77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
// 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 WVCDM_CORE_CONTENT_KEY_SESSSION_H_
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#define WVCDM_CORE_CONTENT_KEY_SESSSION_H_
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#include "key_session.h"
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#include "metrics_collections.h"
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#include "override.h"
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#include "timer_metric.h"
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namespace wvcdm {
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class ContentKeySession : public KeySession {
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public:
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ContentKeySession(CryptoSessionId oec_session_id,
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metrics::CryptoMetrics* metrics)
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: KeySession(metrics),
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oec_session_id_(oec_session_id),
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cipher_mode_(kCipherModeCtr) {}
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virtual ~ContentKeySession() {}
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virtual KeySessionType Type() OVERRIDE { return kDefault; }
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// Generate Derived Keys for ContentKeySession
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virtual bool GenerateDerivedKeys(const std::string& message) OVERRIDE;
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// Generate Derived Keys (from session key) for ContentKeySession
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virtual bool GenerateDerivedKeys(const std::string& message,
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const std::string& session_key) OVERRIDE;
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// Load Keys for ContentKeySession
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virtual OEMCryptoResult LoadKeys(const std::string& message,
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const std::string& signature,
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const std::string& mac_key_iv,
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const std::string& mac_key,
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const std::vector<CryptoKey>& keys,
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const std::string& provider_session_token,
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CdmCipherMode* cipher_mode,
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const std::string& srm_requirement) OVERRIDE;
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virtual OEMCryptoResult LoadEntitledContentKeys(
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const std::vector<CryptoKey>&) OVERRIDE {
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return OEMCrypto_ERROR_INVALID_CONTEXT;
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}
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// Select Key for ContentKeySession
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virtual OEMCryptoResult SelectKey(const std::string& key_id,
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CdmCipherMode cipher_mode) OVERRIDE;
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// Decrypt for ContentKeySession
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virtual OEMCryptoResult Decrypt(
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const CdmDecryptionParameters& params,
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OEMCrypto_DestBufferDesc& buffer_descriptor,
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OEMCrypto_CENCEncryptPatternDesc& pattern_descriptor) OVERRIDE;
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protected:
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virtual OEMCryptoResult LoadKeysAsLicenseType(
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const std::string& message, const std::string& signature,
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const std::string& mac_key_iv, const std::string& mac_key,
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const std::vector<CryptoKey>& keys,
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const std::string& provider_session_token, CdmCipherMode* cipher_mode,
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const std::string& srm_requirement,
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OEMCrypto_LicenseType license_type);
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CryptoSessionId oec_session_id_;
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private:
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KeyId cached_key_id_;
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CdmCipherMode cipher_mode_;
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};
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} // namespace wvcdm
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#endif // WVCDM_CORE_CONTENT_KEY_SESSSION_H_
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