48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
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// Copyright 2018 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "packager/media/base/aes_cryptor.h"
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#ifndef PACKAGER_MEDIA_CRYPTO_SAMPLE_AES_EC3_CRYPTOR_H_
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#define PACKAGER_MEDIA_CRYPTO_SAMPLE_AES_EC3_CRYPTOR_H_
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namespace shaka {
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namespace media {
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/// Implements SAMPLE-AES E-AC3 encryption / decryption per specification at:
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/// https://goo.gl/1sgcwY.
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class SampleAesEc3Cryptor : public AesCryptor {
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public:
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/// @param cryptor points to an AesCryptor instance which performs the actual
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/// encryption/decryption. Note that @a cryptor shall not use constant
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/// iv.
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explicit SampleAesEc3Cryptor(std::unique_ptr<AesCryptor> cryptor);
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/// @name AesCryptor implementation overrides.
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/// @{
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bool InitializeWithIv(const std::vector<uint8_t>& key,
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const std::vector<uint8_t>& iv) override;
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/// @}
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private:
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SampleAesEc3Cryptor(const SampleAesEc3Cryptor&) = delete;
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SampleAesEc3Cryptor& operator=(const SampleAesEc3Cryptor&) = delete;
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// AesCryptor implementation overrides.
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bool CryptInternal(const uint8_t* text,
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size_t text_size,
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uint8_t* crypt_text,
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size_t* crypt_text_size) override;
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void SetIvInternal() override;
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std::unique_ptr<AesCryptor> cryptor_;
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};
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} // namespace media
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} // namespace shaka
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#endif // PACKAGER_MEDIA_CRYPTO_SAMPLE_AES_EC3_CRYPTOR_H_
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