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39 lines
885 B
39 lines
885 B
package main
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import (
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"bytes"
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"crypto/sha256"
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"strconv"
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"time"
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)
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// Block keeps block headers
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type Block struct {
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Timestamp int64
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utxoPool []UTXOPool
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PrevBlockHash []byte
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Hash []byte
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}
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//SetHash calculates and sets block hash
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func (b *Block) SetHash() {
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timestamp := []byte(strconv.FormatInt(b.Timestamp, 10))
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// headers := bytes.Join([][]byte{b.PrevBlockHash, b.Data, timestamp}, []byte{})
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headers := bytes.Join([][]byte{b.PrevBlockHash, timestamp}, []byte{})
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hash := sha256.Sum256(headers)
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b.Hash = hash[:]
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}
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// NewBlock creates and returns Block
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func NewBlock(utxoPool []UTXOPool, prevBlockHash []byte) *Block {
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block := &Block{time.Now().Unix(), utxoPool, prevBlockHash, []byte{}}
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block.SetHash()
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return block
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}
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// NewGenesisBlock creates and returns genesis Block
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func NewGenesisBlock() *Block {
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return NewBlock([]UTXOPool{}, []byte{})
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}
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