package hash/crc32
ChecksumIEEE returns the CRC-32 checksum of data using the IEEE polynomial.
Golang hash/crc32.ChecksumIEEE function usage examples
Example 1:
package main
import (
"fmt"
"hash/crc32"
)
func main() {
checksum := crc32.ChecksumIEEE([]byte("abcd"))
fmt.Printf("Checksum : %x \n", checksum)
}
Example 2:
// Check checksum.
var checksum uint32
n, err := fmt.Fscanf(file, "x\n", &checksum)
if err != nil {
fmt.Println(err)
} else if n != 1 {
fmt.Println("checksum.err: bad.snapshot.file")
}
// Load remaining snapshot contents.
b, err := ioutil.ReadAll(file)
if err != nil {
fmt.Println(err)
}
// Generate checksum.
byteChecksum := crc32.ChecksumIEEE(b)
if uint32(checksum) != byteChecksum {
fmt.Println("bad snapshot file")
}
References :
https://github.com/goraft/raft/blob/master/server.go
http://golang.org/pkg/hash/crc32/#ChecksumIEEE
