diff --git a/zns-daemon/src/handlers/update/authenticate.rs b/zns-daemon/src/handlers/update/authenticate.rs
index c01c910..e362231 100644
--- a/zns-daemon/src/handlers/update/authenticate.rs
+++ b/zns-daemon/src/handlers/update/authenticate.rs
@@ -7,21 +7,20 @@ use zns::{
     errors::ZNSError,
     parser::FromBytes,
     reader::Reader,
-    structs::{Class, RRClass, RRType, Type},
+    structs::{Class, LabelString, RRClass, RRType, Type},
 };
 
 use super::{dnskey::DNSKeyRData, sig::Sig};
 
 pub async fn authenticate(
     sig: &Sig,
-    zone: &[String],
+    zone: &LabelString,
     connection: &mut PgConnection,
 ) -> Result<bool, ZNSError> {
-    if zone.len() >= Config::get().authoritative_zone.len() {
-        //TODO: panic? subtract
+    if zone.len() > Config::get().authoritative_zone.len() {
         let username = &zone[zone.len() - Config::get().authoritative_zone.len() - 1];
 
-        let ssh_verified = validate_ssh(username, sig)
+        let ssh_verified = validate_ssh(&username.to_lowercase(), sig)
             .await
             .map_err(|e| ZNSError::Servfail {
                 message: e.to_string(),
diff --git a/zns-daemon/src/handlers/update/mod.rs b/zns-daemon/src/handlers/update/mod.rs
index 867a9d2..addefcd 100644
--- a/zns-daemon/src/handlers/update/mod.rs
+++ b/zns-daemon/src/handlers/update/mod.rs
@@ -6,7 +6,7 @@ use crate::{
 };
 
 use zns::structs::{Class, Message, RRClass, RRType, Type};
-use zns::{errors::ZNSError, utils::vec_equal};
+use zns::{errors::ZNSError, utils::labels_equal};
 
 use self::sig::Sig;
 
@@ -64,7 +64,7 @@ impl ResponseHandler for UpdateHandler {
             let rlen = rr.name.len();
 
             // Check if rr has same zone
-            if rlen < zlen || !(vec_equal(&zone.qname, &rr.name[rlen - zlen..])) {
+            if rlen < zlen || !(labels_equal(&zone.qname, &rr.name[rlen - zlen..].into())) {
                 return Err(ZNSError::Refused {
                     message: "RR has different zone from Question".to_string(),
                 });
diff --git a/zns/src/message.rs b/zns/src/message.rs
index 2e4265f..f12de1d 100644
--- a/zns/src/message.rs
+++ b/zns/src/message.rs
@@ -1,7 +1,7 @@
 use crate::{
     errors::ZNSError,
     structs::{LabelString, Message, Opcode, RCODE},
-    utils::vec_equal,
+    utils::labels_equal,
 };
 
 impl Message {
@@ -23,7 +23,7 @@ impl Message {
         for question in &self.question {
             let zlen = question.qname.len();
             if !(zlen >= auth_zone.len()
-                && vec_equal(&question.qname[zlen - auth_zone.len()..], auth_zone))
+                && labels_equal(&question.qname[zlen - auth_zone.len()..].into(), auth_zone))
             {
                 return Err(ZNSError::Refused {
                     message: format!("Not authoritative for: {}", question.qname.join(".")),
@@ -68,17 +68,21 @@ mod tests {
     }
 
     #[test]
-    fn test_not_authoritative() {
-        let message = get_message(Some(vec![
+    fn test_authoritative() {
+        let name = vec![
             String::from("not"),
             String::from("good"),
             String::from("zone"),
-        ]));
+        ];
 
-        let zone = vec![String::from("good")];
+        let message = get_message(Some(name));
 
         assert!(message
-            .check_authoritative(&zone)
+            .check_authoritative(&vec![String::from("good")])
             .is_err_and(|x| x.rcode() == RCODE::REFUSED));
+
+        assert!(message
+            .check_authoritative(&vec![String::from("Zone")])
+            .is_ok())
     }
 }
diff --git a/zns/src/utils.rs b/zns/src/utils.rs
index 2fa2923..f3c98ef 100644
--- a/zns/src/utils.rs
+++ b/zns/src/utils.rs
@@ -1,13 +1,34 @@
-pub fn vec_equal<T: PartialEq>(vec1: &[T], vec2: &[T]) -> bool {
+use crate::structs::LabelString;
+
+pub fn labels_equal(vec1: &LabelString, vec2: &LabelString) -> bool {
     if vec1.len() != vec2.len() {
         return false;
     }
 
     for (elem1, elem2) in vec1.iter().zip(vec2.iter()) {
-        if elem1 != elem2 {
+        if elem1.to_lowercase() != elem2.to_lowercase() {
             return false;
         }
     }
 
     true
 }
+
+#[cfg(test)]
+mod tests {
+
+    use super::*;
+
+    #[test]
+    fn test_labels_equal() {
+        assert!(labels_equal(
+            &vec![String::from("one"), String::from("two")],
+            &vec![String::from("oNE"), String::from("two")]
+        ));
+
+        assert!(!labels_equal(
+            &vec![String::from("one"), String::from("two")],
+            &vec![String::from("oNEe"), String::from("two")]
+        ));
+    }
+}