diff --git a/libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp b/libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp
index 13b1091b..271a959e 100644
--- a/libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp
+++ b/libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp
@@ -2529,9 +2529,19 @@ extern "C" OEMCryptoResult OEMCrypto_LoadProvisioningCast(
         "AUTHENTICATION", provision_request, provision_request_length, 0x200);
     const std::vector<uint8_t> enc_context = MakeContext(
         "ENCRYPTION", provision_request, provision_request_length, 0x80);
-    const OEMCryptoResult result = pair.fcn->DeriveKeysFromSessionKey_V18(
-        pair.session, derivation_key, derivation_key_length, mac_context.data(),
-        mac_context.size(), enc_context.data(), enc_context.size());
+    const OEMCrypto_ProvisioningMethod provisioning_method =
+        pair.fcn->GetProvisioningMethod != nullptr
+            ? pair.fcn->GetProvisioningMethod()
+            : OEMCrypto_Keybox;
+    const OEMCryptoResult result =
+        (provisioning_method == OEMCrypto_BootCertificateChain)
+            ? pair.fcn->DeriveKeysFromSessionKey_V18(
+                  pair.session, derivation_key, derivation_key_length,
+                  mac_context.data(), mac_context.size(), enc_context.data(),
+                  enc_context.size())
+            : pair.fcn->GenerateDerivedKeys_V18(
+                  pair.session, mac_context.data(), mac_context.size(),
+                  enc_context.data(), enc_context.size());
     if (result != OEMCrypto_SUCCESS) return result;
 
     return pair.fcn->LoadProvisioning_V18(