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< title > Shaka Packager SDK: packager/media/crypto/encryption_handler.h Source File< / title >
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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_aa847bee70cdde822696c7e33a504139.html" > crypto< / a > < / li > < / ul >
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< div class = "title" > encryption_handler.h< / div > < / div >
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< div class = "fragment" > < div class = "line" > < a name = "l00001" > < / a > < span class = "lineno" > 1< / span >   < span class = "comment" > // Copyright 2017 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" > #ifndef PACKAGER_MEDIA_CRYPTO_ENCRYPTION_HANDLER_H_< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "preprocessor" > #define PACKAGER_MEDIA_CRYPTO_ENCRYPTION_HANDLER_H_< / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " packager/media/base/key_source.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "preprocessor" > #include " packager/media/base/media_handler.h" < / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "preprocessor" > #include " packager/media/public/crypto_params.h" < / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "keyword" > namespace < / span > < a class = "code" href = "../../d8/daf/namespaceshaka.html" > shaka< / a > {< / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "keyword" > class < / span > AesCryptor;< / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "keyword" > class < / span > AesEncryptorFactory;< / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "keyword" > class < / span > SubsampleGenerator;< / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "keyword" > struct < / span > EncryptionKey;< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > < a class = "line" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > 22< / a > < / span >   < span class = "keyword" > class < / span > < a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > EncryptionHandler< / a > : < span class = "keyword" > public< / span > < a class = "code" href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html" > MediaHandler< / a > {< / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "keyword" > public< / span > :< / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > EncryptionHandler< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "../../dc/da0/structshaka_1_1EncryptionParams.html" > EncryptionParams< / a > & encryption_params,< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < a class = "code" href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html" > KeySource< / a > * key_source);< / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   ~< a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > EncryptionHandler< / a > () < span class = "keyword" > override< / span > ;< / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < span class = "keyword" > protected< / span > :< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > < a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html#a3f1808a4386081e5e1c9a798a1a69dd0" > InitializeInternal< / a > () < span class = "keyword" > override< / span > ;< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > < a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html#a7887e6060eb572036674ecb9a7e045c4" > Process< / a > (std::unique_ptr< StreamData> stream_data) < span class = "keyword" > override< / span > ;< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keyword" > private< / span > :< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "keyword" > friend< / span > < span class = "keyword" > class < / span > EncryptionHandlerTest;< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > EncryptionHandler< / a > (< span class = "keyword" > const< / span > < a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > EncryptionHandler< / a > & ) = < span class = "keyword" > delete< / span > ;< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > EncryptionHandler< / a > & operator=(< span class = "keyword" > const< / span > < a class = "code" href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > EncryptionHandler< / a > & ) = < span class = "keyword" > delete< / span > ;< / 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 = "comment" > // Processes |stream_info| and sets up stream specific variables.< / span > < / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > ProcessStreamInfo(< span class = "keyword" > const< / span > < a class = "code" href = "../../d5/db1/classshaka_1_1media_1_1StreamInfo.html" > StreamInfo< / a > & stream_info);< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < span class = "comment" > // Processes media sample and encrypts it if needed.< / span > < / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < a class = "code" href = "../../d2/d20/classshaka_1_1Status.html" > Status< / a > ProcessMediaSample(std::shared_ptr< const MediaSample> clear_sample);< / 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 = "keywordtype" > void< / span > SetupProtectionPattern(StreamType stream_type);< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < span class = "keywordtype" > bool< / span > CreateEncryptor(< span class = "keyword" > const< / span > < a class = "code" href = "../../dd/dbd/structshaka_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > & encryption_key);< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   < span class = "comment" > // Encrypt an E-AC3 frame with size |source_size| according to SAMPLE-AES< / span > < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "comment" > // specification. |dest| should have at least |source_size| bytes.< / span > < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "keywordtype" > bool< / span > SampleAesEncryptEac3Frame(< span class = "keyword" > const< / span > uint8_t* source,< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "keywordtype" > size_t< / span > source_size,< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   uint8_t* dest);< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "comment" > // Encrypt an array with size |source_size|. |dest| should have at< / span > < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "comment" > // least |source_size| bytes.< / span > < / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordtype" > void< / span > EncryptBytes(< span class = "keyword" > const< / span > uint8_t* source, < span class = "keywordtype" > size_t< / span > source_size, uint8_t* dest);< / 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 >   < span class = "comment" > // An E-AC3 frame comprises of one or more syncframes. This function extracts< / span > < / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "comment" > // the syncframe sizes from the source bytes.< / span > < / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "comment" > // Returns false if the frame is not well formed.< / span > < / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   < span class = "keywordtype" > bool< / span > ExtractEac3SyncframeSizes(< span class = "keyword" > const< / span > uint8_t* source,< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < span class = "keywordtype" > size_t< / span > source_size,< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   std::vector< size_t> * syncframe_sizes);< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   < / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < span class = "comment" > // Testing injections.< / span > < / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "keywordtype" > void< / span > InjectSubsampleGeneratorForTesting(< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   std::unique_ptr< SubsampleGenerator> generator);< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < span class = "keywordtype" > void< / span > InjectEncryptorFactoryForTesting(< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   std::unique_ptr< AesEncryptorFactory> encryptor_factory);< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "keyword" > const< / span > < a class = "code" href = "../../dc/da0/structshaka_1_1EncryptionParams.html" > EncryptionParams< / a > encryption_params_;< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "keyword" > const< / span > FourCC protection_scheme_ = FOURCC_NULL;< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < a class = "code" href = "../../d1/d1f/classshaka_1_1media_1_1KeySource.html" > KeySource< / a > * key_source_ = < span class = "keyword" > nullptr< / span > ;< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   std::string stream_label_;< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   < span class = "comment" > // Current encryption config and encryptor.< / span > < / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   std::shared_ptr< EncryptionConfig> encryption_config_;< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   std::unique_ptr< AesCryptor> encryptor_;< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   Codec codec_ = kUnknownCodec;< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < span class = "comment" > // Remaining clear lead in the stream' s time scale.< / span > < / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   int64_t remaining_clear_lead_ = 0;< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < span class = "comment" > // Crypto period duration in the stream' s time scale.< / span > < / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   uint64_t crypto_period_duration_ = 0;< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < span class = "comment" > // Previous crypto period index if key rotation is enabled.< / span > < / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   int64_t prev_crypto_period_index_ = -1;< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "keywordtype" > bool< / span > check_new_crypto_period_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   std::unique_ptr< SubsampleGenerator> subsample_generator_;< / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   std::unique_ptr< AesEncryptorFactory> encryptor_factory_;< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "comment" > // Number of encrypted blocks (16-byte-block) in pattern based encryption.< / span > < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   uint8_t crypt_byte_block_ = 0;< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   uint8_t skip_byte_block_ = 0;< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   };< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   } < span class = "comment" > // namespace shaka< / span > < / 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 = "preprocessor" > #endif < / span > < span class = "comment" > // PACKAGER_MEDIA_CRYPTO_ENCRYPTION_HANDLER_H_< / span > < / div >
< div class = "ttc" id = "aclassshaka_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 = "aclassshaka_1_1media_1_1EncryptionHandler_html" > < div class = "ttname" > < a href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html" > shaka::media::EncryptionHandler< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dd/dbc/encryption__handler_8h_source.html#l00022" > encryption_handler.h:22< / a > < / div > < / div >
< div class = "ttc" id = "aclassshaka_1_1media_1_1EncryptionHandler_html_a3f1808a4386081e5e1c9a798a1a69dd0" > < div class = "ttname" > < a href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html#a3f1808a4386081e5e1c9a798a1a69dd0" > shaka::media::EncryptionHandler::InitializeInternal< / a > < / div > < div class = "ttdeci" > Status InitializeInternal() override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d9c/encryption__handler_8cc_source.html#l00175" > encryption_handler.cc:175< / a > < / div > < / div >
< div class = "ttc" id = "aclassshaka_1_1media_1_1EncryptionHandler_html_a7887e6060eb572036674ecb9a7e045c4" > < div class = "ttname" > < a href = "../../d6/d4c/classshaka_1_1media_1_1EncryptionHandler.html#a7887e6060eb572036674ecb9a7e045c4" > shaka::media::EncryptionHandler::Process< / a > < / div > < div class = "ttdeci" > Status Process(std::unique_ptr< StreamData > stream_data) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d9c/encryption__handler_8cc_source.html#l00186" > encryption_handler.cc:186< / a > < / div > < / div >
< div class = "ttc" id = "aclassshaka_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#l00051" > key_source.h:51< / a > < / div > < / div >
< div class = "ttc" id = "aclassshaka_1_1media_1_1MediaHandler_html" > < div class = "ttname" > < a href = "../../da/dfd/classshaka_1_1media_1_1MediaHandler.html" > shaka::media::MediaHandler< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d93/media__handler_8h_source.html#l00154" > media_handler.h:154< / a > < / div > < / div >
< div class = "ttc" id = "aclassshaka_1_1media_1_1StreamInfo_html" > < div class = "ttname" > < a href = "../../d5/db1/classshaka_1_1media_1_1StreamInfo.html" > shaka::media::StreamInfo< / a > < / div > < div class = "ttdoc" > Abstract class holds stream information.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d8/daa/stream__info_8h_source.html#l00065" > stream_info.h:65< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceshaka_html" > < div class = "ttname" > < a href = "../../d8/daf/namespaceshaka.html" > shaka< / a > < / div > < div class = "ttdoc" > All the methods that are virtual are virtual for mocking.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011" > gflags_hex_bytes.cc:11< / a > < / div > < / div >
< div class = "ttc" id = "astructshaka_1_1EncryptionParams_html" > < div class = "ttname" > < a href = "../../dc/da0/structshaka_1_1EncryptionParams.html" > shaka::EncryptionParams< / a > < / div > < div class = "ttdoc" > Encryption parameters.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dd/d58/crypto__params_8h_source.html#l00146" > crypto_params.h:146< / a > < / div > < / div >
< div class = "ttc" id = "astructshaka_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#l00038" > key_source.h:38< / a > < / div > < / div >
2017-02-11 01:23:57 +00:00
< / div > <!-- fragment --> < / div > <!-- contents -->
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2021-06-11 04:44:53 +00:00
Generated on Thu Jun 10 2021 21:44:25 for Shaka Packager SDK by  < a href = "https://www.doxygen.org/index.html" > < img class = "footer" src = "../../doxygen.svg" width = "104" height = "31" alt = "doxygen" / > < / a > 1.9.1
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