &[u8], ) -> Result<PrecompileCommitment, PrecompileError>
Verifier for Keccak256 precompile computations at verification time.
Receives the raw preimage bytes stored during execution (see EventHandler::on_event),
recomputes the Keccak256 hash, and generates a commitment P2(P2(input) || P2(digest))
with tag [event_id, len_bytes, 0, 0] that validates against the execution trace.
Auto Trait Implementations§
impl Freeze for KeccakPrecompile
impl RefUnwindSafe for KeccakPrecompile
impl Send for KeccakPrecompile
impl Sync for KeccakPrecompile
impl Unpin for KeccakPrecompile
impl UnsafeUnpin for KeccakPrecompile
impl UnwindSafe for KeccakPrecompile
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