368c72374e
This allows code calling the library can choose an arbitrary encryption algorithm. Decoder control parameter VP8_SET_DECRYPT_KEY is renamed to VP8D_SET_DECRYPTOR, and now takes an small config struct instead of just a byte array. Change-Id: I0462b3388d8d45057e4f79a6b6777fe713dc546e
72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
/*
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* Copyright (c) 2013 The WebM 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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#include <cstdio>
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#include <cstdlib>
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#include <string>
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#include <vector>
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "test/codec_factory.h"
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#include "test/ivf_video_source.h"
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namespace {
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// In a real use the 'decrypt_state' parameter will be a pointer to a struct
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// with whatever internal state the decryptor uses. For testing we'll just
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// xor with a constant key, and decrypt_state will point to the start of
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// the original buffer.
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const uint8_t test_key[16] = {
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0x01, 0x12, 0x23, 0x34, 0x45, 0x56, 0x67, 0x78,
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0x89, 0x9a, 0xab, 0xbc, 0xcd, 0xde, 0xef, 0xf0
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};
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void encrypt_buffer(const uint8_t *src, uint8_t *dst, int size, int offset = 0) {
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for (int i = 0; i < size; ++i) {
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dst[i] = src[i] ^ test_key[(offset + i) & 15];
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}
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}
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void test_decrypt_cb(void *decrypt_state, const uint8_t *input,
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uint8_t *output, int count) {
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encrypt_buffer(input, output, count, input - (uint8_t *)decrypt_state);
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}
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} // namespace
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namespace libvpx_test {
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TEST(TestDecrypt, DecryptWorks) {
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libvpx_test::IVFVideoSource video("vp80-00-comprehensive-001.ivf");
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video.Init();
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vpx_codec_dec_cfg_t dec_cfg = {0};
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VP8Decoder decoder(dec_cfg, 0);
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video.Begin();
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// no decryption
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vpx_codec_err_t res = decoder.DecodeFrame(video.cxdata(), video.frame_size());
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ASSERT_EQ(VPX_CODEC_OK, res) << decoder.DecodeError();
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// decrypt frame
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video.Next();
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#if CONFIG_DECRYPT
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std::vector<uint8_t> encrypted(video.frame_size());
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encrypt_buffer(video.cxdata(), &encrypted[0], video.frame_size());
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vp8_decrypt_init di = { test_decrypt_cb, &encrypted[0] };
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decoder.Control(VP8D_SET_DECRYPTOR, &di);
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#endif // CONFIG_DECRYPT
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res = decoder.DecodeFrame(video.cxdata(), video.frame_size());
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ASSERT_EQ(VPX_CODEC_OK, res) << decoder.DecodeError();
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}
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} // namespace libvpx_test
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