Wire up more proper ticket generation and verification logic

lib/vdf/vdf.go

@@ -0,0 +1,28 @@
+package vdf
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"fmt"
+)
+
+func Run(input []byte) ([]byte, []byte, error) {
+	h := sha256.Sum256(input)
+	// TODO: THIS IS A FAKE VDF. THE SPEC IS UNCLEAR ON WHAT TO REALLY DO HERE
+	return h[:], []byte("proof"), nil
+}
+
+func Verify(input []byte, out []byte, proof []byte) error {
+	// this is a fake VDF
+	h := sha256.Sum256(input)
+
+	if !bytes.Equal(h[:], out) {
+		return fmt.Errorf("vdf output incorrect")
+	}
+
+	if !bytes.Equal(proof, []byte("proof")) {
+		return fmt.Errorf("vdf proof failed to validate")
+	}
+
+	return nil
+}