[KeyVault] Add oct-HSM support to JsonWebKeyType (#44193)

Co-authored-by: Nicola Camillucci <ncamillucci@microsoft.com>

Author: ncamillucci

specification/keyvault/resource-manager/Microsoft.KeyVault/KeyVault/back-compatible.tsp

@@ -212,6 +212,7 @@ using Azure.Core;
 
 @@clientName(JsonWebKeyType.`EC-HSM`, "EC_HSM", "python");
 @@clientName(JsonWebKeyType.`RSA-HSM`, "RSA_HSM", "python");
+@@clientName(JsonWebKeyType.`oct-HSM`, "oct_HSM", "python");
 
 // Override the order of path parameters
 #suppress "@azure-tools/typespec-azure-core/casing-style" "customization"

specification/keyvault/resource-manager/Microsoft.KeyVault/KeyVault/models.tsp

@@ -36,6 +36,10 @@ union JsonWebKeyType {
   RSA: "RSA",
   #suppress "@azure-tools/typespec-azure-core/documentation-required" "FIXME: Update justification, follow aka.ms/tsp/conversion-fix for details"
   `RSA-HSM`: "RSA-HSM",
+
+  #suppress "@azure-tools/typespec-azure-core/documentation-required" "FIXME: Update justification, follow aka.ms/tsp/conversion-fix for details"
+  @Versioning.added(KeyVault.Versions.v2026_03_01_preview)
+  `oct-HSM`: "oct-HSM",
 }
 
 /**

specification/keyvault/resource-manager/Microsoft.KeyVault/KeyVault/preview/2026-03-01-preview/openapi.json

@@ -3472,7 +3472,8 @@
         "EC",
         "EC-HSM",
         "RSA",
-        "RSA-HSM"
+        "RSA-HSM",
+        "oct-HSM"
       ],
       "x-ms-enum": {
         "name": "JsonWebKeyType",
@@ -3493,6 +3494,10 @@
           {
             "name": "RSA-HSM",
             "value": "RSA-HSM"
+          },
+          {
+            "name": "oct-HSM",
+            "value": "oct-HSM"
           }
         ]
       }