diff --git a/.env b/.env
index 8c4c540..e69de29 100644
--- a/.env
+++ b/.env
@@ -1 +0,0 @@
-APP_JWT_SECRET=bc1996ea-5464-424a-9a38-5604f2bc865a
diff --git a/.swp b/.swp
new file mode 100644
index 0000000..6f58751
Binary files /dev/null and b/.swp differ
diff --git a/Cargo.lock b/Cargo.lock
index fca0ec9..9b04e92 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -349,6 +349,12 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "base64"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
+
 [[package]]
 name = "base64"
 version = "0.21.7"
@@ -966,11 +972,13 @@ dependencies = [
  "chrono",
  "env_logger",
  "fully_pub",
+ "jsonwebkey-convert",
  "jsonwebtoken",
  "kernel",
  "log",
  "minijinja",
  "minijinja-embed",
+ "pem 3.0.4",
  "serde",
  "serde_json",
  "serde_urlencoded",
@@ -1238,6 +1246,20 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "jsonwebkey-convert"
+version = "0.3.0"
+dependencies = [
+ "base64 0.13.1",
+ "lazy_static",
+ "num-bigint",
+ "pem 0.8.3",
+ "serde",
+ "serde_json",
+ "simple_asn1 0.5.4",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "jsonwebtoken"
 version = "9.3.0"
@@ -1246,11 +1268,11 @@ checksum = "b9ae10193d25051e74945f1ea2d0b42e03cc3b890f7e4cc5faa44997d808193f"
 dependencies = [
  "base64 0.21.7",
  "js-sys",
- "pem",
+ "pem 3.0.4",
  "ring",
  "serde",
  "serde_json",
- "simple_asn1",
+ "simple_asn1 0.6.2",
 ]
 
 [[package]]
@@ -1561,6 +1583,17 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
+[[package]]
+name = "pem"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd56cbd21fea48d0c440b41cd69c589faacade08c992d9a54e471b79d0fd13eb"
+dependencies = [
+ "base64 0.13.1",
+ "once_cell",
+ "regex",
+]
+
 [[package]]
 name = "pem"
 version = "3.0.4"
@@ -1921,6 +1954,18 @@ dependencies = [
  "rand_core",
 ]
 
+[[package]]
+name = "simple_asn1"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8eb4ea60fb301dc81dfc113df680571045d375ab7345d171c5dc7d7e13107a80"
+dependencies = [
+ "chrono",
+ "num-bigint",
+ "num-traits",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "simple_asn1"
 version = "0.6.2"
diff --git a/TODO.md b/TODO.md
index 6d8df20..5771e72 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,5 +1,8 @@
 # TODO
 
+- [ ] better OIDC support
+- [ ] better support of `profile` `openid` `email` `roles` scopes
+
 - [ ] i18n strings in the http website.
 
 - [ ] Instance customization support
@@ -50,3 +53,5 @@
 - [X] basic docker setup
 - [ ] make `docker stop` working (handle SIGTERM/SIGINT)
 - [ ] implement docker secrets. https://docs.docker.com/engine/swarm/secrets/
+
+- [ ] Find a minimal OpenID client implementation like Listmonk but a little bit more mature
diff --git a/config.toml b/config.toml
index ca1c4be..12f31b4 100644
--- a/config.toml
+++ b/config.toml
@@ -1,3 +1,5 @@
+signing_key = "tmp/secrets/signing.key"
+
 [instance]
 base_uri = "https://auth.fictive.org"
 name = "Fictive's auth"
diff --git a/lib/http_server/Cargo.toml b/lib/http_server/Cargo.toml
index 260d58c..7fc709b 100644
--- a/lib/http_server/Cargo.toml
+++ b/lib/http_server/Cargo.toml
@@ -43,6 +43,15 @@ argh = { workspace = true }
 sqlx = { workspace = true }
 uuid = { workspace = true }
 url = { workspace = true }
+pem = "3.0.4"
+
+# For now, we test if it's viable, and later we will fork it to fix the build (cf. issue
+# https://github.com/informationsea/jsonwebkey-rs#1 )
+[dependencies.jsonwebkey-convert]
+path = "/home/mbess/workspace/foss/rust_libs/jsonwebkey-rs/jsonwebkey-convert"
+features = ["simple_asn1", "pem"]
+
+pem = "3.0.4"
 
 [build-dependencies]
 minijinja-embed = "2.3.1"
diff --git a/lib/http_server/src/controllers/api/oauth2/access_token.rs b/lib/http_server/src/controllers/api/oauth2/access_token.rs
index fcd7299..396ea96 100644
--- a/lib/http_server/src/controllers/api/oauth2/access_token.rs
+++ b/lib/http_server/src/controllers/api/oauth2/access_token.rs
@@ -6,7 +6,7 @@ use serde::{Deserialize, Serialize};
 
 use kernel::{models::authorization::Authorization, repositories::users::get_user_by_id};
 use crate::{
-    services::{app_session::AppClientSession, session::create_token}, token_claims::{AppUserTokenClaims, OAuth2AccessTokenClaims, OIDCIdTokenClaims}, AppState
+    services::{app_session::AppClientSession, session::create_token}, token_claims::{OAuth2AccessTokenClaims, OIDCIdTokenClaims}, AppState
 };
 
 const AUTHORIZATION_CODE_TTL_SECONDS: i64 = 120;
@@ -81,22 +81,25 @@ pub async fn get_access_token(
 
     // 3.1. Generate JWT for OAuth2 client user session
     let access_token_jwt = create_token(
+        &app_state.config,
         &app_state.secrets,
         OAuth2AccessTokenClaims::new(
             &app_state.config,
-            &app_client_session.client_id,
             &user,
             authorization.scopes.to_vec()
         )
     );
     // 3.2. Generate id_token for OIDC client
+    let id_token_claims = OIDCIdTokenClaims::new(
+        &app_state.config,
+        &app_client_session.client_id,
+        user.clone(),
+        authorization.nonce.clone()
+    );
     let id_token_jwt = create_token(
+        &app_state.config,
         &app_state.secrets,
-        OIDCIdTokenClaims::new(
-            &app_state.config,
-            &app_client_session.client_id,
-            &user
-        )
+        id_token_claims
     );
     // 4. return JWT
     let access_token_res = AccessTokenResponse {
diff --git a/lib/http_server/src/controllers/api/openid/keys.rs b/lib/http_server/src/controllers/api/openid/keys.rs
new file mode 100644
index 0000000..8943483
--- /dev/null
+++ b/lib/http_server/src/controllers/api/openid/keys.rs
@@ -0,0 +1,45 @@
+use jsonwebkey_convert::RSAPublicKey;
+use jsonwebkey_convert::der::FromPem;
+
+use axum::{extract::State, response::IntoResponse, Json};
+use fully_pub::fully_pub;
+use serde::Serialize;
+
+use crate::AppState;
+
+// /// JSON Web Key
+// /// @See https://www.rfc-editor.org/rfc/rfc7517.html
+// #[derive(Serialize)]
+// #[fully_pub]
+// struct RsaJWK {
+//     #[serde(rename = "use")]
+//     utilisation: String,
+//     alg: String,
+//     kid: String,
+//     #[serde(rename = "modulus")]
+//     modulus: String,
+//     exp: String
+// }
+
+/// JSON Web Key set
+/// @See https://www.rfc-editor.org/rfc/rfc7517.html
+#[derive(Serialize)]
+#[fully_pub]
+struct JWKs {
+    keys: Vec<RSAPublicKey>
+}
+
+pub async fn get_signing_public_keys(
+    State(app_state): State<AppState>,
+) -> impl IntoResponse {
+    let pem_data = app_state.secrets.signing_keypair.0;
+    
+    // extract modulus and exp number from ASN.1 encoded PCKS 1 package
+    let rsa_jwk = RSAPublicKey::from_pem(pem_data)
+        .expect("Expected to decode PEM public key");
+    dbg!(&rsa_jwk);
+    
+    Json(JWKs {
+        keys: vec![rsa_jwk]
+    }).into_response()
+}
diff --git a/lib/http_server/src/controllers/api/openid/mod.rs b/lib/http_server/src/controllers/api/openid/mod.rs
index 1ab9853..063a9c9 100644
--- a/lib/http_server/src/controllers/api/openid/mod.rs
+++ b/lib/http_server/src/controllers/api/openid/mod.rs
@@ -1 +1,2 @@
 pub mod well_known;
+pub mod keys;
diff --git a/lib/http_server/src/controllers/api/openid/well_known.rs b/lib/http_server/src/controllers/api/openid/well_known.rs
index 2e3f8fa..6b2d0e8 100644
--- a/lib/http_server/src/controllers/api/openid/well_known.rs
+++ b/lib/http_server/src/controllers/api/openid/well_known.rs
@@ -18,7 +18,8 @@ struct WellKnownOpenIdConfiguration {
     scopes_supported: Vec<String>,
     response_types_supported: Vec<String>,
     token_endpoint_auth_methods_supported: Vec<String>,
-    id_token_signing_alg_values_supported: Vec<String>
+    id_token_signing_alg_values_supported: Vec<String>,
+    jwks_uri: String
 }
 
 pub async fn get_well_known_openid_configuration(
@@ -33,7 +34,8 @@ pub async fn get_well_known_openid_configuration(
         scopes_supported: AuthorizationScope::iter().map(|v| v.to_string()).collect(),
         response_types_supported: vec!["code".into()],
         token_endpoint_auth_methods_supported: vec!["client_secret_basic".into()],
-        id_token_signing_alg_values_supported: vec!["HS256".into()],
+        id_token_signing_alg_values_supported: vec!["RS256".into()],
+        jwks_uri: format!("{}/.well-known/jwks", base_url)
         // jwks_uri:
         // subject_types_supported
     })
diff --git a/lib/http_server/src/controllers/api/read_user.rs b/lib/http_server/src/controllers/api/read_user.rs
index 4b9e7c1..465a307 100644
--- a/lib/http_server/src/controllers/api/read_user.rs
+++ b/lib/http_server/src/controllers/api/read_user.rs
@@ -2,7 +2,7 @@ use axum::{extract::State, response::IntoResponse, Extension, Json};
 use fully_pub::fully_pub;
 use serde::Serialize;
 
-use crate::{token_claims::AppUserTokenClaims, AppState};
+use crate::{token_claims::OAuth2AccessTokenClaims, AppState};
 use kernel::models::user::User;
 
 #[derive(Serialize)]
@@ -18,11 +18,11 @@ struct ReadUserBasicExtract {
 
 pub async fn read_user_basic(
     State(app_state): State<AppState>,
-    Extension(token_claims): Extension<AppUserTokenClaims>,
+    Extension(token_claims): Extension<OAuth2AccessTokenClaims>,
 ) -> impl IntoResponse {
     // 1. This handler require app user authentification (JWT)
     let user_res = sqlx::query_as::<_, User>("SELECT * FROM users WHERE id = $1")
-        .bind(&token_claims.user_id)
+        .bind(&token_claims.sub)
         .fetch_one(&app_state.db.0)
         .await
         .expect("To get user from claim");
diff --git a/lib/http_server/src/controllers/ui/authorize.rs b/lib/http_server/src/controllers/ui/authorize.rs
index 64ca470..923d8a3 100644
--- a/lib/http_server/src/controllers/ui/authorize.rs
+++ b/lib/http_server/src/controllers/ui/authorize.rs
@@ -7,9 +7,7 @@ use serde::{Deserialize, Serialize};
 use url::Url;
 use uuid::Uuid;
 
-use kernel::{
-    models::{authorization::Authorization, config::AppAuthorizeFlow}
-};
+use kernel::models::{authorization::Authorization, config::AppAuthorizeFlow};
 use utils::get_random_alphanumerical;
 use crate::{
     renderer::TemplateRenderer, services::oauth2::{parse_scope, verify_redirect_uri}, token_claims::UserTokenClaims, AppState
@@ -25,6 +23,7 @@ struct AuthorizationParams {
     redirect_uri: String,
     /// An opaque value used by the client to maintain state between the request and callback
     state: String,
+    nonce: Option<String>
 }
 
 fn redirect_to_client(
@@ -34,7 +33,7 @@ fn redirect_to_client(
     let target_url = format!("{}?code={}&state={}",
         authorization_params.redirect_uri,
         authorization_code,
-        authorization_params.state,
+        authorization_params.state
     );
     debug!("Redirecting to {}", target_url);
 
@@ -117,9 +116,10 @@ pub async fn authorize_form(
             // Create new auth code
             let authorization_code = get_random_alphanumerical(32);
             // Update last used timestamp for this authorization
-            let _result = sqlx::query("UPDATE authorizations SET code = $2, last_used_at = $3 WHERE id = $1")
+            let _result = sqlx::query("UPDATE authorizations SET code = $2, nonce = $3, last_used_at = $4 WHERE id = $1")
                 .bind(existing_authorization.id)
                 .bind(authorization_code.clone())
+                .bind(authorization_params.nonce.clone())
                 .bind(Utc::now().to_rfc3339_opts(SecondsFormat::Millis, true))
                 .execute(&app_state.db.0)
                 .await.unwrap();
@@ -173,6 +173,7 @@ pub async fn perform_authorize(
     Extension(token_claims): Extension<UserTokenClaims>,
     Form(authorize_form): Form<AuthorizationParams>
 ) -> impl IntoResponse {
+    dbg!(&authorize_form);
     // 1. Get the app details
     let app = match app_state.config.applications
         .iter()
@@ -204,6 +205,7 @@ pub async fn perform_authorize(
         client_id: app.client_id.clone(),
         scopes: sqlx::types::Json(scopes),
         code: authorization_code.clone(),
+        nonce: authorize_form.nonce.clone(),
         last_used_at: Some(Utc::now()),
         created_at: Utc::now(),
     };
@@ -211,14 +213,15 @@ pub async fn perform_authorize(
     // 3. Save authorization in DB with state
     let res = sqlx::query("
         INSERT INTO authorizations
-            (id, user_id, client_id, scopes, code, last_used_at, created_at)
-            VALUES ($1, $2, $3, $4, $5, $6, $7)
+            (id, user_id, client_id, scopes, code, nonce, last_used_at, created_at)
+            VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
         ")
         .bind(authorization.id.clone())
         .bind(authorization.user_id)
         .bind(authorization.client_id)
         .bind(authorization.scopes)
         .bind(authorization.code)
+        .bind(authorization.nonce)
         .bind(authorization.last_used_at.map(|x| x.to_rfc3339_opts(SecondsFormat::Millis, true)))
         .bind(authorization.created_at.to_rfc3339_opts(SecondsFormat::Millis, true))
         .execute(&app_state.db.0)
diff --git a/lib/http_server/src/controllers/ui/login.rs b/lib/http_server/src/controllers/ui/login.rs
index 59cce05..68061d4 100644
--- a/lib/http_server/src/controllers/ui/login.rs
+++ b/lib/http_server/src/controllers/ui/login.rs
@@ -91,8 +91,8 @@ pub async fn perform_login(
         .await.unwrap();
 
     let jwt_max_age = Duration::days(15);
-    let claims = UserTokenClaims::new(&user.id, jwt_max_age);
-    let jwt = create_token(&app_state.secrets, claims);
+    let claims = UserTokenClaims::new(&app_state.config, &user.id, jwt_max_age);
+    let jwt = create_token(&app_state.config, &app_state.secrets, claims);
 
     // TODO: handle keep_session boolean from form and specify cookie max age only if this setting
     // is true
diff --git a/lib/http_server/src/middlewares/app_auth.rs b/lib/http_server/src/middlewares/app_auth.rs
index 3709f8b..c5c4e56 100644
--- a/lib/http_server/src/middlewares/app_auth.rs
+++ b/lib/http_server/src/middlewares/app_auth.rs
@@ -9,7 +9,7 @@ use utils::parse_basic_auth;
 
 use crate::{
     services::{app_session::AppClientSession, session::verify_token},
-    token_claims::AppUserTokenClaims,
+    token_claims::OAuth2AccessTokenClaims,
     AppState
 };
 
@@ -102,14 +102,16 @@ pub async fn enforce_jwt_auth_middleware(
             );
         }
     };
-    let token_claims: AppUserTokenClaims = match verify_token(&app_state.secrets, jwt) {
-        Ok(val) => val,
-        Err(_e) => {
-            return Err(
-                (StatusCode::UNAUTHORIZED, Html("Unauthorized: The provided JWT is invalid."))
-            );
-        }
-    };
+    let token_claims: OAuth2AccessTokenClaims =
+        match verify_token(&app_state.config, &app_state.secrets, jwt) {
+            Ok(val) => val,
+            Err(_e) => {
+                dbg!(_e);
+                return Err(
+                    (StatusCode::UNAUTHORIZED, Html("Unauthorized: The provided JWT is invalid."))
+                );
+            }
+        };
     req.extensions_mut().insert(token_claims);
     Ok(next.run(req).await)
 }
diff --git a/lib/http_server/src/middlewares/user_auth.rs b/lib/http_server/src/middlewares/user_auth.rs
index 7582eb7..921bdce 100644
--- a/lib/http_server/src/middlewares/user_auth.rs
+++ b/lib/http_server/src/middlewares/user_auth.rs
@@ -28,18 +28,20 @@ pub async fn auth_middleware(
             return Ok(next.run(req).await)
         }
     };
-    let token_claims: UserTokenClaims = match verify_token(&app_state.secrets, jwt) {
-        Ok(val) => val,
-        Err(_e) => {
-            // UserWebGUI: delete invalid JWT cookie
-            return Err(
-                (
-                    cookies.remove(WEB_GUI_JWT_COOKIE_NAME),
-                    Redirect::to(&original_uri.to_string())
-                )
-            );
-        }
-    };
+    let token_claims: UserTokenClaims =
+        match verify_token(&app_state.config, &app_state.secrets, jwt) {
+            Ok(val) => val,
+            Err(_e) => {
+                dbg!(&_e);
+                // UserWebGUI: delete invalid JWT cookie
+                return Err(
+                    (
+                        cookies.remove(WEB_GUI_JWT_COOKIE_NAME),
+                        Redirect::to(&original_uri.to_string())
+                    )
+                );
+            }
+        };
     req.extensions_mut().insert(token_claims);
     Ok(next.run(req).await)
 }
diff --git a/lib/http_server/src/router.rs b/lib/http_server/src/router.rs
index 7901928..fcbd89a 100644
--- a/lib/http_server/src/router.rs
+++ b/lib/http_server/src/router.rs
@@ -51,7 +51,8 @@ pub fn build_router(server_config: &ServerConfig, app_state: AppState) -> Router
         .route("/api/user-assets/:asset_id", get(api::public_assets::get_user_asset));
 
     let well_known_routes = Router::new()
-        .route("/.well-known/openid-configuration", get(api::openid::well_known::get_well_known_openid_configuration));
+        .route("/.well-known/openid-configuration", get(api::openid::well_known::get_well_known_openid_configuration))
+        .route("/.well-known/jwks", get(api::openid::keys::get_signing_public_keys));
 
     Router::new()
         .merge(public_routes)
diff --git a/lib/http_server/src/services/session.rs b/lib/http_server/src/services/session.rs
index 018e094..dd97828 100644
--- a/lib/http_server/src/services/session.rs
+++ b/lib/http_server/src/services/session.rs
@@ -1,24 +1,37 @@
 use anyhow::Result;
 use serde::{de::DeserializeOwned, Serialize};
 use jsonwebtoken::{encode, decode, Header, Algorithm, Validation, EncodingKey, DecodingKey};
-use kernel::context::AppSecrets;
+use kernel::{context::AppSecrets, models::config::Config};
 
 
-pub fn create_token<T: Serialize>(secrets: &AppSecrets, claims: T) -> String {
+pub fn create_token<T: Serialize>(
+    _config: &Config,
+    secrets: &AppSecrets,
+    claims: T
+) -> String {
     let token = encode(
-        &Header::default(),
+        &Header::new(Algorithm::RS256),
         &claims,
-        &EncodingKey::from_secret(secrets.jwt_secret.as_bytes())
+        &EncodingKey::from_rsa_pem(&secrets.signing_keypair.1)
+            .expect("To build encoding key from signing key.")
     ).expect("Create token");
 
     token
 }
 
-pub fn verify_token<T: DeserializeOwned>(secrets: &AppSecrets, jwt: &str)  -> Result<T> {
+pub fn verify_token<T: DeserializeOwned>(
+    config: &Config,
+    secrets: &AppSecrets,
+    jwt: &str
+)  -> Result<T> {
+    let mut validation = Validation::new(Algorithm::RS256);
+    validation.set_issuer(&[config.instance.base_uri.clone()]);
+    validation.set_audience(&[config.instance.base_uri.clone()]);
     let token_data = decode::<T>(
         jwt,
-        &DecodingKey::from_secret(secrets.jwt_secret.as_bytes()),
-        &Validation::new(Algorithm::HS256)
+        &DecodingKey::from_rsa_pem(&secrets.signing_keypair.0)
+            .expect("To build decoding key from signing key."),
+        &validation 
     )?;
 
     Ok(token_data.claims)
diff --git a/lib/http_server/src/token_claims.rs b/lib/http_server/src/token_claims.rs
index 4339eb4..726c4e5 100644
--- a/lib/http_server/src/token_claims.rs
+++ b/lib/http_server/src/token_claims.rs
@@ -12,16 +12,19 @@ struct UserTokenClaims {
     /// token expiration
     exp: u64,
     /// token issuer
-    iss: String
+    iss: String,
     // TODO: add roles
+    /// token audience
+    aud: String
 }
 
 impl UserTokenClaims {
-    pub fn new(user_id: &str, max_age: Duration) -> Self {
+    pub fn new(config: &Config, user_id: &str, max_age: Duration) -> Self {
         UserTokenClaims {
             sub: user_id.into(),
             exp: get_current_timestamp() + max_age.whole_seconds() as u64,
-            iss: "Minauthator".into()
+            iss: config.instance.base_uri.clone(),
+            aud: config.instance.base_uri.clone(),
         }
     }
 }
@@ -33,7 +36,7 @@ impl UserTokenClaims {
 struct OAuth2AccessTokenClaims {
     /// Token issuer (URI to the issuer)
     iss: String,
-    /// Audiance (client_id)
+    /// Audiance (In this case, the audiance is equal to the issuer)
     aud: String,
     /// End-user id assigned by the issuer (user_id)
     sub: String,
@@ -44,10 +47,10 @@ struct OAuth2AccessTokenClaims {
 }
 
 impl OAuth2AccessTokenClaims {
-    pub fn new(config: &Config, client_id: &str, user: &User, scopes: Vec<AuthorizationScope>) -> Self {
+    pub fn new(config: &Config, user: &User, scopes: Vec<AuthorizationScope>) -> Self {
         OAuth2AccessTokenClaims {
             iss: config.instance.base_uri.clone(),
-            aud: client_id.into(),
+            aud: config.instance.base_uri.clone(),
             sub: user.id.clone(),
             exp: get_current_timestamp() + 86_000,
             scopes,
@@ -73,20 +76,27 @@ struct OIDCIdTokenClaims {
     name: Option<String>,
     email: Option<String>,
     preferred_username: Option<String>,
-    roles: Vec<String>
+    roles: Vec<String>,
+    nonce: Option<String>
 }
 
 impl OIDCIdTokenClaims {
-    pub fn new(config: &Config, client_id: &str, user: &User) -> Self {
+    pub fn new(
+        config: &Config,
+        client_id: &str,
+        user: User,
+        nonce: Option<String>
+    ) -> Self {
         OIDCIdTokenClaims {
             iss: config.instance.base_uri.clone(),
             aud: client_id.into(),
-            sub: user.id.clone(),
+            sub: user.id,
             exp: get_current_timestamp() + 86_000,
-            email: user.email.clone(),
-            name: user.full_name.clone(),
-            preferred_username: Some(user.handle.clone()),
-            roles: user.roles.0.clone()
+            email: user.email,
+            name: user.full_name,
+            preferred_username: Some(user.handle),
+            roles: user.roles.0,
+            nonce
         }
     }
 }
diff --git a/lib/kernel/src/consts.rs b/lib/kernel/src/consts.rs
index 31fca20..9bdfaf2 100644
--- a/lib/kernel/src/consts.rs
+++ b/lib/kernel/src/consts.rs
@@ -1,4 +1,5 @@
 pub const DEFAULT_DB_PATH: &str = "/var/lib/minauthator/minauthator.db";
 pub const DEFAULT_ASSETS_PATH: &str = "/usr/local/lib/minauthator/assets";
 pub const DEFAULT_CONFIG_PATH: &str = "/etc/minauthator/config.toml";
+pub const DEFAULT_SIGNING_KEY_PATH: &str = "/etc/minauthator/secrets/jwt.key.pem";
 
diff --git a/lib/kernel/src/context.rs b/lib/kernel/src/context.rs
index 0c6e3b1..cb90e0d 100644
--- a/lib/kernel/src/context.rs
+++ b/lib/kernel/src/context.rs
@@ -1,11 +1,13 @@
-use std::{env, fs};
+use std::{env, fs, path::Path};
 use anyhow::{Result, Context, anyhow};
 use fully_pub::fully_pub;
 
 use log::info;
-use sqlx::{Pool, Sqlite};
 use crate::{
-    consts::{DEFAULT_CONFIG_PATH, DEFAULT_DB_PATH}, database::prepare_database, models::config::Config, repositories::storage::Storage
+    consts::{DEFAULT_CONFIG_PATH, DEFAULT_DB_PATH, DEFAULT_SIGNING_KEY_PATH},
+    database::prepare_database,
+    models::config::Config,
+    repositories::storage::Storage
 };
 
 /// get server config
@@ -26,9 +28,18 @@ struct StartKernelConfig {
 #[derive(Debug, Clone)]
 #[fully_pub]
 struct AppSecrets {
-    jwt_secret: String
+    /// RSA keypair (public, private) used to signed the JWT issued by minauthator in PEM conainer format
+    signing_keypair: (Vec<u8>, Vec<u8>)
 }
 
+#[derive(Debug, Clone)]
+#[fully_pub]
+struct ComputedConfig {
+    signing_public_key: Vec<u8>,
+    signing_private_key: Vec<u8>
+}
+
+
 #[derive(Debug, Clone)]
 #[fully_pub]
 struct KernelContext {
@@ -37,6 +48,19 @@ struct KernelContext {
     storage: Storage
 }
 
+fn get_signing_keypair(key_path: &str) -> Result<(Vec<u8>, Vec<u8>)> {
+    let key_path = Path::new(key_path);
+    let pub_key_path = key_path.with_extension("pub");
+    let private_key: Vec<u8> = fs::read_to_string(&key_path)
+        .context(format!("Failed to read private key from path {:?}.", key_path))?
+        .as_bytes().to_vec();
+    let public_key: Vec<u8> = fs::read_to_string(&pub_key_path)
+        .context(format!("Failed to read public key from path {:?}.", pub_key_path))?
+        .as_bytes().to_vec();
+
+    Ok((public_key, private_key))
+}
+
 pub async fn get_kernel_context(start_config: StartKernelConfig) -> Result<KernelContext> {
     env_logger::init();
     let _ = dotenvy::dotenv();
@@ -50,10 +74,13 @@ pub async fn get_kernel_context(start_config: StartKernelConfig) -> Result<Kerne
     let config: Config = get_config(config_path)
         .expect("Cannot get config.");
 
+    let signing_key_path = config.signing_key.clone().unwrap_or(DEFAULT_SIGNING_KEY_PATH.to_string());
+
+    // optionally load dotenv file
     let _ = dotenvy::dotenv();
+
     let secrets = AppSecrets {
-        jwt_secret: env::var("APP_JWT_SECRET")
-            .context("Expected APP_JWT_SECRET environment variable to exists.")?
+        signing_keypair: get_signing_keypair(&signing_key_path)?
     };
 
     Ok(KernelContext {
diff --git a/lib/kernel/src/models/authorization.rs b/lib/kernel/src/models/authorization.rs
index 4713871..8c2895b 100644
--- a/lib/kernel/src/models/authorization.rs
+++ b/lib/kernel/src/models/authorization.rs
@@ -25,6 +25,8 @@ struct Authorization {
     client_id: String,
     scopes: Json<Vec<AuthorizationScope>>,
 
+    nonce: Option<String>,
+
     /// defined in https://datatracker.ietf.org/doc/html/rfc6749#section-4.1.2
     code: String,
     last_used_at: Option<DateTime<Utc>>,
diff --git a/lib/kernel/src/models/config.rs b/lib/kernel/src/models/config.rs
index 57a275a..bf2d311 100644
--- a/lib/kernel/src/models/config.rs
+++ b/lib/kernel/src/models/config.rs
@@ -66,11 +66,6 @@ struct Role {
 struct Config {
     instance: InstanceConfig,
     applications: Vec<Application>,
-    roles: Vec<Role>
-}
-
-#[derive(Debug, Clone)]
-#[fully_pub]
-struct AppSecrets {
-    jwt_secret: String
+    roles: Vec<Role>,
+    signing_key: Option<String>
 }
diff --git a/lib/kernel/src/models/user.rs b/lib/kernel/src/models/user.rs
index 9634fa0..355fcdd 100644
--- a/lib/kernel/src/models/user.rs
+++ b/lib/kernel/src/models/user.rs
@@ -14,7 +14,7 @@ enum UserStatus {
     Active
 }
 
-#[derive(sqlx::FromRow, Deserialize, Serialize, Debug)]
+#[derive(sqlx::FromRow, Deserialize, Serialize, Debug, Clone)]
 #[fully_pub]
 struct User {
     /// uuid
diff --git a/migrations/all.sql b/migrations/all.sql
index 2f71c3c..adf3327 100644
--- a/migrations/all.sql
+++ b/migrations/all.sql
@@ -33,6 +33,7 @@ CREATE TABLE authorizations (
     client_id           TEXT NOT NULL,
     scopes              TEXT, -- json array of app scope (permissions)
     code                TEXT,
+    nonce               TEXT, -- code used to associate client session to id_token
 
     last_used_at        DATETIME,
     created_at          DATETIME NOT NULL
diff --git a/tests/hurl_integration/oidc_core/config.toml b/tests/hurl_integration/oidc_core/config.toml
index ad3f58e..df607aa 100644
--- a/tests/hurl_integration/oidc_core/config.toml
+++ b/tests/hurl_integration/oidc_core/config.toml
@@ -1,3 +1,5 @@
+signing_key = "tmp/secrets/signing.key"
+
 [instance]
 base_uri = "http://localhost:8086"
 name = "Example org"
diff --git a/tests/hurl_integration/oidc_core/main.hurl b/tests/hurl_integration/oidc_core/main.hurl
index 4d2c981..36e70db 100644
--- a/tests/hurl_integration/oidc_core/main.hurl
+++ b/tests/hurl_integration/oidc_core/main.hurl
@@ -1,6 +1,6 @@
 POST {{ base_url }}/login
 [FormParams]
-login: root
+login: john.doe
 password: root
 HTTP 303
 [Captures]
diff --git a/tests/hurl_integration/scenario_1/config.toml b/tests/hurl_integration/scenario_1/config.toml
index ad3f58e..df607aa 100644
--- a/tests/hurl_integration/scenario_1/config.toml
+++ b/tests/hurl_integration/scenario_1/config.toml
@@ -1,3 +1,5 @@
+signing_key = "tmp/secrets/signing.key"
+
 [instance]
 base_uri = "http://localhost:8086"
 name = "Example org"
diff --git a/tests/hurl_integration/scenario_1/main.hurl b/tests/hurl_integration/scenario_1/main.hurl
index 1e68473..6213536 100644
--- a/tests/hurl_integration/scenario_1/main.hurl
+++ b/tests/hurl_integration/scenario_1/main.hurl
@@ -27,7 +27,7 @@ handle: root
 email: root@johndoe.net
 full_name: John Doe
 website: https://johndoe.net
-picture: file,john_doe_profile_pic.jpg; image/jpeg
+avatar: file,john_doe_profile_pic.jpg; image/jpeg
 HTTP 200
 
 GET {{ base_url }}/me/authorizations
diff --git a/tests/hurl_integration/user_invitation_scenario/config.toml b/tests/hurl_integration/user_invitation_scenario/config.toml
index f85dc48..722fd33 100644
--- a/tests/hurl_integration/user_invitation_scenario/config.toml
+++ b/tests/hurl_integration/user_invitation_scenario/config.toml
@@ -1,3 +1,4 @@
+signing_key = "tmp/secrets/signing.key"
 applications = []
 
 roles = []