2016-03-21 19:14:00 +00:00
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< li class = "navelem" > < a class = "el" href = "../../dir_39dc0668bd5a501998f94e8b4e546c71.html" > media< / a > < / li > < li class = "navelem" > < a class = "el" href = "../../dir_c6ada2450b25ab5438a4dba6c9b890af.html" > base< / a > < / li > < / ul >
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< div class = "title" > fixed_key_source.cc< / div > < / div >
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< 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/fixed_key_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 >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "preprocessor" > #include " packager/base/strings/string_number_conversions.h" < / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "keyword" > namespace < / span > edash_packager {< / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "keyword" > namespace < / span > media {< / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "comment" > // Common SystemID defined by EME, which requires Key System implementations< / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "comment" > // supporting ISO Common Encryption to support this SystemID and format.< / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "comment" > // http://goo.gl/PHZDAF< / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "keyword" > const< / span > uint8_t kCommonSystemId[] = {0x10, 0x77, 0xef, 0xec, 0xc0, 0xb2,< / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   0x4d, 0x02, 0xac, 0xe3, 0x3c, 0x1e,< / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   0x52, 0xe2, 0xfb, 0x4b};< / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   FixedKeySource::~FixedKeySource() {}< / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > < a class = "line" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af8d99a5165eabd51b9c7b908bad6c8e6" > 26< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af8d99a5165eabd51b9c7b908bad6c8e6" > FixedKeySource::FetchKeys< / a > (< span class = "keyword" > const< / span > std::vector< uint8_t> & pssh_box) {< / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "comment" > // Do nothing for fixed key encryption/decryption.< / span > < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   }< / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > < a class = "line" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af2dfa2579683634b3934dac2df5aa2bd" > 31< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af8d99a5165eabd51b9c7b908bad6c8e6" > FixedKeySource::FetchKeys< / a > (< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "keyword" > const< / span > std::vector< std::vector< uint8_t> > & key_ids) {< / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "comment" > // Do nothing for fixed key encryption/decryption.< / span > < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / 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 >   < / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > < a class = "line" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a545a4cfd54555f6f41c3be9a10b63c65" > 37< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af8d99a5165eabd51b9c7b908bad6c8e6" > FixedKeySource::FetchKeys< / a > (uint32_t asset_id) {< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "comment" > // Do nothing for fixed key encryption/decryption.< / span > < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / 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" > < a class = "line" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a588ebb1c3984ffbeca897273bb7931dc" > 42< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a588ebb1c3984ffbeca897273bb7931dc" > FixedKeySource::GetKey< / a > (TrackType track_type, < a class = "code" href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > * key) {< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   DCHECK(key);< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   *key = *encryption_key_;< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00047" > < / a > < span class = "lineno" > 47< / span >   }< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   < / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > < a class = "line" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a278e8f642c3e6be2b55830c8762bc330" > 49< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a588ebb1c3984ffbeca897273bb7931dc" > FixedKeySource::GetKey< / a > (< span class = "keyword" > const< / span > std::vector< uint8_t> & key_id,< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < a class = "code" href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > * key) {< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   DCHECK(key);< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   DCHECK(encryption_key_);< / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "keywordflow" > if< / span > (key_id != encryption_key_-> key_id) {< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "keywordflow" > return< / span > < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > (error::NOT_FOUND,< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   std::string(< span class = "stringliteral" > " Key for key ID " < / span > ) +< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   base::HexEncode(& key_id[0], key_id.size()) +< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "stringliteral" > " was not found." < / 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 >   *key = *encryption_key_;< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   }< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > < a class = "line" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a109d8adf6eaf0e85d46358ffa9b5e2d8" > 63< / a > < / span >   < a class = "code" href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > Status< / a > < a class = "code" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a109d8adf6eaf0e85d46358ffa9b5e2d8" > FixedKeySource::GetCryptoPeriodKey< / a > (uint32_t crypto_period_index,< / div >
< div class = "line" > < a name = "l00064" > < / a > < span class = "lineno" > 64< / span >   TrackType track_type,< / div >
< div class = "line" > < a name = "l00065" > < / a > < span class = "lineno" > 65< / span >   < a class = "code" href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > * key) {< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "comment" > // Create a copy of the key.< / span > < / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   *key = *encryption_key_;< / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < span class = "comment" > // A naive key rotation algorithm is implemented here by left rotating the< / span > < / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "comment" > // key, key_id and pssh. Note that this implementation is only intended for< / span > < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "comment" > // testing purpose. The actual key rotation algorithm can be much more< / span > < / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "comment" > // complicated.< / span > < / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   LOG(WARNING)< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < < < span class = "stringliteral" > " This naive key rotation algorithm should not be used in production." < / span > ;< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   std::rotate(key-> key_id.begin(),< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   key-> key_id.begin() + (crypto_period_index % key-> key_id.size()),< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   key-> key_id.end());< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   std::rotate(key-> key.begin(),< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   key-> key.begin() + (crypto_period_index % key-> key.size()),< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   key-> key.end());< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < key-> key_system_info.size(); i++) {< / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   std::vector< uint8_t> pssh_data = key-> key_system_info[i].pssh_data();< / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   std::rotate(pssh_data.begin(),< / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   pssh_data.begin() + (crypto_period_index % pssh_data.size()),< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   pssh_data.end());< / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   key-> key_system_info[i].set_pssh_data(pssh_data);< / 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 >   < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "keywordflow" > return< / span > Status::OK;< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / 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" > < a class = "line" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af66ed2804b126e9e336ef97e532e1593" > 93< / a > < / span >   scoped_ptr< FixedKeySource> < a class = "code" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af66ed2804b126e9e336ef97e532e1593" > FixedKeySource::CreateFromHexStrings< / a > (< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "keyword" > const< / span > std::string& key_id_hex,< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keyword" > const< / span > std::string& key_hex,< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keyword" > const< / span > std::string& pssh_boxes_hex,< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keyword" > const< / span > std::string& iv_hex) {< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   scoped_ptr< EncryptionKey> encryption_key(< span class = "keyword" > new< / span > < a class = "code" href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > EncryptionKey< / a > ());< / div >
< div class = "line" > < a name = "l00099" > < / a > < span class = "lineno" > 99< / span >   < / div >
< div class = "line" > < a name = "l00100" > < / a > < span class = "lineno" > 100< / span >   < span class = "keywordflow" > if< / span > (!base::HexStringToBytes(key_id_hex, & encryption_key-> key_id)) {< / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Cannot parse key_id_hex " < / span > < < key_id_hex;< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< FixedKeySource> ();< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (encryption_key-> key_id.size() != 16) {< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Invalid key ID size ' " < / span > < < encryption_key-> key_id.size()< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < < < span class = "stringliteral" > " ' , must be 16 bytes." < / span > ;< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< FixedKeySource> ();< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / 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" > if< / span > (!base::HexStringToBytes(key_hex, & encryption_key-> key)) {< / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Cannot parse key_hex " < / span > < < key_hex;< / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< FixedKeySource> ();< / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   }< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   std::vector< uint8_t> pssh_boxes;< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "keywordflow" > if< / span > (!pssh_boxes_hex.empty() & & < / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   !base::HexStringToBytes(pssh_boxes_hex, & pssh_boxes)) {< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Cannot parse pssh_hex " < / span > < < pssh_boxes_hex;< / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< FixedKeySource> ();< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   }< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordflow" > if< / span > (!iv_hex.empty()) {< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "keywordflow" > if< / span > (!base::HexStringToBytes(iv_hex, & encryption_key-> iv)) {< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Cannot parse iv_hex " < / span > < < iv_hex;< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< FixedKeySource> ();< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   }< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   }< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   < span class = "keywordflow" > if< / span > (!< a class = "code" href = "../../db/da0/classedash__packager_1_1media_1_1ProtectionSystemSpecificInfo.html#a81b932254de07b9f586a6ad64cb4e6f1" > ProtectionSystemSpecificInfo::ParseBoxes< / a > (< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   pssh_boxes.data(), pssh_boxes.size(),< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   & encryption_key-> key_system_info)) {< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   LOG(ERROR) < < < span class = "stringliteral" > " --pssh argument should be full PSSH boxes." < / span > ;< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< FixedKeySource> ();< / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / 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 >   < span class = "comment" > // If there aren' t any PSSH boxes given, create one with the common system ID.< / span > < / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "keywordflow" > if< / span > (encryption_key-> key_system_info.size() == 0) {< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < a class = "code" href = "../../db/da0/classedash__packager_1_1media_1_1ProtectionSystemSpecificInfo.html" > ProtectionSystemSpecificInfo< / a > info;< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   info.add_key_id(encryption_key-> key_id);< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   info.set_system_id(kCommonSystemId, arraysize(kCommonSystemId));< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   info.set_pssh_box_version(1);< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   < / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   encryption_key-> key_system_info.push_back(info);< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   }< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < span class = "keywordflow" > return< / span > scoped_ptr< FixedKeySource> (< span class = "keyword" > new< / span > < a class = "code" href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html" > FixedKeySource< / a > (encryption_key.Pass()));< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   }< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   FixedKeySource::FixedKeySource() {}< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   FixedKeySource::FixedKeySource(scoped_ptr< EncryptionKey> key)< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   : encryption_key_(key.Pass()) {}< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   } < span class = "comment" > // namespace edash_packager< / span > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1FixedKeySource_html_a109d8adf6eaf0e85d46358ffa9b5e2d8" > < div class = "ttname" > < a href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a109d8adf6eaf0e85d46358ffa9b5e2d8" > edash_packager::media::FixedKeySource::GetCryptoPeriodKey< / a > < / div > < div class = "ttdeci" > Status GetCryptoPeriodKey(uint32_t crypto_period_index, TrackType track_type, EncryptionKey *key) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d6b/fixed__key__source_8cc_source.html#l00063" > fixed_key_source.cc:63< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1ProtectionSystemSpecificInfo_html_a81b932254de07b9f586a6ad64cb4e6f1" > < div class = "ttname" > < a href = "../../db/da0/classedash__packager_1_1media_1_1ProtectionSystemSpecificInfo.html#a81b932254de07b9f586a6ad64cb4e6f1" > edash_packager::media::ProtectionSystemSpecificInfo::ParseBoxes< / a > < / div > < div class = "ttdeci" > static bool ParseBoxes(const uint8_t *data, size_t data_size, std::vector< ProtectionSystemSpecificInfo > *pssh_boxes)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d7/d42/protection__system__specific__info_8cc_source.html#l00026" > protection_system_specific_info.cc:26< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1ProtectionSystemSpecificInfo_html" > < div class = "ttname" > < a href = "../../db/da0/classedash__packager_1_1media_1_1ProtectionSystemSpecificInfo.html" > edash_packager::media::ProtectionSystemSpecificInfo< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d6/d59/protection__system__specific__info_8h_source.html#l00019" > protection_system_specific_info.h:19< / a > < / div > < / div >
< div class = "ttc" id = "structedash__packager_1_1media_1_1EncryptionKey_html" > < div class = "ttname" > < a href = "../../d0/d86/structedash__packager_1_1media_1_1EncryptionKey.html" > edash_packager::media::EncryptionKey< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/d3f/key__source_8h_source.html#l00020" > key_source.h:20< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1Status_html" > < div class = "ttname" > < a href = "../../d2/d90/classedash__packager_1_1media_1_1Status.html" > edash_packager::media::Status< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d1/d13/status_8h_source.html#l00075" > status.h:75< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1FixedKeySource_html" > < div class = "ttname" > < a href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html" > edash_packager::media::FixedKeySource< / a > < / div > < div class = "ttdoc" > A key source that uses fixed keys for encryption. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d72/fixed__key__source_8h_source.html#l00020" > fixed_key_source.h:20< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1FixedKeySource_html_af66ed2804b126e9e336ef97e532e1593" > < div class = "ttname" > < a href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af66ed2804b126e9e336ef97e532e1593" > edash_packager::media::FixedKeySource::CreateFromHexStrings< / a > < / div > < div class = "ttdeci" > static scoped_ptr< FixedKeySource > CreateFromHexStrings(const std::string & key_id_hex, const std::string & key_hex, const std::string & pssh_boxes_hex, const std::string & iv_hex)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d6b/fixed__key__source_8cc_source.html#l00093" > fixed_key_source.cc:93< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1FixedKeySource_html_a588ebb1c3984ffbeca897273bb7931dc" > < div class = "ttname" > < a href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#a588ebb1c3984ffbeca897273bb7931dc" > edash_packager::media::FixedKeySource::GetKey< / a > < / div > < div class = "ttdeci" > Status GetKey(TrackType track_type, EncryptionKey *key) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d6b/fixed__key__source_8cc_source.html#l00042" > fixed_key_source.cc:42< / a > < / div > < / div >
< div class = "ttc" id = "classedash__packager_1_1media_1_1FixedKeySource_html_af8d99a5165eabd51b9c7b908bad6c8e6" > < div class = "ttname" > < a href = "../../d0/d86/classedash__packager_1_1media_1_1FixedKeySource.html#af8d99a5165eabd51b9c7b908bad6c8e6" > edash_packager::media::FixedKeySource::FetchKeys< / a > < / div > < div class = "ttdeci" > Status FetchKeys(const std::vector< uint8_t > & pssh_box) override< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d3/d6b/fixed__key__source_8cc_source.html#l00026" > fixed_key_source.cc:26< / a > < / div > < / div >
< / div > <!-- fragment --> < / div > <!-- contents -->
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