[Add] Ease of use functions

Cargo.lock

@@ -999,6 +999,7 @@ dependencies = [
  "mtp-crypto",
  "mtp-transport",
  "rand 0.8.6",
+ "tokio",
 ]
 
 [[package]]
@@ -1049,6 +1050,7 @@ dependencies = [
  "mtp-crypto",
  "mtp-transport",
  "rand 0.8.6",
+ "tokio",
 ]
 
 [[package]]

client/Cargo.toml

@@ -9,6 +9,7 @@ mtp-codec = { path = "../codec" }
 mtp-transport = { path = "../transport" }
 mtp-crypto = { path = "../crypto", optional = true }
 rand = "0.8"
+tokio = { version = "1", features = ["time"] }
 
 [features]
 crypto = ["dep:mtp-crypto", "mtp-codec/crypto"]

client/src/lib.rs

@@ -1,6 +1,7 @@
 use mtp_codec::{CommunicationValue, DataType, DataValue, PROTOCOL_VERSION, Version};
 use mtp_common::CommunicationError;
 use mtp_transport::{Policy, Receiver, Sender};
+use tokio::time::Duration;
 
 #[cfg(feature = "crypto")]
 fn unexpected_response_type_error(
@@ -20,6 +21,8 @@ pub struct ClientConfig {
     pub url: String,
     pub tls: ClientTlsConfig,
     pub client_id: u64,
+    #[cfg(feature = "crypto")]
+    pub auth_timeout: Duration,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -34,6 +37,8 @@ impl ClientConfig {
             url: url.into(),
             tls: ClientTlsConfig::SystemRoots,
             client_id: 0,
+            #[cfg(feature = "crypto")]
+            auth_timeout: Duration::from_secs(30),
         }
     }
 
@@ -51,6 +56,12 @@ impl ClientConfig {
         self
     }
 
+    #[cfg(feature = "crypto")]
+    pub fn with_auth_timeout(mut self, timeout: Duration) -> Self {
+        self.auth_timeout = timeout;
+        self
+    }
+
     fn server_cert(&self) -> Option<Vec<u8>> {
         match &self.tls {
             ClientTlsConfig::SystemRoots => None,
@@ -73,6 +84,7 @@ pub struct MTPConnection {
 #[cfg(feature = "crypto")]
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum AuthState {
+    Unauthenticated,
     Pending,
     Authenticated,
     Failed,
@@ -91,7 +103,6 @@ impl MTPClient {
         let (sender, receiver) =
             mtp_transport::connect(&config.url, config.server_cert(), Policy::default()).await?;
 
-        // Build the initial identification message with the protocol version.
         let version_str = format!("{}", PROTOCOL_VERSION);
         let ident = CommunicationValue::new(mtp_codec::CommunicationType::Identification)
             .add_typed_default(DataType::Version, DataValue::Str(version_str))
@@ -107,7 +118,7 @@ impl MTPClient {
             sender,
             receiver,
             #[cfg(feature = "crypto")]
-            auth_state: AuthState::Authenticated,
+            auth_state: AuthState::Unauthenticated,
             #[cfg(feature = "crypto")]
             client_id: config.client_id,
         })
@@ -126,14 +137,13 @@ impl MTPClient {
 #[cfg(feature = "crypto")]
 fn verify_host_challenge(
     challenge: &CommunicationValue,
-    tm: &mtp_codec::TypeMap,
     host_pk: &mtp_crypto::PublicKeyBundle,
     id: u64,
     server_challenge: u128,
 ) -> Result<(), CommunicationError> {
     use mtp_crypto::{auth, verify_ed25519, verify_ml_dsa};
 
-    let sig = match challenge.get_data(DataType::Signature.to_id(tm)) {
+    let sig = match challenge.get_data(DataType::Signature) {
         DataValue::Bytes(b) => b.clone(),
         _ => {
             return Err(CommunicationError::AuthenticationFailed(
@@ -141,7 +151,7 @@ fn verify_host_challenge(
             ));
         }
     };
-    let pq_sig = match challenge.get_data(DataType::PqSignature.to_id(tm)) {
+    let pq_sig = match challenge.get_data(DataType::PqSignature) {
         DataValue::Bytes(b) => b.clone(),
         _ => vec![],
     };
@@ -165,7 +175,6 @@ fn verify_host_challenge(
 #[cfg(feature = "crypto")]
 fn verify_host_final(
     response: &CommunicationValue,
-    tm: &mtp_codec::TypeMap,
     host_pk: &mtp_crypto::PublicKeyBundle,
     id: u64,
     client_nonce: u128,
@@ -173,7 +182,7 @@ fn verify_host_final(
 ) -> Result<(), CommunicationError> {
     use mtp_crypto::{auth, verify_ed25519, verify_ml_dsa};
 
-    match response.get_data(DataType::ClientNonce.to_id(tm)) {
+    match response.get_data(DataType::ClientNonce) {
         DataValue::UnsignedNumber(n) if *n == client_nonce => {}
         _ => {
             return Err(CommunicationError::AuthenticationFailed(
@@ -182,7 +191,7 @@ fn verify_host_final(
         }
     }
 
-    let sig = match response.get_data(DataType::Signature.to_id(tm)) {
+    let sig = match response.get_data(DataType::Signature) {
         DataValue::Bytes(b) => b.clone(),
         _ => {
             return Err(CommunicationError::AuthenticationFailed(
@@ -190,7 +199,7 @@ fn verify_host_final(
             ));
         }
     };
-    let pq_sig = match response.get_data(DataType::PqSignature.to_id(tm)) {
+    let pq_sig = match response.get_data(DataType::PqSignature) {
         DataValue::Bytes(b) => b.clone(),
         _ => vec![],
     };
@@ -210,10 +219,9 @@ fn verify_host_final(
 #[cfg(feature = "crypto")]
 fn check_connected(
     response: &CommunicationValue,
-    tm: &mtp_codec::TypeMap,
     reject_msg: &str,
 ) -> Result<(), CommunicationError> {
-    match response.get_data(DataType::Connected.to_id(tm)) {
+    match response.get_data(DataType::Connected) {
         DataValue::BoolTrue => Ok(()),
         DataValue::BoolFalse => Err(CommunicationError::AuthenticationFailed(reject_msg.into())),
         _ => Err(CommunicationError::AuthenticationFailed(
@@ -271,7 +279,7 @@ async fn receive_verified_challenge(
         ));
     }
 
-    let server_challenge = match challenge.get_data(DataType::ServerNonce.to_id(tm)) {
+    let server_challenge = match challenge.get_data(DataType::ServerNonce) {
         DataValue::UnsignedNumber(n) => *n,
         _ => {
             return Err(CommunicationError::AuthenticationFailed(
@@ -280,13 +288,7 @@ async fn receive_verified_challenge(
         }
     };
 
-    verify_host_challenge(
+    verify_host_challenge(&challenge, host_public_key_bundle, bound_id, server_challenge)?;
-        &challenge,
-        tm,
-        host_public_key_bundle,
-        bound_id,
-        server_challenge,
-    )?;
 
     Ok(server_challenge)
 }
@@ -297,6 +299,25 @@ impl MTPClient {
         config: ClientConfig,
         keys: &mtp_crypto::Keyring,
         host_public_key_bundle: &mtp_crypto::PublicKeyBundle,
+    ) -> Result<MTPConnection, CommunicationError> {
+        let timeout = config.auth_timeout;
+        match tokio::time::timeout(
+            timeout,
+            Self::auth_connect_inner(config, keys, host_public_key_bundle),
+        )
+        .await
+        {
+            Ok(result) => result,
+            Err(_) => Err(CommunicationError::AuthenticationFailed(
+                "authentication timed out".into(),
+            )),
+        }
+    }
+
+    async fn auth_connect_inner(
+        config: ClientConfig,
+        keys: &mtp_crypto::Keyring,
+        host_public_key_bundle: &mtp_crypto::PublicKeyBundle,
     ) -> Result<MTPConnection, CommunicationError> {
         use mtp_crypto::auth;
 
@@ -313,17 +334,27 @@ impl MTPClient {
                 DataType::Id,
                 DataValue::UnsignedNumber(config.client_id as u128),
             );
-        sender.send(&ident).await?;
+        if let Err(e) = sender.send(&ident).await {
+            sender.close();
+            return Err(e);
+        }
 
         // 2. Receive and verify the host's challenge.
-        let server_challenge = receive_verified_challenge(
+        let server_challenge = match receive_verified_challenge(
             &receiver,
             &tm,
             host_public_key_bundle,
             config.client_id,
             "auth_connect challenge",
         )
-        .await?;
+        .await
+        {
+            Ok(c) => c,
+            Err(e) => {
+                sender.close();
+                return Err(e);
+            }
+        };
 
         // 3. Sign the host's challenge and send the proof.
         let client_nonce: u128 = rand::random();
@@ -334,28 +365,49 @@ impl MTPClient {
             client_nonce,
         );
 
-        let proof = signed_challenge_response(keys, &proof_payload, client_nonce)?;
+        let proof = match signed_challenge_response(keys, &proof_payload, client_nonce) {
-        sender.send(&proof).await?;
+            Ok(p) => p,
+            Err(e) => {
+                sender.close();
+                return Err(e);
+            }
+        };
+        if let Err(e) = sender.send(&proof).await {
+            sender.close();
+            return Err(e);
+        }
 
         // 4. Receive and verify the host's final confirmation.
-        let response = receiver.receive().await?;
+        let response = match receiver.receive().await {
+            Ok(r) => r,
+            Err(e) => {
+                sender.close();
+                return Err(e);
+            }
+        };
         let expected_type = mtp_codec::CommunicationType::IdentificationResponse.to_id(&tm);
         if response.get_type() != expected_type {
+            sender.close();
             return Err(unexpected_response_type_error(
                 "auth_connect",
                 expected_type,
                 &response,
             ));
         }
-        check_connected(&response, &tm, "Server rejected authentication")?;
+        if let Err(e) = check_connected(&response, "Server rejected authentication") {
-        verify_host_final(
+            sender.close();
+            return Err(e);
+        }
+        if let Err(e) = verify_host_final(
             &response,
-            &tm,
             host_public_key_bundle,
             config.client_id,
             client_nonce,
             server_challenge,
-        )?;
+        ) {
+            sender.close();
+            return Err(e);
+        }
 
         Ok(MTPConnection {
             version: PROTOCOL_VERSION,
@@ -370,6 +422,25 @@ impl MTPClient {
         config: ClientConfig,
         keys: &mtp_crypto::Keyring,
         host_public_key_bundle: &mtp_crypto::PublicKeyBundle,
+    ) -> Result<MTPConnection, CommunicationError> {
+        let timeout = config.auth_timeout;
+        match tokio::time::timeout(
+            timeout,
+            Self::auth_register_inner(config, keys, host_public_key_bundle),
+        )
+        .await
+        {
+            Ok(result) => result,
+            Err(_) => Err(CommunicationError::AuthenticationFailed(
+                "authentication timed out".into(),
+            )),
+        }
+    }
+
+    async fn auth_register_inner(
+        config: ClientConfig,
+        keys: &mtp_crypto::Keyring,
+        host_public_key_bundle: &mtp_crypto::PublicKeyBundle,
     ) -> Result<MTPConnection, CommunicationError> {
         use mtp_crypto::auth;
 
@@ -385,54 +456,86 @@ impl MTPClient {
         let register = CommunicationValue::new(mtp_codec::CommunicationType::Register)
             .add_typed_default(DataType::Version, DataValue::Str(version_str.clone()))
             .add_typed_default(DataType::PublicKeys, DataValue::Bytes(pk_bytes.clone()));
-        sender.send(&register).await?;
+        if let Err(e) = sender.send(&register).await {
+            sender.close();
+            return Err(e);
+        }
 
         // 2. Receive and verify the host's challenge (register binds id = 0).
-        let server_challenge = receive_verified_challenge(
+        let server_challenge = match receive_verified_challenge(
             &receiver,
             &tm,
             host_public_key_bundle,
             0,
             "auth_register challenge",
         )
-        .await?;
+        .await
+        {
+            Ok(c) => c,
+            Err(e) => {
+                sender.close();
+                return Err(e);
+            }
+        };
 
         // 3. Sign the host's challenge over the bundle and send the proof.
         let client_nonce: u128 = rand::random();
         let proof_payload =
             auth::register_proof_payload(&version_str, &pk_bytes, server_challenge, client_nonce);
 
-        let proof = signed_challenge_response(keys, &proof_payload, client_nonce)?;
+        let proof = match signed_challenge_response(keys, &proof_payload, client_nonce) {
-        sender.send(&proof).await?;
+            Ok(p) => p,
+            Err(e) => {
+                sender.close();
+                return Err(e);
+            }
+        };
+        if let Err(e) = sender.send(&proof).await {
+            sender.close();
+            return Err(e);
+        }
 
         // 4. Receive the host's final confirmation; extract the assigned id and
         //    verify the host signature binds to it.
-        let response = receiver.receive().await?;
+        let response = match receiver.receive().await {
+            Ok(r) => r,
+            Err(e) => {
+                sender.close();
+                return Err(e);
+            }
+        };
         let expected_type = mtp_codec::CommunicationType::RegisterResponse.to_id(&tm);
         if response.get_type() != expected_type {
+            sender.close();
             return Err(unexpected_response_type_error(
                 "auth_register",
                 expected_type,
                 &response,
             ));
         }
-        check_connected(&response, &tm, "Server rejected registration")?;
+        if let Err(e) = check_connected(&response, "Server rejected registration") {
-        let assigned_id = match response.get_data(DataType::Id.to_id(&tm)) {
+            sender.close();
+            return Err(e);
+        }
+        let assigned_id = match response.get_data(DataType::Id) {
             DataValue::UnsignedNumber(n) => *n as u64,
             _ => {
+                sender.close();
                 return Err(CommunicationError::AuthenticationFailed(
                     "Missing assigned ID".into(),
                 ));
             }
         };
-        verify_host_final(
+        if let Err(e) = verify_host_final(
             &response,
-            &tm,
             host_public_key_bundle,
             assigned_id,
             client_nonce,
             server_challenge,
-        )?;
+        ) {
+            sender.close();
+            return Err(e);
+        }
 
         Ok(MTPConnection {
             version: PROTOCOL_VERSION,
@@ -470,8 +573,23 @@ mod tests {
 
     #[cfg(feature = "crypto")]
     #[test]
-    fn test_auth_state_derive() {
+    fn test_auth_state_unauthenticated_is_not_authenticated() {
-        assert_eq!(AuthState::Pending, AuthState::Pending);
+        assert_ne!(AuthState::Unauthenticated, AuthState::Authenticated);
-        assert_ne!(AuthState::Authenticated, AuthState::Failed);
+        assert_ne!(AuthState::Pending, AuthState::Authenticated);
+    }
+
+    #[cfg(feature = "crypto")]
+    #[test]
+    fn test_auth_timeout_default() {
+        let config = ClientConfig::new("https://localhost:4433");
+        assert_eq!(config.auth_timeout, Duration::from_secs(30));
+    }
+
+    #[cfg(feature = "crypto")]
+    #[test]
+    fn test_auth_timeout_custom() {
+        let config = ClientConfig::new("https://localhost:4433")
+            .with_auth_timeout(Duration::from_secs(10));
+        assert_eq!(config.auth_timeout, Duration::from_secs(10));
     }
 }

codec/src/communication_value.rs

@@ -3,7 +3,7 @@ use std::collections::BTreeMap;
 use std::fmt;
 use std::io::{Cursor, Read};
 
-use crate::data_value::DataValue;
+use crate::data_value::{DataKind, DataValue};
 use crate::rand_u32;
 use mtp_common::CodecError;
 use mtp_type_map::{
@@ -12,9 +12,7 @@ use mtp_type_map::{
 };
 
 #[cfg(feature = "crypto")]
-use mtp_crypto::SigAlgorithm;
+use mtp_crypto::{PublicKeyBundle, SigAlgorithm, SignatureScheme};
-#[cfg(feature = "crypto")]
-use mtp_crypto::SignatureScheme;
 
 const FLAG_HAS_SENDER: u8 = 0b0000_0001;
 const FLAG_HAS_RECEIVER: u8 = 0b0000_0010;
@@ -121,13 +119,147 @@ impl CommunicationValue {
         self
     }
 
-    pub fn get_data(&self, data_type: DataTypeId) -> &DataValue {
+    pub fn get_data(&self, data_type: DataType) -> &DataValue {
-        self.data.get(&data_type).unwrap_or(&DataValue::Null)
+        let tm_owned;
+        let tm = match &self.type_map {
+            Some(tm) => tm,
+            None => {
+                tm_owned = TypeMap::latest();
+                &tm_owned
+            }
+        };
+        match tm.data_id_enum(data_type) {
+            Some(raw_id) => self.data.get(&DataTypeId(raw_id)).unwrap_or(&DataValue::Null),
+            None => &DataValue::Null,
+        }
+    }
+
+    pub fn get_data_opt(&self, data_type: DataType) -> Option<&DataValue> {
+        let tm_owned;
+        let tm = match &self.type_map {
+            Some(tm) => tm,
+            None => {
+                tm_owned = TypeMap::latest();
+                &tm_owned
+            }
+        };
+        let raw_id = tm.data_id_enum(data_type)?;
+        self.data.get(&DataTypeId(raw_id))
+    }
+
+    pub fn has_data(&self, data_type: DataType) -> Option<DataKind> {
+        self.get_data_opt(data_type).map(|v| v.kind())
+    }
+
+    pub fn get_comm_type_enum(&self) -> Option<CommunicationType> {
+        let tm_owned;
+        let tm = match &self.type_map {
+            Some(tm) => tm,
+            None => {
+                tm_owned = TypeMap::latest();
+                &tm_owned
+            }
+        };
+        tm.comm_enum_id(self.comm_type.0)
     }
 
     pub fn data(&self) -> &BTreeMap<DataTypeId, DataValue> {
         &self.data
     }
+
+    pub fn data_len(&self) -> usize {
+        self.data.len()
+    }
+
+    // ── type checks ──────────────────────────────────────────────────────────
+
+    pub fn is_type(&self, comm_type: CommunicationType) -> bool {
+        self.get_comm_type_enum() == Some(comm_type)
+    }
+
+    pub fn get_type_name(&self) -> Option<&'static str> {
+        communication_type_name(self.comm_type.0)
+    }
+
+    // ── mutation ─────────────────────────────────────────────────────────────
+
+    pub fn set_data(&mut self, data_type: DataType, value: DataValue) {
+        let tm = self.type_map.clone().unwrap_or_else(TypeMap::latest);
+        if let Some(raw_id) = tm.data_id_enum(data_type) {
+            self.data.insert(DataTypeId(raw_id), value);
+        }
+    }
+
+    #[must_use]
+    pub fn with_data(mut self, data_type: DataType, value: DataValue) -> Self {
+        self.set_data(data_type, value);
+        self
+    }
+
+    pub fn remove_data(&mut self, data_type: DataType) -> Option<DataValue> {
+        let tm_owned;
+        let tm = match &self.type_map {
+            Some(tm) => tm,
+            None => {
+                tm_owned = TypeMap::latest();
+                &tm_owned
+            }
+        };
+        let raw_id = tm.data_id_enum(data_type)?;
+        self.data.remove(&DataTypeId(raw_id))
+    }
+
+    #[must_use]
+    pub fn reply_to(&self, comm_type: CommunicationType) -> Self {
+        Self::new(comm_type)
+            .with_sender(self.receiver)
+            .with_receiver(self.sender)
+    }
+
+    pub fn merge(&mut self, other: &CommunicationValue) {
+        for (id, value) in &other.data {
+            self.data.insert(*id, value.clone());
+        }
+    }
+
+    // ── typed iteration ──────────────────────────────────────────────────────
+
+    pub fn iter_typed_data(&self) -> impl Iterator<Item = (Option<DataType>, &DataValue)> + '_ {
+        let tm = self.type_map.clone().unwrap_or_else(TypeMap::latest);
+        self.data
+            .iter()
+            .map(move |(id, val)| (tm.data_enum_id(id.0), val))
+    }
+
+    // ── typed field accessors ─────────────────────────────────────────────────
+
+    pub fn get_bool(&self, data_type: DataType) -> Option<bool> {
+        self.get_data_opt(data_type)?.as_bool()
+    }
+
+    pub fn get_str(&self, data_type: DataType) -> Option<&str> {
+        self.get_data_opt(data_type)?.as_str()
+    }
+
+    pub fn get_u128(&self, data_type: DataType) -> Option<u128> {
+        self.get_data_opt(data_type)?.as_unsigned_number()
+    }
+
+    pub fn get_i128(&self, data_type: DataType) -> Option<i128> {
+        self.get_data_opt(data_type)?.as_signed_number()
+    }
+
+    pub fn get_float(&self, data_type: DataType) -> Option<(u8, u32)> {
+        self.get_data_opt(data_type)?.as_float()
+    }
+
+    pub fn get_bytes(&self, data_type: DataType) -> Option<&[u8]> {
+        self.get_data_opt(data_type)?.as_bytes_slice()
+    }
+
+    pub fn get_array(&self, data_type: DataType) -> Option<&[DataValue]> {
+        self.get_data_opt(data_type)?.as_array_slice()
+    }
 }
 
 impl CommunicationValue {
@@ -433,6 +565,64 @@ impl CommunicationValue {
         self.frame_signature.as_ref()
     }
 
+    /*
+     * Verify the frame signature using a `PublicKeyBundle`. Dispatches to
+     * Ed25519, ML-DSA-65, or both (DUAL) based on the stored algorithm byte.
+     * Returns `false` if the frame has no signature or verification fails.
+     */
+    #[cfg(feature = "crypto")]
+    pub fn validate_signature(&self, pk: &PublicKeyBundle) -> bool {
+        let Some((alg, _)) = &self.frame_signature else {
+            return false;
+        };
+        struct Ed25519Verifier<'a>(&'a mtp_crypto::SignaturePublicKey);
+        impl SignatureScheme for Ed25519Verifier<'_> {
+            fn sign(&self, _: &[u8]) -> Result<Vec<u8>, mtp_crypto::CryptoError> {
+                Err(mtp_crypto::CryptoError::SigningFailed)
+            }
+            fn verify(&self, msg: &[u8], sig: &[u8]) -> Result<(), mtp_crypto::CryptoError> {
+                mtp_crypto::verify_ed25519(self.0, msg, sig)
+            }
+        }
+        struct MlDsaVerifier<'a>(&'a mtp_crypto::SignaturePqPublicKey);
+        impl SignatureScheme for MlDsaVerifier<'_> {
+            fn sign(&self, _: &[u8]) -> Result<Vec<u8>, mtp_crypto::CryptoError> {
+                Err(mtp_crypto::CryptoError::SigningFailed)
+            }
+            fn verify(&self, msg: &[u8], sig: &[u8]) -> Result<(), mtp_crypto::CryptoError> {
+                mtp_crypto::verify_ml_dsa(self.0, msg, sig)
+            }
+        }
+        match *alg {
+            SigAlgorithm::ED25519 => {
+                self.verify_frame(&Ed25519Verifier(&pk.sig_cl_public_key)).is_ok()
+            }
+            SigAlgorithm::ML_DSA_65 => {
+                self.verify_frame(&MlDsaVerifier(&pk.sig_pq_public_key)).is_ok()
+            }
+            SigAlgorithm::DUAL => {
+                // For DUAL, verify_frame passes the full combined sig to the verifier.
+                // We wrap a verifier that splits and checks both halves.
+                struct DualVerifier<'a>(&'a mtp_crypto::SignaturePublicKey, &'a mtp_crypto::SignaturePqPublicKey);
+                impl SignatureScheme for DualVerifier<'_> {
+                    fn sign(&self, _: &[u8]) -> Result<Vec<u8>, mtp_crypto::CryptoError> {
+                        Err(mtp_crypto::CryptoError::SigningFailed)
+                    }
+                    fn verify(&self, msg: &[u8], sig: &[u8]) -> Result<(), mtp_crypto::CryptoError> {
+                        const ED_LEN: usize = 64;
+                        if sig.len() < ED_LEN {
+                            return Err(mtp_crypto::CryptoError::InvalidSignature);
+                        }
+                        mtp_crypto::verify_ed25519(self.0, msg, &sig[..ED_LEN])?;
+                        mtp_crypto::verify_ml_dsa(self.1, msg, &sig[ED_LEN..])
+                    }
+                }
+                self.verify_frame(&DualVerifier(&pk.sig_cl_public_key, &pk.sig_pq_public_key)).is_ok()
+            }
+            _ => false,
+        }
+    }
+
     #[cfg(feature = "registry")]
     pub fn migrate(&self, target_tm: &TypeMap) -> Result<Self, CodecError> {
         let comm_name = communication_type_name(self.comm_type.0)
@@ -544,15 +734,23 @@ impl fmt::Display for CommunicationValue {
             write!(f, ", R:{}{:X}{}", ORANGE, self.receiver, RESET)?;
         }
 
-        let name = communication_type_name(self.comm_type.0).unwrap_or("?");
+        let name = self
+            .get_comm_type_enum()
+            .map(|t| t.name())
+            .unwrap_or_else(|| communication_type_name(self.comm_type.0).unwrap_or("?"));
         write!(f, ", {}: ", name)?;
 
+        let tm = self.type_map.clone().unwrap_or_else(TypeMap::latest);
         write!(f, "{{")?;
-        for (i, (key, value)) in self.data.iter().enumerate() {
+        for (i, (raw_id, value)) in self.data.iter().enumerate() {
             if i > 0 {
                 write!(f, ", ")?;
             }
-            let dname = data_type_name(key.0).unwrap_or("?");
+            let dname = tm
+                .data_enum_id(raw_id.0)
+                .map(|t| t.name())
+                .or_else(|| data_type_name(raw_id.0))
+                .unwrap_or("?");
             write!(f, "{}: ", dname)?;
             fmt_data_value(value, f)?;
         }
@@ -645,11 +843,11 @@ mod tests {
         assert_eq!(decoded.get_receiver(), 222);
         assert_eq!(decoded.get_type(), CommunicationType::Disconnect.to_id(&tm));
         assert_eq!(
-            decoded.get_data(DataType::Id.to_id(&tm)),
+            decoded.get_data(DataType::Id),
             &DataValue::Str("alice".to_string())
         );
         assert_eq!(
-            decoded.get_data(DataType::ClientNonce.to_id(&tm)),
+            decoded.get_data(DataType::ClientNonce),
             &DataValue::SignedNumber(42)
         );
     }

codec/src/data_value.rs

@@ -39,6 +39,28 @@ pub enum DataKind {
     Null,
 }
 
+impl fmt::Display for DataKind {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            DataKind::Bool => f.write_str("Bool"),
+            DataKind::SignedNumber => f.write_str("SignedNumber"),
+            DataKind::UnsignedNumber => f.write_str("UnsignedNumber"),
+            DataKind::Float => f.write_str("Float"),
+            DataKind::Str => f.write_str("Str"),
+            DataKind::Bytes => f.write_str("Bytes"),
+            DataKind::Array(inner) => write!(f, "Array<{}>", inner),
+            DataKind::Container => f.write_str("Container"),
+            #[cfg(feature = "crypto")]
+            DataKind::EncryptedContainer => f.write_str("EncryptedContainer"),
+            #[cfg(feature = "crypto")]
+            DataKind::SignedContainer => f.write_str("SignedContainer"),
+            #[cfg(feature = "crypto")]
+            DataKind::SignedEncryptedContainer => f.write_str("SignedEncryptedContainer"),
+            DataKind::Null => f.write_str("Null"),
+        }
+    }
+}
+
 #[derive(Debug, Clone, Eq)]
 pub enum DataValue {
     BoolTrue,
@@ -259,6 +281,77 @@ impl DataValue {
         }
     }
 
+    pub fn as_number(&self) -> Option<i128> {
+        match self {
+            DataValue::SignedNumber(n) => Some(*n),
+            DataValue::UnsignedNumber(n) => Some(*n as i128),
+            _ => None,
+        }
+    }
+
+    pub fn is_null(&self) -> bool {
+        matches!(self, DataValue::Null)
+    }
+
+    pub fn is_truthy(&self) -> bool {
+        match self {
+            DataValue::BoolTrue | DataValue::Bool(true) => true,
+            DataValue::BoolFalse | DataValue::Bool(false) | DataValue::Null => false,
+            DataValue::UnsignedNumber(0) | DataValue::SignedNumber(0) => false,
+            _ => true,
+        }
+    }
+
+    pub fn get_field(&self, key: DataTypeId) -> Option<&DataValue> {
+        match self {
+            DataValue::Container(entries) => {
+                entries.iter().find(|(k, _)| *k == key).map(|(_, v)| v)
+            }
+            _ => None,
+        }
+    }
+
+    pub fn as_container_map(&self) -> Option<BTreeMap<DataTypeId, DataValue>> {
+        match self {
+            DataValue::Container(entries) => Some(entries.iter().cloned().collect()),
+            _ => None,
+        }
+    }
+
+    pub fn as_bytes_slice(&self) -> Option<&[u8]> {
+        match self {
+            DataValue::Bytes(b) => Some(b),
+            _ => None,
+        }
+    }
+
+    pub fn as_array_slice(&self) -> Option<&[DataValue]> {
+        match self {
+            DataValue::Array(a) => Some(a),
+            _ => None,
+        }
+    }
+
+    pub fn type_name(&self) -> &'static str {
+        match self {
+            DataValue::Bool(_) | DataValue::BoolTrue | DataValue::BoolFalse => "Bool",
+            DataValue::SignedNumber(_) => "SignedNumber",
+            DataValue::UnsignedNumber(_) => "UnsignedNumber",
+            DataValue::Float(_, _) => "Float",
+            DataValue::Str(_) => "Str",
+            DataValue::Bytes(_) => "Bytes",
+            DataValue::Array(_) => "Array",
+            DataValue::Container(_) => "Container",
+            #[cfg(feature = "crypto")]
+            DataValue::EncryptedContainer(_) => "EncryptedContainer",
+            #[cfg(feature = "crypto")]
+            DataValue::SignedContainer(_) => "SignedContainer",
+            #[cfg(feature = "crypto")]
+            DataValue::SignedEncryptedContainer(_) => "SignedEncryptedContainer",
+            DataValue::Null => "Null",
+        }
+    }
+
     #[cfg(feature = "crypto")]
     pub fn as_encrypted_container(&self) -> Option<Vec<u8>> {
         match self {
@@ -374,6 +467,60 @@ impl DataValue {
         Some(())
     }
 
+    /*
+     * Verify a `SignedContainer` without mutating self. Dispatches to
+     * Ed25519, ML-DSA-65, or both (DUAL) based on the algorithm byte
+     * embedded in the blob. Returns `false` for any other variant.
+     */
+    #[cfg(feature = "crypto")]
+    pub fn validate_signature(&self, pk: &PublicKeyBundle) -> bool {
+        let blob = match self {
+            DataValue::SignedContainer(b) => b,
+            _ => return false,
+        };
+        if blob.is_empty() {
+            return false;
+        }
+        let alg = blob[0];
+        let sig_len = match SigAlgorithm::length(alg) {
+            Some(n) => n,
+            None => return false,
+        };
+        if blob.len() < 1 + sig_len + 2 {
+            return false;
+        }
+        let signature = &blob[1..1 + sig_len];
+        let container_bytes = &blob[1 + sig_len..];
+        match alg {
+            SigAlgorithm::ED25519 => {
+                mtp_crypto::verify_ed25519(&pk.sig_cl_public_key, container_bytes, signature).is_ok()
+            }
+            SigAlgorithm::ML_DSA_65 => {
+                mtp_crypto::verify_ml_dsa(&pk.sig_pq_public_key, container_bytes, signature).is_ok()
+            }
+            SigAlgorithm::DUAL => {
+                const ED_LEN: usize = 64;
+                if signature.len() < ED_LEN {
+                    return false;
+                }
+                let ed_ok = mtp_crypto::verify_ed25519(
+                    &pk.sig_cl_public_key,
+                    container_bytes,
+                    &signature[..ED_LEN],
+                )
+                .is_ok();
+                let ml_ok = mtp_crypto::verify_ml_dsa(
+                    &pk.sig_pq_public_key,
+                    container_bytes,
+                    &signature[ED_LEN..],
+                )
+                .is_ok();
+                ed_ok && ml_ok
+            }
+            _ => false,
+        }
+    }
+
     /*
      * Encrypt a `Container` into a `SignedEncryptedContainer` in-place.
      * The container is first signed (with `algorithm`/`signer`), then the signed
@@ -895,6 +1042,133 @@ impl Hash for DataValue {
     }
 }
 
+/* ================================ FROM / TRY-FROM ================================ */
+
+impl From<bool> for DataValue {
+    fn from(v: bool) -> Self {
+        if v { DataValue::BoolTrue } else { DataValue::BoolFalse }
+    }
+}
+
+impl From<&str> for DataValue {
+    fn from(s: &str) -> Self {
+        DataValue::Str(s.to_string())
+    }
+}
+
+impl From<String> for DataValue {
+    fn from(s: String) -> Self {
+        DataValue::Str(s)
+    }
+}
+
+impl From<i64> for DataValue {
+    fn from(n: i64) -> Self {
+        DataValue::SignedNumber(n as i128)
+    }
+}
+
+impl From<i128> for DataValue {
+    fn from(n: i128) -> Self {
+        DataValue::SignedNumber(n)
+    }
+}
+
+impl From<u64> for DataValue {
+    fn from(n: u64) -> Self {
+        DataValue::UnsignedNumber(n as u128)
+    }
+}
+
+impl From<u128> for DataValue {
+    fn from(n: u128) -> Self {
+        DataValue::UnsignedNumber(n)
+    }
+}
+
+impl From<Vec<u8>> for DataValue {
+    fn from(b: Vec<u8>) -> Self {
+        DataValue::Bytes(b)
+    }
+}
+
+impl From<&[u8]> for DataValue {
+    fn from(b: &[u8]) -> Self {
+        DataValue::Bytes(b.to_vec())
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct DataValueTypeMismatch {
+    pub expected: &'static str,
+    pub got: &'static str,
+}
+
+impl fmt::Display for DataValueTypeMismatch {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "expected {}, got {}", self.expected, self.got)
+    }
+}
+
+impl std::error::Error for DataValueTypeMismatch {}
+
+impl TryFrom<DataValue> for bool {
+    type Error = DataValueTypeMismatch;
+    fn try_from(v: DataValue) -> Result<Self, Self::Error> {
+        v.as_bool().ok_or(DataValueTypeMismatch { expected: "Bool", got: v.type_name() })
+    }
+}
+
+impl TryFrom<DataValue> for String {
+    type Error = DataValueTypeMismatch;
+    fn try_from(v: DataValue) -> Result<Self, Self::Error> {
+        match v {
+            DataValue::Str(s) => Ok(s),
+            other => Err(DataValueTypeMismatch { expected: "Str", got: other.type_name() }),
+        }
+    }
+}
+
+impl TryFrom<DataValue> for i128 {
+    type Error = DataValueTypeMismatch;
+    fn try_from(v: DataValue) -> Result<Self, Self::Error> {
+        v.as_signed_number().ok_or(DataValueTypeMismatch { expected: "SignedNumber", got: v.type_name() })
+    }
+}
+
+impl TryFrom<DataValue> for i64 {
+    type Error = DataValueTypeMismatch;
+    fn try_from(v: DataValue) -> Result<Self, Self::Error> {
+        let n = v.as_signed_number().ok_or(DataValueTypeMismatch { expected: "SignedNumber", got: v.type_name() })?;
+        Ok(n as i64)
+    }
+}
+
+impl TryFrom<DataValue> for u128 {
+    type Error = DataValueTypeMismatch;
+    fn try_from(v: DataValue) -> Result<Self, Self::Error> {
+        v.as_unsigned_number().ok_or(DataValueTypeMismatch { expected: "UnsignedNumber", got: v.type_name() })
+    }
+}
+
+impl TryFrom<DataValue> for u64 {
+    type Error = DataValueTypeMismatch;
+    fn try_from(v: DataValue) -> Result<Self, Self::Error> {
+        let n = v.as_unsigned_number().ok_or(DataValueTypeMismatch { expected: "UnsignedNumber", got: v.type_name() })?;
+        Ok(n as u64)
+    }
+}
+
+impl TryFrom<DataValue> for Vec<u8> {
+    type Error = DataValueTypeMismatch;
+    fn try_from(v: DataValue) -> Result<Self, Self::Error> {
+        match v {
+            DataValue::Bytes(b) => Ok(b),
+            other => Err(DataValueTypeMismatch { expected: "Bytes", got: other.type_name() }),
+        }
+    }
+}
+
 /* ================================ TESTS ================================ */
 #[cfg(test)]
 mod tests {
@@ -1265,6 +1539,41 @@ mod tests {
         assert!(s.contains("6:"));
     }
 
+    #[test]
+    fn test_from_primitives() {
+        assert_eq!(DataValue::from(true), DataValue::BoolTrue);
+        assert_eq!(DataValue::from(false), DataValue::BoolFalse);
+        assert_eq!(DataValue::from("hello"), DataValue::Str("hello".to_string()));
+        assert_eq!(DataValue::from("hello".to_string()), DataValue::Str("hello".to_string()));
+        assert_eq!(DataValue::from(42i64), DataValue::SignedNumber(42));
+        assert_eq!(DataValue::from(42i128), DataValue::SignedNumber(42));
+        assert_eq!(DataValue::from(42u64), DataValue::UnsignedNumber(42));
+        assert_eq!(DataValue::from(42u128), DataValue::UnsignedNumber(42));
+        assert_eq!(DataValue::from(vec![1u8, 2, 3]), DataValue::Bytes(vec![1, 2, 3]));
+        assert_eq!(DataValue::from([1u8, 2, 3].as_ref()), DataValue::Bytes(vec![1, 2, 3]));
+    }
+
+    #[test]
+    fn test_try_from_ok() {
+        assert_eq!(bool::try_from(DataValue::BoolTrue).unwrap(), true);
+        assert_eq!(bool::try_from(DataValue::BoolFalse).unwrap(), false);
+        assert_eq!(String::try_from(DataValue::Str("hi".to_string())).unwrap(), "hi");
+        assert_eq!(i128::try_from(DataValue::SignedNumber(-1)).unwrap(), -1i128);
+        assert_eq!(i64::try_from(DataValue::SignedNumber(10)).unwrap(), 10i64);
+        assert_eq!(u128::try_from(DataValue::UnsignedNumber(99)).unwrap(), 99u128);
+        assert_eq!(u64::try_from(DataValue::UnsignedNumber(7)).unwrap(), 7u64);
+        assert_eq!(Vec::<u8>::try_from(DataValue::Bytes(vec![0xAB])).unwrap(), vec![0xABu8]);
+    }
+
+    #[test]
+    fn test_try_from_err() {
+        assert!(bool::try_from(DataValue::Null).is_err());
+        assert!(String::try_from(DataValue::SignedNumber(1)).is_err());
+        assert!(i128::try_from(DataValue::BoolTrue).is_err());
+        assert!(u128::try_from(DataValue::Str("x".to_string())).is_err());
+        assert!(Vec::<u8>::try_from(DataValue::Null).is_err());
+    }
+
     #[test]
     fn test_array_display() {
         let dv = DataValue::Array(vec![DataValue::SignedNumber(1), DataValue::SignedNumber(2)]);

common/src/lib.rs

@@ -16,6 +16,8 @@ pub enum CodecError {
     TooManyEntries,
     #[error("Crypto failed: {0}")]
     CryptoFailed(String),
+    #[error("Missing required field: {0}")]
+    MissingField(String),
 }
 
 /* ================================ TESTS ================================ */

crypto/src/keypair.rs

@@ -21,6 +21,12 @@ impl From<Vec<u8>> for EncryptionPrivateKey {
     }
 }
 
+impl From<&[u8]> for EncryptionPrivateKey {
+    fn from(bytes: &[u8]) -> Self {
+        Self(bytes.to_vec())
+    }
+}
+
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "serde", serde(transparent))]
 #[derive(Zeroize, ZeroizeOnDrop)]
@@ -42,6 +48,12 @@ impl From<Vec<u8>> for SignaturePrivateKey {
     }
 }
 
+impl From<&[u8]> for SignaturePrivateKey {
+    fn from(bytes: &[u8]) -> Self {
+        Self(bytes.to_vec())
+    }
+}
+
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "serde", serde(transparent))]
 #[derive(Clone)]
@@ -63,6 +75,12 @@ impl From<Vec<u8>> for EncryptionPublicKey {
     }
 }
 
+impl From<&[u8]> for EncryptionPublicKey {
+    fn from(bytes: &[u8]) -> Self {
+        Self(bytes.to_vec())
+    }
+}
+
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "serde", serde(transparent))]
 #[derive(Clone)]
@@ -84,6 +102,12 @@ impl From<Vec<u8>> for SignaturePublicKey {
     }
 }
 
+impl From<&[u8]> for SignaturePublicKey {
+    fn from(bytes: &[u8]) -> Self {
+        Self(bytes.to_vec())
+    }
+}
+
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "serde", serde(transparent))]
 #[derive(Zeroize, ZeroizeOnDrop)]
@@ -105,6 +129,12 @@ impl From<Vec<u8>> for KemPrivateKey {
     }
 }
 
+impl From<&[u8]> for KemPrivateKey {
+    fn from(bytes: &[u8]) -> Self {
+        Self(bytes.to_vec())
+    }
+}
+
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "serde", serde(transparent))]
 #[derive(Clone)]
@@ -126,6 +156,12 @@ impl From<Vec<u8>> for KemPublicKey {
     }
 }
 
+impl From<&[u8]> for KemPublicKey {
+    fn from(bytes: &[u8]) -> Self {
+        Self(bytes.to_vec())
+    }
+}
+
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "serde", serde(transparent))]
 #[derive(Clone)]
@@ -147,6 +183,12 @@ impl From<Vec<u8>> for SignaturePqPublicKey {
     }
 }
 
+impl From<&[u8]> for SignaturePqPublicKey {
+    fn from(bytes: &[u8]) -> Self {
+        Self(bytes.to_vec())
+    }
+}
+
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "serde", serde(transparent))]
 #[derive(Zeroize, ZeroizeOnDrop)]
@@ -168,6 +210,12 @@ impl From<Vec<u8>> for SignaturePqPrivateKey {
     }
 }
 
+impl From<&[u8]> for SignaturePqPrivateKey {
+    fn from(bytes: &[u8]) -> Self {
+        Self(bytes.to_vec())
+    }
+}
+
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[derive(ZeroizeOnDrop)]
 pub struct Keyring {

example/server/src/handlers.rs

@@ -31,13 +31,13 @@ pub fn process_and_respond(
     let sig_id = DataTypeId(tm.data_id_enum(DataType::SignedPayload).unwrap());
     let secure_id = DataTypeId(tm.data_id_enum(DataType::SecurePayload).unwrap());
 
-    let description = msg.get_data(desc_id);
+    let description = msg.get_data(DataType::Description);
-    let timestamp = msg.get_data(ts_id);
+    let timestamp = msg.get_data(DataType::Timestamp);
-    let data = msg.get_data(data_id);
+    let data = msg.get_data(DataType::Data);
-    let flags = msg.get_data(flags_id);
+    let flags = msg.get_data(DataType::Flags);
-    let value = msg.get_data(value_id);
+    let value = msg.get_data(DataType::Value);
-    let binary = msg.get_data(bin_id);
+    let binary = msg.get_data(DataType::BinaryData);
-    let items = msg.get_data(items_id);
+    let items = msg.get_data(DataType::Items);
 
     println!(
         "  Description: {}",
@@ -54,7 +54,7 @@ pub fn process_and_respond(
     let mut sig_status = String::from("SignedPayload: not present");
     let mut secure_status = String::from("SecurePayload: not present");
 
-    let enc = msg.get_data(enc_id);
+    let enc = msg.get_data(DataType::EncryptedPayload);
     if matches!(enc, DataValue::EncryptedContainer(_)) {
         let mut dv = enc.clone();
         if dv.decrypt_into_container(host_keyring, b"demo-aad").is_some() {
@@ -68,7 +68,7 @@ pub fn process_and_respond(
         }
     }
 
-    let sig = msg.get_data(sig_id);
+    let sig = msg.get_data(DataType::SignedPayload);
     if matches!(sig, DataValue::SignedContainer(_)) {
         if let Some(pk_bundle) = client_pk {
             let verifier = Ed25519Verifier(pk_bundle.sig_cl_public_key.clone());
@@ -88,7 +88,7 @@ pub fn process_and_respond(
         }
     }
 
-    let secure = msg.get_data(secure_id);
+    let secure = msg.get_data(DataType::SecurePayload);
     if matches!(secure, DataValue::SignedEncryptedContainer(_)) {
         if let Some(pk_bundle) = client_pk {
             let verifier = Ed25519Verifier(pk_bundle.sig_cl_public_key.clone());

host/Cargo.toml

@@ -9,6 +9,7 @@ mtp-codec = { path = "../codec", features = ["registry"] }
 mtp-transport = { path = "../transport", features = ["host"] }
 mtp-crypto = { path = "../crypto", optional = true }
 rand = "0.8"
+tokio = { version = "1", features = ["time"] }
 
 [features]
 crypto = ["dep:mtp-crypto", "mtp-codec/crypto"]

host/src/lib.rs

@@ -5,7 +5,24 @@ use mtp_codec::{
 use mtp_common::CommunicationError;
 use mtp_transport::{Policy, Receiver, Sender};
 use std::net::IpAddr;
+use std::pin::Pin;
 use std::{error::Error, fmt};
+use tokio::time::Duration;
+
+/* ---- async callback type aliases ---- */
+#[cfg(feature = "crypto")]
+type GetExistingUser = Box<
+    dyn Fn(u64) -> Pin<Box<dyn std::future::Future<Output = Option<mtp_crypto::PublicKeyBundle>> + Send>>
+        + Send
+        + Sync,
+>;
+
+#[cfg(feature = "crypto")]
+type CompleteRegister = Box<
+    dyn Fn(mtp_crypto::PublicKeyBundle) -> Pin<Box<dyn std::future::Future<Output = u64> + Send>>
+        + Send
+        + Sync,
+>;
 
 /* Host configuration. */
 pub struct HostConfig {
@@ -17,11 +34,13 @@ pub struct HostConfig {
     #[cfg(feature = "crypto")]
     pub require_authentication: bool,
     #[cfg(feature = "crypto")]
+    pub auth_timeout: Duration,
+    #[cfg(feature = "crypto")]
     pub host_keyring: mtp_crypto::Keyring,
     #[cfg(feature = "crypto")]
-    pub get_existing_user: Box<dyn Fn(u64) -> Option<mtp_crypto::PublicKeyBundle> + Send + Sync>,
+    pub get_existing_user: GetExistingUser,
     #[cfg(feature = "crypto")]
-    pub complete_register: Box<dyn Fn(mtp_crypto::PublicKeyBundle) -> u64 + Send + Sync>,
+    pub complete_register: CompleteRegister,
 }
 
 impl HostConfig {
@@ -34,6 +53,8 @@ impl HostConfig {
             #[cfg(feature = "crypto")]
             require_authentication: false,
             #[cfg(feature = "crypto")]
+            auth_timeout: Duration::from_secs(30),
+            #[cfg(feature = "crypto")]
             host_keyring: mtp_crypto::Keyring::new(
                 mtp_crypto::KemPublicKey::new(Vec::new()),
                 mtp_crypto::KemPrivateKey::new(Vec::new()),
@@ -43,9 +64,9 @@ impl HostConfig {
                 mtp_crypto::SignaturePrivateKey::new(Vec::new()),
             ),
             #[cfg(feature = "crypto")]
-            get_existing_user: Box::new(|_| None),
+            get_existing_user: Box::new(|_| Box::pin(async { None })),
             #[cfg(feature = "crypto")]
-            complete_register: Box::new(|_| 0),
+            complete_register: Box::new(|_| Box::pin(async { 0 })),
         }
     }
 
@@ -53,8 +74,14 @@ impl HostConfig {
     pub fn with_authentication(
         mut self,
         host_keyring: mtp_crypto::Keyring,
-        get_existing_user: impl Fn(u64) -> Option<mtp_crypto::PublicKeyBundle> + Send + Sync + 'static,
+        get_existing_user: impl Fn(u64) -> Pin<Box<dyn std::future::Future<Output = Option<mtp_crypto::PublicKeyBundle>> + Send>>
-        complete_register: impl Fn(mtp_crypto::PublicKeyBundle) -> u64 + Send + Sync + 'static,
+            + Send
+            + Sync
+            + 'static,
+        complete_register: impl Fn(mtp_crypto::PublicKeyBundle) -> Pin<Box<dyn std::future::Future<Output = u64> + Send>>
+            + Send
+            + Sync
+            + 'static,
     ) -> Self {
         self.require_authentication = true;
         self.host_keyring = host_keyring;
@@ -62,6 +89,12 @@ impl HostConfig {
         self.complete_register = Box::new(complete_register);
         self
     }
+
+    #[cfg(feature = "crypto")]
+    pub fn with_auth_timeout(mut self, timeout: Duration) -> Self {
+        self.auth_timeout = timeout;
+        self
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -70,6 +103,7 @@ pub enum AcceptError {
     MissingVersion,
     UnsupportedVersion(Version),
     AuthenticationFailed(String),
+    AuthenticationTimedOut,
     Send(CommunicationError),
 }
 
@@ -85,6 +119,7 @@ impl fmt::Display for AcceptError {
                 write!(f, "unsupported protocol version: {version}")
             }
             Self::AuthenticationFailed(reason) => write!(f, "authentication failed: {reason}"),
+            Self::AuthenticationTimedOut => write!(f, "authentication handshake timed out"),
             Self::Send(error) => write!(f, "failed to send handshake message: {error}"),
         }
     }
@@ -95,6 +130,7 @@ impl Error for AcceptError {}
 #[cfg(feature = "crypto")]
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum AuthState {
+    Unauthenticated,
     Pending,
     Authenticated,
     Failed,
@@ -158,7 +194,16 @@ impl MTPHost {
 
         #[cfg(feature = "crypto")]
         if self.config.require_authentication {
-            return self.accept_authenticated(sender, receiver).await;
+            let timeout = self.config.auth_timeout;
+            return match tokio::time::timeout(
+                timeout,
+                self.accept_authenticated(sender, receiver),
+            )
+            .await
+            {
+                Ok(result) => result,
+                Err(_) => Err(AcceptError::AuthenticationTimedOut),
+            };
         }
 
         // Read the first message (always encoded with reserved types).
@@ -167,13 +212,6 @@ impl MTPHost {
             Err(e) => return Err(AcceptError::Receive(e)),
         };
 
-        /*
-         * Extract the client's version from the first message.
-         * The client is expected to send DataType::Version (reserved ID 3)
-         * as a DataValue::Str("X.Y").
-         *
-         * Then negotiate the version for single-version clients
-         */
         let client_version = match extract_version(&first_msg) {
             Some(v) => v,
             None => return Err(AcceptError::MissingVersion),
@@ -195,7 +233,7 @@ impl MTPHost {
             sender,
             receiver,
             #[cfg(feature = "crypto")]
-            auth_state: AuthState::Authenticated,
+            auth_state: AuthState::Unauthenticated,
             #[cfg(feature = "crypto")]
             client_id: 0,
             #[cfg(feature = "crypto")]
@@ -280,20 +318,31 @@ impl MTPHost {
         };
 
         // ===== Step 1: receive the client's unsigned hello =====
-        let hello = receiver.receive().await.map_err(AcceptError::Receive)?;
+        let hello = match receiver.receive().await {
-        let version_str = match hello.get_data(DataType::Version.to_id(&tm)) {
+            Ok(m) => m,
+            Err(e) => {
+                sender.close();
+                return Err(AcceptError::Receive(e));
+            }
+        };
+        let version_str = match hello.get_data(DataType::Version) {
             DataValue::Str(s) => s.clone(),
             _ => {
                 sender.close();
                 return Err(AcceptError::MissingVersion);
             }
         };
-        let client_version = Version::parse(&version_str).ok_or(AcceptError::MissingVersion)?;
+        let client_version = match Version::parse(&version_str) {
+            Some(v) => v,
+            None => {
+                sender.close();
+                return Err(AcceptError::MissingVersion);
+            }
+        };
 
         let (flow, response_type) =
             if hello.get_type() == mtp_codec::CommunicationType::Identification.to_id(&tm) {
-                // LOGIN: look up the claimed user before issuing a challenge.
+                let cid = match hello.get_data(DataType::Id) {
-                let cid = match hello.get_data(DataType::Id.to_id(&tm)) {
                     DataValue::UnsignedNumber(n) => *n as u64,
                     _ => {
                         sender.close();
@@ -302,7 +351,7 @@ impl MTPHost {
                         ));
                     }
                 };
-                let bundle = match (self.config.get_existing_user)(cid) {
+                let bundle = match (self.config.get_existing_user)(cid).await {
                     Some(b) => b,
                     None => {
                         let rejection = CommunicationValue::new(
@@ -321,8 +370,7 @@ impl MTPHost {
                     mtp_codec::CommunicationType::IdentificationResponse,
                 )
             } else if hello.get_type() == mtp_codec::CommunicationType::Register.to_id(&tm) {
-                // REGISTER: the client presents the bundle it wants to register.
+                let bundle = match hello.get_data(DataType::PublicKeys) {
-                let bundle = match hello.get_data(DataType::PublicKeys.to_id(&tm)) {
                     DataValue::Bytes(b) => PublicKeyBundle::from_bytes(b).map_err(|_| {
                         AcceptError::AuthenticationFailed("invalid public key bundle".into())
                     })?,
@@ -345,7 +393,6 @@ impl MTPHost {
                 ));
             };
 
-        // The id bound into the challenge (0 for register: none assigned yet).
         let challenge_id = match &flow {
             Flow::Login { id, .. } => *id,
             Flow::Register { .. } => 0,
@@ -366,20 +413,26 @@ impl MTPHost {
             challenge_msg = challenge_msg
                 .add_typed_default(DataType::PqSignature, DataValue::Bytes(chal_pq_sig));
         }
-        sender
+        if let Err(e) = sender.send(&challenge_msg).await {
-            .send(&challenge_msg)
+            sender.close();
-            .await
+            return Err(AcceptError::Send(e));
-            .map_err(AcceptError::Send)?;
+        }
 
         // ===== Step 3: receive and verify the client's proof =====
-        let proof = receiver.receive().await.map_err(AcceptError::Receive)?;
+        let proof = match receiver.receive().await {
+            Ok(m) => m,
+            Err(e) => {
+                sender.close();
+                return Err(AcceptError::Receive(e));
+            }
+        };
         if proof.get_type() != mtp_codec::CommunicationType::ChallengeResponse.to_id(&tm) {
             sender.close();
             return Err(AcceptError::AuthenticationFailed(
                 "missing challenge response".into(),
             ));
         }
-        let client_nonce = match proof.get_data(DataType::ClientNonce.to_id(&tm)) {
+        let client_nonce = match proof.get_data(DataType::ClientNonce) {
             DataValue::UnsignedNumber(n) => *n,
             _ => {
                 sender.close();
@@ -388,7 +441,7 @@ impl MTPHost {
                 ));
             }
         };
-        let sig_bytes = match proof.get_data(DataType::Signature.to_id(&tm)) {
+        let sig_bytes = match proof.get_data(DataType::Signature) {
             DataValue::Bytes(b) => b.clone(),
             _ => {
                 sender.close();
@@ -397,7 +450,7 @@ impl MTPHost {
                 ));
             }
         };
-        let pq_sig_bytes: Vec<u8> = match proof.get_data(DataType::PqSignature.to_id(&tm)) {
+        let pq_sig_bytes: Vec<u8> = match proof.get_data(DataType::PqSignature) {
             DataValue::Bytes(b) => b.clone(),
             _ => vec![],
         };
@@ -439,7 +492,7 @@ impl MTPHost {
         let (assigned_id, client_bundle) = match flow {
             Flow::Login { id, bundle } => (id, bundle),
             Flow::Register { bundle, .. } => {
-                let new_id = (self.config.complete_register)(bundle.clone());
+                let new_id = (self.config.complete_register)(bundle.clone()).await;
                 (new_id, bundle)
             }
         };
@@ -464,14 +517,26 @@ impl MTPHost {
                 response.add_typed_default(DataType::PqSignature, DataValue::Bytes(host_pq_sig));
         }
 
-        sender.send(&response).await.map_err(AcceptError::Send)?;
+        if let Err(e) = sender.send(&response).await {
-        sender.finish_stream().await.map_err(AcceptError::Send)?;
+            sender.close();
+            return Err(AcceptError::Send(e));
+        }
+        if let Err(e) = sender.finish_stream().await {
+            sender.close();
+            return Err(AcceptError::Send(e));
+        }
 
         // ===== Version negotiation =====
-        let negotiated = self
+        let negotiated = match self
             .registry
             .negotiate(std::slice::from_ref(&client_version))
-            .ok_or(AcceptError::UnsupportedVersion(client_version))?;
+        {
+            Some(v) => v,
+            None => {
+                sender.close();
+                return Err(AcceptError::UnsupportedVersion(client_version));
+            }
+        };
         let codec = VersionedCodec::new(self.registry.clone());
 
         Ok(Some(MTPConnection {
@@ -493,8 +558,7 @@ impl MTPHost {
  * (reserved ID 3) mapping to `DataValue::Str("major.minor")`.
  */
 fn extract_version(msg: &CommunicationValue) -> Option<Version> {
-    let tm = TypeMap::latest();
+    let value = msg.get_data(DataType::Version);
-    let value = msg.get_data(DataType::Version.to_id(&tm));
     match value {
         DataValue::Str(s) => Version::parse(s.as_str()),
         _ => None,
@@ -541,4 +605,11 @@ mod tests {
         .add_data(DataType::Version.to_id(&tm), DataValue::UnsignedNumber(42));
         assert!(extract_version(&msg).is_none());
     }
+
+    #[cfg(feature = "crypto")]
+    #[test]
+    fn auth_state_unauthenticated_is_not_authenticated() {
+        assert_ne!(AuthState::Unauthenticated, AuthState::Authenticated);
+        assert_ne!(AuthState::Pending, AuthState::Authenticated);
+    }
 }

transport/tests/integration.rs

@@ -55,7 +55,7 @@ fn assert_numbered_message(
 ) {
     assert_eq!(message.get_type(), comm_type.to_id(tm));
     assert_eq!(
-        message.get_data(DataType::PqSignature.to_id(tm)).clone(),
+        message.get_data(DataType::PqSignature).clone(),
         DataValue::UnsignedNumber(value)
     );
 }

type-map/build.rs

@@ -261,12 +261,15 @@ fn generate(config: &Config, multi_version: bool) -> String {
         generate_versioned_constructors(&mut out, &sorted);
         generate_builtin_type_maps(&mut out, &sorted);
         generate_lookup_methods(&mut out, config, &sorted);
+        generate_all_types_methods(&mut out, config, &sorted);
     } else {
         generate_single_version_lookup(&mut out, config);
+        generate_all_types_methods_single(&mut out, config);
     }
 
     generate_enum_conversion_methods(&mut out);
     generate_reverse_lookups(&mut out, config, &sorted, multi_version);
+    generate_id_display_impls(&mut out);
 
     out
 }
@@ -564,6 +567,78 @@ fn generate_lookup_methods(
     writeln!(out, "            _ => None,").unwrap();
     writeln!(out, "        }}").unwrap();
     writeln!(out, "    }}").unwrap();
+    writeln!(out).unwrap();
+
+    // Reverse lookups: wire ID → enum variant (version-aware)
+    writeln!(
+        out,
+        "    pub fn comm_enum_id(&self, id: u16) -> Option<CommunicationType> {{"
+    )
+    .unwrap();
+    writeln!(out, "        match self.version {{").unwrap();
+    for (version_key, major, minor) in sorted_versions {
+        let tm_cfg = &config.type_maps[version_key];
+        writeln!(
+            out,
+            "            Version({}, {}) => match id {{",
+            major, minor
+        )
+        .unwrap();
+        for entry in RESERVED_COMM_TYPES {
+            writeln!(
+                out,
+                "                {} => Some(CommunicationType::{}),",
+                entry.id, entry.name
+            )
+            .unwrap();
+        }
+        for (name, id) in &tm_cfg.communication_types {
+            writeln!(
+                out,
+                "                {} => Some(CommunicationType::{}),",
+                id, name
+            )
+            .unwrap();
+        }
+        writeln!(out, "                _ => None,").unwrap();
+        writeln!(out, "            }},").unwrap();
+    }
+    writeln!(out, "            _ => None,").unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
+    writeln!(out).unwrap();
+
+    writeln!(
+        out,
+        "    pub fn data_enum_id(&self, id: u16) -> Option<DataType> {{"
+    )
+    .unwrap();
+    writeln!(out, "        match self.version {{").unwrap();
+    for (version_key, major, minor) in sorted_versions {
+        let tm_cfg = &config.type_maps[version_key];
+        writeln!(
+            out,
+            "            Version({}, {}) => match id {{",
+            major, minor
+        )
+        .unwrap();
+        for entry in RESERVED_DATA_TYPES {
+            writeln!(
+                out,
+                "                {} => Some(DataType::{}),",
+                entry.id, entry.name
+            )
+            .unwrap();
+        }
+        for (name, id) in &tm_cfg.data_types {
+            writeln!(out, "                {} => Some(DataType::{}),", id, name).unwrap();
+        }
+        writeln!(out, "                _ => None,").unwrap();
+        writeln!(out, "            }},").unwrap();
+    }
+    writeln!(out, "            _ => None,").unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
     writeln!(out, "}}").unwrap();
     writeln!(out).unwrap();
 }
@@ -631,6 +706,66 @@ fn generate_single_version_lookup(out: &mut String, config: &Config) {
     writeln!(out, "            _ => None,").unwrap();
     writeln!(out, "        }}").unwrap();
     writeln!(out, "    }}").unwrap();
+    writeln!(out).unwrap();
+
+    // Reverse lookups: wire ID → enum variant (single version)
+    writeln!(
+        out,
+        "    pub fn comm_enum_id(&self, id: u16) -> Option<CommunicationType> {{"
+    )
+    .unwrap();
+    writeln!(out, "        match self.version {{").unwrap();
+    writeln!(out, "            PROTOCOL_VERSION => match id {{").unwrap();
+    for entry in RESERVED_COMM_TYPES {
+        writeln!(
+            out,
+            "                {} => Some(CommunicationType::{}),",
+            entry.id, entry.name
+        )
+        .unwrap();
+    }
+    if let Some(tm_cfg) = tm_cfg {
+        for (name, id) in &tm_cfg.communication_types {
+            writeln!(
+                out,
+                "                {} => Some(CommunicationType::{}),",
+                id, name
+            )
+            .unwrap();
+        }
+    }
+    writeln!(out, "                _ => None,").unwrap();
+    writeln!(out, "            }},").unwrap();
+    writeln!(out, "            _ => None,").unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
+    writeln!(out).unwrap();
+
+    writeln!(
+        out,
+        "    pub fn data_enum_id(&self, id: u16) -> Option<DataType> {{"
+    )
+    .unwrap();
+    writeln!(out, "        match self.version {{").unwrap();
+    writeln!(out, "            PROTOCOL_VERSION => match id {{").unwrap();
+    for entry in RESERVED_DATA_TYPES {
+        writeln!(
+            out,
+            "                {} => Some(DataType::{}),",
+            entry.id, entry.name
+        )
+        .unwrap();
+    }
+    if let Some(tm_cfg) = tm_cfg {
+        for (name, id) in &tm_cfg.data_types {
+            writeln!(out, "                {} => Some(DataType::{}),", id, name).unwrap();
+        }
+    }
+    writeln!(out, "                _ => None,").unwrap();
+    writeln!(out, "            }},").unwrap();
+    writeln!(out, "            _ => None,").unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
     writeln!(out, "}}").unwrap();
     writeln!(out).unwrap();
 }
@@ -745,3 +880,187 @@ fn generate_enum_conversion_methods(out: &mut String) {
     writeln!(out, "}}").unwrap();
     writeln!(out).unwrap();
 }
+
+fn generate_all_types_methods(
+    out: &mut String,
+    config: &Config,
+    sorted_versions: &[(String, u16, u16)],
+) {
+    writeln!(out, "#[allow(unreachable_patterns)]").unwrap();
+    writeln!(out, "impl TypeMap {{").unwrap();
+    writeln!(
+        out,
+        "    pub fn all_comm_types(&self) -> &'static [CommunicationType] {{"
+    )
+    .unwrap();
+    writeln!(out, "        match self.version {{").unwrap();
+    for (version_key, major, minor) in sorted_versions {
+        let tm_cfg = &config.type_maps[version_key];
+        write!(out, "            Version({}, {}) => &[", major, minor).unwrap();
+        let mut first = true;
+        for entry in RESERVED_COMM_TYPES {
+            if !first {
+                write!(out, ", ").unwrap();
+            }
+            write!(out, "CommunicationType::{}", entry.name).unwrap();
+            first = false;
+        }
+        for (name, _) in &tm_cfg.communication_types {
+            if !first {
+                write!(out, ", ").unwrap();
+            }
+            write!(out, "CommunicationType::{}", name).unwrap();
+            first = false;
+        }
+        writeln!(out, "],").unwrap();
+    }
+    writeln!(out, "            _ => &[],").unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
+    writeln!(out).unwrap();
+
+    writeln!(
+        out,
+        "    pub fn all_data_types(&self) -> &'static [DataType] {{"
+    )
+    .unwrap();
+    writeln!(out, "        match self.version {{").unwrap();
+    for (version_key, major, minor) in sorted_versions {
+        let tm_cfg = &config.type_maps[version_key];
+        write!(out, "            Version({}, {}) => &[", major, minor).unwrap();
+        let mut first = true;
+        for entry in RESERVED_DATA_TYPES {
+            if !first {
+                write!(out, ", ").unwrap();
+            }
+            write!(out, "DataType::{}", entry.name).unwrap();
+            first = false;
+        }
+        for (name, _) in &tm_cfg.data_types {
+            if !first {
+                write!(out, ", ").unwrap();
+            }
+            write!(out, "DataType::{}", name).unwrap();
+            first = false;
+        }
+        writeln!(out, "],").unwrap();
+    }
+    writeln!(out, "            _ => &[],").unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
+    writeln!(out, "}}").unwrap();
+    writeln!(out).unwrap();
+}
+
+fn generate_all_types_methods_single(out: &mut String, config: &Config) {
+    let tm_cfg = config.type_maps.get(&config.protocol_version);
+
+    writeln!(out, "#[allow(unreachable_patterns)]").unwrap();
+    writeln!(out, "impl TypeMap {{").unwrap();
+    writeln!(
+        out,
+        "    pub fn all_comm_types(&self) -> &'static [CommunicationType] {{"
+    )
+    .unwrap();
+    writeln!(out, "        match self.version {{").unwrap();
+    write!(out, "            PROTOCOL_VERSION => &[").unwrap();
+    let mut first = true;
+    for entry in RESERVED_COMM_TYPES {
+        if !first {
+            write!(out, ", ").unwrap();
+        }
+        write!(out, "CommunicationType::{}", entry.name).unwrap();
+        first = false;
+    }
+    if let Some(tm_cfg) = tm_cfg {
+        for (name, _) in &tm_cfg.communication_types {
+            if !first {
+                write!(out, ", ").unwrap();
+            }
+            write!(out, "CommunicationType::{}", name).unwrap();
+            first = false;
+        }
+    }
+    writeln!(out, "],").unwrap();
+    writeln!(out, "            _ => &[],").unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
+    writeln!(out).unwrap();
+
+    writeln!(
+        out,
+        "    pub fn all_data_types(&self) -> &'static [DataType] {{"
+    )
+    .unwrap();
+    writeln!(out, "        match self.version {{").unwrap();
+    write!(out, "            PROTOCOL_VERSION => &[").unwrap();
+    let mut first = true;
+    for entry in RESERVED_DATA_TYPES {
+        if !first {
+            write!(out, ", ").unwrap();
+        }
+        write!(out, "DataType::{}", entry.name).unwrap();
+        first = false;
+    }
+    if let Some(tm_cfg) = tm_cfg {
+        for (name, _) in &tm_cfg.data_types {
+            if !first {
+                write!(out, ", ").unwrap();
+            }
+            write!(out, "DataType::{}", name).unwrap();
+            first = false;
+        }
+    }
+    writeln!(out, "],").unwrap();
+    writeln!(out, "            _ => &[],").unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
+    writeln!(out, "}}").unwrap();
+    writeln!(out).unwrap();
+}
+
+fn generate_id_display_impls(out: &mut String) {
+    writeln!(out, "impl std::fmt::Display for CommunicationTypeId {{").unwrap();
+    writeln!(
+        out,
+        "    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {{"
+    )
+    .unwrap();
+    writeln!(
+        out,
+        "        match communication_type_name(self.0) {{"
+    )
+    .unwrap();
+    writeln!(out, "            Some(name) => f.write_str(name),").unwrap();
+    writeln!(
+        out,
+        "            None => write!(f, \"CommTypeId({{}})\", self.0),"
+    )
+    .unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
+    writeln!(out, "}}").unwrap();
+    writeln!(out).unwrap();
+
+    writeln!(out, "impl std::fmt::Display for DataTypeId {{").unwrap();
+    writeln!(
+        out,
+        "    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {{"
+    )
+    .unwrap();
+    writeln!(
+        out,
+        "        match data_type_name(self.0) {{"
+    )
+    .unwrap();
+    writeln!(out, "            Some(name) => f.write_str(name),").unwrap();
+    writeln!(
+        out,
+        "            None => write!(f, \"DataTypeId({{}})\", self.0),"
+    )
+    .unwrap();
+    writeln!(out, "        }}").unwrap();
+    writeln!(out, "    }}").unwrap();
+    writeln!(out, "}}").unwrap();
+    writeln!(out).unwrap();
+}

type-map/src/lib.rs

@@ -62,6 +62,16 @@ impl std::fmt::Display for Version {
     }
 }
 
+impl Version {
+    pub fn is_newer_than(&self, other: &Version) -> bool {
+        self > other
+    }
+
+    pub fn is_compatible_with(&self, other: &Version) -> bool {
+        self.0 == other.0
+    }
+}
+
 /*
  * A single protocol version's type dictionary.
  * Compiled into the client, or loaded by the host via the registry.

wasm/src/client.rs

@@ -159,11 +159,11 @@ fn verify_host_challenge(
     id: u64,
     server_challenge: u128,
 ) -> Result<(), JsValue> {
-    let sig = match challenge.get_data(DataType::Signature.to_id(tm)) {
+    let sig = match challenge.get_data(DataType::Signature) {
         DataValue::Bytes(b) => b.clone(),
         _ => return Err(js_error("missing host challenge signature")),
     };
-    let pq_sig = match challenge.get_data(DataType::PqSignature.to_id(tm)) {
+    let pq_sig = match challenge.get_data(DataType::PqSignature) {
         DataValue::Bytes(b) => b.clone(),
         _ => vec![],
     };
@@ -191,14 +191,14 @@ fn verify_host_final(
     client_nonce: u128,
     server_challenge: u128,
 ) -> Result<(), JsValue> {
-    if *resp.get_data(DataType::ClientNonce.to_id(tm)) != DataValue::UnsignedNumber(client_nonce) {
+    if *resp.get_data(DataType::ClientNonce) != DataValue::UnsignedNumber(client_nonce) {
         return Err(js_error("nonce mismatch"));
     }
-    let host_sig = match resp.get_data(DataType::Signature.to_id(tm)) {
+    let host_sig = match resp.get_data(DataType::Signature) {
         DataValue::Bytes(b) => b.clone(),
         _ => return Err(js_error("missing host signature")),
     };
-    let host_pq_sig = match resp.get_data(DataType::PqSignature.to_id(tm)) {
+    let host_pq_sig = match resp.get_data(DataType::PqSignature) {
         DataValue::Bytes(b) => b.clone(),
         _ => vec![],
     };
@@ -393,7 +393,7 @@ impl WasmClient {
             ));
         }
 
-        if resp_comm.get_data(DataType::Connected.to_id(&tm)) != &DataValue::BoolTrue {
+        if resp_comm.get_data(DataType::Connected) != &DataValue::BoolTrue {
             self.set_state(ConnectionState::Disconnected);
             return Err(js_error("host rejected authentication"));
         }
@@ -412,7 +412,7 @@ impl WasmClient {
         }
 
         // Extract assigned ID
-        let assigned_id = match resp_comm.get_data(DataType::Id.to_id(&tm)) {
+        let assigned_id = match resp_comm.get_data(DataType::Id) {
             DataValue::UnsignedNumber(n) => *n as u64,
             _ => {
                 self.set_state(ConnectionState::Disconnected);
@@ -495,12 +495,12 @@ impl WasmClient {
             ));
         }
 
-        if resp_comm.get_data(DataType::Connected.to_id(&tm)) != &DataValue::BoolTrue {
+        if resp_comm.get_data(DataType::Connected) != &DataValue::BoolTrue {
             self.set_state(ConnectionState::Disconnected);
             return Err(js_error("host rejected registration"));
         }
 
-        let assigned_id = match resp_comm.get_data(DataType::Id.to_id(&tm)) {
+        let assigned_id = match resp_comm.get_data(DataType::Id) {
             DataValue::UnsignedNumber(n) => *n as u64,
             _ => {
                 self.set_state(ConnectionState::Disconnected);
@@ -731,7 +731,7 @@ impl WasmClient {
             ));
         }
 
-        let server_challenge = match challenge.get_data(DataType::ServerNonce.to_id(tm)) {
+        let server_challenge = match challenge.get_data(DataType::ServerNonce) {
             DataValue::UnsignedNumber(n) => *n,
             _ => {
                 self.set_state(ConnectionState::Disconnected);

wasm/src/frame.rs

@@ -254,26 +254,26 @@ pub fn parse_auth_response(response: &[u8]) -> Result<JsValue, JsValue> {
         .map_err(|e| js_error(&format!("parse failed: {}", e)))?;
 
     let connected = matches!(
-        comm.get_data(DataType::Connected.to_id(&TypeMap::latest())),
+        comm.get_data(DataType::Connected)),
         DataValue::BoolTrue
     );
 
-    let client_nonce = match comm.get_data(DataType::ClientNonce.to_id(&TypeMap::latest())) {
+    let client_nonce = match comm.get_data(DataType::ClientNonce)) {
         DataValue::UnsignedNumber(n) => Some(*n),
         _ => None,
     };
 
-    let assigned_id = match comm.get_data(DataType::Id.to_id(&TypeMap::latest())) {
+    let assigned_id = match comm.get_data(DataType::Id)) {
         DataValue::UnsignedNumber(n) => Some(*n as u64),
         _ => None,
     };
 
-    let timestamp = match comm.get_data(DataType::Timestamp.to_id(&TypeMap::latest())) {
+    let timestamp = match comm.get_data(DataType::Timestamp)) {
         DataValue::UnsignedNumber(n) => Some(*n),
         _ => None,
     };
 
-    let signature = match comm.get_data(DataType::Signature.to_id(&TypeMap::latest())) {
+    let signature = match comm.get_data(DataType::Signature)) {
         DataValue::Bytes(b) => Some(b.clone()),
         _ => None,
     };
@@ -376,11 +376,11 @@ mod tests {
         assert_eq!(cv.get_type(), CommunicationType::Ping.to_id(&tm));
         assert_eq!(cv.get_sender(), 42);
         assert_eq!(
-            cv.get_data(DataType::Description.to_id(&tm)),
+            cv.get_data(DataType::Description),
             &DataValue::Str("test-ping".into())
         );
         assert_eq!(
-            cv.get_data(DataType::Timestamp.to_id(&tm)),
+            cv.get_data(DataType::Timestamp),
             &DataValue::UnsignedNumber(1234567890)
         );
     }
@@ -395,15 +395,15 @@ mod tests {
         assert_eq!(cv.get_type(), CommunicationType::Ping.to_id(&tm));
         assert_eq!(cv.get_sender(), 99);
         assert_eq!(
-            cv.get_data(DataType::Description.to_id(&tm)),
+            cv.get_data(DataType::Description),
             &DataValue::Str("with-data".into())
         );
         assert_eq!(
-            cv.get_data(DataType::Timestamp.to_id(&tm)),
+            cv.get_data(DataType::Timestamp),
             &DataValue::UnsignedNumber(555)
         );
         assert_eq!(
-            cv.get_data(DataType::Id.to_id(&tm)),
+            cv.get_data(DataType::Id),
             &DataValue::Bytes(payload.to_vec())
         );
     }