feat: add go tpm rand

go-tpm-rand/go.mod

@@ -0,0 +1,7 @@
+module git.hatter.ink/go-tpm-rand
+
+go 1.24.3
+
+require github.com/google/go-tpm v0.9.5
+
+require golang.org/x/sys v0.8.0 // indirect

go-tpm-rand/go.sum

@@ -0,0 +1,4 @@
+github.com/google/go-tpm v0.9.5 h1:ocUmnDebX54dnW+MQWGQRbdaAcJELsa6PqZhJ48KwVU=
+github.com/google/go-tpm v0.9.5/go.mod h1:h9jEsEECg7gtLis0upRBQU+GhYVH6jMjrFxI8u6bVUY=
+golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

go-tpm-rand/main.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/google/go-tpm/legacy/tpm2"
+)
+
+// reference: https://ericchiang.github.io/post/tpm-keys/
+func main() {
+	f, err := os.OpenFile("/dev/tpmrm0", os.O_RDWR, 0)
+	if err != nil {
+		log.Fatalf("opening tpm: %v", err)
+	}
+	defer f.Close()
+
+	out, err := tpm2.GetRandom(f, 16)
+	if err != nil {
+		log.Fatalf("getting random bytes: %v", err)
+	}
+	fmt.Printf("%x\n", out)
+}