Widevine MediaCas client code that works with Android R
This commit is contained in:
Lu Chen
156
plugin/include/oemcrypto_interface.h
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156
plugin/include/oemcrypto_interface.h
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// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine Master
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// License Agreement.
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#ifndef OEMCRYPTO_INTERFACE_H
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#define OEMCRYPTO_INTERFACE_H
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#include <memory>
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#include <string>
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#include <vector>
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#include "OEMCryptoCAS.h"
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#include "crypto_key.h"
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namespace wvcas {
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// LoadKeysParams mirrors the parameters in the OEMCrypto API. It's purpose is
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// to allow OEMCrypto_LoadKeys to be mocked. OEMCrypto_LoadKeys takes 13
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// parameters as of API V14. GoogleMock allows a maximum of 10.
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struct LoadKeysParams {
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OEMCrypto_SESSION session = 0;
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const uint8_t* message = nullptr;
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size_t message_length = 0;
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const uint8_t* signature = nullptr;
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size_t signature_length = 0;
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OEMCrypto_Substring enc_mac_keys_iv = {};
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OEMCrypto_Substring enc_mac_keys = {};
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size_t num_keys = 0;
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const OEMCrypto_KeyObject* key_array = nullptr;
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OEMCrypto_Substring pst = {};
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OEMCrypto_Substring srm_requirement = {};
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OEMCrypto_LicenseType license_type = OEMCrypto_ContentLicense;
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};
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// InputStreamParams mirrors the parameters in OEMCrypto API. The
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// purpose is to allow OEMCrypto_Descramble to be mocked. OEMCrypto_Descramble
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// takes 11 parameters as of API V15. GoogleMock allows a maximum of 10.
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struct InputStreamParams {
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const uint8_t* data_addr;
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size_t data_length;
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bool is_encrypted;
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InputStreamParams(){};
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InputStreamParams(const uint8_t* data_addr, size_t data_length,
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bool is_encrypted):data_addr(data_addr), data_length(data_length),
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is_encrypted(is_encrypted){}
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};
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// Calls to oemcrypto are called via this object. The purpose of this object is
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// to allow OEMCrypto to be mocked. The implementation of this object only wraps
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// OEMCrypto methods adding limited additional functionality. Added
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// functionality is limited to adapt the input parameters to the oemcrypto api.
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// Method signatures in this class can only have a maximum of 10 parameters to
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// maintain compatibility with googlemock.
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class OEMCryptoInterface {
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public:
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OEMCryptoInterface();
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virtual ~OEMCryptoInterface();
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virtual OEMCryptoResult OEMCrypto_Initialize(void);
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virtual OEMCryptoResult OEMCrypto_Terminate(void);
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virtual OEMCryptoResult OEMCrypto_OpenSession(
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OEMCrypto_SESSION* session) const;
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virtual OEMCryptoResult OEMCrypto_CloseSession(
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OEMCrypto_SESSION session) const;
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virtual OEMCrypto_ProvisioningMethod OEMCrypto_GetProvisioningMethod() const;
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virtual OEMCryptoResult OEMCrypto_GetKeyData(uint8_t* keyData,
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size_t* keyDataLength) const;
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virtual uint32_t OEMCrypto_SupportedCertificates() const;
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virtual OEMCryptoResult OEMCrypto_GenerateNonce(OEMCrypto_SESSION session,
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uint32_t* nonce) const;
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virtual OEMCryptoResult OEMCrypto_GenerateDerivedKeys(
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OEMCrypto_SESSION session, const uint8_t* mac_key_context,
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uint32_t mac_key_context_length, const uint8_t* enc_key_context,
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uint32_t enc_key_context_length) const;
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virtual OEMCryptoResult OEMCrypto_PrepAndSignLicenseRequest(
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OEMCrypto_SESSION session, uint8_t* message, size_t message_length,
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size_t* core_message_size, uint8_t* signature,
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size_t* signature_length) const;
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virtual OEMCryptoResult OEMCrypto_PrepAndSignRenewalRequest(
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OEMCrypto_SESSION session, uint8_t* message, size_t message_length,
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size_t* core_message_size, uint8_t* signature,
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size_t* signature_length) const;
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virtual OEMCryptoResult OEMCrypto_PrepAndSignProvisioningRequest(
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OEMCrypto_SESSION session, uint8_t* message, size_t message_length,
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size_t* core_message_size, uint8_t* signature,
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size_t* signature_length) const;
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virtual OEMCryptoResult OEMCrypto_LoadProvisioning(
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OEMCrypto_SESSION session, const uint8_t* message, size_t message_length,
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size_t core_message_length, const uint8_t* signature,
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size_t signature_length, uint8_t* wrapped_private_key,
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size_t* wrapped_private_key_length) const;
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virtual OEMCryptoResult OEMCrypto_GetOEMPublicCertificate(
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OEMCrypto_SESSION session, uint8_t* public_cert,
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size_t* public_cert_length) const;
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virtual OEMCryptoResult OEMCrypto_LoadDRMPrivateKey(
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OEMCrypto_SESSION session, OEMCrypto_PrivateKeyType key_type,
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const uint8_t* wrapped_rsa_key, size_t wrapped_rsa_key_length) const;
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virtual OEMCryptoResult OEMCrypto_GenerateRSASignature(
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OEMCrypto_SESSION session, const uint8_t* message, size_t message_length,
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uint8_t* signature, size_t* signature_length,
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RSA_Padding_Scheme padding_scheme) const;
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virtual OEMCryptoResult OEMCrypto_DeriveKeysFromSessionKey(
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OEMCrypto_SESSION session, const uint8_t* enc_session_key,
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size_t enc_session_key_length, const uint8_t* mac_key_context,
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size_t mac_key_context_length, const uint8_t* enc_key_context,
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size_t enc_key_context_length) const;
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virtual OEMCryptoResult OEMCrypto_LoadKeys(
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const LoadKeysParams& load_key_params) const;
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virtual OEMCryptoResult OEMCrypto_LoadLicense(OEMCrypto_SESSION session,
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const uint8_t* message,
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size_t message_length,
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size_t core_message_length,
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const uint8_t* signature,
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size_t signature_length) const;
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virtual OEMCryptoResult OEMCrypto_LoadRenewal(OEMCrypto_SESSION session,
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const uint8_t* message,
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size_t message_length,
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size_t core_message_length,
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const uint8_t* signature,
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size_t signature_length) const;
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virtual OEMCryptoResult OEMCrypto_LoadCasECMKeys(
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OEMCrypto_SESSION session, const uint8_t* message, size_t message_length,
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const OEMCrypto_EntitledCasKeyObject* even_key,
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const OEMCrypto_EntitledCasKeyObject* odd_key) const;
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virtual OEMCryptoResult OEMCrypto_SelectKey(
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OEMCrypto_SESSION session, const uint8_t* content_key_id,
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size_t content_key_id_length, OEMCryptoCipherMode cipher_mode) const;
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virtual OEMCryptoResult OEMCrypto_GetHDCPCapability(
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OEMCrypto_HDCP_Capability* current, OEMCrypto_HDCP_Capability* max) const;
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virtual OEMCryptoResult OEMCrypto_RefreshKeys(
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OEMCrypto_SESSION session, const uint8_t* message, size_t message_length,
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const uint8_t* signature, size_t signature_length, size_t num_keys,
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const OEMCrypto_KeyRefreshObject* key_array);
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virtual OEMCryptoResult OEMCrypto_GetDeviceID(uint8_t* deviceID,
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size_t* idLength);
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virtual OEMCryptoResult OEMCrypto_LoadTestKeybox(const uint8_t* buffer,
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size_t length);
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virtual const char* OEMCrypto_SecurityLevel() const;
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virtual OEMCryptoResult OEMCrypto_CreateEntitledKeySession(
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OEMCrypto_SESSION oec_session, OEMCrypto_SESSION* key_session);
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virtual OEMCryptoResult OEMCrypto_RemoveEntitledKeySession(
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OEMCrypto_SESSION key_session);
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OEMCryptoInterface(const OEMCryptoInterface&) = delete;
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OEMCryptoInterface& operator=(const OEMCryptoInterface&) = delete;
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private:
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class Impl;
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std::unique_ptr<Impl> impl_;
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};
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} // namespace wvcas
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#endif // OEMCRYPTO_INTERFACE_H
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