diff --git a/src/bin/mitractl.rs b/src/bin/mitractl.rs
index e39267b..76485bf 100644
--- a/src/bin/mitractl.rs
+++ b/src/bin/mitractl.rs
@@ -10,7 +10,7 @@ use mitra::logger::configure_logger;
 use mitra::models::posts::queries::delete_post;
 use mitra::models::profiles::queries::delete_profile;
 use mitra::models::users::queries::{
-    generate_invite_code,
+    create_invite_code,
     get_invite_codes,
 };
 
@@ -77,7 +77,7 @@ async fn main() {
             println!("post deleted");
         },
         SubCommand::GenerateInviteCode(_) => {
-            let invite_code = generate_invite_code(db_client).await.unwrap();
+            let invite_code = create_invite_code(db_client).await.unwrap();
             println!("generated invite code: {}", invite_code);
         },
         SubCommand::ListInviteCodes(_) => {
diff --git a/src/models/users/mod.rs b/src/models/users/mod.rs
index 0333ab5..4c01618 100644
--- a/src/models/users/mod.rs
+++ b/src/models/users/mod.rs
@@ -1,2 +1,3 @@
 pub mod queries;
 pub mod types;
+mod utils;
diff --git a/src/models/users/queries.rs b/src/models/users/queries.rs
index 305f874..b6ca770 100644
--- a/src/models/users/queries.rs
+++ b/src/models/users/queries.rs
@@ -4,13 +4,13 @@ use uuid::Uuid;
 use crate::errors::DatabaseError;
 use crate::models::profiles::queries::create_profile;
 use crate::models::profiles::types::{DbActorProfile, ProfileCreateData};
-use crate::utils::crypto::generate_random_string;
 use super::types::{DbUser, User, UserRegistrationData};
+use super::utils::generate_invite_code;
 
-pub async fn generate_invite_code(
+pub async fn create_invite_code(
     db_client: &impl GenericClient,
 ) -> Result<String, DatabaseError> {
-    let invite_code = generate_random_string();
+    let invite_code = generate_invite_code();
     db_client.execute(
         "
         INSERT INTO user_invite_code (code)
diff --git a/src/models/users/utils.rs b/src/models/users/utils.rs
new file mode 100644
index 0000000..9d88209
--- /dev/null
+++ b/src/models/users/utils.rs
@@ -0,0 +1,22 @@
+use hex;
+use rand;
+use rand::prelude::*;
+
+const INVITE_CODE_LENGTH: usize = 32;
+
+pub fn generate_invite_code() -> String {
+    let mut rng = rand::thread_rng();
+    let value: [u8; INVITE_CODE_LENGTH / 2] = rng.gen();
+    hex::encode(value)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_generate_invite_code() {
+        let invite_code = generate_invite_code();
+        assert_eq!(invite_code.len(), INVITE_CODE_LENGTH);
+    }
+}
diff --git a/src/utils/crypto.rs b/src/utils/crypto.rs
index 1c9c7ba..9bf7d9e 100644
--- a/src/utils/crypto.rs
+++ b/src/utils/crypto.rs
@@ -4,12 +4,6 @@ use rsa::{Hash, PaddingScheme, PublicKey, RsaPrivateKey, RsaPublicKey};
 use rsa::pkcs8::{FromPrivateKey, FromPublicKey, ToPrivateKey, ToPublicKey};
 use sha2::{Digest, Sha256};
 
-pub fn generate_random_string() -> String {
-    let mut rng = rand::thread_rng();
-    let value: [u8; 16] = rng.gen();
-    hex::encode(value)
-}
-
 pub fn hash_password(password: &str) -> Result<String, argon2::Error> {
     let mut rng = rand::thread_rng();
     let salt: [u8; 32] = rng.gen();