From dc85c97f3730b066f3603081d21df67349f9a84d Mon Sep 17 00:00:00 2001
From: Rutger Broekhoff
Date: Sat, 30 Dec 2023 15:49:47 +0100
Subject: Add command for generating ED25519 keypairs

---
 cmd/gitolfs3-gen-ed25519-key/main.go | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 cmd/gitolfs3-gen-ed25519-key/main.go

(limited to 'cmd/gitolfs3-gen-ed25519-key/main.go')

diff --git a/cmd/gitolfs3-gen-ed25519-key/main.go b/cmd/gitolfs3-gen-ed25519-key/main.go
new file mode 100644
index 0000000..8288fd1
--- /dev/null
+++ b/cmd/gitolfs3-gen-ed25519-key/main.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"crypto/ed25519"
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
+	"os"
+)
+
+func wipe(b []byte) {
+	for i := range b {
+		b[i] = 0
+	}
+}
+
+func main() {
+	publicKey, privateKey, err := ed25519.GenerateKey(rand.Reader)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to generate ED25519 key: %s", err)
+		os.Exit(1)
+	}
+	defer wipe(privateKey)
+
+	enc := hex.NewEncoder(os.Stdout)
+	print("Public  ")
+	enc.Write(publicKey)
+	print("\nPrivate ")
+	enc.Write(privateKey.Seed())
+	println()
+}
-- 
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