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Migrate to upstream trussed and trussed-staging for streaming writes
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sosthene-nitrokey committed Apr 26, 2023
1 parent b5ccdd8 commit 4e2db7d
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Showing 5 changed files with 96 additions and 61 deletions.
9 changes: 5 additions & 4 deletions Cargo.toml
Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@ log = "0.4"
heapless-bytes = "0.3.0"
subtle = { version = "2", default-features = false }
trussed-rsa-alloc = { version = "0.1.0", features = ["raw"] }
trussed-staging = { version = "0.1.0", features = ["chunked", "encrypted-chunked"]}

[dev-dependencies]
littlefs2 = "0.3.2"
Expand All @@ -58,7 +59,7 @@ usbd-ccid = { version = "0.2.0", features = ["highspeed-usb"]}
rand = "0.8.5"

[features]
default = []
default = ["virt"]
strict-pin = []
std = []
vpicc = ["std", "dep:vpicc", "virt"]
Expand All @@ -74,10 +75,10 @@ log-warn = []
log-error = []

[patch.crates-io]
trussed = { git = "https://github.com/Nitrokey/trussed", tag = "v0.1.0-nitrokey.9" }
trussed-auth = { git = "https://github.com/trussed-dev/trussed-auth", tag = "v0.2.1"}
trussed = { git = "https://github.com/trussed-dev/trussed" , rev = "55ea391367fce4bf5093ff2d3c79041d7aef0485" }
trussed-auth = { git = "https://github.com/trussed-dev/trussed-auth.git", rev = "6beabd125ea57e87bf642e18278fcc2ba224c50c"}
trussed-rsa-alloc = { git = "https://github.com/Nitrokey/trussed-rsa-backend.git", tag = "v0.1.0"}
littlefs2 = { git = "https://github.com/Nitrokey/littlefs2", tag = "v0.3.2-nitrokey-2" }
trussed-staging = { git = "https://github.com/Nitrokey/trussed-staging", rev = "a3df414fd569564c745d1a597a89869e57ece1cf" }

[profile.dev.package.rsa]
opt-level = 2
Expand Down
4 changes: 1 addition & 3 deletions src/dispatch.rs
Original file line number Diff line number Diff line change
Expand Up @@ -4,13 +4,11 @@
use crate::{reply::Reply, Authenticator, /*constants::PIV_AID,*/ Result};

use apdu_dispatch::{app::App, command, response, Command};
use trussed::client;
use trussed_auth::AuthClient;

#[cfg(feature = "apdu-dispatch")]
impl<T> App<{ command::SIZE }, { response::SIZE }> for Authenticator<T>
where
T: client::Client + AuthClient + client::Ed255 + client::Tdes,
T: crate::Client,
{
fn select(&mut self, _apdu: &Command, reply: &mut response::Data) -> Result {
self.select(Reply(reply))
Expand Down
15 changes: 13 additions & 2 deletions src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@ pub mod state;
mod tlv;

pub use piv_types::{AsymmetricAlgorithms, Pin, Puk};
use trussed_staging::streaming::ChunkedClient;

#[cfg(feature = "virt")]
pub mod virt;
Expand Down Expand Up @@ -100,7 +101,7 @@ impl<T> iso7816::App for Authenticator<T> {

impl<T> Authenticator<T>
where
T: client::Client + AuthClient + client::Ed255 + client::Tdes,
T: Client,
{
pub fn new(trussed: T, options: Options) -> Self {
// seems like RefCell is not the right thing, we want something like `Rc` instead,
Expand Down Expand Up @@ -219,7 +220,7 @@ where
}
}

impl<'a, T: trussed::Client + AuthClient + trussed::client::Ed255> LoadedAuthenticator<'a, T> {
impl<'a, T: Client> LoadedAuthenticator<'a, T> {
pub fn yubico_set_administration_key<const R: usize>(
&mut self,
data: &[u8],
Expand Down Expand Up @@ -991,3 +992,13 @@ impl<'a, T: trussed::Client + AuthClient + trussed::client::Ed255> LoadedAuthent
Ok(())
}
}

/// Super trait with all trussed extensions required by opcard
pub trait Client:
trussed::Client + AuthClient + ChunkedClient + trussed::client::Ed255 + client::Tdes
{
}
impl<C: trussed::Client + AuthClient + ChunkedClient + trussed::client::Ed255 + client::Tdes> Client
for C
{
}
88 changes: 40 additions & 48 deletions src/state.rs
Original file line number Diff line number Diff line change
Expand Up @@ -8,15 +8,13 @@ use flexiber::EncodableHeapless;
use heapless::Vec;
use heapless_bytes::Bytes;
use iso7816::Status;
use trussed::types::OpenSeekFrom;
use trussed::{
api::reply::Metadata,
config::MAX_MESSAGE_LENGTH,
syscall, try_syscall,
types::{KeyId, KeySerialization, Location, Mechanism, PathBuf, StorageAttributes},
utils,
};
use trussed_auth::AuthClient;
use trussed_staging::streaming::utils;

use crate::piv_types::CardHolderUniqueIdentifier;
use crate::reply::Reply;
Expand Down Expand Up @@ -192,7 +190,7 @@ pub struct State {
}

impl State {
pub fn load<T: trussed::Client + AuthClient>(
pub fn load<T: crate::Client>(
&mut self,
client: &mut T,
storage: Location,
Expand All @@ -206,7 +204,7 @@ impl State {
})
}

pub fn persistent<T: trussed::Client + AuthClient>(
pub fn persistent<T: crate::Client>(
&mut self,
client: &mut T,
storage: Location,
Expand Down Expand Up @@ -334,41 +332,33 @@ impl Persistent {
const DEFAULT_PIN: Pin = Pin(*b"123456\xff\xff");
const DEFAULT_PUK: Puk = Puk(*b"12345678");

pub fn remaining_pin_retries<T: trussed::Client + AuthClient>(&self, client: &mut T) -> u8 {
pub fn remaining_pin_retries<T: crate::Client>(&self, client: &mut T) -> u8 {
try_syscall!(client.pin_retries(PinType::UserPin))
.map(|r| r.retries.unwrap_or_default())
.unwrap_or(0)
}

pub fn remaining_puk_retries<T: trussed::Client + AuthClient>(&self, client: &mut T) -> u8 {
pub fn remaining_puk_retries<T: crate::Client>(&self, client: &mut T) -> u8 {
try_syscall!(client.pin_retries(PinType::Puk))
.map(|r| r.retries.unwrap_or_default())
.unwrap_or(0)
}

pub fn verify_pin<T: trussed::Client + AuthClient>(
&mut self,
value: &Pin,
client: &mut T,
) -> bool {
pub fn verify_pin<T: crate::Client>(&mut self, value: &Pin, client: &mut T) -> bool {
let pin = Bytes::from_slice(&value.0).expect("Convertion of static array");
try_syscall!(client.check_pin(PinType::UserPin, pin))
.map(|r| r.success)
.unwrap_or(false)
}

pub fn verify_puk<T: trussed::Client + AuthClient>(
&mut self,
value: &Puk,
client: &mut T,
) -> bool {
pub fn verify_puk<T: crate::Client>(&mut self, value: &Puk, client: &mut T) -> bool {
let puk = Bytes::from_slice(&value.0).expect("Convertion of static array");
try_syscall!(client.check_pin(PinType::Puk, puk))
.map(|r| r.success)
.unwrap_or(false)
}

pub fn change_pin<T: trussed::Client + AuthClient>(
pub fn change_pin<T: crate::Client>(
&mut self,
old_value: &Pin,
new_value: &Pin,
Expand All @@ -381,7 +371,7 @@ impl Persistent {
.unwrap_or(false)
}

pub fn change_puk<T: trussed::Client + AuthClient>(
pub fn change_puk<T: crate::Client>(
&mut self,
old_value: &Puk,
new_value: &Puk,
Expand All @@ -394,7 +384,7 @@ impl Persistent {
.unwrap_or(false)
}

pub fn set_pin<T: trussed::Client + AuthClient>(
pub fn set_pin<T: crate::Client>(
&mut self,
new_pin: Pin,
client: &mut T,
Expand All @@ -413,7 +403,7 @@ impl Persistent {
.map(drop)
}

pub fn set_puk<T: trussed::Client + AuthClient>(
pub fn set_puk<T: crate::Client>(
&mut self,
new_puk: Puk,
client: &mut T,
Expand All @@ -426,22 +416,22 @@ impl Persistent {
})
.map(drop)
}
pub fn reset_pin<T: trussed::Client + AuthClient>(
pub fn reset_pin<T: crate::Client>(
&mut self,
new_pin: Pin,
client: &mut T,
) -> Result<(), Status> {
self.set_pin(new_pin, client)
}
pub fn reset_puk<T: trussed::Client + AuthClient>(
pub fn reset_puk<T: crate::Client>(
&mut self,
new_puk: Puk,
client: &mut T,
) -> Result<(), Status> {
self.set_puk(new_puk, client)
}

pub fn reset_administration_key(&mut self, client: &mut impl trussed::Client) {
pub fn reset_administration_key(&mut self, client: &mut impl crate::Client) {
self.set_administration_key(
YUBICO_DEFAULT_MANAGEMENT_KEY,
YUBICO_DEFAULT_MANAGEMENT_KEY_ALG,
Expand All @@ -453,7 +443,7 @@ impl Persistent {
&mut self,
management_key: &[u8],
alg: AdministrationAlgorithm,
client: &mut impl trussed::Client,
client: &mut impl crate::Client,
) {
// let new_management_key = syscall!(self.trussed.unsafe_inject_tdes_key(
let id = syscall!(client.unsafe_inject_key(
Expand Down Expand Up @@ -483,7 +473,7 @@ impl Persistent {
&mut self,
key: AsymmetricKeyReference,
alg: AsymmetricAlgorithms,
client: &mut impl trussed::Client,
client: &mut impl crate::Client,
) -> KeyId {
let id = syscall!(client.generate_key(
alg.key_mechanism(),
Expand All @@ -498,10 +488,7 @@ impl Persistent {
id
}

pub fn initialize<T: trussed::Client + AuthClient>(
client: &mut T,
storage: Location,
) -> Result<Self, Status> {
pub fn initialize<T: crate::Client>(client: &mut T, storage: Location) -> Result<Self, Status> {
info!("initializing PIV state");
let administration = KeyWithAlg {
id: syscall!(client.unsafe_inject_key(
Expand Down Expand Up @@ -566,7 +553,7 @@ impl Persistent {
Ok(state)
}

pub fn load_or_initialize<T: trussed::Client + AuthClient>(
pub fn load_or_initialize<T: crate::Client>(
client: &mut T,
storage: Location,
) -> Result<Self, Status> {
Expand All @@ -584,21 +571,21 @@ impl Persistent {
Ok(parsed)
}

pub fn save(&mut self, client: &mut impl trussed::Client) {
pub fn save(&mut self, client: &mut impl crate::Client) {
let data: trussed::types::Message = trussed::cbor_serialize_bytes(&self).unwrap();

syscall!(client.write_file(self.storage, PathBuf::from(Self::FILENAME), data, None,));
}

pub fn timestamp(&mut self, client: &mut impl trussed::Client) -> u32 {
pub fn timestamp(&mut self, client: &mut impl crate::Client) -> u32 {
self.timestamp += 1;
self.save(client);
self.timestamp
}
}

fn load_if_exists(
client: &mut impl trussed::Client,
client: &mut impl crate::Client,
location: Location,
path: &PathBuf,
) -> Result<Option<Bytes<MAX_MESSAGE_LENGTH>>, Status> {
Expand All @@ -622,26 +609,30 @@ fn load_if_exists(

/// Returns false if the file does not exist
fn load_if_exists_streaming<const R: usize>(
client: &mut impl trussed::Client,
client: &mut impl crate::Client,
location: Location,
path: &PathBuf,
mut buffer: Reply<'_, R>,
) -> Result<bool, Status> {
let mut read_len = 0;
let file_len;
match try_syscall!(client.read_file_chunk(location, path.clone(), OpenSeekFrom::Start(0))) {
match try_syscall!(client.start_chunked_read(location, path.clone())) {
Ok(r) => {
read_len += r.data.len();
file_len = r.len;
buffer.append_len(file_len)?;
buffer.expand(&r.data)?;
if !r.data.is_full() {
debug_assert_eq!(read_len, file_len);
return Ok(true);
}
}
Err(_) => match try_syscall!(client.entry_metadata(location, path.clone())) {
Err(_err) => match try_syscall!(client.entry_metadata(location, path.clone())) {
Ok(Metadata { metadata: None }) => return Ok(false),
Ok(Metadata {
metadata: Some(_metadata),
}) => {
error!("File {path} exists but couldn't be read: {_metadata:?}");
error!("File {path} exists but couldn't be read: {_metadata:?}, {_err:?}");
return Err(Status::UnspecifiedPersistentExecutionError);
}
Err(_err) => {
Expand All @@ -651,15 +642,16 @@ fn load_if_exists_streaming<const R: usize>(
},
}

while read_len < file_len {
match try_syscall!(client.read_file_chunk(
location,
path.clone(),
OpenSeekFrom::Start(read_len as u32)
)) {
loop {
match try_syscall!(client.read_file_chunk()) {
Ok(r) => {
debug_assert_eq!(r.len, file_len);
read_len += r.data.len();
buffer.expand(&r.data)?;
if !r.data.is_full() {
debug_assert_eq!(read_len, file_len);
break;
}
}
Err(_err) => {
error!("Failed to read chunk: {:?}", _err);
Expand Down Expand Up @@ -732,7 +724,7 @@ impl ContainerStorage {

pub fn exists(
self,
client: &mut impl trussed::Client,
client: &mut impl crate::Client,
storage: Location,
) -> Result<bool, Status> {
match try_syscall!(client.entry_metadata(storage, self.path())) {
Expand All @@ -759,7 +751,7 @@ impl ContainerStorage {
// Write the length of the file and write
pub fn load<const R: usize>(
self,
client: &mut impl trussed::Client,
client: &mut impl crate::Client,
storage: Location,
mut reply: Reply<'_, R>,
) -> Result<bool, Status> {
Expand All @@ -778,11 +770,11 @@ impl ContainerStorage {

pub fn save(
self,
client: &mut impl trussed::Client,
client: &mut impl crate::Client,
bytes: &[u8],
storage: Location,
) -> Result<(), Status> {
utils::write_all(client, storage, self.path(), bytes, None).map_err(|_err| {
utils::write_all(client, storage, self.path(), bytes, None, None).map_err(|_err| {
error!("Failed to write data object: {:?}", _err);
Status::UnspecifiedNonpersistentExecutionError
})
Expand Down
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