1 files changed, 29 insertions, 0 deletions
diff --git a/cmd/sigsum-debug/key/hash/hash.go b/cmd/sigsum-debug/key/hash/hash.go
new file mode 100644
index 0000000..0431dfc
--- /dev/null
+++ b/cmd/sigsum-debug/key/hash/hash.go
@@ -0,0 +1,29 @@
+package hash
+
+import (
+	"fmt"
+	"strings"
+
+	"git.sigsum.org/sigsum-go/internal/fmtio"
+	"git.sigsum.org/sigsum-go/pkg/hex"
+	"git.sigsum.org/sigsum-go/pkg/types"
+)
+
+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)
+	}
+	pub, err := fmtio.PublicKeyFromHex(s)
+	if err != nil {
+		return fmt.Errorf("parse key: %w", err)
+	}
+
+	keyHash := types.HashFn(pub[:])
+
+	fmt.Printf("%s\n", hex.Serialize(keyHash[:]))
+	return nil
+}