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Diffstat (limited to 'vendor/gopkg.in/square/go-jose.v2/opaque.go')
-rw-r--r--vendor/gopkg.in/square/go-jose.v2/opaque.go83
1 files changed, 83 insertions, 0 deletions
diff --git a/vendor/gopkg.in/square/go-jose.v2/opaque.go b/vendor/gopkg.in/square/go-jose.v2/opaque.go
new file mode 100644
index 000000000..4a8bd8f32
--- /dev/null
+++ b/vendor/gopkg.in/square/go-jose.v2/opaque.go
@@ -0,0 +1,83 @@
+/*-
+ * Copyright 2018 Square Inc.
+ *
+ * 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 jose
+
+// OpaqueSigner is an interface that supports signing payloads with opaque
+// private key(s). Private key operations preformed by implementors may, for
+// example, occur in a hardware module. An OpaqueSigner may rotate signing keys
+// transparently to the user of this interface.
+type OpaqueSigner interface {
+ // Public returns the public key of the current signing key.
+ Public() *JSONWebKey
+ // Algs returns a list of supported signing algorithms.
+ Algs() []SignatureAlgorithm
+ // SignPayload signs a payload with the current signing key using the given
+ // algorithm.
+ SignPayload(payload []byte, alg SignatureAlgorithm) ([]byte, error)
+}
+
+type opaqueSigner struct {
+ signer OpaqueSigner
+}
+
+func newOpaqueSigner(alg SignatureAlgorithm, signer OpaqueSigner) (recipientSigInfo, error) {
+ var algSupported bool
+ for _, salg := range signer.Algs() {
+ if alg == salg {
+ algSupported = true
+ break
+ }
+ }
+ if !algSupported {
+ return recipientSigInfo{}, ErrUnsupportedAlgorithm
+ }
+
+ return recipientSigInfo{
+ sigAlg: alg,
+ publicKey: signer.Public,
+ signer: &opaqueSigner{
+ signer: signer,
+ },
+ }, nil
+}
+
+func (o *opaqueSigner) signPayload(payload []byte, alg SignatureAlgorithm) (Signature, error) {
+ out, err := o.signer.SignPayload(payload, alg)
+ if err != nil {
+ return Signature{}, err
+ }
+
+ return Signature{
+ Signature: out,
+ protected: &rawHeader{},
+ }, nil
+}
+
+// OpaqueVerifier is an interface that supports verifying payloads with opaque
+// public key(s). An OpaqueSigner may rotate signing keys transparently to the
+// user of this interface.
+type OpaqueVerifier interface {
+ VerifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error
+}
+
+type opaqueVerifier struct {
+ verifier OpaqueVerifier
+}
+
+func (o *opaqueVerifier) verifyPayload(payload []byte, signature []byte, alg SignatureAlgorithm) error {
+ return o.verifier.VerifyPayload(payload, signature, alg)
+}