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package main
// A key generator that generates magic keys
// go run sm-ipmi-key.go
import (
"crypto/hmac"
"crypto/sha1"
"encoding/hex"
"fmt"
"os"
"strings"
)
const secretKey = "8544E3B47ECA58F9583043F8"
func mustUnhex(s string) []byte {
o, err := hex.DecodeString(s)
if err != nil {
panic(err)
}
return o
}
func main() {
// Cleanup mac
mac := strings.ReplaceAll(strings.ToLower(os.Args[1]), ":", "")
// Create hash
hash := hmac.New(sha1.New, mustUnhex(secretKey))
hash.Write(mustUnhex(mac))
res := hex.EncodeToString(hash.Sum(nil))
// Cut into groups of 4 characters
out := make([]string, 24/4)
for i := 0; i < 24/4; i++ {
out[i] = res[:24][i*4 : i*4+4]
}
// Print the groups with spaces between them
fmt.Println(strings.Join(out, " "))
}
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