core_crypto/mls/
ciphersuite.rs

1use openmls_traits::types::{Ciphersuite, HashType};
2use wire_e2e_identity::prelude::HashAlgorithm;
3
4use super::{Error, Result};
5use crate::CiphersuiteName;
6
7#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash, derive_more::Deref, serde::Serialize, serde::Deserialize)]
8#[serde(transparent)]
9#[repr(transparent)]
10/// A wrapper for the OpenMLS Ciphersuite, so that we are able to provide a default value.
11pub struct MlsCiphersuite(pub(crate) Ciphersuite);
12
13impl MlsCiphersuite {
14    pub(crate) fn e2ei_hash_alg(&self) -> HashAlgorithm {
15        match self.0.hash_algorithm() {
16            HashType::Sha2_256 => HashAlgorithm::SHA256,
17            HashType::Sha2_384 => HashAlgorithm::SHA384,
18            HashType::Sha2_512 => HashAlgorithm::SHA512,
19        }
20    }
21}
22
23impl Default for MlsCiphersuite {
24    fn default() -> Self {
25        Self(Ciphersuite::MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519)
26    }
27}
28
29impl From<Ciphersuite> for MlsCiphersuite {
30    fn from(value: Ciphersuite) -> Self {
31        Self(value)
32    }
33}
34
35impl From<MlsCiphersuite> for Ciphersuite {
36    fn from(ciphersuite: MlsCiphersuite) -> Self {
37        ciphersuite.0
38    }
39}
40
41impl From<MlsCiphersuite> for u16 {
42    fn from(cs: MlsCiphersuite) -> Self {
43        (&cs.0).into()
44    }
45}
46
47impl TryFrom<u16> for MlsCiphersuite {
48    type Error = Error;
49
50    fn try_from(c: u16) -> Result<Self> {
51        Ok(CiphersuiteName::try_from(c)
52            .map_err(|_| Error::UnknownCiphersuite)?
53            .into())
54    }
55}
core_crypto/mls/ciphersuite.rs

core_crypto/mls/
ciphersuite.rs
