add vrf

cmd/0gchaind/root.go

@@ -12,6 +12,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/client/config"
 	"github.com/cosmos/cosmos-sdk/client/debug"
 	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/crypto/keyring"
 	"github.com/cosmos/cosmos-sdk/server"
 	servertypes "github.com/cosmos/cosmos-sdk/server/types"
 	"github.com/cosmos/cosmos-sdk/x/auth/types"
@@ -32,15 +33,16 @@ import (
 	"github.com/Kava-Labs/opendb"
 )
 
-// EnvPrefix is the prefix environment variables must have to configure the app.
+func customKeyringOptions() keyring.Option {
-const EnvPrefix = "KAVA"
+	return func(options *keyring.Options) {
+		options.SupportedAlgos = append(hd.SupportedAlgorithms, vrf.VrfAlgo)
+		options.SupportedAlgosLedger = append(hd.SupportedAlgorithmsLedger, vrf.VrfAlgo)
+	}
+}
 
-// NewRootCmd creates a new root command for the kava blockchain.
+// NewRootCmd creates a new root command for the 0g-chain blockchain.
 func NewRootCmd() *cobra.Command {
-	app.SetSDKConfig().Seal()
-
 	encodingConfig := app.MakeEncodingConfig()
-
 	initClientCtx := client.Context{}.
 		WithCodec(encodingConfig.Marshaler).
 		WithInterfaceRegistry(encodingConfig.InterfaceRegistry).
@@ -49,13 +51,13 @@ func NewRootCmd() *cobra.Command {
 		WithInput(os.Stdin).
 		WithAccountRetriever(types.AccountRetriever{}).
 		WithBroadcastMode(flags.FlagBroadcastMode).
-		WithHomeDir(app.DefaultNodeHome).
+		WithHomeDir(chaincfg.DefaultNodeHome).
 		WithKeyringOptions(hd.EthSecp256k1Option()).
-		WithViper(EnvPrefix)
+		WithViper(chaincfg.EnvPrefix)
 
 	rootCmd := &cobra.Command{
-		Use:   "kava",
+		Use:   chaincfg.AppName,
-		Short: "Daemon and CLI for the Kava blockchain.",
+		Short: "Daemon and CLI for the 0g-chain blockchain.",
 		PersistentPreRunE: func(cmd *cobra.Command, _ []string) error {
 			cmd.SetOut(cmd.OutOrStdout())
 			cmd.SetErr(cmd.ErrOrStderr())
@@ -74,7 +76,7 @@ func NewRootCmd() *cobra.Command {
 				return err
 			}
 
-			customAppTemplate, customAppConfig := servercfg.AppConfig("ukava")
+			customAppTemplate, customAppConfig := servercfg.AppConfig(chaincfg.BaseDenom)
 
 			return server.InterceptConfigsPreRunHandler(
 				cmd,
@@ -85,7 +87,7 @@ func NewRootCmd() *cobra.Command {
 		},
 	}
 
-	addSubCmds(rootCmd, encodingConfig, app.DefaultNodeHome)
+	addSubCmds(rootCmd, encodingConfig, chaincfg.DefaultNodeHome)
 
 	return rootCmd
 }
@@ -126,7 +128,7 @@ func addSubCmds(rootCmd *cobra.Command, encodingConfig params.EncodingConfig, de
 
 	opts := ethermintserver.StartOptions{
 		AppCreator:      ac.newApp,
-		DefaultNodeHome: app.DefaultNodeHome,
+		DefaultNodeHome: chaincfg.DefaultNodeHome,
 		DBOpener:        dbOpener,
 	}
 	// ethermintserver adds additional flags to start the JSON-RPC server for evm support

crypto/vrf/algorithm.go

@@ -0,0 +1,58 @@
+package vrf
+
+import (
+	"github.com/cosmos/cosmos-sdk/crypto/hd"
+	"github.com/cosmos/cosmos-sdk/crypto/keyring"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
+)
+
+var (
+	// SupportedAlgorithms defines the list of signing algorithms used on Evmos:
+	//  - eth_secp256k1 (Ethereum)
+	//  - secp256k1 (Tendermint)
+	SupportedAlgorithms = keyring.SigningAlgoList{VrfAlgo}
+	// SupportedAlgorithmsLedger defines the list of signing algorithms used on Evmos for the Ledger device:
+	//  - eth_secp256k1 (Ethereum)
+	//  - secp256k1 (Tendermint)
+	SupportedAlgorithmsLedger = keyring.SigningAlgoList{VrfAlgo}
+)
+
+func VrfOption() keyring.Option {
+	return func(options *keyring.Options) {
+		options.SupportedAlgos = SupportedAlgorithms
+		options.SupportedAlgosLedger = SupportedAlgorithmsLedger
+	}
+}
+
+const (
+	VrfType = hd.PubKeyType(KeyType)
+)
+
+var (
+	_       keyring.SignatureAlgo = VrfAlgo
+	VrfAlgo                       = vrfAlgo{}
+)
+
+type vrfAlgo struct{}
+
+func (s vrfAlgo) Name() hd.PubKeyType {
+	return VrfType
+}
+
+func (s vrfAlgo) Derive() hd.DeriveFn {
+	return func(mnemonic, bip39Passphrase, path string) ([]byte, error) {
+		key, err := GenerateKey()
+		if err != nil {
+			return nil, err
+		}
+
+		return key.Bytes(), nil
+	}
+}
+
+func (s vrfAlgo) Generate() hd.GenerateFn {
+	return func(bz []byte) cryptotypes.PrivKey {
+		key, _ := GenerateKey()
+		return key
+	}
+}

crypto/vrf/keys.pb.go

@@ -0,0 +1,496 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: crypto/vrf/keys.proto
+
+package vrf
+
+import (
+	fmt "fmt"
+	_ "github.com/gogo/protobuf/gogoproto"
+	proto "github.com/gogo/protobuf/proto"
+	io "io"
+	math "math"
+	math_bits "math/bits"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
+
+// PubKey defines a type alias for an vrf.PublicKey that implements
+// Vrf's PubKey interface. It represents the 32-byte compressed public
+// key format.
+type PubKey struct {
+	// key is the public key in byte form
+	Key []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (m *PubKey) Reset()      { *m = PubKey{} }
+func (*PubKey) ProtoMessage() {}
+func (*PubKey) Descriptor() ([]byte, []int) {
+	return fileDescriptor_eae59d1af27f5957, []int{0}
+}
+func (m *PubKey) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *PubKey) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_PubKey.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *PubKey) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_PubKey.Merge(m, src)
+}
+func (m *PubKey) XXX_Size() int {
+	return m.Size()
+}
+func (m *PubKey) XXX_DiscardUnknown() {
+	xxx_messageInfo_PubKey.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_PubKey proto.InternalMessageInfo
+
+func (m *PubKey) GetKey() []byte {
+	if m != nil {
+		return m.Key
+	}
+	return nil
+}
+
+// PrivKey defines a type alias for an vrf.PrivateKey that implements
+// Vrf's PrivateKey interface.
+type PrivKey struct {
+	// key is the private key in byte form
+	Key []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (m *PrivKey) Reset()         { *m = PrivKey{} }
+func (m *PrivKey) String() string { return proto.CompactTextString(m) }
+func (*PrivKey) ProtoMessage()    {}
+func (*PrivKey) Descriptor() ([]byte, []int) {
+	return fileDescriptor_eae59d1af27f5957, []int{1}
+}
+func (m *PrivKey) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *PrivKey) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_PrivKey.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *PrivKey) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_PrivKey.Merge(m, src)
+}
+func (m *PrivKey) XXX_Size() int {
+	return m.Size()
+}
+func (m *PrivKey) XXX_DiscardUnknown() {
+	xxx_messageInfo_PrivKey.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_PrivKey proto.InternalMessageInfo
+
+func (m *PrivKey) GetKey() []byte {
+	if m != nil {
+		return m.Key
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*PubKey)(nil), "crypto.vrf.PubKey")
+	proto.RegisterType((*PrivKey)(nil), "crypto.vrf.PrivKey")
+}
+
+func init() { proto.RegisterFile("crypto/vrf/keys.proto", fileDescriptor_eae59d1af27f5957) }
+
+var fileDescriptor_eae59d1af27f5957 = []byte{
+	// 174 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0x4d, 0x2e, 0xaa, 0x2c,
+	0x28, 0xc9, 0xd7, 0x2f, 0x2b, 0x4a, 0xd3, 0xcf, 0x4e, 0xad, 0x2c, 0xd6, 0x2b, 0x28, 0xca, 0x2f,
+	0xc9, 0x17, 0xe2, 0x82, 0x08, 0xeb, 0x95, 0x15, 0xa5, 0x49, 0x89, 0xa4, 0xe7, 0xa7, 0xe7, 0x83,
+	0x85, 0xf5, 0x41, 0x2c, 0x88, 0x0a, 0x25, 0x05, 0x2e, 0xb6, 0x80, 0xd2, 0x24, 0xef, 0xd4, 0x4a,
+	0x21, 0x01, 0x2e, 0xe6, 0xec, 0xd4, 0x4a, 0x09, 0x46, 0x05, 0x46, 0x0d, 0x9e, 0x20, 0x10, 0xd3,
+	0x8a, 0x65, 0xc6, 0x02, 0x79, 0x06, 0x25, 0x69, 0x2e, 0xf6, 0x80, 0xa2, 0xcc, 0x32, 0xac, 0x4a,
+	0x9c, 0xec, 0x4f, 0x3c, 0x92, 0x63, 0xbc, 0xf0, 0x48, 0x8e, 0xf1, 0xc1, 0x23, 0x39, 0xc6, 0x09,
+	0x8f, 0xe5, 0x18, 0x2e, 0x3c, 0x96, 0x63, 0xb8, 0xf1, 0x58, 0x8e, 0x21, 0x4a, 0x35, 0x3d, 0xb3,
+	0x24, 0xa3, 0x34, 0x49, 0x2f, 0x39, 0x3f, 0x57, 0xdf, 0x20, 0x3d, 0x27, 0x31, 0xa9, 0x58, 0xdf,
+	0x20, 0x5d, 0x37, 0x39, 0x23, 0x31, 0x33, 0x4f, 0x1f, 0xe1, 0xd8, 0x24, 0x36, 0xb0, 0x33, 0x8c,
+	0x01, 0x01, 0x00, 0x00, 0xff, 0xff, 0xdb, 0xb8, 0x32, 0x07, 0xc1, 0x00, 0x00, 0x00,
+}
+
+func (m *PubKey) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *PubKey) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *PubKey) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Key) > 0 {
+		i -= len(m.Key)
+		copy(dAtA[i:], m.Key)
+		i = encodeVarintKeys(dAtA, i, uint64(len(m.Key)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *PrivKey) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *PrivKey) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *PrivKey) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Key) > 0 {
+		i -= len(m.Key)
+		copy(dAtA[i:], m.Key)
+		i = encodeVarintKeys(dAtA, i, uint64(len(m.Key)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func encodeVarintKeys(dAtA []byte, offset int, v uint64) int {
+	offset -= sovKeys(v)
+	base := offset
+	for v >= 1<<7 {
+		dAtA[offset] = uint8(v&0x7f | 0x80)
+		v >>= 7
+		offset++
+	}
+	dAtA[offset] = uint8(v)
+	return base
+}
+func (m *PubKey) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Key)
+	if l > 0 {
+		n += 1 + l + sovKeys(uint64(l))
+	}
+	return n
+}
+
+func (m *PrivKey) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Key)
+	if l > 0 {
+		n += 1 + l + sovKeys(uint64(l))
+	}
+	return n
+}
+
+func sovKeys(x uint64) (n int) {
+	return (math_bits.Len64(x|1) + 6) / 7
+}
+func sozKeys(x uint64) (n int) {
+	return sovKeys(uint64((x << 1) ^ uint64((int64(x) >> 63))))
+}
+func (m *PubKey) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowKeys
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: PubKey: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: PubKey: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Key", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowKeys
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthKeys
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthKeys
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Key = append(m.Key[:0], dAtA[iNdEx:postIndex]...)
+			if m.Key == nil {
+				m.Key = []byte{}
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipKeys(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthKeys
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *PrivKey) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowKeys
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: PrivKey: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: PrivKey: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Key", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowKeys
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthKeys
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthKeys
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Key = append(m.Key[:0], dAtA[iNdEx:postIndex]...)
+			if m.Key == nil {
+				m.Key = []byte{}
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipKeys(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthKeys
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func skipKeys(dAtA []byte) (n int, err error) {
+	l := len(dAtA)
+	iNdEx := 0
+	depth := 0
+	for iNdEx < l {
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return 0, ErrIntOverflowKeys
+			}
+			if iNdEx >= l {
+				return 0, io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		wireType := int(wire & 0x7)
+		switch wireType {
+		case 0:
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowKeys
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				iNdEx++
+				if dAtA[iNdEx-1] < 0x80 {
+					break
+				}
+			}
+		case 1:
+			iNdEx += 8
+		case 2:
+			var length int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return 0, ErrIntOverflowKeys
+				}
+				if iNdEx >= l {
+					return 0, io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				length |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if length < 0 {
+				return 0, ErrInvalidLengthKeys
+			}
+			iNdEx += length
+		case 3:
+			depth++
+		case 4:
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupKeys
+			}
+			depth--
+		case 5:
+			iNdEx += 4
+		default:
+			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
+		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthKeys
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
+	}
+	return 0, io.ErrUnexpectedEOF
+}
+
+var (
+	ErrInvalidLengthKeys        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowKeys          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupKeys = fmt.Errorf("proto: unexpected end of group")
+)

crypto/vrf/vrf.go

@@ -0,0 +1,194 @@
+package vrf
+
+import (
+	"bytes"
+	"crypto/subtle"
+	"fmt"
+
+	errorsmod "cosmossdk.io/errors"
+	vrfalgo "github.com/coniks-sys/coniks-go/crypto/vrf"
+	"github.com/cosmos/cosmos-sdk/codec"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
+	errortypes "github.com/cosmos/cosmos-sdk/types/errors"
+	"github.com/ethereum/go-ethereum/common"
+	tmcrypto "github.com/tendermint/tendermint/crypto"
+)
+
+const (
+	// PrivKeySize defines the size of the PrivKey bytes
+	PrivKeySize = 64
+	// PubKeySize defines the size of the PubKey bytes
+	PubKeySize = 32
+	// KeyType is the string constant for the vrf algorithm
+	KeyType = "vrf"
+)
+
+// Amino encoding names
+const (
+	// PrivKeyName defines the amino encoding name for the vrf private key
+	PrivKeyName = "vrf/PrivKey"
+	// PubKeyName defines the amino encoding name for the vrf public key
+	PubKeyName = "vrf/PubKey"
+)
+
+// ----------------------------------------------------------------------------
+// vrf Private Key
+
+var (
+	_ cryptotypes.PrivKey  = &PrivKey{}
+	_ codec.AminoMarshaler = &PrivKey{}
+)
+
+// GenerateKey generates a new random private key. It returns an error upon
+// failure.
+func GenerateKey() (*PrivKey, error) {
+	priv, err := vrfalgo.GenerateKey(nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return &PrivKey{
+		Key: priv,
+	}, nil
+}
+
+func (privKey PrivKey) getVrfPrivateKey() vrfalgo.PrivateKey {
+	return vrfalgo.PrivateKey(privKey.Key)
+}
+
+// Bytes returns the byte representation of the Private Key.
+func (privKey PrivKey) Bytes() []byte {
+	bz := make([]byte, len(privKey.Key))
+	copy(bz, privKey.Key)
+
+	return bz
+}
+
+// PubKey returns the private key's public key. If the privkey is not valid
+// it returns a nil value.
+func (privKey PrivKey) PubKey() cryptotypes.PubKey {
+	pk, _ := vrfalgo.PrivateKey(privKey.Key).Public()
+
+	return &PubKey{
+		Key: pk,
+	}
+}
+
+// Equals returns true if two private keys are equal and false otherwise.
+func (privKey PrivKey) Equals(other cryptotypes.LedgerPrivKey) bool {
+	return privKey.Type() == other.Type() && subtle.ConstantTimeCompare(privKey.Bytes(), other.Bytes()) == 1
+}
+
+// Type returns vrf
+func (privKey PrivKey) Type() string {
+	return KeyType
+}
+
+// Compute generates the vrf value for the byte slice m using the
+// underlying private key sk.
+func (privKey PrivKey) Sign(digestBz []byte) ([]byte, error) {
+	sk := privKey.getVrfPrivateKey()
+
+	return sk.Compute(digestBz), nil
+}
+
+// MarshalAmino overrides Amino binary marshaling.
+func (privKey PrivKey) MarshalAmino() ([]byte, error) {
+	return privKey.Key, nil
+}
+
+// UnmarshalAmino overrides Amino binary marshaling.
+func (privKey *PrivKey) UnmarshalAmino(bz []byte) error {
+	if len(bz) != PrivKeySize {
+		return fmt.Errorf("invalid privkey size, expected %d got %d", PrivKeySize, len(bz))
+	}
+	privKey.Key = bz
+
+	return nil
+}
+
+// MarshalAminoJSON overrides Amino JSON marshaling.
+func (privKey PrivKey) MarshalAminoJSON() ([]byte, error) {
+	// When we marshal to Amino JSON, we don't marshal the "key" field itself,
+	// just its contents (i.e. the key bytes).
+	return privKey.MarshalAmino()
+}
+
+// UnmarshalAminoJSON overrides Amino JSON marshaling.
+func (privKey *PrivKey) UnmarshalAminoJSON(bz []byte) error {
+	return privKey.UnmarshalAmino(bz)
+}
+
+// ----------------------------------------------------------------------------
+// vrf Public Key
+
+var (
+	_ cryptotypes.PubKey   = &PubKey{}
+	_ codec.AminoMarshaler = &PubKey{}
+)
+
+// func (pubKey PubKey) getVrfPublicKey() vrfalgo.PublicKey {
+// 	return vrfalgo.PublicKey(pubKey.Key)
+// }
+
+// Address returns the address of the ECDSA public key.
+// The function will return an empty address if the public key is invalid.
+func (pubKey PubKey) Address() tmcrypto.Address {
+	return tmcrypto.Address(common.BytesToAddress(pubKey.Key).Bytes())
+}
+
+// Bytes returns the raw bytes of the ECDSA public key.
+func (pubKey PubKey) Bytes() []byte {
+	bz := make([]byte, len(pubKey.Key))
+	copy(bz, pubKey.Key)
+
+	return bz
+}
+
+// String implements the fmt.Stringer interface.
+func (pubKey PubKey) String() string {
+	return fmt.Sprintf("vrf{%X}", pubKey.Key)
+}
+
+// Type returns vrf
+func (pubKey PubKey) Type() string {
+	return KeyType
+}
+
+// Equals returns true if the pubkey type is the same and their bytes are deeply equal.
+func (pubKey PubKey) Equals(other cryptotypes.PubKey) bool {
+	return pubKey.Type() == other.Type() && bytes.Equal(pubKey.Bytes(), other.Bytes())
+}
+
+// Verify returns true iff vrf=Compute(m) for the sk that
+// corresponds to pk.
+func (pubKey PubKey) VerifySignature(msg, sig []byte) bool {
+	panic("not implement")
+}
+
+// MarshalAmino overrides Amino binary marshaling.
+func (pubKey PubKey) MarshalAmino() ([]byte, error) {
+	return pubKey.Key, nil
+}
+
+// UnmarshalAmino overrides Amino binary marshaling.
+func (pubKey *PubKey) UnmarshalAmino(bz []byte) error {
+	if len(bz) != PubKeySize {
+		return errorsmod.Wrapf(errortypes.ErrInvalidPubKey, "invalid pubkey size, expected %d, got %d", PubKeySize, len(bz))
+	}
+	pubKey.Key = bz
+
+	return nil
+}
+
+// MarshalAminoJSON overrides Amino JSON marshaling.
+func (pubKey PubKey) MarshalAminoJSON() ([]byte, error) {
+	// When we marshal to Amino JSON, we don't marshal the "key" field itself,
+	// just its contents (i.e. the key bytes).
+	return pubKey.MarshalAmino()
+}
+
+// UnmarshalAminoJSON overrides Amino JSON marshaling.
+func (pubKey *PubKey) UnmarshalAminoJSON(bz []byte) error {
+	return pubKey.UnmarshalAmino(bz)
+}

crypto/vrf/vrf_test.go

@@ -0,0 +1,96 @@
+package vrf
+
+import (
+	"testing"
+
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
+
+	"encoding/base64"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+)
+
+func TestPrivKey(t *testing.T) {
+	// validate type and equality
+	privKey, err := GenerateKey()
+	require.NoError(t, err)
+	require.Implements(t, (*cryptotypes.PrivKey)(nil), privKey)
+
+	// validate inequality
+	privKey2, err := GenerateKey()
+	require.NoError(t, err)
+	require.False(t, privKey.Equals(privKey2))
+}
+
+func TestPrivKey_PubKey(t *testing.T) {
+	privKey, err := GenerateKey()
+	require.NoError(t, err)
+
+	// validate type and equality
+	pubKey := &PubKey{
+		Key: privKey.PubKey().Bytes(),
+	}
+	require.Implements(t, (*cryptotypes.PubKey)(nil), pubKey)
+
+	// validate inequality
+	privKey2, err := GenerateKey()
+	require.NoError(t, err)
+	require.False(t, pubKey.Equals(privKey2.PubKey()))
+}
+
+func TestMarshalAmino(t *testing.T) {
+	aminoCdc := codec.NewLegacyAmino()
+	privKey, err := GenerateKey()
+	require.NoError(t, err)
+
+	pubKey := privKey.PubKey().(*PubKey)
+
+	testCases := []struct {
+		desc      string
+		msg       codec.AminoMarshaler
+		typ       interface{}
+		expBinary []byte
+		expJSON   string
+	}{
+		{
+			"vrf private key",
+			privKey,
+			&PrivKey{},
+			append([]byte{64}, privKey.Bytes()...), // Length-prefixed.
+			"\"" + base64.StdEncoding.EncodeToString(privKey.Bytes()) + "\"",
+		},
+		{
+			"vrf public key",
+			pubKey,
+			&PubKey{},
+			append([]byte{32}, pubKey.Bytes()...), // Length-prefixed.
+			"\"" + base64.StdEncoding.EncodeToString(pubKey.Bytes()) + "\"",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.desc, func(t *testing.T) {
+			// Do a round trip of encoding/decoding binary.
+			bz, err := aminoCdc.Marshal(tc.msg)
+			require.NoError(t, err)
+			require.Equal(t, tc.expBinary, bz)
+
+			err = aminoCdc.Unmarshal(bz, tc.typ)
+			require.NoError(t, err)
+
+			require.Equal(t, tc.msg, tc.typ)
+
+			// Do a round trip of encoding/decoding JSON.
+			bz, err = aminoCdc.MarshalJSON(tc.msg)
+			require.NoError(t, err)
+			require.Equal(t, tc.expJSON, string(bz))
+
+			err = aminoCdc.UnmarshalJSON(bz, tc.typ)
+			require.NoError(t, err)
+
+			require.Equal(t, tc.msg, tc.typ)
+		})
+	}
+}

go.sum

@@ -401,6 +401,8 @@ github.com/coinbase/rosetta-sdk-go v0.7.9 h1:lqllBjMnazTjIqYrOGv8h8jxjg9+hJazIGZ
 github.com/coinbase/rosetta-sdk-go v0.7.9/go.mod h1:0/knutI7XGVqXmmH4OQD8OckFrbQ8yMsUZTG7FXCR2M=
 github.com/confio/ics23/go v0.9.0 h1:cWs+wdbS2KRPZezoaaj+qBleXgUk5WOQFMP3CQFGTr4=
 github.com/confio/ics23/go v0.9.0/go.mod h1:4LPZ2NYqnYIVRklaozjNR1FScgDJ2s5Xrp+e/mYVRak=
+github.com/coniks-sys/coniks-go v0.0.0-20180722014011-11acf4819b71 h1:MFLTqgfJclmtaQ1SRUrWwmDX/1UBok3XWUethkJ2swQ=
+github.com/coniks-sys/coniks-go v0.0.0-20180722014011-11acf4819b71/go.mod h1:TrHYHH4Wze7v7Hkwu1MH1W+mCPQKM+gs+PicdEV14o8=
 github.com/consensys/bavard v0.1.8-0.20210406032232-f3452dc9b572/go.mod h1:Bpd0/3mZuaj6Sj+PqrmIquiOKy397AKGThQPaGzNXAQ=
 github.com/consensys/bavard v0.1.8-0.20210915155054-088da2f7f54a/go.mod h1:9ItSMtA/dXMAiL7BG6bqW2m3NdSEObYWoH223nGHukI=
 github.com/consensys/gnark-crypto v0.4.1-0.20210426202927-39ac3d4b3f1f/go.mod h1:815PAHg3wvysy0SyIqanF8gZ0Y1wjk/hrDHD/iT88+Q=

proto/crypto/vrf/keys.proto

@@ -0,0 +1,25 @@
+// Copyright Tharsis Labs Ltd.(Evmos)
+// SPDX-License-Identifier:ENCL-1.0(https://github.com/evmos/evmos/blob/main/LICENSE)
+syntax = "proto3";
+package crypto.vrf;
+
+import "gogoproto/gogo.proto";
+
+option go_package = "github.com/0glabs/0g-chain/crypto/vrf";
+
+// PubKey defines a type alias for an vrf.PublicKey that implements
+// Vrf's PubKey interface. It represents the 32-byte compressed public
+// key format.
+message PubKey {
+  option (gogoproto.goproto_stringer) = false;
+
+  // key is the public key in byte form
+  bytes key = 1;
+}
+
+// PrivKey defines a type alias for an vrf.PrivateKey that implements
+// Vrf's PrivateKey interface.
+message PrivKey {
+  // key is the private key in byte form
+  bytes key = 1;
+}