Managed to authenticate user using Webauthn

src/data/webauthn_manager.rs

@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::web;
 use webauthn_rs::{AuthenticationState, RegistrationState, Webauthn, WebauthnConfig};
-use webauthn_rs::proto::{CreationChallengeResponse, Credential, RegisterPublicKeyCredential, RequestChallengeResponse};
+use webauthn_rs::proto::{CreationChallengeResponse, Credential, PublicKeyCredential, RegisterPublicKeyCredential, RequestChallengeResponse};
 
 use crate::constants::APP_NAME;
 use crate::data::app_config::AppConfig;
@@ -45,6 +45,7 @@ pub struct RegisterKeyRequest {
 struct RegisterKeyOpaqueData {
     registration_state: RegistrationState,
     user_id: UserID,
+    // TODO : add time
 }
 
 pub struct AuthRequest {
@@ -56,6 +57,7 @@ pub struct AuthRequest {
 struct AuthStateOpaqueData {
     authentication_state: AuthenticationState,
     user_id: UserID,
+    // TODO : add time
 }
 
 
@@ -123,4 +125,17 @@ impl WebAuthManager {
             login_challenge,
         })
     }
+
+    pub fn finish_authentication(&self, user_id: &UserID, opaque_state: &str,
+                                 pub_cred: &PublicKeyCredential) -> Res {
+        let state: AuthStateOpaqueData = self.crypto_wrapper.decrypt(opaque_state)?;
+        if &state.user_id != user_id {
+            return Err(Box::new(
+                std::io::Error::new(ErrorKind::Other, "Invalid user for pubkey!")));
+        }
+
+        self.core.authenticate_credential(pub_cred, &state.authentication_state)?;
+
+        Ok(())
+    }
 }