arnaucube/go-circom-prover-verifier
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Add ProvingKey binary parser

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The time on the parsing doesn't improve, as the data from the binary
file needs to be converted to `affine` representation, and then parsed
into the `bn256.G1` & `bn256.G2` formats (Montgomery). But the size of
the ProvingKey files in binary is much smaller, so will be better
handled by the smarthpones.

- Parse time benchmarks:
```
BenchmarkParsePk/Parse_Pk_bin_circuit1k-4         	       2	 563729994 ns/op
BenchmarkParsePk/Parse_Pk_json_circuit1k-4        	  635641	      1941 ns/op
BenchmarkParsePk/Parse_Pk_bin_circuit5k-4         	       1	2637941658 ns/op
BenchmarkParsePk/Parse_Pk_json_circuit5k-4        	       1	2986560185 ns/op
BenchmarkParsePk/Parse_Pk_bin_circuit10k-4        	       1	5337639150 ns/op
BenchmarkParsePk/Parse_Pk_json_circuit10k-4       	       1	6149568824 ns/op
BenchmarkParsePk/Parse_Pk_bin_circuit20k-4        	       1	10533654623 ns/op
BenchmarkParsePk/Parse_Pk_json_circuit20k-4       	       1	11657326851 ns/op
```

- Size of ProvingKey file for a circuit of 50k constraints:
```
circuit 20k constraints:
10097812 bytes of proving_key.bin
29760049 bytes of proving_key.json

circuit 50k constraints:
24194964 bytes of proving_key.bin
71484081 bytes of proving_key.json
```
This commit is contained in:
arnaucube
2020-05-13 20:58:28 +02:00
parent 1aa316cbd2
commit 5c2aaec1ca
4 changed files with 449 additions and 7 deletions
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28
prover/prover_test.go
View File

@@ -4,6 +4,7 @@ import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"testing"
"time"
@@ -16,25 +17,38 @@ import (
func TestCircuitsGenerateProof(t *testing.T) {
testCircuitGenerateProof(t, "circuit1k") // 1000 constraints
testCircuitGenerateProof(t, "circuit5k") // 5000 constraints
//testCircuitGenerateProof(t, "circuit10k") // 10000 constraints
//testCircuitGenerateProof(t, "circuit20k") // 20000 constraints
// testCircuitGenerateProof(t, "circuit10k") // 10000 constraints
// testCircuitGenerateProof(t, "circuit20k") // 20000 constraints
}
func testCircuitGenerateProof(t *testing.T, circuit string) {
provingKeyJson, err := ioutil.ReadFile("../testdata/" + circuit + "/proving_key.json")
// using json provingKey file
// provingKeyJson, err := ioutil.ReadFile("../testdata/" + circuit + "/proving_key.json")
// require.Nil(t, err)
// pk, err := parsers.ParsePk(provingKeyJson)
// require.Nil(t, err)
// witnessJson, err := ioutil.ReadFile("../testdata/" + circuit + "/witness.json")
// require.Nil(t, err)
// w, err := parsers.ParseWitness(witnessJson)
// require.Nil(t, err)
// using bin provingKey file
pkBinFile, err := os.Open("../testdata/" + circuit + "/proving_key.bin")
require.Nil(t, err)
pk, err := parsers.ParsePk(provingKeyJson)
defer pkBinFile.Close()
pk, err := parsers.ParsePkBin(pkBinFile)
require.Nil(t, err)
witnessJson, err := ioutil.ReadFile("../testdata/" + circuit + "/witness.json")
witnessBinFile, err := os.Open("../testdata/" + circuit + "/witness.bin")
require.Nil(t, err)
w, err := parsers.ParseWitness(witnessJson)
defer witnessBinFile.Close()
w, err := parsers.ParseWitnessBin(witnessBinFile)
require.Nil(t, err)
beforeT := time.Now()
proof, pubSignals, err := GenerateProof(pk, w)
assert.Nil(t, err)
fmt.Println("proof generation time elapsed:", time.Since(beforeT))
fmt.Println("proof generation time for "+circuit+" elapsed:", time.Since(beforeT))
proofStr, err := parsers.ProofToJson(proof)
assert.Nil(t, err)