openmls/schedule/
application_export_tree.rs

1use openmls_traits::{crypto::OpenMlsCrypto, types::Ciphersuite};
2
3use crate::{
4    binary_tree::array_representation::TreeSize,
5    ciphersuite::Secret,
6    component::ComponentId,
7    schedule::{
8        pprf::{Pprf, PprfError, Prefix16},
9        ApplicationExportSecret,
10    },
11};
12
13pub(crate) type ApplicationExportTree = Pprf<Prefix16>;
14
15/// Error constructing component secret from the exporter tree
16/// See [`PprfError`] for more details.
17pub type ApplicationExportTreeError = PprfError;
18
19impl ApplicationExportTree {
20    pub(crate) fn new(application_exporter: ApplicationExportSecret) -> Self {
21        let size = TreeSize::from_leaf_count(u16::MAX as u32);
22        Pprf::new_with_size(application_exporter.secret, size)
23    }
24
25    pub(crate) fn safe_export_secret(
26        &mut self,
27        crypto: &impl OpenMlsCrypto,
28        ciphersuite: Ciphersuite,
29        component_id: ComponentId,
30    ) -> Result<Secret, ApplicationExportTreeError> {
31        self.evaluate(crypto, ciphersuite, &component_id)
32    }
33}

openmls/schedule/application_export_tree.rs

openmls/schedule/
application_export_tree.rs