e6c3966530
BUG=163 R=phoglund@webrtc.org Review URL: https://webrtc-codereview.appspot.com/1907004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4428 4adac7df-926f-26a2-2b94-8c16560cd09d
66 lines
2.4 KiB
C++
66 lines
2.4 KiB
C++
/*
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* Copyright (c) 2012 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 SRC_VIDEO_ENGINE_TEST_AUTO_TEST_HELPERS_RANDOM_ENCRYPTION_H_
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#define SRC_VIDEO_ENGINE_TEST_AUTO_TEST_HELPERS_RANDOM_ENCRYPTION_H_
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#include "webrtc/common_types.h"
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// These algorithms attempt to create an uncrackable encryption
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// scheme by completely disregarding the input data.
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class RandomEncryption : public webrtc::Encryption {
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public:
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explicit RandomEncryption(unsigned int rand_seed);
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virtual void encrypt(int channel_no,
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unsigned char* in_data,
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unsigned char* out_data,
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int bytes_in,
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int* bytes_out) OVERRIDE {
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GenerateRandomData(out_data, bytes_in, bytes_out);
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}
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virtual void decrypt(int channel_no,
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unsigned char* in_data,
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unsigned char* out_data,
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int bytes_in,
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int* bytes_out) OVERRIDE {
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GenerateRandomData(out_data, bytes_in, bytes_out);
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}
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virtual void encrypt_rtcp(int channel_no,
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unsigned char* in_data,
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unsigned char* out_data,
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int bytes_in,
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int* bytes_out) OVERRIDE {
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GenerateRandomData(out_data, bytes_in, bytes_out);
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}
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virtual void decrypt_rtcp(int channel_no,
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unsigned char* in_data,
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unsigned char* out_data,
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int bytes_in,
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int* bytes_out) OVERRIDE {
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GenerateRandomData(out_data, bytes_in, bytes_out);
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}
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private:
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// Generates some completely random data with roughly the right length.
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void GenerateRandomData(unsigned char* out_data,
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int bytes_in,
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int* bytes_out);
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// Makes up a length within +- 50 of the original length, without
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// overstepping the contract for encrypt / decrypt.
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int MakeUpSimilarLength(int original_length);
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};
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#endif // SRC_VIDEO_ENGINE_TEST_AUTO_TEST_HELPERS_RANDOM_ENCRYPTION_H_
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