为什么我用 go 写的 sha-1，计算没有 git 的快速 sha-1

@julyclyde


package main

import (
"fmt"
"hash/crc64"
"sync"
)

func main() {

var data = []byte{
1, 2, 3, 4, 5, 6, 7, 8,
1, 2, 3, 4, 5, 6, 7, 8,
1, 2, 3, 4, 5, 6, 7, 8,
}

iso := crc64.MakeTable(crc64.ISO)

{
r := crc64.Checksum(data, iso)
fmt.Println(r)
}

{ // concurrent
crc := crc64.New(iso)
wg := &sync.WaitGroup{}
wg.Add(3)

go func() {
crc.Write(data[16:24])
wg.Done()
}()

go func() {
crc.Write(data[0:8])
wg.Done()
}()

go func() {
crc.Write(data[8:16])
wg.Done()
}()

wg.Wait()
fmt.Println(crc.Sum64())
}
}