arnaucube/gnark-plonky2-verifier
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add observer for FriConfig & FriParams in verifier circuit, to match the updated version of plonky2 at PR#1678 (https://github.com/0xPolygonZero/plonky2/pull/1678)

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arnaucube
2025-08-15 16:06:08 +00:00
parent 1d96750760
commit 853a273aa9
4 changed files with 39 additions and 7 deletions
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10
types/common_data.go
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@@ -86,6 +86,13 @@ func ReadCommonCircuitData(path string) CommonCircuitData {
commonCircuitData.Config.FriConfig.RateBits = raw.Config.FriConfig.RateBits
commonCircuitData.Config.FriConfig.CapHeight = raw.Config.FriConfig.CapHeight
commonCircuitData.Config.FriConfig.ProofOfWorkBits = raw.Config.FriConfig.ProofOfWorkBits
// since the only reduction_strategy supported in gnark-plonky2-verifier is
// ConstantArityBits, set the first element of the array to 1 (following
// https://github.com/0xPolygonZero/plonky2/blob/main/plonky2/src/fri/reduction_strategies.rs#L70).
// Ideally this first value set to 1 would already be set by plonky2 serialization of the
// CommonCircuitData, but the serializer available in plonky2's implementation does not
// include this first value
commonCircuitData.Config.FriConfig.ReductionStrategy = append([]uint64{1}, raw.Config.FriConfig.ReductionStrategy.ConstantArityBits...)
commonCircuitData.Config.FriConfig.NumQueryRounds = raw.Config.FriConfig.NumQueryRounds
commonCircuitData.FriParams.DegreeBits = raw.FriParams.DegreeBits
@@ -93,6 +100,9 @@ func ReadCommonCircuitData(path string) CommonCircuitData {
commonCircuitData.FriParams.Config.RateBits = raw.FriParams.Config.RateBits
commonCircuitData.FriParams.Config.CapHeight = raw.FriParams.Config.CapHeight
commonCircuitData.FriParams.Config.ProofOfWorkBits = raw.FriParams.Config.ProofOfWorkBits
// set FriParams.ReductionStrategy[0]=1, for the same reason as in
// FriConfig.ReductionStrategy few lines above
commonCircuitData.FriParams.Config.ReductionStrategy = append([]uint64{1}, raw.FriParams.Config.ReductionStrategy.ConstantArityBits...)
commonCircuitData.FriParams.Config.NumQueryRounds = raw.FriParams.Config.NumQueryRounds
commonCircuitData.FriParams.ReductionArityBits = raw.FriParams.ReductionArityBits

12
types/types.go
View File

@@ -5,13 +5,11 @@ import (
)
type FriConfig struct {
RateBits uint64
CapHeight uint64
ProofOfWorkBits uint64
NumQueryRounds uint64
// Note that we do not need `reduction_strategy` of type FriReductionStrategy as the plonky2 FriConfig has.
// reduction_strategy is only used for computing `reduction_arity_bits`, which is serialized in the
// CommonCircuitData.
RateBits uint64
CapHeight uint64
ProofOfWorkBits uint64
ReductionStrategy []uint64 // only ConstantArityBits is supported
NumQueryRounds uint64
}
func (fc *FriConfig) Rate() float64 {