fido-authenticator: Add large blobs support

This patch updates fido-authenticator to add support for the
largeBlobKey extension and the largeBlobs command in the test
configuration over USB.  See the fido-authenticator PR for more
information:
  Nitrokey/fido-authenticator#41

CHANGELOG.md

@@ -1,7 +1,12 @@
 # Unreleased
 
+### Features
+
 - Add an SE050 driver and its tests ([#335][])
 - Use SE050 entropy to bootstrap the random number generator ([#335][])
+- fido-authenticator: Implement the largeBlobKey extension and the largeBlobs command ([fido-authenticator#38][])
+
+[fido-authenticator#38]: https://github.com/Nitrokey/fido-authenticator/issues/38
 
 # 1.6.0 (2023-11-23)
 

Cargo.toml

@@ -13,17 +13,17 @@ version = "1.6.0"
 [patch.crates-io]
 # forked
 admin-app = { git = "https://github.com/Nitrokey/admin-app.git", tag = "v0.1.0-nitrokey.7" }
-ctap-types = { git = "https://github.com/Nitrokey/ctap-types", tag = "v0.1.2-nitrokey.4" }
-fido-authenticator = { git = "https://github.com/Nitrokey/fido-authenticator.git", tag = "v0.1.1-nitrokey.8" }
+fido-authenticator = { git = "https://github.com/Nitrokey/fido-authenticator.git", rev = "162ac6a2e603fb69944ff1679dced9752f0c7cf2" }
 flexiber = { git = "https://github.com/Nitrokey/flexiber", tag = "0.1.1.nitrokey" }
 lpc55-hal = { git = "https://github.com/Nitrokey/lpc55-hal", tag = "v0.3.0-nitrokey.2" }
 serde-indexed = { git = "https://github.com/nitrokey/serde-indexed.git", tag = "v0.1.0-nitrokey.2" }
 
 # unreleased upstream changes
 apdu-dispatch = { git = "https://github.com/Nitrokey/apdu-dispatch.git", tag = "v0.1.2-nitrokey.2" }
+ctap-types = { git = "https://github.com/trussed-dev/ctap-types.git", rev = "7d4ad69e64ad308944c012aef5b9cfd7654d9be8" }
 ctaphid-dispatch = { git = "https://github.com/Nitrokey/ctaphid-dispatch.git", tag = "v0.1.1-nitrokey.3" }
 iso7816 = { git = "https://github.com/Nitrokey/iso7816.git", tag = "v0.1.1-nitrokey.2"}
-trussed = { git = "https://github.com/trussed-dev/trussed.git", rev = "d97c64d0bc5f83ce22b0e0ed034a2b451616b3f9" }
+trussed = { git = "https://github.com/trussed-dev/trussed.git", rev = "b1781805a2e33615d2d00b8bec80c0b1f5870ca1" }
 usbd-ctaphid = { git = "https://github.com/Nitrokey/usbd-ctaphid.git", tag = "v0.1.0-nitrokey.2" }
 usbd-ccid = { git = "https://github.com/Nitrokey/usbd-ccid", tag = "v0.2.0-nitrokey.1" }
 littlefs2 = { git = "https://github.com/trussed-dev/littlefs2", rev = "e6c46e7ba5ae19129e457a2182e40a439c0322fe" }
@@ -36,7 +36,7 @@ piv-authenticator = { git = "https://github.com/Nitrokey/piv-authenticator", tag
 se05x = { git = "https://github.com/Nitrokey/se05x.git", tag = "v0.1.0"} 
 trussed-auth = { git = "https://github.com/trussed-dev/trussed-auth", rev = "62235294bd63977bbb88eb01e7ac44b8010eb450" }
 trussed-rsa-alloc = { git = "https://github.com/trussed-dev/trussed-rsa-backend.git", rev = "2f51478f0861ff8db19fdd5290f023ab6f4c2fb9" }
-trussed-staging = { git = "https://github.com/nitrokey/trussed-staging.git", tag = "v0.1.0-nitrokey-hmac256p256.1" }
+trussed-staging = { git = "https://github.com/Nitrokey/trussed-staging.git", branch = "hmacsha256p256-chunked" }
 trussed-usbip = { git = "https://github.com/Nitrokey/pc-usbip-runner.git", tag = "v0.0.1-nitrokey.3" }
 trussed-se050-backend = { git = "https://github.com/Nitrokey/trussed-se050-backend.git", tag = "v0.1.0-test-driver" }
 

components/apps/Cargo.toml

@@ -21,7 +21,7 @@ trussed-staging = { version = "0.1.0", features = ["wrap-key-to-file", "chunked"
 
 # apps
 admin-app = "0.1.0"
-fido-authenticator = { version = "0.1.1", features = ["dispatch"], optional = true }
+fido-authenticator = { version = "0.1.1", features = ["chunked", "dispatch"], optional = true }
 ndef-app = { path = "../ndef-app", optional = true }
 webcrypt = { version = "0.8.0", optional = true }
 secrets-app = { version = "0.13.0", features = ["apdu-dispatch", "ctaphid"], optional = true }

components/apps/src/lib.rs

@@ -95,6 +95,7 @@ pub trait Runner {
     type Se050Timer: 'static;
 
     fn uuid(&self) -> [u8; 16];
+    fn is_efs_available(&self) -> bool;
 }
 
 pub struct Data<R: Runner> {
@@ -451,26 +452,42 @@ impl<R: Runner> App<R> for FidoApp<R> {
     type Data = ();
     type Config = FidoConfig;
 
-    fn with_client(_runner: &R, trussed: Client<R>, _: (), config: &Self::Config) -> Self {
+    fn with_client(runner: &R, trussed: Client<R>, _: (), config: &Self::Config) -> Self {
         let skip_up_timeout = if config.disable_skip_up_timeout {
             None
         } else {
             Some(core::time::Duration::from_secs(2))
         };
+        let large_blobs = if cfg!(feature = "test") && runner.is_efs_available() {
+            Some(fido_authenticator::LargeBlobsConfig {
+                location: Location::External,
+                max_size: 4096,
+            })
+        } else {
+            None
+        };
         fido_authenticator::Authenticator::new(
             trussed,
             fido_authenticator::Conforming {},
             fido_authenticator::Config {
                 max_msg_size: usbd_ctaphid::constants::MESSAGE_SIZE,
                 skip_up_timeout,
                 max_resident_credential_count: Some(10),
+                large_blobs,
             },
         )
     }
     fn interrupt() -> Option<&'static InterruptFlag> {
         static INTERRUPT: InterruptFlag = InterruptFlag::new();
         Some(&INTERRUPT)
     }
+
+    fn backends(_runner: &R, _config: &Self::Config) -> &'static [BackendId<Backend>] {
+        &[
+            BackendId::Custom(Backend::Staging),
+            BackendId::Core,
+        ]
+    }
 }
 
 #[cfg(feature = "webcrypt")]

runners/embedded/src/lib.rs

@@ -275,13 +275,16 @@ pub fn init_apps(
         }
     };
 
+    let runner = types::Runner {
+        is_efs_available: !nfc_powered,
+    };
     let data = apps::Data {
         admin,
         #[cfg(feature = "provisioner")]
         provisioner,
         _marker: Default::default(),
     };
-    types::Apps::with_service(&types::Runner, trussed, data)
+    types::Apps::with_service(&runner, trussed, data)
 }
 
 #[cfg(feature = "se050")]

runners/embedded/src/types.rs

@@ -69,7 +69,9 @@ pub trait Soc {
     fn device_uuid() -> &'static Self::UUID;
 }
 
-pub struct Runner;
+pub struct Runner {
+    pub is_efs_available: bool,
+}
 
 impl apps::Runner for Runner {
     type Syscall = RunnerSyscall;
@@ -83,6 +85,10 @@ impl apps::Runner for Runner {
     fn uuid(&self) -> [u8; 16] {
         *<SocT as Soc>::device_uuid()
     }
+
+    fn is_efs_available(&self) -> bool {
+        self.is_efs_available
+    }
 }
 
 // 8KB of RAM

runners/usbip/src/main.rs

@@ -120,6 +120,10 @@ impl apps::Runner for Runner {
     fn uuid(&self) -> [u8; 16] {
         self.serial
     }
+
+    fn is_efs_available(&self) -> bool {
+        true
+    }
 }
 
 fn main() {