1 files changed, 42 insertions, 0 deletions

diff --git a/bin/sm-ipmi-key.go b/bin/sm-ipmi-key.go
new file mode 100644
index 0000000..7477e89
--- /dev/null
+++ b/bin/sm-ipmi-key.go
@@ -0,0 +1,42 @@
+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, " "))
+}