tss-esapi/transient: get_root_key_name

Expose the root key name of a TransientKeyContext.
This may be used for verifying previously generated keys.

Signed-off-by: Tomás González <tomasagustin.gonzalezorlando@arm.com>

Author: tgonzalezorlandoarm

tss-esapi/src/abstraction/transient/mod.rs

@@ -10,15 +10,15 @@ use crate::{
     attributes::{ObjectAttributesBuilder, SessionAttributesBuilder},
     constants::{SessionType, TpmFormatZeroError},
     error::{TpmFormatZeroResponseCode, TpmResponseCode},
-    handles::{KeyHandle, SessionHandle},
+    handles::{KeyHandle, ObjectHandle, SessionHandle},
     interface_types::{
         algorithm::{HashingAlgorithm, PublicAlgorithm},
         ecc::EccCurve,
         key_bits::RsaKeyBits,
         reserved_handles::Hierarchy,
     },
     structures::{
-        Auth, CreateKeyResult, Data, Digest, EccPoint, EccScheme, Public, PublicBuilder,
+        Auth, CreateKeyResult, Data, Digest, EccPoint, EccScheme, Name, Public, PublicBuilder,
         PublicEccParametersBuilder, PublicKeyRsa, PublicRsaParametersBuilder, RsaExponent,
         RsaScheme, Signature, SignatureScheme, SymmetricDefinitionObject, VerifiedTicket,
     },
@@ -386,6 +386,12 @@ impl TransientKeyContext {
         Ok(key_material)
     }
 
+    /// Gets the name of the root key of the TransientKeyContext
+    pub fn get_root_key_name(&mut self) -> Result<Name> {
+        let obj_handle: ObjectHandle = self.root_key_handle.into();
+        self.context.tr_get_name(obj_handle)
+    }
+
     /// Sets the encrypt and decrypt flags on the main session used by the context.
     ///
     /// # Errors