Add verification library code.

A golang library and test suite has been added to start testing DPE
end to end. There will need to be a layer added to abstract the
transport layer and allow testing with devices as well as the simulator.
Currently the simulator is the only working option.

dpe/src/commands.rs

@@ -79,7 +79,12 @@ impl TryFrom<&[u8]> for CommandHdr {
             cmd_id: u32::from_le_bytes(raw[4..8].try_into().unwrap()),
             profile: u32::from_le_bytes(raw[8..12].try_into().unwrap()),
         };
-        if header.magic != Self::DPE_COMMAND_MAGIC || header.profile != DPE_PROFILE as u32 {
+        if header.magic != Self::DPE_COMMAND_MAGIC {
+            return Err(DpeErrorCode::InvalidCommand);
+        }
+        // The client doesn't know what profile is implemented when calling the `GetProfile`
+        // command. But, all other commands should be directed towards the correct profile.
+        if header.cmd_id != Command::GET_PROFILE && header.profile != DPE_PROFILE as u32 {
             return Err(DpeErrorCode::InvalidCommand);
         }
         Ok(header)
@@ -257,17 +262,29 @@ mod tests {
         #[cfg(feature = "dpe_profile_p384_sha384")]
         let wrong_profile = DpeProfile::P256Sha256 as u32;
 
+        // All commands should check the profile except GetProfile.
         assert_eq!(
             invalid_command,
             CommandHdr::try_from(
                 Vec::<u8>::from(CommandHdr {
                     profile: wrong_profile,
+                    cmd_id: Command::INITIALIZE_CONTEXT,
                     ..DEFAULT_COMMAND
                 })
                 .as_slice()
             )
         );
 
+        // Make sure GetProfile doesn't care.
+        assert!(CommandHdr::try_from(
+            Vec::<u8>::from(CommandHdr {
+                profile: wrong_profile,
+                ..DEFAULT_COMMAND
+            })
+            .as_slice()
+        )
+        .is_ok());
+
         // Test correct command. Using random command ID to check endianness and consistency.
         const GOOD_HEADER: CommandHdr = CommandHdr {
             cmd_id: 0x8765_4321,

dpe/src/dpe_instance.rs

@@ -113,11 +113,11 @@ impl Default for TciMeasurement {
 
 #[derive(Default)]
 pub struct Support {
-    simulation: bool,
-    extend_tci: bool,
-    auto_init: bool,
-    tagging: bool,
-    rotate_context: bool,
+    pub simulation: bool,
+    pub extend_tci: bool,
+    pub auto_init: bool,
+    pub tagging: bool,
+    pub rotate_context: bool,
 }
 
 impl Support {

simulator/Cargo.toml

@@ -8,4 +8,5 @@ edition = "2021"
 [dependencies]
 ctrlc = { version = "3.0", features = ["termination"] }
 openssl = "0.10"
+clap = { version = "4.1.8", features = ["derive"] }
 dpe = { path = "../dpe" }