70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
/*
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* Copyright 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_TEST_FAKE_FRAME_ENCRYPTOR_H_
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#define API_TEST_FAKE_FRAME_ENCRYPTOR_H_
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#include <stddef.h>
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#include <stdint.h>
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#include "api/array_view.h"
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#include "api/crypto/frame_encryptor_interface.h"
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#include "api/media_types.h"
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#include "rtc_base/ref_counted_object.h"
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namespace webrtc {
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// The FakeFrameEncryptor is a TEST ONLY fake implementation of the
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// FrameEncryptorInterface. It is constructed with a simple single digit key and
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// a fixed postfix byte. This is just to validate that the core code works
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// as expected.
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class FakeFrameEncryptor
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: public rtc::RefCountedObject<FrameEncryptorInterface> {
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public:
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// Provide a key (0,255) and some postfix byte (0,255).
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explicit FakeFrameEncryptor(uint8_t fake_key = 0xAA,
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uint8_t postfix_byte = 255);
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// Simply xors each payload with the provided fake key and adds the postfix
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// bit to the end. This will always fail if fail_encryption_ is set to true.
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int Encrypt(cricket::MediaType media_type,
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uint32_t ssrc,
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rtc::ArrayView<const uint8_t> additional_data,
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rtc::ArrayView<const uint8_t> frame,
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rtc::ArrayView<uint8_t> encrypted_frame,
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size_t* bytes_written) override;
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// Always returns 1 more than the size of the frame.
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size_t GetMaxCiphertextByteSize(cricket::MediaType media_type,
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size_t frame_size) override;
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// Sets the fake key to use during encryption.
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void SetFakeKey(uint8_t fake_key);
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// Returns the fake key used during encryption.
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uint8_t GetFakeKey() const;
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// Set the postfix byte to use.
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void SetPostfixByte(uint8_t expected_postfix_byte);
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// Return a postfix byte added to each outgoing payload.
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uint8_t GetPostfixByte() const;
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// Force all encryptions to fail.
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void SetFailEncryption(bool fail_encryption);
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enum class FakeEncryptionStatus : int {
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OK = 0,
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FORCED_FAILURE = 1,
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};
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private:
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uint8_t fake_key_ = 0;
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uint8_t postfix_byte_ = 0;
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bool fail_encryption_ = false;
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};
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} // namespace webrtc
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#endif // API_TEST_FAKE_FRAME_ENCRYPTOR_H_
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