blockchain

package
v0.0.0-...-b8d1fed Latest Latest
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 Go to latest Published: Oct 10, 2019 License: MIT Imports: 21 Imported by: 0

Documentation

Index

Constants

View Source 
const Difficulty = 12

PoW difficulty

Variables

This section is empty.

Functions

func DBExists 

func DBExists(path string) bool

func Handle 

func Handle(err error)

func ToHex 

func ToHex(num int64) []byte

Types

type Block 

type Block struct {
	Timestamp    int64
	Hash         []byte
	Transactions []*Transaction
	PrevHash     []byte
	Nonce        int
	Height       int
}

func CreateBlock 

func CreateBlock(txs []*Transaction, prevHash []byte, height int) *Block

func Deserialize 

func Deserialize(data []byte) *Block

func Genesis 

func Genesis(coinbase *Transaction) *Block

func (*Block) HashTransactions 

func (b *Block) HashTransactions() []byte

func (*Block) Serialize 

func (b *Block) Serialize() []byte

type BlockChain 

type BlockChain struct {
	LastHash []byte
	Database *database.Database
}

func ContinueBlockChain 

func ContinueBlockChain(nodeId string) *BlockChain

func InitBlockChain 

func InitBlockChain(address, nodeId string) *BlockChain

func (*BlockChain) AddBlock 

func (chain *BlockChain) AddBlock(block *Block)

func (*BlockChain) FindSpendableOutputs 

func (chain *BlockChain) FindSpendableOutputs(pubKeyHash []byte, amount int) (int, map[string][]int)

func (*BlockChain) FindTransaction 

func (chain *BlockChain) FindTransaction(ID []byte) (Transaction, error)

func (*BlockChain) FindUTXO 

func (chain *BlockChain) FindUTXO() map[string]TxOutputs

Finds unspent transaction outputs Unspent means that these outputs were not referenced in any inputs

func (*BlockChain) FindUnspentTransactions 

func (chain *BlockChain) FindUnspentTransactions(pubKeyHash []byte) []Transaction

func (*BlockChain) GetBestHeight 

func (chain *BlockChain) GetBestHeight() int

func (*BlockChain) GetBlock 

func (chain *BlockChain) GetBlock(blockHash []byte) (Block, error)

func (*BlockChain) GetBlockHashes 

func (chain *BlockChain) GetBlockHashes() [][]byte

func (*BlockChain) Iterator 

func (chain *BlockChain) Iterator() *ChainIterator

func (*BlockChain) MineBlock 

func (chain *BlockChain) MineBlock(transactions []*Transaction) *Block

func (*BlockChain) SignTransaction 

func (chain *BlockChain) SignTransaction(tx *Transaction, privateKey ecdsa.PrivateKey)

func (*BlockChain) VerifyTransaction 

func (chain *BlockChain) VerifyTransaction(tx *Transaction) bool

type ChainIterator 

type ChainIterator struct {
	CurrentHash []byte
	Database    *database.Database
}

func (*ChainIterator) Next 

func (iter *ChainIterator) Next() *Block

type MerkleNode 

type MerkleNode struct {
	Left  *MerkleNode
	Right *MerkleNode
	Data  []byte
}

func NewMerkleNode 

func NewMerkleNode(left, right *MerkleNode, data []byte) *MerkleNode

type MerkleTree 

type MerkleTree struct {
	RootNode *MerkleNode
}

func NewMerkleTree 

func NewMerkleTree(data [][]byte) *MerkleTree

type ProofOfWork 

type ProofOfWork struct {
	Block  *Block
	Target *big.Int
}

Represents proof of work

func NewProof 

func NewProof(b *Block) *ProofOfWork

Create new PoW

func (*ProofOfWork) InitData 

func (pow *ProofOfWork) InitData(nonce int) []byte

func (*ProofOfWork) Run 

func (pow *ProofOfWork) Run() (int, []byte)

func (*ProofOfWork) Validate 

func (pow *ProofOfWork) Validate() bool

type Transaction 

type Transaction struct {
	ID      []byte
	Inputs  []TxInput
	Outputs []TxOutput
}

func CoinbaseTx 

func CoinbaseTx(to, data string) *Transaction

func DeserializeTransaction 

func DeserializeTransaction(data []byte) Transaction

func NewTransaction 

func NewTransaction(w *wallet.Wallet, to string, amount int, UTXO *UTXOSet) *Transaction

func (*Transaction) Hash 

func (tx *Transaction) Hash() []byte

func (*Transaction) IsCoinbase 

func (tx *Transaction) IsCoinbase() bool

func (Transaction) Serialize 

func (tx Transaction) Serialize() []byte

func (*Transaction) Sign 

func (tx *Transaction) Sign(privateKey ecdsa.PrivateKey, prevTXs map[string]Transaction)

func (Transaction) String 

func (tx Transaction) String() string

func (*Transaction) TrimmedCopy 

func (tx *Transaction) TrimmedCopy() Transaction

func (*Transaction) Verify 

func (tx *Transaction) Verify(prevTXs map[string]Transaction) bool

type TxInput 

type TxInput struct {
	ID        []byte
	Out       int
	Signature []byte
	PubKey    []byte
}

func (*TxInput) UsesKey 

func (in *TxInput) UsesKey(pubKeyHash []byte) bool

type TxOutput 

type TxOutput struct {
	Value      int
	PubKeyHash []byte
}

func NewTXOutput 

func NewTXOutput(value int, address string) *TxOutput

func (*TxOutput) IsLockedWithKey 

func (out *TxOutput) IsLockedWithKey(pubKeyHash []byte) bool

func (*TxOutput) Lock 

func (out *TxOutput) Lock(address []byte)

type TxOutputs 

type TxOutputs struct {
	Outputs []TxOutput
}

func DeserializeOutputs 

func DeserializeOutputs(data []byte) TxOutputs

func (TxOutputs) Serialize 

func (outs TxOutputs) Serialize() []byte

type UTXOSet 

type UTXOSet struct {
	BlockChain *BlockChain
}

func (UTXOSet) CountTransactions 

func (u UTXOSet) CountTransactions() int

func (*UTXOSet) DeleteByPrefix 

func (u *UTXOSet) DeleteByPrefix(prefix []byte)

func (UTXOSet) FindSpendableOutputs 

func (u UTXOSet) FindSpendableOutputs(pubKeyHash []byte, amount int) (int, map[string][]int)

func (UTXOSet) FindUTXO 

func (u UTXOSet) FindUTXO(pubKeyHash []byte) []TxOutput

func (UTXOSet) FindUnspentTransactions 

func (u UTXOSet) FindUnspentTransactions(pubKeyHash []byte) []TxOutput

func (UTXOSet) Reindex 

func (u UTXOSet) Reindex()

func (*UTXOSet) Update 

func (u *UTXOSet) Update(block *Block)

Source Files

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