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Merge pull request #189 from Fairblock/add-keyshare-module-unit-test
Add keyshare module unit test
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| package random | ||
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| import ( | ||
| "encoding/hex" | ||
| "math/rand" | ||
| "time" | ||
| ) | ||
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| // RandHex returns a random hexadecimal string of length n. | ||
| func RandHex(n int) string { | ||
| src := rand.New(rand.NewSource(time.Now().UnixNano())) | ||
| b := make([]byte, (n+1)/2) | ||
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| if _, err := src.Read(b); err != nil { | ||
| panic(err) | ||
| } | ||
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| return hex.EncodeToString(b)[:n] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package random | ||
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| import ( | ||
| "encoding/base64" | ||
| "encoding/hex" | ||
| distIBE "github.com/FairBlock/DistributedIBE" | ||
| "github.com/Fairblock/fairyring/testutil/sample" | ||
| "github.com/Fairblock/fairyring/x/keyshare/types" | ||
| dcrdSecp256k1 "github.com/decred/dcrd/dcrec/secp256k1" | ||
| "github.com/drand/kyber" | ||
| bls "github.com/drand/kyber-bls12381" | ||
| "math" | ||
| "math/big" | ||
| ) | ||
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| type GeneratedShare struct { | ||
| Share string | ||
| EncShare string | ||
| Index kyber.Scalar | ||
| PrivateKey *dcrdSecp256k1.PrivateKey | ||
| PK *dcrdSecp256k1.PublicKey | ||
| ValidatorAddress string | ||
| } | ||
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| type GenerateResult struct { | ||
| GeneratedShare []*GeneratedShare | ||
| KeyShareEncryptedKeyShares []*types.EncryptedKeyShare | ||
| Commitments []string | ||
| MasterPublicKey string | ||
| } | ||
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| func GeneratePubKeyAndShares(totalNumberOfValidator uint32) (*GenerateResult, error) { | ||
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| t := int(math.Ceil(float64(totalNumberOfValidator) * (2.0 / 3.0))) | ||
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| shares, mpk, _, err := distIBE.GenerateShares(totalNumberOfValidator, uint32(t)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| masterPublicKeyByte, err := mpk.MarshalBinary() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| var result GenerateResult | ||
| result.MasterPublicKey = hex.EncodeToString(masterPublicKeyByte) | ||
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| suite := bls.NewBLS12381Suite() | ||
| keyShareCommitments := make([]string, totalNumberOfValidator) | ||
| sharesList := make([]*GeneratedShare, totalNumberOfValidator) | ||
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| for _, s := range shares { | ||
| indexByte, _ := hex.DecodeString(s.Index.String()) | ||
| indexInt := big.NewInt(0).SetBytes(indexByte).Uint64() | ||
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| commitmentPoints := suite.G1().Point().Mul(s.Value, suite.G1().Point().Base()) | ||
| commitmentPointsBinary, _ := commitmentPoints.MarshalBinary() | ||
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| keyShareCommitments[indexInt-1] = hex.EncodeToString(commitmentPointsBinary) | ||
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| randomAddr := sample.AccAddress() | ||
| sb, _ := s.Value.MarshalBinary() | ||
| privKey, err := dcrdSecp256k1.GeneratePrivateKey() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| res, err := dcrdSecp256k1.Encrypt(privKey.PubKey(), sb) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
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| share := GeneratedShare{ | ||
| hex.EncodeToString(sb), | ||
| base64.StdEncoding.EncodeToString(res), | ||
| s.Index, | ||
| privKey, | ||
| privKey.PubKey(), | ||
| randomAddr, | ||
| } | ||
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| sharesList[indexInt-1] = &share | ||
| } | ||
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| n := len(sharesList) | ||
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| encShares := make([]*types.EncryptedKeyShare, n) | ||
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| for _, v := range sharesList { | ||
| indexByte, _ := hex.DecodeString(v.Index.String()) | ||
| indexInt := big.NewInt(0).SetBytes(indexByte).Uint64() | ||
| encShares[indexInt-1] = &types.EncryptedKeyShare{ | ||
| Data: v.EncShare, | ||
| Validator: v.ValidatorAddress, | ||
| } | ||
| } | ||
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| result.GeneratedShare = sharesList | ||
| result.KeyShareEncryptedKeyShares = encShares | ||
| result.Commitments = keyShareCommitments | ||
|
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| return &result, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| package shares | ||
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| import ( | ||
| "encoding/hex" | ||
| distIBE "github.com/FairBlock/DistributedIBE" | ||
| bls "github.com/drand/kyber-bls12381" | ||
| ) | ||
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| func DeriveShare(hexShare string, shareIndex uint32, id string) (string, error) { | ||
| shareByte, err := hex.DecodeString(hexShare) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
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| share := bls.NewKyberScalar() | ||
| err = share.UnmarshalBinary(shareByte) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
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| s := bls.NewBLS12381Suite() | ||
| extractedKey := distIBE.Extract(s, share, shareIndex, []byte(id)) | ||
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| extractedBinary, err := extractedKey.SK.MarshalBinary() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| extractedKeyHex := hex.EncodeToString(extractedBinary) | ||
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| // commitmentPoint := s.G1().Point().Mul(share, s.G1().Point().Base()) | ||
| //commitmentBinary, err := commitmentPoint.MarshalBinary() | ||
| //if err != nil { | ||
| // return "", err | ||
| //} | ||
| // commitmentHex := hex.EncodeToString(commitmentBinary) | ||
|
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| return extractedKeyHex, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| package shares | ||
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| import ( | ||
| "encoding/base64" | ||
| "encoding/hex" | ||
| "github.com/btcsuite/btcd/btcec" | ||
| ) | ||
|
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| // EncryptWithPublicKey encrypts data using an RSA public key. | ||
| func EncryptWithPublicKey(data string, pubKeyBase64 string) (string, error) { | ||
| // Decode the base64 public key | ||
| pubKeyBytes, err := base64.StdEncoding.DecodeString(pubKeyBase64) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
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| // Load the secp256k1 public key | ||
| pubKey, err := btcec.ParsePubKey(pubKeyBytes, btcec.S256()) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
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| ciphertext, err := btcec.Encrypt(pubKey, []byte(data)) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
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| // Encode ciphertext as hex for easy handling | ||
| return hex.EncodeToString(ciphertext), nil | ||
| } |
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