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eth-kzg-ceremony-alt
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Add json marshalers for State transcripts, test with real state data from sequencer

main
arnaucube 1 year ago
parent
0b45edde8d
commit
9808319143
5 changed files with 494 additions and 83 deletions
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  1. +2
    -0
      .gitignore
  2. +300
    -0
      current_state_10.json
  3. +156
    -31
      parsers.go
  4. +9
    -48
      parsers_test.go
  5. +27
    -4
      powersoftau_test.go

+ 2
- 0
.gitignore
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@ -0,0 +1,2 @@
parsed_state.json
new_state.json

+ 300
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current_state_10.json
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{
"transcripts": [
{
"numG1Powers": 10,
"numG2Powers": 10,
"powersOfTau": {
"G1Powers": [
"0x97f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb",
"0x82768fcc77ecd32918075e829ea2135b583167c30f18a09afab3b69200df3d1b24285c56b1931dfc3c8b0287875441f4",
"0xa284c35fd310242b69140bc24c04857297e5c3b2d1f7e4fed49de5766855ee9de7ee8bf2372e560f429b6f8333f35ac3",
"0x8b9c3c5d7e1470a4e078c8f95d72586d991bc39bc21edb0808c3abb6960c9001e1fb3c44a44006b408bf7db1f631ff29",
"0xaba01f71db64af08bee494f7c42d096f8ebf6e38e46b60a1abe943b6ca7db4799d0c3aaa67776ca04914a7de99f184f0",
"0x90716c4245b359a2c930a55e5523664ae5f3a23835dac1daf6ac086deb5175bf8f65b594cbc530feaaaec4e05106f68a",
"0x87965bcde1f5a4225c978591bda377bf81c05a4395637ebe055cd41551534095e2206385000aa6c8bf2e3f20c775a636",
"0xa9de87f6f0128984809749a58ddc215805ed9a520e31234f6853f9bc1240ff3c80cf81ef42fce44733bc86d3ad0ce0e3",
"0xa8143d75d26459f7e6c6234f82be91542745e3bf49cc4a13d2392f4a71d00d152705273364e203abe21f3e2eb229e4c9",
"0xaec2192449098c2b1510c300e09674d0d3c41e18099e1f21b1224d19a25e76a4f919e978acc0c30e4900ae6225ac10c4"
],
"G2Powers": [
"0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
"0xb23fff3a57fe76237f456435a7fc6c13c0ceecb6859b575a9d538b7171e662696fc2f5d5f4a7c4b5f33fcfe4b5b01bb900f88b99356266d0cc041333b0e86e6f287ff073a77fe183a52193988bf2f2ba4e2537abca6262b6d4d34ac7f04f4b54",
"0x93db2d683ae79130891a9bf203c6ab578b5341f3e85d230ffd85d12e063f3699277128f9d514604d896798ab6b3b981a02659fb0633d507e4fb156f1496af6d8e0010ac0f2dacdbef1e1f7588af97f91327717d60667ddf850d45809edd00b81",
"0x86a79feb43430b17bad586e34166dc9f6b55c4410a83a7d8a471ace9985952649b71482bc10b8a745c97608155b5ee8c0c441a795009405d04183709027a7bf786e76e606bdca6d7e4b129a6f7f188a8b1958e69f25f40d3c81201a267439a8e",
"0x8098bb55e9a916877833cc49297265b56aee082c02df011bb44651dbca97759bd6b916a3292c34e38f158b0afe13a3cf0bae0ee067812c4ec1d15ef117fafb5312f578e1682863f992039b1364235d2b83cfd9b1e7a0c7ae139ca60f45a27a43",
"0xb29b4cf3a94c3ddf0df5acb9dffcd950761774839215f826a05ad5873fd292e75b88e2df145886221385f99895dd901e1617af6ecb920bd4faa58d9ecdbce2d90803fc8e326145da07b1217181387a0fcd0548557adb00e8d43215e04c89628e",
"0xa2a362a881e9377f76d1786e3a67eb010f8379a7503ded20f224c73ff8b169965c52ed46f3d898c279208576878810b901a444cb875fa540deff20c66a0813660e8a12da5e6e5982139c181813be47d53bdbae626011e98c058c8cf8a13b5ca1",
"0xa836fb33fcffdc25476179c24ac85c6434b29de23dfb8040e662390883d70f45f98bd54fffc72670250d6d871286e556079fafe3155e982c3bffbe46b612f7b7b3c8bdbb993499e3ca4c59a870c10570e54a4a44f35140a90d12199075f4a0ad",
"0x92aca8122ddf5b8f854d37f9513457445d8367b303d1225cfc21303c51ba66b28c85db09ffbe30d1df0d82095df9ed211317741c3316a4393e098223f955c24b413c85bbdd0608366b15583e6092e041b5196a2bba48bdc65392fb4a615f2667",
"0xb1fc0c7f7daf9ed9c05af5f2232752acefbe3419ea721e340b85ad7de71e915872e5df3dec1937f1954b575ad8046d68077c07cbad149058cdcf4ec2561d1955911897d2cbb67ca455cca8458506eac973affaec1f80c1a2953a27e299e291c0"
]
},
"witness": {
"runningProducts": [
"0x97f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb",
"0x92421cc9dec0e52049a2ea2bbaa510954a1dcdb9f6279ceaa01be545ead78ccb2af6e3d0159a7652f0f91afba848c7c2",
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"0x9726eb7cb9dc7e7dd63bb390d99f6a45fa40b23f2602a4468a1b068860f51818138090d903ec9eb2a2a6e5cf8e6afc00",
"0x86af22084f0839b2ee00897e7eba5bc63839e6ee7b6cfbff0a55d40b915178a4b6816a8e26448c2da175831421670639",
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],
"potPubkeys": [
"0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
"0xa2373ed5e63966b80b1d28f7ebbf6ccb485e40754b5189654a3f43c6e9893636b022f6b6048be5253ad1da252aae5d73149d4c461ebb75d2b97cf8d4ecbd2c550ec94631a5af0c82f2a03d47f756879fd8b716fdb4c95689786692663ddd97e0",
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],
"blsSignatures": [
"",
"",
"0x88767e0e0fa7b5fdae0163a3ab703a32b784dd77670261751a832f9972aca4a2d53e2085be8f5af327d1094af07df07c",
"",
"",
"0x92a317a49893e1097bb6775d95413fae227ac0a8c4491a14038b2c5e60eef1793914a007383e080417b36fd032a5b885",
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"",
"0x953700bfa811ade9344e7f69baa00f5d608bcadedeb6131bfd2fe5d977591512c56241e6b5d79c5fdef6a6222f390839",
""
]
}
},
{
"numG1Powers": 10,
"numG2Powers": 10,
"powersOfTau": {
"G1Powers": [
"0x97f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb",
"0xb26d3dafde52e291c736219ff4cdcacc3a08a684d4af2db1547d9b2e5aed7d3083c514169a67e59e351f55996e96fd35",
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],
"G2Powers": [
"0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
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]
},
"witness": {
"runningProducts": [
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],
"potPubkeys": [
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],
"blsSignatures": [
"",
"",
"0x9206922af6e414e8b6010e901a2bbc5f30c19aa22c7ea332ebea02b2ba5b0344709d677e215837089904d21fe5643f40",
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""
]
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{
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""
]
}
},
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"",
"0x826397447f0581af1289b7ec0fde3e3055745236c3365f160a1710cd4a5fe8a8cf901778b931288541011ab38ff98cc2",
"0xb47cc30ae957b6514fc2f275e83a8d008e5b846ea58a09b501eb08fc1d04920af82a1bea47f1694023f41457d1120d27",
"",
"0xb380da9e3a8397003297a511183decb7c9847c59af545af0b163130718afe5d3fdb028693d9d9bd7001d792c43a14baf",
""
]
}
}
],
"participantIds": [
"",
"git|1214109|kustosz",
"eth|0xb68d6aa5fbf113025f99166a21eb068077060c36",
"git|14827647|StefanBratanov",
"git|14827647|StefanBratanov",
"eth|0x99daaf637e697c53afaa67d6ff27e336db925812",
"eth|0xd01159a043d1d6bc575dae358c6046f5cc08e7e6",
"git|4806269|guilhermedecampo",
"eth|0xe1e801e4891a88d01a028d8ef34352aa07f188dd",
"git|14827647|StefanBratanov"
],
"participantEcdsaSignatures": [
"",
"",
"0x0e29446228893fe2632f4dcea683398ba45d73545d8cc458cd9350303b5bb43c4bdc3bcc55615cc05ff8e880035022f7cb4d9e4e872e58d0c48eafe0698cf0231c",
"",
"",
"0xe2e37813fe8599d82442002606eeb87a0532a806677e9683bc9ccfd17145d1a3436ed15cd46ecf394460daf11e557bd0bf2ae9164e54bcd0c19e6cdea0db28b31c",
"0xe49a55ddfafcd5307a4f1dfa87fa31ecd9afabb4bcec328911d23f3d94cfde3025cad9959178be7ec803f185159dc0d6cd5876f91bd6f9fc8217882e8dc43f1b1c",
"",
"0xc94387cb6fe8bae72c8b5899662d77aa3a559fd21fd0e6c0f00f4757faa5b69c29313aeb7d54b9b55221d89ca970bbce92dc610268ec013ac9369085738f0d631c",
""
]
}

+ 156
- 31
parsers.go
View File

@ -2,23 +2,157 @@ package kzgceremony
import (
"encoding/hex"
"encoding/json"
"fmt"
"strings"
bls12381 "github.com/kilic/bls12-381"
)
// WIP
func (s *State) UnmarshalJSON(b []byte) error {
var sStr stateStr
if err := json.Unmarshal(b, &sStr); err != nil {
return err
}
var err error
s.ParticipantIDs = sStr.ParticipantIDs
s.ParticipantECDSASignatures = sStr.ParticipantECDSASignatures
s.Transcripts = make([]Transcript, len(sStr.Transcripts))
for i := 0; i < len(sStr.Transcripts); i++ {
if sStr.Transcripts[i].NumG1Powers != uint64(len(sStr.Transcripts[i].PowersOfTau.G1Powers)) {
return fmt.Errorf("wrong NumG1Powers")
}
if sStr.Transcripts[i].NumG2Powers != uint64(len(sStr.Transcripts[i].PowersOfTau.G2Powers)) {
return fmt.Errorf("wrong NumG2Powers")
}
s.Transcripts[i].NumG1Powers = sStr.Transcripts[i].NumG1Powers
s.Transcripts[i].NumG2Powers = sStr.Transcripts[i].NumG2Powers
s.Transcripts[i].PowersOfTau = &SRS{}
s.Transcripts[i].PowersOfTau.G1Powers, err =
stringsToPointsG1(sStr.Transcripts[i].PowersOfTau.G1Powers)
if err != nil {
return err
}
s.Transcripts[i].PowersOfTau.G2Powers, err =
stringsToPointsG2(sStr.Transcripts[i].PowersOfTau.G2Powers)
if err != nil {
return err
}
s.Transcripts[i].Witness = &Witness{}
s.Transcripts[i].Witness.RunningProducts, err =
stringsToPointsG1(sStr.Transcripts[i].Witness.RunningProducts)
if err != nil {
return err
}
s.Transcripts[i].Witness.PotPubKeys, err =
stringsToPointsG2(sStr.Transcripts[i].Witness.PotPubKeys)
if err != nil {
return err
}
s.Transcripts[i].Witness.BLSSignatures, err =
stringsToPointsG1(sStr.Transcripts[i].Witness.BLSSignatures)
if err != nil {
return err
}
}
return err
}
func (s State) MarshalJSON() ([]byte, error) {
var sStr stateStr
sStr.ParticipantIDs = s.ParticipantIDs
sStr.ParticipantECDSASignatures = s.ParticipantECDSASignatures
sStr.Transcripts = make([]transcriptStr, len(s.Transcripts))
for i := 0; i < len(s.Transcripts); i++ {
if s.Transcripts[i].NumG1Powers != uint64(len(s.Transcripts[i].PowersOfTau.G1Powers)) {
return nil, fmt.Errorf("wrong NumG1Powers")
}
if s.Transcripts[i].NumG2Powers != uint64(len(s.Transcripts[i].PowersOfTau.G2Powers)) {
return nil, fmt.Errorf("wrong NumG2Powers")
}
sStr.Transcripts[i].NumG1Powers = s.Transcripts[i].NumG1Powers
sStr.Transcripts[i].NumG2Powers = s.Transcripts[i].NumG2Powers
sStr.Transcripts[i].PowersOfTau = powersOfTauStr{}
sStr.Transcripts[i].PowersOfTau.G1Powers =
g1PointsToStrings(s.Transcripts[i].PowersOfTau.G1Powers)
sStr.Transcripts[i].PowersOfTau.G2Powers =
g2PointsToStrings(s.Transcripts[i].PowersOfTau.G2Powers)
sStr.Transcripts[i].Witness = witnessStr{}
sStr.Transcripts[i].Witness.RunningProducts =
g1PointsToStrings(s.Transcripts[i].Witness.RunningProducts)
sStr.Transcripts[i].Witness.PotPubKeys =
g2PointsToStrings(s.Transcripts[i].Witness.PotPubKeys)
sStr.Transcripts[i].Witness.BLSSignatures =
g1PointsToStrings(s.Transcripts[i].Witness.BLSSignatures)
}
return json.Marshal(sStr)
}
type powersOfTauStr struct {
G1Powers []string `json:"G1Powers"`
G2Powers []string `json:"G2Powers"`
}
type witnessStr struct {
RunningProducts []string `json:"runningProducts"`
PotPubKeys []string `json:"potPubkeys"`
BLSSignatures []string `json:"blsSignatures"`
}
type transcriptStr struct {
NumG1Powers uint64 `json:"numG1Powers"`
NumG2Powers uint64 `json:"numG2Powers"`
PowersOfTau powersOfTauStr `json:"powersOfTau"`
Witness witnessStr `json:"witness"`
}
type stateStr struct {
Transcripts []transcriptStr `json:"transcripts"`
ParticipantIDs []string `json:"participantIds"`
ParticipantECDSASignatures []string `json:"participantEcdsaSignatures"`
}
// ParseEthJSON parses the eth-kzg-ceremony SRS json format
func ParseEthJSON(g1sStr, g2sStr []string) (*SRS, error) {
g1 := bls12381.NewG1()
func g1PointsToStrings(points []*bls12381.PointG1) []string {
g1 := bls12381.NewG1() // TODO unify g1 instantiation (& g2)
n := len(points)
g1s := make([]string, n)
for i := 0; i < n; i++ {
if points[i] == nil {
g1s[i] = ""
continue
}
g1s[i] = "0x" + hex.EncodeToString(g1.ToCompressed(points[i]))
}
return g1s
}
func g2PointsToStrings(points []*bls12381.PointG2) []string {
g2 := bls12381.NewG2()
nG1s := len(g1sStr)
nG2s := len(g2sStr)
g1s := make([]*bls12381.PointG1, nG1s)
g2s := make([]*bls12381.PointG2, nG2s)
for i := 0; i < nG1s; i++ {
g1sBytes, err := hex.DecodeString(strings.TrimPrefix(g1sStr[i], "0x"))
n := len(points)
g2s := make([]string, n)
for i := 0; i < n; i++ {
if points[i] == nil {
g2s[i] = ""
continue
}
g2s[i] = "0x" + hex.EncodeToString(g2.ToCompressed(points[i]))
}
return g2s
}
func stringsToPointsG1(s []string) ([]*bls12381.PointG1, error) {
g1 := bls12381.NewG1() // TODO unify g1 instantiation (& g2)
n := len(s)
g1s := make([]*bls12381.PointG1, n)
for i := 0; i < n; i++ {
if s[i] == "" {
continue
}
g1sBytes, err := hex.DecodeString(strings.TrimPrefix(s[i], "0x"))
if err != nil {
return nil, err
}
@ -28,8 +162,17 @@ func ParseEthJSON(g1sStr, g2sStr []string) (*SRS, error) {
}
g1s[i] = g1s_i
}
for i := 0; i < nG2s; i++ {
g2sBytes, err := hex.DecodeString(strings.TrimPrefix(g2sStr[i], "0x"))
return g1s, nil
}
func stringsToPointsG2(s []string) ([]*bls12381.PointG2, error) {
g2 := bls12381.NewG2()
n := len(s)
g2s := make([]*bls12381.PointG2, n)
for i := 0; i < n; i++ {
if s[i] == "" {
continue
}
g2sBytes, err := hex.DecodeString(strings.TrimPrefix(s[i], "0x"))
if err != nil {
return nil, err
}
@ -39,23 +182,5 @@ func ParseEthJSON(g1sStr, g2sStr []string) (*SRS, error) {
}
g2s[i] = g2s_i
}
return &SRS{G1s: g1s, G2s: g2s}, nil
}
// ToEthJSON outputs the SRS into the eth-kzg-ceremony SRS json format
func (srs *SRS) ToEthJSON() ([]string, []string, error) {
g1 := bls12381.NewG1()
g2 := bls12381.NewG2()
nG1s := len(srs.G1s)
nG2s := len(srs.G2s)
g1s := make([]string, nG1s)
g2s := make([]string, nG2s)
for i := 0; i < nG1s; i++ {
g1s[i] = "0x" + hex.EncodeToString(g1.ToCompressed(srs.G1s[i]))
}
for i := 0; i < nG2s; i++ {
g2s[i] = "0x" + hex.EncodeToString(g2.ToCompressed(srs.G2s[i]))
}
return g1s, g2s, nil
return g2s, nil
}

+ 9
- 48
parsers_test.go
View File

@ -2,6 +2,8 @@ package kzgceremony
import (
"encoding/hex"
"encoding/json"
"io/ioutil"
"strings"
"testing"
@ -9,28 +11,19 @@ import (
bls12381 "github.com/kilic/bls12-381"
)
func TestParseSRS(t *testing.T) {
func TestStateMarshalers(t *testing.T) {
c := qt.New(t)
srs_0 := newEmptySRS(2, 2)
contr_1, err := Contribute(srs_0, []byte("1111111111111111111111111111111111111111111111111111111111111111"))
j, err := ioutil.ReadFile("current_state_10.json")
c.Assert(err, qt.IsNil)
g1s, g2s, err := contr_1.SRS.ToEthJSON()
state := &State{}
err = json.Unmarshal(j, state)
c.Assert(err, qt.IsNil)
parsedSRS, err := ParseEthJSON(g1s, g2s)
b, err := json.Marshal(state)
c.Assert(err, qt.IsNil)
err = ioutil.WriteFile("parsed_state.json", b, 0600)
c.Assert(err, qt.IsNil)
g1 := bls12381.NewG1()
g2 := bls12381.NewG2()
for i := 0; i < len(contr_1.SRS.G1s); i++ {
c.Assert(g1.Equal(parsedSRS.G1s[i], contr_1.SRS.G1s[i]), qt.IsTrue)
}
for i := 0; i < len(contr_1.SRS.G2s); i++ {
c.Assert(g2.Equal(parsedSRS.G2s[i], contr_1.SRS.G2s[i]), qt.IsTrue)
}
}
func TestParseCompressedG1Point(t *testing.T) {
@ -84,35 +77,3 @@ func TestParseCompressedG2Point(t *testing.T) {
// additionally check that g1Point is zero
c.Assert(g2.Equal(g2Point, g2.Zero()), qt.IsTrue)
}
func TestVectorFromRustImpl(t *testing.T) {
c := qt.New(t)
testVectorG1s := []string{
"0x97f1d3a73197d7942695638c4fa9ac0fc3688c4f9774b905a14e3a3f171bac586c55e83ff97a1aeffb3af00adb22c6bb",
"0xae4a5e0fe4947fd5551664fc49453d805ce6af2dd6f053e147d95d9ede825190b06028f228f47c0d3118b71313235aa7",
"0x888a1073366b3e974c318be5862f607c18fb5241cfefc3c8b82c31c4db10f866c546804db6e44bf61b61d8c31d006099",
"0x84afca7ce5cc42aa998725610d14cd47078e523a9cb96b66856f563d62d44ff6489f0b1827b853e94d9474b75a138ec6",
"0x8ae778a5b534c6eadcce4c4e7dd1dab3674d20bfe686f70506fba1695bbdae2455169b035505e5246d726a9e0c982335",
}
testVectorG2s := []string{
"0x93e02b6052719f607dacd3a088274f65596bd0d09920b61ab5da61bbdc7f5049334cf11213945d57e5ac7d055d042b7e024aa2b2f08f0a91260805272dc51051c6e47ad4fa403b02b4510b647ae3d1770bac0326a805bbefd48056c8c121bdb8",
"0xa5d4fc7bfa882ef674fbbcdda73c66c2627a5a723ddf6fc0f242b3f71301a6e7181708a8c63756787a2c3e47c2b347ca18c64b103461036830880cd26bacad80cdbfe00c69e9214b7c90bf30ab0804f520bed3ce608aefeb6f85011f0d745575",
"0x87b93440866545adf37f5119d640036b2856a790bd09c2b7f69a1a1bdc7846c5f48f622fcbf5c46a51dede46a4682b7b118542548df17ff7c7e6f63049e1d1c56ca1a637f8a55136d0ed7ab466e78550f635dc06d78d87a3003dab133b8e275a",
}
parsedSRS, err := ParseEthJSON(testVectorG1s, testVectorG2s)
c.Assert(err, qt.IsNil)
g1s, g2s, err := parsedSRS.ToEthJSON()
c.Assert(err, qt.IsNil)
c.Assert(len(testVectorG1s), qt.Equals, len(g1s))
c.Assert(len(testVectorG2s), qt.Equals, len(g2s))
for i := 0; i < len(g1s); i++ {
c.Assert(g1s[i], qt.Equals, testVectorG1s[i])
}
for i := 0; i < len(g2s); i++ {
c.Assert(g2s[i], qt.Equals, testVectorG2s[i])
}
}

+ 27
- 4
powersoftau_test.go
View File

@ -1,6 +1,8 @@
package kzgceremony
import (
"encoding/json"
"io/ioutil"
"testing"
qt "github.com/frankban/quicktest"
@ -11,12 +13,33 @@ func TestContribution(t *testing.T) {
srs_0 := newEmptySRS(10, 10)
contr_1, err := Contribute(srs_0, []byte("1111111111111111111111111111111111111111111111111111111111111111"))
srs_1, proof_1, err := Contribute(srs_0,
[]byte("1111111111111111111111111111111111111111111111111111111111111111"))
c.Assert(err, qt.IsNil)
c.Assert(Verify(srs_0, contr_1.SRS, contr_1.Proof), qt.IsTrue)
c.Assert(Verify(srs_0, srs_1, proof_1), qt.IsTrue)
contr_2, err := Contribute(contr_1.SRS, []byte("2222222222222222222222222222222222222222222222222222222222222222"))
srs_2, proof_2, err := Contribute(srs_1,
[]byte("2222222222222222222222222222222222222222222222222222222222222222"))
c.Assert(err, qt.IsNil)
c.Assert(Verify(srs_1, srs_2, proof_2), qt.IsTrue)
}
func TestComputeNewState(t *testing.T) {
c := qt.New(t)
j, err := ioutil.ReadFile("current_state_10.json")
c.Assert(err, qt.IsNil)
cs := &State{}
err = json.Unmarshal(j, cs)
c.Assert(err, qt.IsNil)
newState, err :=
cs.Contribute([]byte("1111111111111111111111111111111111111111111111111111111111111111"))
c.Assert(err, qt.IsNil)
b, err := json.Marshal(newState)
c.Assert(err, qt.IsNil)
err = ioutil.WriteFile("new_state.json", b, 0600)
c.Assert(err, qt.IsNil)
c.Assert(Verify(contr_1.SRS, contr_2.SRS, contr_2.Proof), qt.IsTrue)
}

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