| //! Components needed to verify TUF metadata and targets. |
| |
| use chrono::offset::Utc; |
| use log::info; |
| use std::collections::{HashMap, HashSet}; |
| use std::marker::PhantomData; |
| |
| use crate::crypto::KeyId; |
| use crate::error::Error; |
| use crate::interchange::DataInterchange; |
| use crate::metadata::{ |
| Delegations, Metadata, MetadataPath, Role, RootMetadata, SignedMetadata, SnapshotMetadata, |
| TargetDescription, TargetsMetadata, TimestampMetadata, VirtualTargetPath, |
| }; |
| use crate::Result; |
| |
| /// Contains trusted TUF metadata and can be used to verify other metadata and targets. |
| #[derive(Debug)] |
| pub struct Tuf<D: DataInterchange> { |
| root: SignedMetadata<D, RootMetadata>, |
| snapshot: Option<SignedMetadata<D, SnapshotMetadata>>, |
| targets: Option<SignedMetadata<D, TargetsMetadata>>, |
| timestamp: Option<SignedMetadata<D, TimestampMetadata>>, |
| delegations: HashMap<MetadataPath, SignedMetadata<D, TargetsMetadata>>, |
| interchange: PhantomData<D>, |
| } |
| |
| impl<D: DataInterchange> Tuf<D> { |
| /// Create a new `TUF` struct from a known set of pinned root keys that are used to verify the |
| /// signed metadata. |
| pub fn from_root_pinned<'a, I>( |
| mut signed_root: SignedMetadata<D, RootMetadata>, |
| root_key_ids: I, |
| ) -> Result<Self> |
| where |
| I: IntoIterator<Item = &'a KeyId>, |
| { |
| let root_key_ids = root_key_ids.into_iter().collect::<HashSet<&KeyId>>(); |
| |
| signed_root |
| .signatures_mut() |
| .retain(|s| root_key_ids.contains(s.key_id())); |
| Self::from_root(signed_root) |
| } |
| |
| /// Create a new `TUF` struct from a piece of metadata that is assumed to be trusted. |
| /// |
| /// **WARNING**: This is trust-on-first-use (TOFU) and offers weaker security guarantees than |
| /// the related method `from_root_pinned`. |
| pub fn from_root(signed_root: SignedMetadata<D, RootMetadata>) -> Result<Self> { |
| { |
| let root = signed_root.as_ref(); |
| signed_root.verify( |
| root.root().threshold(), |
| root.keys().iter().filter_map(|(k, v)| { |
| if root.root().key_ids().contains(k) { |
| Some(v) |
| } else { |
| None |
| } |
| }), |
| )?; |
| } |
| Ok(Tuf { |
| root: signed_root, |
| snapshot: None, |
| targets: None, |
| timestamp: None, |
| delegations: HashMap::new(), |
| interchange: PhantomData, |
| }) |
| } |
| |
| /// An immutable reference to the root metadata. |
| pub fn root(&self) -> &RootMetadata { |
| self.root.as_ref() |
| } |
| |
| /// An immutable reference to the optional snapshot metadata. |
| pub fn snapshot(&self) -> Option<&SnapshotMetadata> { |
| self.snapshot.as_ref().map(|t| t.as_ref()) |
| } |
| |
| /// An immutable reference to the optional targets metadata. |
| pub fn targets(&self) -> Option<&TargetsMetadata> { |
| self.targets.as_ref().map(|t| t.as_ref()) |
| } |
| |
| /// An immutable reference to the optional timestamp metadata. |
| pub fn timestamp(&self) -> Option<&TimestampMetadata> { |
| self.timestamp.as_ref().map(|t| t.as_ref()) |
| } |
| |
| /// An immutable reference to the delegated metadata. |
| pub fn delegations(&self) -> &HashMap<MetadataPath, SignedMetadata<D, TargetsMetadata>> { |
| &self.delegations |
| } |
| |
| /// An immutable reference to the root metadata. |
| pub fn signed_root(&self) -> &SignedMetadata<D, RootMetadata> { |
| &self.root |
| } |
| |
| /// An immutable reference to the optional snapshot metadata. |
| pub fn signed_snapshot(&self) -> Option<&SignedMetadata<D, SnapshotMetadata>> { |
| self.snapshot.as_ref() |
| } |
| |
| /// An immutable reference to the optional targets metadata. |
| pub fn signed_targets(&self) -> Option<&SignedMetadata<D, TargetsMetadata>> { |
| self.targets.as_ref() |
| } |
| |
| /// An immutable reference to the optional timestamp metadata. |
| pub fn signed_timestamp(&self) -> Option<&SignedMetadata<D, TimestampMetadata>> { |
| self.timestamp.as_ref() |
| } |
| |
| fn current_timestamp_version(&self) -> u32 { |
| self.timestamp |
| .as_ref() |
| .map(|t| t.as_ref().version()) |
| .unwrap_or(0) |
| } |
| |
| fn current_snapshot_version(&self) -> u32 { |
| self.snapshot |
| .as_ref() |
| .map(|t| t.as_ref().version()) |
| .unwrap_or(0) |
| } |
| |
| fn current_targets_version(&self) -> u32 { |
| self.targets |
| .as_ref() |
| .map(|t| t.as_ref().version()) |
| .unwrap_or(0) |
| } |
| |
| fn current_delegation_version(&self, role: &MetadataPath) -> u32 { |
| self.delegations |
| .get(role) |
| .map(|t| t.as_ref().version()) |
| .unwrap_or(0) |
| } |
| |
| /// Verify and update the root metadata. |
| pub fn update_root(&mut self, signed_root: SignedMetadata<D, RootMetadata>) -> Result<bool> { |
| { |
| let old_root = self.root.as_ref(); |
| let new_root = signed_root.as_ref(); |
| |
| // First, check that the new root was signed by the old root. |
| signed_root.verify( |
| old_root.root().threshold(), |
| old_root.keys().iter().filter_map(|(k, v)| { |
| if old_root.root().key_ids().contains(k) { |
| Some(v) |
| } else { |
| None |
| } |
| }), |
| )?; |
| |
| // Next, make sure the new root has a higher version than the old root. |
| if new_root.version() == old_root.version() { |
| info!( |
| "Attempted to update root to new metadata with the same version. \ |
| Refusing to update." |
| ); |
| return Ok(false); |
| } else if new_root.version() < old_root.version() { |
| return Err(Error::VerificationFailure(format!( |
| "Attempted to roll back root metadata at version {} to {}.", |
| old_root.version(), |
| new_root.version() |
| ))); |
| } |
| |
| // Finally, make sure the new root was signed by the keys in the new root. |
| signed_root.verify( |
| new_root.root().threshold(), |
| new_root.keys().iter().filter_map(|(k, v)| { |
| if new_root.root().key_ids().contains(k) { |
| Some(v) |
| } else { |
| None |
| } |
| }), |
| )?; |
| } |
| |
| self.purge_metadata(); |
| |
| self.root = signed_root; |
| Ok(true) |
| } |
| |
| /// Verify and update the timestamp metadata. |
| pub fn update_timestamp( |
| &mut self, |
| signed_timestamp: SignedMetadata<D, TimestampMetadata>, |
| ) -> Result<bool> { |
| { |
| let root = self.root.as_ref(); |
| let timestamp = signed_timestamp.as_ref(); |
| |
| // First, make sure the root signed the metadata. |
| signed_timestamp.verify( |
| root.timestamp().threshold(), |
| root.keys().iter().filter_map(|(k, v)| { |
| if root.timestamp().key_ids().contains(k) { |
| Some(v) |
| } else { |
| None |
| } |
| }), |
| )?; |
| |
| // Next, make sure the timestamp hasn't expired. |
| if timestamp.expires() <= &Utc::now() { |
| return Err(Error::ExpiredMetadata(Role::Timestamp)); |
| } |
| |
| // Next, make sure the new metadata has a higher version than the old metadata. |
| let current_version = self.current_timestamp_version(); |
| |
| if timestamp.version() < current_version { |
| return Err(Error::VerificationFailure(format!( |
| "Attempted to roll back timestamp metadata at version {} to {}.", |
| current_version, |
| timestamp.version() |
| ))); |
| } else if timestamp.version() == current_version { |
| return Ok(false); |
| } |
| |
| if self.current_snapshot_version() != timestamp.snapshot().version() { |
| self.snapshot = None; |
| } |
| } |
| |
| self.timestamp = Some(signed_timestamp); |
| Ok(true) |
| } |
| |
| /// Verify and update the snapshot metadata. |
| pub fn update_snapshot( |
| &mut self, |
| signed_snapshot: SignedMetadata<D, SnapshotMetadata>, |
| ) -> Result<bool> { |
| { |
| let root = self.safe_root_ref()?; |
| let timestamp = self.safe_timestamp_ref()?; |
| let current_version = self.current_snapshot_version(); |
| |
| if timestamp.snapshot().version() < current_version { |
| return Err(Error::VerificationFailure(format!( |
| "Attempted to roll back snapshot metadata at version {} to {}.", |
| current_version, |
| timestamp.snapshot().version() |
| ))); |
| } else if timestamp.snapshot().version() == current_version { |
| return Ok(false); |
| } |
| |
| signed_snapshot.verify( |
| root.snapshot().threshold(), |
| self.root.as_ref().keys().iter().filter_map(|(k, v)| { |
| if root.snapshot().key_ids().contains(k) { |
| Some(v) |
| } else { |
| None |
| } |
| }), |
| )?; |
| |
| let snapshot = signed_snapshot.as_ref(); |
| |
| if snapshot.version() != timestamp.snapshot().version() { |
| return Err(Error::VerificationFailure(format!( |
| "The timestamp metadata reported that the snapshot metadata should be at \ |
| version {} but version {} was found instead.", |
| timestamp.snapshot().version(), |
| snapshot.version() |
| ))); |
| } |
| |
| // Note: this doesn't check the expiration because we need to be able to update it |
| // regardless so we can prevent rollback attacks againsts targets/delegations. |
| }; |
| |
| if self |
| .targets |
| .as_ref() |
| .map(|s| s.as_ref().version()) |
| .unwrap_or(0) |
| != signed_snapshot |
| .as_ref() |
| .meta() |
| .get(&MetadataPath::from_role(&Role::Targets)) |
| .map(|m| m.version()) |
| .unwrap_or(0) |
| { |
| self.targets = None; |
| } |
| |
| self.snapshot = Some(signed_snapshot); |
| self.purge_delegations(); |
| Ok(true) |
| } |
| |
| fn purge_delegations(&mut self) { |
| let purge = { |
| let snapshot = match self.snapshot() { |
| Some(s) => s, |
| None => return, |
| }; |
| let mut purge = HashSet::new(); |
| for (role, definition) in snapshot.meta().iter() { |
| let delegation = match self.delegations.get(role) { |
| Some(d) => d, |
| None => continue, |
| }; |
| |
| if delegation.as_ref().version() > definition.version() { |
| let _ = purge.insert(role.clone()); |
| continue; |
| } |
| } |
| |
| purge |
| }; |
| |
| for role in &purge { |
| let _ = self.delegations.remove(role); |
| } |
| } |
| |
| /// Verify and update the targets metadata. |
| pub fn update_targets( |
| &mut self, |
| signed_targets: SignedMetadata<D, TargetsMetadata>, |
| ) -> Result<bool> { |
| { |
| let root = self.safe_root_ref()?; |
| let snapshot = self.safe_snapshot_ref()?; |
| let targets_description = snapshot |
| .meta() |
| .get(&MetadataPath::from_role(&Role::Targets)) |
| .ok_or_else(|| { |
| Error::VerificationFailure( |
| "Snapshot metadata had no description of the targets metadata".into(), |
| ) |
| })?; |
| |
| let current_version = self.current_targets_version(); |
| |
| if targets_description.version() < current_version { |
| return Err(Error::VerificationFailure(format!( |
| "Attempted to roll back targets metadata at version {} to {}.", |
| current_version, |
| targets_description.version() |
| ))); |
| } else if targets_description.version() == current_version { |
| return Ok(false); |
| } |
| |
| signed_targets.verify( |
| root.targets().threshold(), |
| root.keys().iter().filter_map(|(k, v)| { |
| if root.targets().key_ids().contains(k) { |
| Some(v) |
| } else { |
| None |
| } |
| }), |
| )?; |
| |
| let targets = signed_targets.as_ref(); |
| |
| if targets.version() != targets_description.version() { |
| return Err(Error::VerificationFailure(format!( |
| "The timestamp metadata reported that the targets metadata should be at \ |
| version {} but version {} was found instead.", |
| targets_description.version(), |
| targets.version() |
| ))); |
| } |
| |
| if targets.expires() <= &Utc::now() { |
| return Err(Error::ExpiredMetadata(Role::Snapshot)); |
| } |
| } |
| |
| self.targets = Some(signed_targets); |
| Ok(true) |
| } |
| |
| /// Verify and update a delegation metadata. |
| pub fn update_delegation( |
| &mut self, |
| role: &MetadataPath, |
| signed_delegation: SignedMetadata<D, TargetsMetadata>, |
| ) -> Result<bool> { |
| { |
| let _ = self.safe_root_ref()?; |
| let snapshot = self.safe_snapshot_ref()?; |
| let targets = self.safe_targets_ref()?; |
| let targets_delegations = match targets.delegations() { |
| Some(d) => d, |
| None => { |
| return Err(Error::VerificationFailure( |
| "Delegations not authorized".into(), |
| )); |
| } |
| }; |
| |
| let delegation_description = match snapshot.meta().get(role) { |
| Some(d) => d, |
| None => { |
| return Err(Error::VerificationFailure(format!( |
| "The degated role {:?} was not present in the snapshot metadata.", |
| role |
| ))); |
| } |
| }; |
| |
| let current_version = self.current_delegation_version(role); |
| |
| if delegation_description.version() < current_version { |
| return Err(Error::VerificationFailure(format!( |
| "Snapshot metadata did listed delegation {:?} version as {} but current\ |
| version is {}", |
| role, |
| delegation_description.version(), |
| current_version |
| ))); |
| } else if current_version == delegation_description.version() { |
| return Ok(false); |
| } |
| |
| for delegated_targets in self.delegations.values() { |
| let parent = match delegated_targets.as_ref().delegations() { |
| Some(d) => d, |
| None => &targets_delegations, |
| }; |
| |
| let delegation = match parent.roles().iter().find(|r| r.role() == role) { |
| Some(d) => d, |
| None => continue, |
| }; |
| |
| signed_delegation.verify( |
| delegation.threshold(), |
| parent.keys().iter().filter_map(|(k, v)| { |
| if delegation.key_ids().contains(k) { |
| Some(v) |
| } else { |
| None |
| } |
| }), |
| )?; |
| } |
| |
| let delegation = signed_delegation.as_ref(); |
| if delegation.version() != delegation_description.version() { |
| return Err(Error::VerificationFailure(format!( |
| "The snapshot metadata reported that the delegation {:?} should be at \ |
| version {} but version {} was found instead.", |
| role, |
| delegation_description.version(), |
| delegation.version(), |
| ))); |
| } |
| |
| if delegation.expires() <= &Utc::now() { |
| // TODO this needs to be chagned to accept a MetadataPath and not Role |
| return Err(Error::ExpiredMetadata(Role::Targets)); |
| } |
| } |
| |
| let _ = self.delegations.insert(role.clone(), signed_delegation); |
| |
| Ok(true) |
| } |
| |
| /// Get a reference to the description needed to verify the target defined by the given |
| /// `VirtualTargetPath`. Returns an `Error` if the target is not defined in the trusted |
| /// metadata. This may mean the target exists somewhere in the metadata, but the chain of trust |
| /// to that target may be invalid or incomplete. |
| pub fn target_description(&self, target_path: &VirtualTargetPath) -> Result<TargetDescription> { |
| let _ = self.safe_root_ref()?; |
| let _ = self.safe_snapshot_ref()?; |
| let targets = self.safe_targets_ref()?; |
| |
| if let Some(d) = targets.targets().get(target_path) { |
| return Ok(d.clone()); |
| } |
| |
| fn lookup<D: DataInterchange>( |
| tuf: &Tuf<D>, |
| default_terminate: bool, |
| current_depth: u32, |
| target_path: &VirtualTargetPath, |
| delegations: &Delegations, |
| parents: &[HashSet<VirtualTargetPath>], |
| visited: &mut HashSet<MetadataPath>, |
| ) -> (bool, Option<TargetDescription>) { |
| for delegation in delegations.roles() { |
| if visited.contains(delegation.role()) { |
| return (delegation.terminating(), None); |
| } |
| let _ = visited.insert(delegation.role().clone()); |
| |
| let mut new_parents = parents.to_owned(); |
| new_parents.push(delegation.paths().clone()); |
| |
| if current_depth > 0 && !target_path.matches_chain(&parents) { |
| return (delegation.terminating(), None); |
| } |
| |
| let targets = match tuf.delegations.get(delegation.role()) { |
| Some(t) => t.as_ref(), |
| None => return (delegation.terminating(), None), |
| }; |
| |
| if targets.expires() <= &Utc::now() { |
| return (delegation.terminating(), None); |
| } |
| |
| if let Some(d) = targets.targets().get(target_path) { |
| return (delegation.terminating(), Some(d.clone())); |
| } |
| |
| if let Some(d) = targets.delegations() { |
| let mut new_parents = parents.to_vec(); |
| new_parents.push(delegation.paths().clone()); |
| let (term, res) = lookup( |
| tuf, |
| delegation.terminating(), |
| current_depth + 1, |
| target_path, |
| d, |
| &new_parents, |
| visited, |
| ); |
| if term { |
| return (true, res); |
| } else if res.is_some() { |
| return (term, res); |
| } |
| } |
| } |
| (default_terminate, None) |
| } |
| |
| match targets.delegations() { |
| Some(d) => { |
| let mut visited = HashSet::new(); |
| lookup(self, false, 0, target_path, d, &[], &mut visited) |
| .1 |
| .ok_or_else(|| Error::TargetUnavailable) |
| } |
| None => Err(Error::TargetUnavailable), |
| } |
| } |
| |
| fn purge_metadata(&mut self) { |
| self.snapshot = None; |
| self.targets = None; |
| self.timestamp = None; |
| self.delegations.clear(); |
| } |
| |
| fn safe_root_ref(&self) -> Result<&RootMetadata> { |
| let root = self.root.as_ref(); |
| if root.expires() <= &Utc::now() { |
| return Err(Error::ExpiredMetadata(Role::Root)); |
| } |
| Ok(&root) |
| } |
| |
| fn safe_snapshot_ref(&self) -> Result<&SnapshotMetadata> { |
| match self.snapshot { |
| Some(ref snapshot) => { |
| let snapshot = snapshot.as_ref(); |
| if snapshot.expires() <= &Utc::now() { |
| return Err(Error::ExpiredMetadata(Role::Snapshot)); |
| } |
| Ok(snapshot) |
| } |
| None => Err(Error::MissingMetadata(Role::Snapshot)), |
| } |
| } |
| |
| fn safe_targets_ref(&self) -> Result<&TargetsMetadata> { |
| match self.targets { |
| Some(ref targets) => { |
| let targets = targets.as_ref(); |
| if targets.expires() <= &Utc::now() { |
| return Err(Error::ExpiredMetadata(Role::Targets)); |
| } |
| Ok(targets) |
| } |
| None => Err(Error::MissingMetadata(Role::Targets)), |
| } |
| } |
| fn safe_timestamp_ref(&self) -> Result<&TimestampMetadata> { |
| match self.timestamp { |
| Some(ref timestamp) => { |
| let timestamp = timestamp.as_ref(); |
| if timestamp.expires() <= &Utc::now() { |
| return Err(Error::ExpiredMetadata(Role::Timestamp)); |
| } |
| Ok(timestamp) |
| } |
| None => Err(Error::MissingMetadata(Role::Timestamp)), |
| } |
| } |
| } |
| |
| #[cfg(test)] |
| mod test { |
| use super::*; |
| use crate::crypto::{HashAlgorithm, PrivateKey, SignatureScheme}; |
| use crate::interchange::Json; |
| use crate::metadata::{ |
| RootMetadataBuilder, SnapshotMetadataBuilder, TargetsMetadataBuilder, |
| TimestampMetadataBuilder, |
| }; |
| use lazy_static::lazy_static; |
| |
| lazy_static! { |
| static ref KEYS: Vec<PrivateKey> = { |
| let keys: &[&[u8]] = &[ |
| include_bytes!("../tests/ed25519/ed25519-1.pk8.der"), |
| include_bytes!("../tests/ed25519/ed25519-2.pk8.der"), |
| include_bytes!("../tests/ed25519/ed25519-3.pk8.der"), |
| include_bytes!("../tests/ed25519/ed25519-4.pk8.der"), |
| include_bytes!("../tests/ed25519/ed25519-5.pk8.der"), |
| include_bytes!("../tests/ed25519/ed25519-6.pk8.der"), |
| ]; |
| keys.iter() |
| .map(|b| PrivateKey::from_pkcs8(b, SignatureScheme::Ed25519).unwrap()) |
| .collect() |
| }; |
| } |
| |
| #[test] |
| fn root_pinned_success() { |
| let root_key = &KEYS[0]; |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[0].public().clone()) |
| .targets_key(KEYS[0].public().clone()) |
| .timestamp_key(KEYS[0].public().clone()) |
| .signed::<Json>(&root_key) |
| .unwrap(); |
| |
| assert!(Tuf::from_root_pinned(root, &[root_key.key_id().clone()]).is_ok()); |
| } |
| |
| #[test] |
| fn root_pinned_failure() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[0].public().clone()) |
| .targets_key(KEYS[0].public().clone()) |
| .timestamp_key(KEYS[0].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| assert!(Tuf::from_root_pinned(root, &[KEYS[1].key_id().clone()]).is_err()); |
| } |
| |
| #[test] |
| fn good_root_rotation() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[0].public().clone()) |
| .targets_key(KEYS[0].public().clone()) |
| .timestamp_key(KEYS[0].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let mut root = RootMetadataBuilder::new() |
| .version(2) |
| .root_key(KEYS[1].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[1].public().clone()) |
| .timestamp_key(KEYS[1].public().clone()) |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| // add the original key's signature to make it cross signed |
| root.add_signature(&KEYS[0]).unwrap(); |
| |
| assert_eq!(tuf.update_root(root.clone()), Ok(true)); |
| |
| // second update should do nothing |
| assert_eq!(tuf.update_root(root), Ok(false)); |
| } |
| |
| #[test] |
| fn no_cross_sign_root_rotation() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[0].public().clone()) |
| .targets_key(KEYS[0].public().clone()) |
| .timestamp_key(KEYS[0].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[1].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[1].public().clone()) |
| .timestamp_key(KEYS[1].public().clone()) |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| assert!(tuf.update_root(root).is_err()); |
| } |
| |
| #[test] |
| fn good_timestamp_update() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[1].public().clone()) |
| .timestamp_key(KEYS[1].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new() |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| let timestamp = |
| TimestampMetadataBuilder::from_snapshot(&snapshot, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| assert_eq!(tuf.update_timestamp(timestamp.clone()), Ok(true)); |
| |
| // second update should do nothing |
| assert_eq!(tuf.update_timestamp(timestamp), Ok(false)) |
| } |
| |
| #[test] |
| fn bad_timestamp_update_wrong_key() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[1].public().clone()) |
| .timestamp_key(KEYS[1].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new() |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| let timestamp = |
| TimestampMetadataBuilder::from_snapshot(&snapshot, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| // sign it with the root key |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| assert!(tuf.update_timestamp(timestamp).is_err()) |
| } |
| |
| #[test] |
| fn good_snapshot_update() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[2].public().clone()) |
| .timestamp_key(KEYS[2].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new().signed(&KEYS[1]).unwrap(); |
| |
| let timestamp = |
| TimestampMetadataBuilder::from_snapshot(&snapshot, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[2]) |
| .unwrap(); |
| |
| tuf.update_timestamp(timestamp).unwrap(); |
| |
| assert_eq!(tuf.update_snapshot(snapshot.clone()), Ok(true)); |
| |
| // second update should do nothing |
| assert_eq!(tuf.update_snapshot(snapshot), Ok(false)); |
| } |
| |
| #[test] |
| fn bad_snapshot_update_wrong_key() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[2].public().clone()) |
| .timestamp_key(KEYS[2].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new() |
| .signed::<Json>(&KEYS[2]) |
| .unwrap(); |
| |
| let timestamp = |
| TimestampMetadataBuilder::from_snapshot(&snapshot, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| // sign it with the targets key |
| .signed::<Json>(&KEYS[2]) |
| .unwrap(); |
| |
| tuf.update_timestamp(timestamp).unwrap(); |
| |
| assert!(tuf.update_snapshot(snapshot).is_err()); |
| } |
| |
| #[test] |
| fn bad_snapshot_update_wrong_version() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[2].public().clone()) |
| .timestamp_key(KEYS[2].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new() |
| .version(2) |
| .signed::<Json>(&KEYS[2]) |
| .unwrap(); |
| |
| let timestamp = |
| TimestampMetadataBuilder::from_snapshot(&snapshot, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[2]) |
| .unwrap(); |
| |
| tuf.update_timestamp(timestamp).unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new() |
| .version(1) |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| assert!(tuf.update_snapshot(snapshot).is_err()); |
| } |
| |
| #[test] |
| fn good_targets_update() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[2].public().clone()) |
| .timestamp_key(KEYS[3].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let targets = TargetsMetadataBuilder::new() |
| .signed::<Json>(&KEYS[2]) |
| .unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new() |
| .insert_metadata(&targets, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| let timestamp = |
| TimestampMetadataBuilder::from_snapshot(&snapshot, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[3]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| tuf.update_timestamp(timestamp).unwrap(); |
| tuf.update_snapshot(snapshot).unwrap(); |
| |
| assert_eq!(tuf.update_targets(targets.clone()), Ok(true)); |
| |
| // second update should do nothing |
| assert_eq!(tuf.update_targets(targets), Ok(false)); |
| } |
| |
| #[test] |
| fn bad_targets_update_wrong_key() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[2].public().clone()) |
| .timestamp_key(KEYS[3].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let targets = TargetsMetadataBuilder::new() |
| // sign it with the timestamp key |
| .signed::<Json>(&KEYS[3]) |
| .unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new() |
| .insert_metadata(&targets, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| let timestamp = |
| TimestampMetadataBuilder::from_snapshot(&snapshot, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[3]) |
| .unwrap(); |
| |
| tuf.update_timestamp(timestamp).unwrap(); |
| tuf.update_snapshot(snapshot).unwrap(); |
| |
| assert!(tuf.update_targets(targets).is_err()); |
| } |
| |
| #[test] |
| fn bad_targets_update_wrong_version() { |
| let root = RootMetadataBuilder::new() |
| .root_key(KEYS[0].public().clone()) |
| .snapshot_key(KEYS[1].public().clone()) |
| .targets_key(KEYS[2].public().clone()) |
| .timestamp_key(KEYS[3].public().clone()) |
| .signed::<Json>(&KEYS[0]) |
| .unwrap(); |
| |
| let mut tuf = Tuf::from_root(root).unwrap(); |
| |
| let targets = TargetsMetadataBuilder::new() |
| .version(2) |
| .signed::<Json>(&KEYS[2]) |
| .unwrap(); |
| |
| let snapshot = SnapshotMetadataBuilder::new() |
| .insert_metadata(&targets, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[1]) |
| .unwrap(); |
| |
| let timestamp = |
| TimestampMetadataBuilder::from_snapshot(&snapshot, &[HashAlgorithm::Sha256]) |
| .unwrap() |
| .signed::<Json>(&KEYS[3]) |
| .unwrap(); |
| |
| tuf.update_timestamp(timestamp).unwrap(); |
| tuf.update_snapshot(snapshot).unwrap(); |
| |
| let targets = TargetsMetadataBuilder::new() |
| .version(1) |
| .signed::<Json>(&KEYS[2]) |
| .unwrap(); |
| |
| assert!(tuf.update_targets(targets).is_err()); |
| } |
| } |
