diff --git a/core/src/crypto.rs b/core/src/crypto.rs
index 2b823dbe..8614a874 100644
--- a/core/src/crypto.rs
+++ b/core/src/crypto.rs
@@ -344,7 +344,7 @@ mod tests {
 
     #[tokio::test]
     async fn test_verify_password() {
-        const HASH: &str = "$argon2id$v=19$m=4096,t=3,p=1$c2VjcmV0bHl0ZXN0aW5nZXZlcnl0aGluZw$xEzH8wD/ZjzgZTDTl3YtzMFCfcVa5M5m9y6NfSyB1n4";
+        const HASH: &str = "$argon2i$v=19$m=6000,t=3,p=10$WE9xCQmmWdBK82R4SEjoqA$TZSc6PuLd4aWK2x2WAb+Lm9sLySqjK3KLbNyqyQmzPQ";
         const PASSWORD: &str = "test";
 
         let result = super::verify_password(PASSWORD.to_string(), HASH.to_string())
diff --git a/core/src/database/mutation/candidate.rs b/core/src/database/mutation/candidate.rs
index 14b94ce5..4c86b088 100644
--- a/core/src/database/mutation/candidate.rs
+++ b/core/src/database/mutation/candidate.rs
@@ -1,4 +1,4 @@
-use crate::{Mutation, services::candidate_service::{AddUserDetailsForm, EncryptedAddUserData}};
+use crate::{Mutation};
 
 use ::entity::candidate::{self, Model};
 use sea_orm::{*};
@@ -8,13 +8,13 @@ impl Mutation {
         db: &DbConn,
         application_id: i32,
         hashed_password: String,
-        encrypted_personal_id_number: String,
+        hashed_personal_id_number: String,
         pubkey: String,
         encrypted_priv_key: String
     ) -> Result<candidate::Model, DbErr> {
         candidate::ActiveModel {
             application: Set(application_id),
-            personal_identification_number: Set(encrypted_personal_id_number),
+            personal_identification_number_hash: Set(hashed_personal_id_number),
             code: Set(hashed_password),
             public_key: Set(pubkey),
             private_key: Set(encrypted_priv_key),
@@ -26,22 +26,31 @@ impl Mutation {
             .await
     }
 
-    pub async fn add_user_details(
+    pub async fn add_candidate_details(
         db: &DbConn,
         user: Model,
-        details: EncryptedAddUserData,
+        name: String,
+        surname: String,
+        birthplace: String,
+        birthdate: String,
+        address: String,
+        telephone: String,
+        citizenship: String,
+        email: String,
+        sex: String,
+        study: String,
     ) -> Result<candidate::Model, sea_orm::DbErr> {
         let mut user: candidate::ActiveModel = user.into();
-        user.name = Set(Some(details.name));
-        user.surname = Set(Some(details.surname));
-        user.birthplace = Set(Some(details.birthplace));
-        user.birthdate = Set(Some(details.birthdate));
-        user.address = Set(Some(details.address));
-        user.telephone = Set(Some(details.telephone));
-        user.citizenship = Set(Some(details.citizenship));
-        user.email = Set(Some(details.email));
-        user.sex = Set(Some(details.sex));
-        user.study = Set(Some(details.study));
+        user.name = Set(Some(name));
+        user.surname = Set(Some(surname));
+        user.birthplace = Set(Some(birthplace));
+        user.birthdate = Set(None);
+        user.address = Set(Some(address));
+        user.telephone = Set(Some(telephone));
+        user.citizenship = Set(Some(citizenship));
+        user.email = Set(Some(email));
+        user.sex = Set(Some(sex));
+        user.study = Set(Some(study));
 
         user.updated_at = Set(chrono::offset::Local::now().naive_local());
 
diff --git a/core/src/database/query/candidate.rs b/core/src/database/query/candidate.rs
index a8b55521..72ef4248 100644
--- a/core/src/database/query/candidate.rs
+++ b/core/src/database/query/candidate.rs
@@ -41,7 +41,7 @@ mod tests {
             code: Set("test".to_string()),
             public_key: Set("test".to_string()),
             private_key: Set("test".to_string()),
-            personal_identification_number: Set("test".to_string()),
+            personal_identification_number_hash: Set("test".to_string()),
             created_at: Set(chrono::offset::Local::now().naive_local()),
             updated_at: Set(chrono::offset::Local::now().naive_local()),
             ..Default::default()
diff --git a/entity/src/candidate.rs b/entity/src/candidate.rs
index 2806e76d..81b7f72b 100644
--- a/entity/src/candidate.rs
+++ b/entity/src/candidate.rs
@@ -17,9 +17,9 @@ pub struct Model {
     pub email: Option<String>,
     pub sex: Option<String>,
     pub study: Option<String>,
-    pub personal_identification_number: String,
     #[sea_orm(column_type = "Text", nullable)]
-    pub personal_identification_number_hash: Option<String>,
+    pub personal_identification_number: Option<String>,
+    pub personal_identification_number_hash: String,
     pub public_key: String,
     pub private_key: String,
     #[sea_orm(default_value = false)]
diff --git a/migration/src/m20221024_121621_create_candidate.rs b/migration/src/m20221024_121621_create_candidate.rs
index 87434289..1d0e9982 100644
--- a/migration/src/m20221024_121621_create_candidate.rs
+++ b/migration/src/m20221024_121621_create_candidate.rs
@@ -30,8 +30,8 @@ impl MigrationTrait for Migration {
                     .col(ColumnDef::new(Candidate::Email).string())
                     .col(ColumnDef::new(Candidate::Sex).string())
                     .col(ColumnDef::new(Candidate::Study).string())
-                    .col(ColumnDef::new(Candidate::PersonalIdentificationNumber).string().not_null())
-                    .col(ColumnDef::new(Candidate::PersonalIdentificationNumberHash).text())
+                    .col(ColumnDef::new(Candidate::PersonalIdentificationNumber).string())
+                    .col(ColumnDef::new(Candidate::PersonalIdentificationNumberHash).text().not_null())
                     .col(ColumnDef::new(Candidate::PublicKey).string().not_null())
                     .col(ColumnDef::new(Candidate::PrivateKey).string().not_null())
                     .col(ColumnDef::new(Candidate::IsAdmin).boolean().not_null().default(false))