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Fix GenerateDerivedKeys_V18 call in dynamic adpater for prov4

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The deprecated GenerateDerivedKeys_V18() should only be called by
OEMCrypto_PrepAndSignProvisioningRequest() in case of prov2.

Test: run_dynamic_oemcrypto_v18_p40
Bug: 317900423
Change-Id: Iff75c26a3ea107fb01e636c53528e845e24193bd
This commit is contained in:
Cong Lin
2024-02-06 13:32:12 -08:00
committed by Robert Shih
parent 7491e5e486
commit baedda469b
1 changed files with 16 additions and 5 deletions
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21
libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp
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@@ -2152,8 +2152,13 @@ extern "C" OEMCryptoResult OEMCrypto_PrepAndSignProvisioningRequest(
LevelSession pair = gAdapter->GetSession(session);
if (!pair.fcn) return OEMCrypto_ERROR_INVALID_SESSION;
if (pair.fcn->PrepAndSignProvisioningRequest != nullptr) {
const OEMCrypto_ProvisioningMethod provisioning_method =
pair.fcn->GetProvisioningMethod != nullptr
? pair.fcn->GetProvisioningMethod()
: OEMCrypto_Keybox;
if (pair.fcn->version < 19 &&
pair.fcn->GenerateDerivedKeys_V18 != nullptr) {
pair.fcn->GenerateDerivedKeys_V18 != nullptr &&
provisioning_method == OEMCrypto_Keybox) {
if (!core_message_length || *core_message_length > message_length) {
return OEMCrypto_ERROR_INVALID_CONTEXT;
}
@@ -2488,8 +2493,12 @@ extern "C" OEMCryptoResult OEMCrypto_LoadProvisioning(
core_message_length, signature, signature_length, wrapped_private_key,
wrapped_private_key_length);
}
if (pair.fcn->LoadProvisioning_V18 != nullptr &&
pair.fcn->GenerateDerivedKeys_V18 != nullptr) {
const OEMCrypto_ProvisioningMethod provisioning_method =
pair.fcn->GetProvisioningMethod != nullptr
? pair.fcn->GetProvisioningMethod()
: OEMCrypto_Keybox;
if (pair.fcn->GenerateDerivedKeys_V18 != nullptr &&
provisioning_method == OEMCrypto_Keybox) {
const std::vector<uint8_t> mac_context =
MakeContext("AUTHENTICATION", request, request_length, 0x200);
const std::vector<uint8_t> enc_context =
@@ -2498,13 +2507,15 @@ extern "C" OEMCryptoResult OEMCrypto_LoadProvisioning(
pair.session, mac_context.data(), mac_context.size(),
enc_context.data(), enc_context.size());
if (result != OEMCrypto_SUCCESS) return result;
}
if (pair.fcn->LoadProvisioning_V18 != nullptr) {
return pair.fcn->LoadProvisioning_V18(
pair.session, message, message_length, core_message_length, signature,
signature_length, wrapped_private_key, wrapped_private_key_length);
}
} else {
return OEMCrypto_ERROR_NOT_IMPLEMENTED;
}
}
extern "C" OEMCryptoResult OEMCrypto_LoadProvisioningCast(
OEMCrypto_SESSION session, const uint8_t* derivation_key,