[Presence] Deprecate version bytes field of shared credential protos and add credential_version to be used as an integer generic credential version field

PiperOrigin-RevId: 665517202

internal/proto/credential.proto

@@ -42,7 +42,7 @@ enum CredentialType {
 // The shared credential is derived from local credential, and distributed to
 // remote devices based on the trust token for identity decryption and
 // authentication.
-// NEXT_ID=19
+// NEXT_ID=20
 // LINT.IfChange(SharedCredential)
 message SharedCredential {
   // The randomly generated unique id of the public credential.
@@ -80,7 +80,7 @@ message SharedCredential {
 
   // The version number of this SharedCredential, matches the corresponding
   // protocol version.
-  bytes version = 10;
+  bytes version = 10 [deprecated = true];
 
   // The type assigned to the credential. The CredentialType is used to
   // determine whether a device identity credential or account based identity
@@ -113,5 +113,8 @@ message SharedCredential {
   // The HMAC of the plaintext identity token included (in encrypted form) in a
   // signed V1 advertisement.
   bytes identity_token_signed_adv_hmac_key_v1 = 18;
+
+  // Credential version used to infer the expected credential material.
+  uint64 credential_version = 19;
 }
 // LINT.ThenChange(//depot/google3/google/internal/location/nearby/presence/v1/nearby_resources.proto:SharedCredential)

internal/proto/local_credential.proto

@@ -28,7 +28,7 @@ option optimize_for = LITE_RUNTIME;
 // The local credential contains information of a local device for
 // identity encryption and authentication. It should never leave the generating
 // device.
-// NEXT_ID=13
+// NEXT_ID=14
 message LocalCredential {
   // Private signing key descriptor.
   // For Ed25519PrivateKey, both `certificate_alias` and `encrypted_key` is set.
@@ -84,4 +84,7 @@ message LocalCredential {
   // Signature algorithm version. Used to determine which algorithm to use to
   // sign data.
   string signature_version = 12;
+
+  // Credential version used to infer the expected credential material.
+  uint64 credential_version = 13;
 }