feat(sol): UDP + HTTP listener

auth/auth.go

@@ -0,0 +1,35 @@
+package auth
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+)
+
+// Authenticator handles authentication
+type Authenticator struct {
+	user     string
+	password string
+	hash     string
+}
+
+// New creates a new authenticator with the given credentials
+func New(username, password string) *Authenticator {
+	authString := fmt.Sprintf("%s:%s", username, password)
+	hash := sha256.Sum256([]byte(authString))
+	hashStr := hex.EncodeToString(hash[:])
+
+	return &Authenticator{
+		user:     username,
+		password: password,
+		hash:     hashStr,
+	}
+}
+
+// Verify checks if the provided username and password are valid
+func (a *Authenticator) Verify(username, password string) bool {
+	authString := fmt.Sprintf("%s:%s", username, password)
+	hash := sha256.Sum256([]byte(authString))
+	hashStr := hex.EncodeToString(hash[:])
+	return hashStr == a.hash
+}