castagnoli-test.go

package main

import (
  "hash/crc32"
  "fmt"
  "os"
)

func main() {
  table := crc32.MakeTable(crc32.Castagnoli)
  hash := crc32.New(table)
  path := "/Users/steve/Downloads/Trine_Setup_109.zip"

  file, err := os.Open(path)

  if (err != nil) {
    return
  }

  bufLen := 1048576

  buf := make([]byte, bufLen)

  n, err := file.Read(buf)

  for err == nil {

    hash.Write(buf[0:n])

    n, err = file.Read(buf)

  }

  err = file.Close()

  var checksum = hash.Sum()

  fmt.Printf("%s: %x\n", path, checksum)
}