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Diffstat (limited to 'cmd/sigsum-debug/key/public/public.go')
-rw-r--r--cmd/sigsum-debug/key/public/public.go32
1 files changed, 32 insertions, 0 deletions
diff --git a/cmd/sigsum-debug/key/public/public.go b/cmd/sigsum-debug/key/public/public.go
new file mode 100644
index 0000000..b03d0b9
--- /dev/null
+++ b/cmd/sigsum-debug/key/public/public.go
@@ -0,0 +1,32 @@
+package public
+
+import (
+ "crypto/ed25519"
+ "fmt"
+ "strings"
+
+ "git.sigsum.org/sigsum-go/internal/fmtio"
+ "git.sigsum.org/sigsum-go/pkg/hex"
+)
+
+func Main(args []string) error {
+ if len(args) != 0 {
+ return fmt.Errorf("trailing arguments: %s", strings.Join(args, ", "))
+ }
+ s, err := fmtio.StringFromStdin()
+ if err != nil {
+ return fmt.Errorf("read stdin: %w", err)
+ }
+
+ priv, err := fmtio.SignerFromHex(s)
+ if err != nil {
+ return fmt.Errorf("parse key: %w", err)
+ }
+ pub, ok := priv.Public().(ed25519.PublicKey)
+ if !ok {
+ return fmt.Errorf("not an ed25519 key")
+ }
+
+ fmt.Printf("%s\n", hex.Serialize(pub[:]))
+ return nil
+}