From 2c28b4209be2ced9a18c20347e1819a24a45cb66 Mon Sep 17 00:00:00 2001 From: Rasmus Dahlberg Date: Fri, 22 Apr 2022 01:36:28 +0200 Subject: add cosign command --- cmd/sigsum-debug/cosign/cosign.go | 41 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 cmd/sigsum-debug/cosign/cosign.go (limited to 'cmd/sigsum-debug/cosign/cosign.go') diff --git a/cmd/sigsum-debug/cosign/cosign.go b/cmd/sigsum-debug/cosign/cosign.go new file mode 100644 index 0000000..8597cc6 --- /dev/null +++ b/cmd/sigsum-debug/cosign/cosign.go @@ -0,0 +1,41 @@ +package cosign + +import ( + "bytes" + "fmt" + + "git.sigsum.org/sigsum-go/pkg/hex" + "git.sigsum.org/sigsum-go/pkg/types" + "git.sigsum.org/sigsum-tools-go/internal/util" +) + +func Main(_ []string, optPriv, optPub string) error { + priv, err := util.SignerFromHex(optPriv) + if err != nil { + return fmt.Errorf("cosign: %v", err) + } + b, err := hex.Deserialize(optPub) + if err != nil { + return fmt.Errorf("cosign: %v", err) + } + if len(b) != types.PublicKeySize { + return fmt.Errorf("cosign: invalid public key length %d", len(b)) + } + var pub types.PublicKey + copy(pub[:], b) + data, err := util.BytesFromStdin() + if err != nil { + return fmt.Errorf("cosign: %v", err) + } + var sth types.SignedTreeHead + if err := sth.FromASCII(bytes.NewBuffer(data)); err != nil { + return fmt.Errorf("cosign: %v", err) + } + witSTH, err := sth.TreeHead.Sign(priv, types.HashFn(pub[:])) + if err != nil { + return fmt.Errorf("cosign: %v", err) + } + + fmt.Printf("%s\n", hex.Serialize(witSTH.Signature[:])) + return nil +} -- cgit v1.2.3