Add command for generating ED25519 keypairs

1 files changed, 31 insertions, 0 deletions

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()
+}