blockchain

package

v0.0.0-...-5fb01ef Latest Latest Go to latest Published: Aug 19, 2018 License: MIT Imports: 8 Imported by: 0

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Repository

github.com/alholm/akhcoin

Links

Open Source Insights

Documentation ¶

Index ¶

func CurrentTime() time.Time
func GetTimeStamp() int64
func Hash(bytes []byte) string
func HashStr(str string) string
func NewKeys() (crypto.PrivKey, crypto.PubKey, error)
type Block
- func CreateGenesis() *Block
- func NewBlock(privateKey crypto.PrivKey, parent *Block, transactions []Transaction, ...) *Block
type BlockData
- func (block *BlockData) GetCorpus() *bytes.Buffer
- func (block *BlockData) String() string
- func (block *BlockData) Verify(parent *BlockData) (valid bool, err error)
type Signable
type Transaction
- func Pay(private crypto.PrivKey, recipient peer.ID, amount uint64) *Transaction
- func (t *Transaction) GetCorpus() *bytes.Buffer
- func (t *Transaction) String() string
- func (t *Transaction) Verify() (result bool, err error)
type Transactions
type Unit
- func (u *Unit) GetCorpus() *bytes.Buffer
- func (u *Unit) GetPublicKey() []byte
- func (u *Unit) GetSign() []byte
- func (u *Unit) GetSigner() string
- func (u *Unit) GetTimestamp() int64
type Vote
- func NewVote(private crypto.PrivKey, candidate peer.ID) *Vote
- func (v *Vote) GetCorpus() *bytes.Buffer
- func (v *Vote) String() string
- func (v *Vote) Verify() (result bool, err error)
type Votes

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func CurrentTime ¶

func CurrentTime() time.Time

TODO implement network time adjustment

func GetTimeStamp ¶

func GetTimeStamp() int64

GetTimeStamp returns current timestamp

func Hash ¶

func Hash(bytes []byte) string

func HashStr ¶

func HashStr(str string) string

func NewKeys ¶

func NewKeys() (crypto.PrivKey, crypto.PubKey, error)

Types ¶

type Block ¶

type Block struct {
	BlockData
	Parent *Block
	Next   *Block
}

func CreateGenesis ¶

func CreateGenesis() *Block

func NewBlock ¶

func NewBlock(privateKey crypto.PrivKey, parent *Block, transactions []Transaction, votes []Vote) *Block

Example ¶

viper.Set("reward", 50)

priv, _, _ := NewKeys()
t := Pay(priv, peer.ID("some"), 42)
v := NewVote(priv, "other")

parent := CreateGenesis()
block := NewBlock(priv, parent, []Transaction{*t}, []Vote{*v})

verified, _ := block.Verify(&parent.BlockData)
fmt.Println(verified)

block.Reward = 100
verified, _ = block.Verify(&parent.BlockData)
fmt.Println(verified)

block.Reward = 50
block.Transactions[0].Amount = 0
verified, _ = block.Verify(&parent.BlockData)
fmt.Println(verified)

block.Transactions[0].Amount = 42
block.Votes[0].Candidate = "third"
verified, _ = block.Verify(&parent.BlockData)
fmt.Println(verified)

Output:

true
false
false
false

type BlockData ¶

type BlockData struct {
	Unit
	ParentHash   string
	Transactions Transactions
	Votes        Votes
	Reward       uint
}

func (*BlockData) GetCorpus ¶

func (block *BlockData) GetCorpus() *bytes.Buffer

func (*BlockData) String ¶

func (block *BlockData) String() string

func (*BlockData) Verify ¶

func (block *BlockData) Verify(parent *BlockData) (valid bool, err error)

Block contents verification. Checks basic cryptography and transactions timing

type Signable ¶

type Signable interface {
	GetSigner() string //getters have not conventional form as would interfere with fields names, which can not be private, or would require a lot of setters
	GetPublicKey() []byte
	GetCorpus() *bytes.Buffer
	GetSign() []byte
	GetTimestamp() int64
}

type Transaction ¶

type Transaction struct {
	Unit
	Recipient string
	Amount    uint64
}

Example ¶

priv, _, _ := NewKeys()
t := Pay(priv, peer.ID("some"), 42)
verified, _ := verify(t)
fmt.Println(verified)
t.Amount++
verified, _ = verify(t)
fmt.Println(verified)

Output:

true
false

func Pay ¶

func Pay(private crypto.PrivKey, recipient peer.ID, amount uint64) *Transaction

func (*Transaction) GetCorpus ¶

func (t *Transaction) GetCorpus() *bytes.Buffer

func (*Transaction) String ¶

func (t *Transaction) String() string

func (*Transaction) Verify ¶

func (t *Transaction) Verify() (result bool, err error)

type Transactions ¶

type Transactions []Transaction

type Unit ¶

type Unit struct {
	Signable
	Hash      string
	Signer    string
	Sign      []byte
	PublicKey []byte
	TimeStamp int64
}

Basic Unit that can be presented in blockchain All fields should be public to be (de)serialize

func (*Unit) GetCorpus ¶

func (u *Unit) GetCorpus() *bytes.Buffer

func (*Unit) GetPublicKey ¶

func (u *Unit) GetPublicKey() []byte

func (*Unit) GetSign ¶

func (u *Unit) GetSign() []byte

func (*Unit) GetSigner ¶

func (u *Unit) GetSigner() string

func (*Unit) GetTimestamp ¶

func (u *Unit) GetTimestamp() int64

type Vote ¶

type Vote struct {
	Unit
	Candidate string
}

func NewVote ¶

func NewVote(private crypto.PrivKey, candidate peer.ID) *Vote

func (*Vote) GetCorpus ¶

func (v *Vote) GetCorpus() *bytes.Buffer

func (*Vote) String ¶

func (v *Vote) String() string

func (*Vote) Verify ¶

func (v *Vote) Verify() (result bool, err error)

type Votes ¶

type Votes []Vote

Source Files ¶

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