fix: cherry picks from closed PR on multiple signing keys - MPC context in custodian backup

Cargo.toml

@@ -28,6 +28,7 @@ members = [
 # backward-compatibility/generate-v0.11.1 - Data generation for v0.11.1 with old KMS version dependencies
 # backward-compatibility/generate-v0.13.0 - Data generation for v0.13.0 with old KMS version dependencies
 # backward-compatibility/generate-v0.13.10 - Data generation for v0.13.10 with old KMS version dependencies
+# backward-compatibility/generate-v0.13.20 - Data generation for v0.13.20 with old KMS version dependencies
 #
 # The generate crates need to import old KMS versions (e.g., v0.11.0, v0.11.1) which conflict with the
 # current workspace dependencies, creating name conflicts as described in:
@@ -36,7 +37,7 @@ members = [
 # Note: It's not possible to only generate the lock file using specific features as the resolver
 # builds the graph as if all features are enabled:
 # https://doc.rust-lang.org/cargo/reference/resolver.html#features
-exclude = ["backward-compatibility", "backward-compatibility/generate-v0.11.0", "backward-compatibility/generate-v0.11.1", "backward-compatibility/generate-v0.13.0", "backward-compatibility/generate-v0.13.10"]
+exclude = ["backward-compatibility", "backward-compatibility/generate-v0.11.0", "backward-compatibility/generate-v0.11.1", "backward-compatibility/generate-v0.13.0", "backward-compatibility/generate-v0.13.10", "backward-compatibility/generate-v0.13.20"]
 
 [workspace.package]
 authors = ["Zama"]

Makefile

@@ -41,6 +41,7 @@ clean-backward-compatibility-data:
 	rm -rf backward-compatibility/data/0_11_1
 	rm -rf backward-compatibility/data/0_13_0
 	rm -rf backward-compatibility/data/0_13_10
+	rm -rf backward-compatibility/data/0_13_20
 
 generate-backward-compatibility-v0.11.0:
 	cd backward-compatibility/generate-v0.11.0 && cargo run --release
@@ -53,8 +54,11 @@ generate-backward-compatibility-v0.13.0:
 
 generate-backward-compatibility-v0.13.10:
 	cd backward-compatibility/generate-v0.13.10 && cargo run --release
+
+generate-backward-compatibility-v0.13.20:
+	cd backward-compatibility/generate-v0.13.20 && cargo run --release
 
-generate-backward-compatibility-all: clean-backward-compatibility-data generate-backward-compatibility-v0.11.0 generate-backward-compatibility-v0.11.1 generate-backward-compatibility-v0.13.0 generate-backward-compatibility-v0.13.10
+generate-backward-compatibility-all: clean-backward-compatibility-data generate-backward-compatibility-v0.11.0 generate-backward-compatibility-v0.11.1 generate-backward-compatibility-v0.13.0 generate-backward-compatibility-v0.13.10 generate-backward-compatibility-v0.13.20
 	@echo "Generated backward compatibility data for all versions"
 
 # Test material generation targets

backward-compatibility/data/kms-grpc.ron

@@ -92,4 +92,29 @@
             test_filename: "priv_data_type",
         )),
     ),
+    (
+        kms_core_version_min: "0.13.20",
+        kms_core_module: "kms-grpc",
+        metadata: SignedPubDataHandleInternal((
+            test_filename: "signed_pub_data_handle_internal",
+            state: 100,
+            key_handle: "key_handle",
+            signature: (1, 2, 3),
+            external_signature: (4, 5, 6),
+        )),
+    ),
+    (
+        kms_core_version_min: "0.13.20",
+        kms_core_module: "kms-grpc",
+        metadata: PubDataType((
+            test_filename: "pub_data_type",
+        )),
+    ),
+    (
+        kms_core_version_min: "0.13.20",
+        kms_core_module: "kms-grpc",
+        metadata: PrivDataType((
+            test_filename: "priv_data_type",
+        )),
+    ),
 ]