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Implement block and transaction primitives

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This commit is contained in:
ChronosX88 2021-05-12 22:34:14 +03:00
parent 90d1e6d2ad
commit 0bc8371f84
Signed by: ChronosXYZ
GPG Key ID: 085A69A82C8C511A
5 changed files with 115 additions and 2 deletions
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1
go.mod
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@ -55,6 +55,7 @@ require (
github.com/stretchr/testify v1.7.0
github.com/tyler-smith/go-bip39 v1.1.0 // indirect
github.com/valyala/fasthttp v1.17.0
github.com/wealdtech/go-merkletree v1.0.1-0.20190605192610-2bb163c2ea2a // indirect
github.com/whyrusleeping/cbor-gen v0.0.0-20210219115102-f37d292932f2
github.com/xorcare/golden v0.6.1-0.20191112154924-b87f686d7542
go.uber.org/zap v1.16.0

7
go.sum
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@ -44,6 +44,7 @@ github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbt
github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/CurtisLusmore/ghp v0.0.0-20190131093722-04a23b486a62/go.mod h1:+iVlyn4r8pVe5rgooNlrYjuzDayoXL5H/JBMhemDs/I=
github.com/DataDog/zstd v1.3.6-0.20190409195224-796139022798/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
@ -1708,6 +1709,10 @@ github.com/warpfork/go-wish v0.0.0-20180510122957-5ad1f5abf436/go.mod h1:x6AKhvS
github.com/warpfork/go-wish v0.0.0-20190328234359-8b3e70f8e830/go.mod h1:x6AKhvSSexNrVSrViXSHUEbICjmGXhtgABaHIySUSGw=
github.com/warpfork/go-wish v0.0.0-20200122115046-b9ea61034e4a h1:G++j5e0OC488te356JvdhaM8YS6nMsjLAYF7JxCv07w=
github.com/warpfork/go-wish v0.0.0-20200122115046-b9ea61034e4a/go.mod h1:x6AKhvSSexNrVSrViXSHUEbICjmGXhtgABaHIySUSGw=
github.com/wealdtech/go-merkletree v1.0.0 h1:DsF1xMzj5rK3pSQM6mPv8jlyJyHXhFxpnA2bwEjMMBY=
github.com/wealdtech/go-merkletree v1.0.0/go.mod h1:cdil512d/8ZC7Kx3bfrDvGMQXB25NTKbsm0rFrmDax4=
github.com/wealdtech/go-merkletree v1.0.1-0.20190605192610-2bb163c2ea2a h1:MwXxGlHLoTCM3/5nlvGJqSWhcmWtGuc6RBtUsTKJwvU=
github.com/wealdtech/go-merkletree v1.0.1-0.20190605192610-2bb163c2ea2a/go.mod h1:Q/vZYhXjtE/oLDRqlGLWwRrNKZJAwidHlVfwIkKEH2w=
github.com/weaveworks/common v0.0.0-20200512154658-384f10054ec5 h1:EYxr08r8x6r/5fLEAMMkida1BVgxVXE4LfZv/XV+znU=
github.com/weaveworks/common v0.0.0-20200512154658-384f10054ec5/go.mod h1:c98fKi5B9u8OsKGiWHLRKus6ToQ1Tubeow44ECO1uxY=
github.com/weaveworks/promrus v1.2.0 h1:jOLf6pe6/vss4qGHjXmGz4oDJQA+AOCqEL3FvvZGz7M=
@ -1842,6 +1847,7 @@ golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnf
golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190123085648-057139ce5d2b/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190131182504-b8fe1690c613/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190225124518-7f87c0fbb88b/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@ -2005,6 +2011,7 @@ golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5h
golang.org/x/sys v0.0.0-20181122145206-62eef0e2fa9b/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190124100055-b90733256f2e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190204203706-41f3e6584952/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190219092855-153ac476189d/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=

79
types/block.go Normal file
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@ -0,0 +1,79 @@
package types
import (
"time"
"github.com/wealdtech/go-merkletree"
"github.com/wealdtech/go-merkletree/keccak256"
"github.com/Secured-Finance/dione/wallet"
"github.com/libp2p/go-libp2p-core/peer"
)
type Block struct {
Header *BlockHeader
Data []*Transaction
}
type BlockHeader struct {
Timestamp int64
SeqNum uint64
Hash []byte
LastHash []byte
Proposer peer.ID
Signature []byte
}
func GenesisBlock() *Block {
return &Block{
Header: &BlockHeader{
Timestamp: 1620845070,
SeqNum: 0,
Hash: []byte("DIMICANDUM"),
},
Data: []*Transaction{},
}
}
func CreateBlock(lastBlockHeader *BlockHeader, txs []*Transaction, wallet *wallet.LocalWallet) (*Block, error) {
timestamp := time.Now().Unix()
proposer, err := wallet.GetDefault()
if err != nil {
return nil, err
}
// extract hashes from transactions
var txHashes [][]byte
for _, tx := range txs {
txHashes = append(txHashes, tx.Hash)
}
txHashes = append(txHashes, lastBlockHeader.Hash)
tree, err := merkletree.NewUsing(txHashes, keccak256.New(), false)
if err != nil {
return nil, err
}
// fetch merkle tree root hash (block hash)
blockHash := tree.Root()
// sign this block hash
s, err := wallet.Sign(proposer, blockHash)
if err != nil {
return nil, err
}
block := &Block{
Header: &BlockHeader{
Timestamp: timestamp,
SeqNum: lastBlockHeader.SeqNum + 1,
Proposer: proposer,
Signature: s.Data,
Hash: blockHash,
LastHash: lastBlockHeader.Hash,
},
Data: txs,
}
return block, nil
}

26
types/transaction.go Normal file
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@ -0,0 +1,26 @@
package types
import (
"encoding/hex"
"fmt"
"time"
"github.com/ethereum/go-ethereum/crypto"
)
type Transaction struct {
Hash []byte
Timestamp int64
Data []byte
}
func CreateTransaction(data []byte) *Transaction {
timestamp := time.Now().Unix()
encodedData := hex.EncodeToString(data)
hash := crypto.Keccak256([]byte(fmt.Sprintf("%d_%s", timestamp, encodedData)))
return &Transaction{
Hash: hash,
Timestamp: timestamp,
Data: data,
}
}

4
wallet/wallet.go
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@ -50,7 +50,7 @@ func KeyWallet(keys ...*Key) *LocalWallet {
}
}
func (w *LocalWallet) WalletSign(ctx context.Context, addr peer.ID, msg []byte) (*types.Signature, error) {
func (w *LocalWallet) Sign(addr peer.ID, msg []byte) (*types.Signature, error) {
ki, err := w.findKey(addr)
if err != nil {
return nil, err
@ -143,7 +143,7 @@ func (w *LocalWallet) GetDefault() (peer.ID, error) {
return k.Address, nil
}
func (w *LocalWallet) WalletNew(ctx context.Context, typ types.KeyType) (peer.ID, error) {
func (w *LocalWallet) NewKey(typ types.KeyType) (peer.ID, error) {
w.lk.Lock()
defer w.lk.Unlock()