Use general term "attestation evidence" in watcher

Previously `mc-watcher` used "verification report" or similar to refer
to the `VerificationReport`. With the anticipated use of `DcapEvidence`
`mc-watcher` has been updated to use a more generic term of "attestation
evidence" where appropriate.

attest/ake/src/event.rs

@@ -314,26 +314,26 @@ impl From<AuthResponseInput> for Vec<u8> {
 /// An authentication response input to a responder
 impl MealyInput for AuthResponseInput {}
 
-/// An unverified report is used when the initiator may not know the identity of
-/// the enclave.
-pub struct UnverifiedReport {
+/// An unverified attestation evidence is used when the initiator may not
+/// know the identity of the enclave.
+pub struct UnverifiedAttestationEvidence {
     pub(crate) data: Vec<u8>,
 }
 
-impl UnverifiedReport {
+impl UnverifiedAttestationEvidence {
     pub fn new(data: AuthResponseOutput) -> Self {
         Self { data: data.0 }
     }
 }
 
-impl AsRef<[u8]> for UnverifiedReport {
+impl AsRef<[u8]> for UnverifiedAttestationEvidence {
     fn as_ref(&self) -> &[u8] {
         self.data.as_ref()
     }
 }
 
 /// An authentication response from a responder
-impl MealyInput for UnverifiedReport {}
+impl MealyInput for UnverifiedAttestationEvidence {}
 
 /// The IAS report is the final output when authentication succeeds.
 impl MealyOutput for VerificationReport {}

attest/ake/src/initiator.rs

@@ -4,7 +4,7 @@
 
 use crate::{
     AuthPending, AuthRequestOutput, AuthResponseInput, ClientInitiate, Error, NodeInitiate, Ready,
-    Start, Terminated, Transition, UnverifiedReport,
+    Start, Terminated, Transition, UnverifiedAttestationEvidence,
 };
 use alloc::vec::Vec;
 use mc_attest_core::{ReportDataMask, VerificationReport};
@@ -198,7 +198,8 @@ where
 }
 
 /// AuthPending + UnverifiedReport => Terminated + VerificationReport
-impl<KexAlgo, Cipher, DigestAlgo> Transition<Terminated, UnverifiedReport, VerificationReport>
+impl<KexAlgo, Cipher, DigestAlgo>
+    Transition<Terminated, UnverifiedAttestationEvidence, VerificationReport>
     for AuthPending<KexAlgo, Cipher, DigestAlgo>
 where
     KexAlgo: Kex,
@@ -210,7 +211,7 @@ where
     fn try_next<R: CryptoRng + RngCore>(
         self,
         _csprng: &mut R,
-        input: UnverifiedReport,
+        input: UnverifiedAttestationEvidence,
     ) -> Result<(Terminated, VerificationReport), Self::Error> {
         let output = self
             .state

attest/ake/src/lib.rs

@@ -24,7 +24,7 @@ pub use crate::{
     event::{
         AuthRequestOutput, AuthResponseInput, AuthResponseOutput, Ciphertext,
         ClientAuthRequestInput, ClientInitiate, NodeAuthRequestInput, NodeInitiate, Plaintext,
-        UnverifiedReport,
+        UnverifiedAttestationEvidence,
     },
     mealy::Transition,
     state::{AuthPending, Ready, Start, Terminated},