1 files changed, 57 insertions, 0 deletions
diff --git a/pkg/signature/options.go b/pkg/signature/options.go
new file mode 100644
index 0000000..0be699f
--- /dev/null
+++ b/pkg/signature/options.go
@@ -0,0 +1,57 @@
+//
+// Copyright 2021 The Sigstore Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package signature
+
+import (
+	"context"
+	"crypto"
+	"io"
+
+	"github.com/sigstore/sigstore/pkg/signature/options"
+)
+
+// RPCOption specifies options to be used when performing RPC
+type RPCOption interface {
+	ApplyContext(*context.Context)
+	ApplyRemoteVerification(*bool)
+	ApplyRPCAuthOpts(opts *options.RPCAuth)
+	ApplyKeyVersion(keyVersion *string)
+}
+
+// PublicKeyOption specifies options to be used when obtaining a public key
+type PublicKeyOption interface {
+	RPCOption
+}
+
+// MessageOption specifies options to be used when processing messages during signing or verification
+type MessageOption interface {
+	ApplyDigest(*[]byte)
+	ApplyCryptoSignerOpts(*crypto.SignerOpts)
+}
+
+// SignOption specifies options to be used when signing a message
+type SignOption interface {
+	RPCOption
+	MessageOption
+	ApplyRand(*io.Reader)
+	ApplyKeyVersionUsed(**string)
+}
+
+// VerifyOption specifies options to be used when verifying a signature
+type VerifyOption interface {
+	RPCOption
+	MessageOption
+}