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feat: Add support for ACE OSCORE security parameters in cnf #11

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15 changes: 14 additions & 1 deletion src/common/cbor_values/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@
use core::fmt::{Debug, Display, Formatter};
use core::ops::Deref;

use coset::{CoseEncrypt0, CoseKey};
use coset::{CoseEncrypt0, CoseKey, OscoreInputMaterial};
use strum_macros::IntoStaticStr;

#[cfg(not(feature = "std"))]
Expand Down Expand Up @@ -91,6 +91,10 @@ pub enum ProofOfPossessionKey {
///
/// For details, see [section 3.4 of RFC 8747](https://datatracker.ietf.org/doc/html/rfc8747#section-3.4).
KeyId(KeyId),

/// OSCORE input material that is used in the ACE OSCORE profile (RFC 9203), in which
/// parameters for OSCORE communication are established.
OscoreInputMaterial(OscoreInputMaterial),
}

impl ProofOfPossessionKey {
Expand All @@ -117,6 +121,7 @@ impl ProofOfPossessionKey {
&k.protected.header.key_id
}
}
ProofOfPossessionKey::OscoreInputMaterial(_) => todo!(),
}
}
}
Expand Down Expand Up @@ -212,6 +217,7 @@ mod conversion {
let x: i128 = 3;
vec![(x, Some(Box::new(Value::Bytes(kid.clone()))))]
}
Self::OscoreInputMaterial(_) => todo!(),
}
}

Expand Down Expand Up @@ -240,6 +246,13 @@ mod conversion {
))
}),
(3, Value::Bytes(x)) => Ok(ProofOfPossessionKey::KeyId(x)),
(4, m @ Value::Map(_)) => OscoreInputMaterial::from_cbor_value(m)
.map(ProofOfPossessionKey::OscoreInputMaterial)
.map_err(|x| {
TryFromCborMapError::from_message(format!(
"couldn't create OscoreInputMaterial from CBOR value: {x}"
))
}),
(x, _) => Err(TryFromCborMapError::unknown_field(u8::try_from(x)?)),
}
} else {
Expand Down