types: Start using sigsum-lib-go

This commit does not change the way in which the log behaves externally.
In other words, all changes are internal and involves renaming and code
restructuring.  Most notably picking up the refactored sigsum-lib-go.

1 files changed, 23 insertions, 0 deletions

diff --git a/pkg/state/mocks/signer.go b/pkg/state/mocks/signer.go
new file mode 100644
index 0000000..7c699dd
--- /dev/null
+++ b/pkg/state/mocks/signer.go
@@ -0,0 +1,23 @@
+package mocks
+
+import (
+	"crypto"
+	"crypto/ed25519"
+	"io"
+)
+
+// TestSign implements the signer interface.  It can be used to mock an Ed25519
+// signer that always return the same public key, signature, and error.
+type TestSigner struct {
+	PublicKey [ed25519.PublicKeySize]byte
+	Signature [ed25519.SignatureSize]byte
+	Error     error
+}
+
+func (ts *TestSigner) Public() crypto.PublicKey {
+	return ed25519.PublicKey(ts.PublicKey[:])
+}
+
+func (ts *TestSigner) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error) {
+	return ts.Signature[:], ts.Error
+}