nim-dagger/tests/codex/slots/backends/helpers.nim

158 lines
4.1 KiB
Nim

import std/sequtils
import std/sugar
import std/strutils
import std/options
import pkg/poseidon2
import pkg/poseidon2/io
import pkg/constantine/math/arithmetic
import pkg/constantine/math/io/io_bigints
import pkg/constantine/math/io/io_fields
import pkg/codex/merkletree
import pkg/codex/slots
import pkg/codex/slots/types
import pkg/codex/utils/json
export types
func toJsonDecimal*(big: BigInt[254]): string =
let s = big.toDecimal.strip( leading = true, trailing = false, chars = {'0'} )
if s.len == 0: "0" else: s
func toJson*(g1: CircomG1): JsonNode =
%* {
"x": Bn254Fr.fromBytes(g1.x).get.toBig.toJsonDecimal,
"y": Bn254Fr.fromBytes(g1.y).get.toBig.toJsonDecimal
}
func toJson*(g2: CircomG2): JsonNode =
%* {
"x": [
Bn254Fr.fromBytes(g2.x[0]).get.toBig.toJsonDecimal,
Bn254Fr.fromBytes(g2.x[1]).get.toBig.toJsonDecimal],
"y": [
Bn254Fr.fromBytes(g2.y[0]).get.toBig.toJsonDecimal,
Bn254Fr.fromBytes(g2.y[1]).get.toBig.toJsonDecimal]
}
proc toJson*(vpk: VerifyingKey): JsonNode =
let
ic = toSeq(cast[ptr UncheckedArray[CircomG1]](vpk.ic).toOpenArray(0, vpk.icLen.int - 1))
echo ic.len
%* {
"alpha1": vpk.alpha1.toJson,
"beta2": vpk.beta2.toJson,
"gamma2": vpk.gamma2.toJson,
"delta2": vpk.delta2.toJson,
"ic": ic.mapIt( it.toJson )
}
func toJson*(input: ProofInputs[Poseidon2Hash]): JsonNode =
var
input = input
%* {
"dataSetRoot": input.datasetRoot.toBig.toJsonDecimal,
"entropy": input.entropy.toBig.toJsonDecimal,
"nCellsPerSlot": input.nCellsPerSlot,
"nSlotsPerDataSet": input.nSlotsPerDataSet,
"slotIndex": input.slotIndex,
"slotRoot": input.slotRoot.toDecimal,
"slotProof": input.slotProof.mapIt( it.toBig.toJsonDecimal ),
"cellData": input.samples.mapIt(
it.cellData.mapIt( it.toBig.toJsonDecimal )
),
"merklePaths": input.samples.mapIt(
it.merklePaths.mapIt( it.toBig.toJsonDecimal )
)
}
func toJson*(input: NormalizedProofInputs[Poseidon2Hash]): JsonNode =
toJson(ProofInputs[Poseidon2Hash](input))
func jsonToProofInput*(_: type Poseidon2Hash, inputJson: JsonNode): ProofInputs[Poseidon2Hash] =
let
cellData =
inputJson["cellData"].mapIt(
it.mapIt(
block:
var
big: BigInt[256]
hash: Poseidon2Hash
data: array[32, byte]
assert bool(big.fromDecimal( it.str ))
assert data.marshal(big, littleEndian)
Poseidon2Hash.fromBytes(data).get
).concat # flatten out elements
)
merklePaths =
inputJson["merklePaths"].mapIt(
it.mapIt(
block:
var
big: BigInt[254]
hash: Poseidon2Hash
assert bool(big.fromDecimal( it.getStr ))
hash.fromBig( big )
hash
)
)
slotProof = inputJson["slotProof"].mapIt(
block:
var
big: BigInt[254]
hash: Poseidon2Hash
assert bool(big.fromDecimal( it.str ))
hash.fromBig( big )
hash
)
datasetRoot = block:
var
big: BigInt[254]
hash: Poseidon2Hash
assert bool(big.fromDecimal( inputJson["dataSetRoot"].str ))
hash.fromBig( big )
hash
slotRoot = block:
var
big: BigInt[254]
hash: Poseidon2Hash
assert bool(big.fromDecimal( inputJson["slotRoot"].str ))
hash.fromBig( big )
hash
entropy = block:
var
big: BigInt[254]
hash: Poseidon2Hash
assert bool(big.fromDecimal( inputJson["entropy"].str ))
hash.fromBig( big )
hash
nCellsPerSlot = inputJson["nCellsPerSlot"].getInt
nSlotsPerDataSet = inputJson["nSlotsPerDataSet"].getInt
slotIndex = inputJson["slotIndex"].getInt
ProofInputs[Poseidon2Hash](
entropy: entropy,
slotIndex: slotIndex,
datasetRoot: datasetRoot,
slotProof: slotProof,
slotRoot: slotRoot,
nCellsPerSlot: nCellsPerSlot,
nSlotsPerDataSet: nSlotsPerDataSet,
samples: zip(cellData, merklePaths)
.mapIt(Sample[Poseidon2Hash](
cellData: it[0],
merklePaths: it[1]
))
)