Get auth challenge

src/data/webauthn_manager.rs

@@ -2,8 +2,8 @@ use std::io::ErrorKind;
 use std::sync::Arc;
 
 use actix_web::web;
-use webauthn_rs::{RegistrationState, Webauthn, WebauthnConfig};
-use webauthn_rs::proto::{CreationChallengeResponse, Credential, RegisterPublicKeyCredential};
+use webauthn_rs::{AuthenticationState, RegistrationState, Webauthn, WebauthnConfig};
+use webauthn_rs::proto::{CreationChallengeResponse, Credential, RegisterPublicKeyCredential, RequestChallengeResponse};
 
 use crate::constants::APP_NAME;
 use crate::data::app_config::AppConfig;
@@ -31,22 +31,34 @@ impl WebauthnConfig for WebAuthnAppConfig {
     }
 }
 
-pub struct RegisterKeyRequest {
-    pub opaque_state: String,
-    pub creation_challenge: CreationChallengeResponse,
-}
-
 #[derive(Clone, Debug, serde::Serialize, serde::Deserialize)]
 pub struct WebauthnPubKey {
     creds: Credential,
 }
 
+pub struct RegisterKeyRequest {
+    pub opaque_state: String,
+    pub creation_challenge: CreationChallengeResponse,
+}
+
 #[derive(Debug, serde::Serialize, serde::Deserialize)]
 struct RegisterKeyOpaqueData {
     registration_state: RegistrationState,
     user_id: UserID,
 }
 
+pub struct AuthRequest {
+    pub opaque_state: String,
+    pub login_challenge: RequestChallengeResponse,
+}
+
+#[derive(Debug, serde::Serialize, serde::Deserialize)]
+struct AuthStateOpaqueData {
+    authentication_state: AuthenticationState,
+    user_id: UserID,
+}
+
+
 pub type WebAuthManagerReq = web::Data<Arc<WebAuthManager>>;
 
 pub struct WebAuthManager {
@@ -97,4 +109,18 @@ impl WebAuthManager {
 
         Ok(WebauthnPubKey { creds: res.0 })
     }
+
+    pub fn start_authentication(&self, user_id: &UserID, key: &WebauthnPubKey) -> Res<AuthRequest> {
+        let (login_challenge, authentication_state) = self.core.generate_challenge_authenticate(vec![
+            key.creds.clone()
+        ])?;
+
+        Ok(AuthRequest {
+            opaque_state: self.crypto_wrapper.encrypt(&AuthStateOpaqueData {
+                authentication_state,
+                user_id: user_id.clone(),
+            })?,
+            login_challenge,
+        })
+    }
 }