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< title > Shaka Packager SDK: packager/media/base/decryptor_source.cc Source File< / title >
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< div id = "projectname" > Shaka Packager SDK
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< li class = "navelem" > < a class = "el" href = "../../dir_3f8eec2fc361645de4b1ec14c19fffc7.html" > packager< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_f99dae54fe7170f791f339b952d5067a.html" > media< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_e3bda0bde998a4d5063328245b9909be.html" > base< / a > < / li > < / ul >
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< / div >
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< div class = "header" >
< div class = "headertitle" >
< div class = "title" > decryptor_source.cc< / div > < / div >
< / div > <!-- header -->
< div class = "contents" >
< div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright 2016 Google Inc. All rights reserved.< / span > < / div >
< div class = "line" > < a name = "l00002" > < / a > < span class = "lineno" > 2< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00003" > < / a > < span class = "lineno" > 3< / span >   < span class = "comment" > // Use of this source code is governed by a BSD-style< / span > < / div >
< div class = "line" > < a name = "l00004" > < / a > < span class = "lineno" > 4< / span >   < span class = "comment" > // license that can be found in the LICENSE file or at< / span > < / div >
< div class = "line" > < a name = "l00005" > < / a > < span class = "lineno" > 5< / span >   < span class = "comment" > // https://developers.google.com/open-source/licenses/bsd< / span > < / div >
< div class = "line" > < a name = "l00006" > < / a > < span class = "lineno" > 6< / span >   < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "preprocessor" > #include " packager/media/base/decryptor_source.h" < / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "preprocessor" > #include " packager/base/logging.h" < / span > < / div >
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< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " packager/media/base/aes_decryptor.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #include " packager/media/base/aes_pattern_cryptor.h" < / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < / div >
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< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "comment" > // Return true if [encrypted_buffer, encrypted_buffer + buffer_size) overlaps< / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "comment" > // with [decrypted_buffer, decrypted_buffer + buffer_size).< / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "keywordtype" > bool< / span > CheckMemoryOverlap(< span class = "keyword" > const< / span > uint8_t* encrypted_buffer,< / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "keywordtype" > size_t< / span > buffer_size,< / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   uint8_t* decrypted_buffer) {< / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "keywordflow" > return< / span > (decrypted_buffer < encrypted_buffer)< / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   ? (encrypted_buffer < decrypted_buffer + buffer_size)< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   : (decrypted_buffer < encrypted_buffer + buffer_size);< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   }< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < span class = "keyword" > namespace < / span > shaka {< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "keyword" > namespace < / span > media {< / div >
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< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < / div >
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< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > < a class = "line" href = "../../d7/d59/classshaka_1_1media_1_1DecryptorSource.html#a045c97bdeb9996d6003ac926849880c8" > 28< / a > < / span >   < a class = "code" href = "../../d7/d59/classshaka_1_1media_1_1DecryptorSource.html#a045c97bdeb9996d6003ac926849880c8" > DecryptorSource::DecryptorSource< / a > (< a class = "code" href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html" > KeySource< / a > * key_source)< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   : key_source_(key_source) {< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   CHECK(key_source);< / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   }< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   DecryptorSource::~DecryptorSource() {}< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > < a class = "line" href = "../../d7/d59/classshaka_1_1media_1_1DecryptorSource.html#a8a1bd6a5a63b3f3c54028b43dfc67a6d" > 34< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "../../d7/d59/classshaka_1_1media_1_1DecryptorSource.html#a8a1bd6a5a63b3f3c54028b43dfc67a6d" > DecryptorSource::DecryptSampleBuffer< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "../../de/d49/classshaka_1_1media_1_1DecryptConfig.html" > DecryptConfig< / a > * decrypt_config,< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keyword" > const< / span > uint8_t* encrypted_buffer,< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keywordtype" > size_t< / span > buffer_size,< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   uint8_t* decrypted_buffer) {< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   DCHECK(decrypt_config);< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   DCHECK(encrypted_buffer);< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   DCHECK(decrypted_buffer);< / div >
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "keywordflow" > if< / span > (CheckMemoryOverlap(encrypted_buffer, buffer_size, decrypted_buffer)) {< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Encrypted buffer and decrypted buffer cannot overlap." < / span > ;< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   }< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   < span class = "comment" > // Get the decryptor object.< / span > < / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < a class = "code" href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html" > AesCryptor< / a > * decryptor = < span class = "keyword" > nullptr< / span > ;< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "keyword" > auto< / span > found = decryptor_map_.find(decrypt_config-> key_id());< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keywordflow" > if< / span > (found == decryptor_map_.end()) {< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "comment" > // Create new AesDecryptor based on decryption mode.< / span > < / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < a class = "code" href = "../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > key;< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > status(key_source_-> < a class = "code" href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html#af56c833453d65297c4dc96c9d2f83e1a" > GetKey< / a > (decrypt_config-> key_id(), & key));< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "keywordflow" > if< / span > (!status.ok()) {< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Error retrieving decryption key: " < / span > < < status;< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   }< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   std::unique_ptr< AesCryptor> aes_decryptor;< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keywordflow" > switch< / span > (decrypt_config-> protection_scheme()) {< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keywordflow" > case< / span > FOURCC_cenc:< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   aes_decryptor.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d0/dd8/classshaka_1_1media_1_1AesCtrEncryptor.html" > AesCtrDecryptor< / a > );< / div >
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< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keywordflow" > break< / span > ;< / div >
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< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < span class = "keywordflow" > case< / span > FOURCC_cbc1:< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   aes_decryptor.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../df/d2d/classshaka_1_1media_1_1AesCbcDecryptor.html" > AesCbcDecryptor< / a > (kNoPadding));< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "keywordflow" > case< / span > FOURCC_cens:< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   aes_decryptor.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html" > AesPatternCryptor< / a > (< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   decrypt_config-> crypt_byte_block(),< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   decrypt_config-> skip_byte_block(),< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < a class = "code" href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html#a54fd35d7782d3b4948c7eb68387711f0a76b19d202e22b2b0f661f933b47b3b16" > AesPatternCryptor::kEncryptIfCryptByteBlockRemaining< / a > ,< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   AesCryptor::kDontUseConstantIv,< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   std::unique_ptr< AesCryptor> (< span class = "keyword" > new< / span > < a class = "code" href = "../../d0/dd8/classshaka_1_1media_1_1AesCtrEncryptor.html" > AesCtrDecryptor< / a > ())));< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "keywordflow" > case< / span > FOURCC_cbcs:< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   aes_decryptor.reset(< span class = "keyword" > new< / span > < a class = "code" href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html" > AesPatternCryptor< / a > (< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   decrypt_config-> crypt_byte_block(),< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   decrypt_config-> skip_byte_block(),< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < a class = "code" href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html#a54fd35d7782d3b4948c7eb68387711f0a76b19d202e22b2b0f661f933b47b3b16" > AesPatternCryptor::kEncryptIfCryptByteBlockRemaining< / a > ,< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   AesCryptor::kUseConstantIv,< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   std::unique_ptr< AesCryptor> (< span class = "keyword" > new< / span > < a class = "code" href = "../../df/d2d/classshaka_1_1media_1_1AesCbcDecryptor.html" > AesCbcDecryptor< / a > (kNoPadding))));< / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Unsupported protection scheme: " < / span > < / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < < decrypt_config-> protection_scheme();< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   }< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "keywordflow" > if< / span > (!aes_decryptor-> InitializeWithIv(key.key, decrypt_config-> iv())) {< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Failed to initialize AesDecryptor for decryption." < / span > ;< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   }< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   decryptor = aes_decryptor.get();< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   decryptor_map_[decrypt_config-> key_id()] = std::move(aes_decryptor);< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   decryptor = found-> second.get();< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   }< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keywordflow" > if< / span > (!decryptor-> < a class = "code" href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a4875146da4761bb757d6b00132ae6fea" > SetIv< / a > (decrypt_config-> iv())) {< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Invalid initialization vector." < / span > ;< / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   }< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "keywordflow" > if< / span > (decrypt_config-> subsamples().empty()) {< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < span class = "comment" > // Sample not encrypted using subsample encryption. Decrypt whole.< / span > < / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "keywordflow" > if< / span > (!decryptor-> Crypt(encrypted_buffer, buffer_size, decrypted_buffer)) {< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Error during bulk sample decryption." < / span > ;< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   }< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   }< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "comment" > // Subsample decryption.< / span > < / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "keyword" > const< / span > std::vector< SubsampleEntry> & subsamples = decrypt_config-> subsamples();< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < span class = "keyword" > const< / span > uint8_t* current_ptr = encrypted_buffer;< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keyword" > const< / span > uint8_t* < span class = "keyword" > const< / span > buffer_end = encrypted_buffer + buffer_size;< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > auto< / span > & subsample : subsamples) {< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < span class = "keywordflow" > if< / span > ((current_ptr + subsample.clear_bytes + subsample.cipher_bytes) > < / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   buffer_end) {< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Subsamples overflow sample buffer." < / span > ;< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   }< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   memcpy(decrypted_buffer, current_ptr, subsample.clear_bytes);< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   current_ptr += subsample.clear_bytes;< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   decrypted_buffer += subsample.clear_bytes;< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < span class = "keywordflow" > if< / span > (!decryptor-> Crypt(current_ptr, subsample.cipher_bytes,< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   decrypted_buffer)) {< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Error decrypting subsample buffer." < / span > ;< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   }< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   current_ptr += subsample.cipher_bytes;< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   decrypted_buffer += subsample.cipher_bytes;< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   }< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   }< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1AesCryptor_html" > < div class = "ttname" > < a href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html" > shaka::media::AesCryptor< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d0/d42/aes__cryptor_8h_source.html#l00025" > aes_cryptor.h:25< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1DecryptorSource_html_a045c97bdeb9996d6003ac926849880c8" > < div class = "ttname" > < a href = "../../d7/d59/classshaka_1_1media_1_1DecryptorSource.html#a045c97bdeb9996d6003ac926849880c8" > shaka::media::DecryptorSource::DecryptorSource< / a > < / div > < div class = "ttdeci" > DecryptorSource(KeySource *key_source)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d2a/decryptor__source_8cc_source.html#l00028" > decryptor_source.cc:28< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1DecryptConfig_html" > < div class = "ttname" > < a href = "../../de/d49/classshaka_1_1media_1_1DecryptConfig.html" > shaka::media::DecryptConfig< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../df/dad/decrypt__config_8h_source.html#l00040" > decrypt_config.h:40< / a > < / div > < / div >
2017-06-15 18:19:40 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1KeySource_html_af56c833453d65297c4dc96c9d2f83e1a" > < div class = "ttname" > < a href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html#af56c833453d65297c4dc96c9d2f83e1a" > shaka::media::KeySource::GetKey< / a > < / div > < div class = "ttdeci" > virtual Status GetKey(const std::string & stream_label, EncryptionKey *key)=0< / div > < / div >
2017-10-24 22:51:02 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1AesCbcDecryptor_html" > < div class = "ttname" > < a href = "../../df/d2d/classshaka_1_1media_1_1AesCbcDecryptor.html" > shaka::media::AesCbcDecryptor< / a > < / div > < div class = "ttdoc" > Class which implements AES-CBC (Cipher block chaining) decryption. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/d4d/aes__decryptor_8h_source.html#l00025" > aes_decryptor.h:25< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1DecryptorSource_html_a8a1bd6a5a63b3f3c54028b43dfc67a6d" > < div class = "ttname" > < a href = "../../d7/d59/classshaka_1_1media_1_1DecryptorSource.html#a8a1bd6a5a63b3f3c54028b43dfc67a6d" > shaka::media::DecryptorSource::DecryptSampleBuffer< / a > < / div > < div class = "ttdeci" > bool DecryptSampleBuffer(const DecryptConfig *decrypt_config, const uint8_t *encrypted_buffer, size_t buffer_size, uint8_t *decrypted_buffer)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d2a/decryptor__source_8cc_source.html#l00034" > decryptor_source.cc:34< / a > < / div > < / div >
2016-08-19 00:58:26 +00:00
< div class = "ttc" id = "classshaka_1_1media_1_1AesPatternCryptor_html_a54fd35d7782d3b4948c7eb68387711f0a76b19d202e22b2b0f661f933b47b3b16" > < div class = "ttname" > < a href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html#a54fd35d7782d3b4948c7eb68387711f0a76b19d202e22b2b0f661f933b47b3b16" > shaka::media::AesPatternCryptor::kEncryptIfCryptByteBlockRemaining< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d09/aes__pattern__cryptor_8h_source.html#l00026" > aes_pattern_cryptor.h:26< / a > < / div > < / div >
2017-10-24 22:51:02 +00:00
< div class = "ttc" id = "classshaka_1_1Status_html" > < div class = "ttname" > < a href = "../../d2/d20/classshaka_1_1Status.html" > shaka::Status< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d13/status_8h_source.html#l00110" > status.h:110< / a > < / div > < / div >
< div class = "ttc" id = "structshaka_1_1media_1_1EncryptionKey_html" > < div class = "ttname" > < a href = "../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html" > shaka::media::EncryptionKey< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/d3f/key__source_8h_source.html#l00034" > key_source.h:34< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1AesPatternCryptor_html" > < div class = "ttname" > < a href = "../../d3/dfe/classshaka_1_1media_1_1AesPatternCryptor.html" > shaka::media::AesPatternCryptor< / a > < / div > < div class = "ttdoc" > Implements pattern-based encryption/decryption. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d09/aes__pattern__cryptor_8h_source.html#l00017" > aes_pattern_cryptor.h:17< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1AesCtrEncryptor_html" > < div class = "ttname" > < a href = "../../d0/dd8/classshaka_1_1media_1_1AesCtrEncryptor.html" > shaka::media::AesCtrEncryptor< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/df0/aes__encryptor_8h_source.html#l00042" > aes_encryptor.h:42< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1AesCryptor_html_a4875146da4761bb757d6b00132ae6fea" > < div class = "ttname" > < a href = "../../df/d87/classshaka_1_1media_1_1AesCryptor.html#a4875146da4761bb757d6b00132ae6fea" > shaka::media::AesCryptor::SetIv< / a > < / div > < div class = "ttdeci" > bool SetIv(const std::vector< uint8_t > & iv)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d55/aes__cryptor_8cc_source.html#l00067" > aes_cryptor.cc:67< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1KeySource_html" > < div class = "ttname" > < a href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html" > shaka::media::KeySource< / a > < / div > < div class = "ttdoc" > KeySource is responsible for encryption key acquisition. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/d3f/key__source_8h_source.html#l00045" > key_source.h:45< / a > < / div > < / div >
2016-01-22 17:33:52 +00:00
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2017-10-24 22:51:02 +00:00
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