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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" > rsa_key.cc< / 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 2014 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 >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00007" > < / a > < span class = "lineno" > 7< / span >   < span class = "comment" > // RSA signature details:< / span > < / div >
< div class = "line" > < a name = "l00008" > < / a > < span class = "lineno" > 8< / span >   < span class = "comment" > // Algorithm: RSASSA-PSS< / span > < / div >
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "comment" > // Hash algorithm: SHA1< / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < span class = "comment" > // Mask generation function: mgf1SHA1< / span > < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "comment" > // Salt length: 20 bytes< / span > < / div >
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "comment" > // Trailer field: 0xbc< / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "comment" > //< / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "comment" > // RSA encryption details:< / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "comment" > // Algorithm: RSA-OAEP< / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "comment" > // Mask generation function: mgf1SHA1< / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "comment" > // Label (encoding paramter): empty std::string< / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "preprocessor" > #include " packager/media/base/rsa_key.h" < / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "preprocessor" > #include < openssl/err.h> < / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "preprocessor" > #include < openssl/rsa.h> < / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "preprocessor" > #include < openssl/x509.h> < / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "preprocessor" > #include < vector> < / span > < / div >
< div class = "line" > < a name = "l00025" > < / a > < span class = "lineno" > 25< / span >   < / div >
< div class = "line" > < a name = "l00026" > < / a > < span class = "lineno" > 26< / span >   < span class = "preprocessor" > #include " packager/base/logging.h" < / span > < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "preprocessor" > #include " packager/base/sha1.h" < / span > < / div >
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< 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" > namespace < / 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" > 31< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > kPssSaltLength = 20u;< / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < span class = "comment" > // Serialize rsa key from DER encoded PKCS#1 RSAPrivateKey.< / span > < / div >
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   RSA* DeserializeRsaKey(< span class = "keyword" > const< / span > std::string& serialized_key,< / div >
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "keywordtype" > bool< / span > deserialize_private_key) {< / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "keywordflow" > if< / span > (serialized_key.empty()) {< / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Serialized RSA Key is empty." < / span > ;< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < span class = "keywordflow" > return< / span > NULL;< / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   }< / 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 >   BIO* bio = BIO_new_mem_buf(const_cast< char*> (serialized_key.data()),< / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   serialized_key.size());< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < span class = "keywordflow" > if< / span > (bio == NULL) {< / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   LOG(ERROR) < < < span class = "stringliteral" > " BIO_new_mem_buf returned NULL." < / span > ;< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "keywordflow" > return< / span > NULL;< / 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 >   RSA* rsa_key = deserialize_private_key ? d2i_RSAPrivateKey_bio(bio, NULL)< / div >
< div class = "line" > < a name = "l00048" > < / a > < span class = "lineno" > 48< / span >   : d2i_RSAPublicKey_bio(bio, NULL);< / div >
< div class = "line" > < a name = "l00049" > < / a > < span class = "lineno" > 49< / span >   BIO_free(bio);< / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "keywordflow" > return< / span > rsa_key;< / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   }< / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   RSA* DeserializeRsaPrivateKey(< span class = "keyword" > const< / span > std::string& serialized_key) {< / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   RSA* rsa_key = DeserializeRsaKey(serialized_key, < span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "keywordflow" > if< / span > (!rsa_key) {< / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Private RSA key deserialization failure." < / span > ;< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "keywordflow" > return< / span > NULL;< / 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 >   < span class = "keywordflow" > if< / span > (RSA_check_key(rsa_key) != 1) {< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Invalid RSA Private key: " < / span > < < ERR_error_string(< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   ERR_get_error(), NULL);< / div >
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   RSA_free(rsa_key);< / div >
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keywordflow" > return< / span > NULL;< / 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 = "keywordflow" > return< / span > rsa_key;< / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   }< / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   RSA* DeserializeRsaPublicKey(< span class = "keyword" > const< / span > std::string& serialized_key) {< / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   RSA* rsa_key = DeserializeRsaKey(serialized_key, < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "keywordflow" > if< / span > (!rsa_key) {< / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Private RSA key deserialization failure." < / span > ;< / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "keywordflow" > return< / span > NULL;< / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   }< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < span class = "keywordflow" > if< / span > (RSA_size(rsa_key) < = 0) {< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Invalid RSA Public key: " < / span > < < ERR_error_string(< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   ERR_get_error(), NULL);< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   RSA_free(rsa_key);< / div >
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < span class = "keywordflow" > return< / span > NULL;< / div >
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   }< / div >
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keywordflow" > return< / span > rsa_key;< / 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 >   < / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "keyword" > namespace < / span > shaka {< / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "keyword" > namespace < / span > media {< / 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 >   RsaPrivateKey::RsaPrivateKey(RSA* rsa_key) : rsa_key_(rsa_key) {< / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   DCHECK(rsa_key);< / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   }< / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   RsaPrivateKey::~RsaPrivateKey() {< / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "keywordflow" > if< / span > (rsa_key_ != NULL)< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   RSA_free(rsa_key_);< / 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 >   < / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > < a class = "line" href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#aef45d0014d7971b936ce3d0109935ba8" > 96< / a > < / span >   < a class = "code" href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html" > RsaPrivateKey< / a > * < a class = "code" href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#aef45d0014d7971b936ce3d0109935ba8" > RsaPrivateKey::Create< / a > (< span class = "keyword" > const< / span > std::string& serialized_key) {< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   RSA* rsa_key = DeserializeRsaPrivateKey(serialized_key);< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keywordflow" > return< / span > rsa_key == NULL ? NULL : < span class = "keyword" > new< / span > < a class = "code" href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html" > RsaPrivateKey< / a > (rsa_key);< / 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 >   < / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > < a class = "line" href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#a89a475ffe2d96bfab09536b864038ca4" > 101< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#a89a475ffe2d96bfab09536b864038ca4" > RsaPrivateKey::Decrypt< / a > (< span class = "keyword" > const< / span > std::string& encrypted_message,< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   std::string* decrypted_message) {< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   DCHECK(decrypted_message);< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "keywordtype" > size_t< / span > rsa_size = RSA_size(rsa_key_);< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "keywordflow" > if< / span > (encrypted_message.size() != rsa_size) {< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Encrypted RSA message has the wrong size (expected " < / span > < / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < < rsa_size < < < span class = "stringliteral" > " , actual " < / span > < < encrypted_message.size() < < < span class = "stringliteral" > " )." < / span > ;< / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / 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 >   decrypted_message-> resize(rsa_size);< / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "keywordtype" > int< / span > decrypted_size = RSA_private_decrypt(< / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   rsa_size, reinterpret_cast< const uint8_t*> (encrypted_message.data()),< / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   reinterpret_cast< uint8_t*> (& (*decrypted_message)[0]), rsa_key_,< / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   RSA_PKCS1_OAEP_PADDING);< / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "keywordflow" > if< / span > (decrypted_size == -1) {< / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   LOG(ERROR) < < < span class = "stringliteral" > " RSA private decrypt failure: " < / span > < < ERR_error_string(< / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   ERR_get_error(), NULL);< / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   }< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   decrypted_message-> resize(decrypted_size);< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / 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" > < a class = "line" href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#ad05d8951dfe3a8af754490022e95e5f2" > 127< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#ad05d8951dfe3a8af754490022e95e5f2" > RsaPrivateKey::GenerateSignature< / a > (< span class = "keyword" > const< / span > std::string& message,< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   std::string* signature) {< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   DCHECK(signature);< / div >
< div class = "line" > < a name = "l00130" > < / a > < span class = "lineno" > 130< / span >   < span class = "keywordflow" > if< / span > (message.empty()) {< / div >
< div class = "line" > < a name = "l00131" > < / a > < span class = "lineno" > 131< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Message to be signed is empty." < / span > ;< / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / 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 >   std::string message_digest = base::SHA1HashString(message);< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "comment" > // Add PSS padding.< / span > < / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   < span class = "keywordtype" > size_t< / span > rsa_size = RSA_size(rsa_key_);< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   std::vector< uint8_t> padded_digest(rsa_size);< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "keywordflow" > if< / span > (!RSA_padding_add_PKCS1_PSS_mgf1(< / div >
< div class = "line" > < a name = "l00141" > < / a > < span class = "lineno" > 141< / span >   rsa_key_, & padded_digest[0],< / div >
< div class = "line" > < a name = "l00142" > < / a > < span class = "lineno" > 142< / span >   reinterpret_cast< uint8_t*> (& message_digest[0]), EVP_sha1(),< / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   EVP_sha1(), kPssSaltLength)) {< / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   LOG(ERROR) < < < span class = "stringliteral" > " RSA padding failure: " < / span > < < ERR_error_string(ERR_get_error(),< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   NULL);< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / 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 >   < / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   < span class = "comment" > // Encrypt PSS padded digest.< / span > < / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   signature-> resize(rsa_size);< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "keywordtype" > int< / span > signature_size = RSA_private_encrypt(< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   padded_digest.size(), & padded_digest[0],< / div >
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < span class = "keyword" > reinterpret_cast< < / span > uint8_t*< span class = "keyword" > > < / span > (& (*signature)[0]), rsa_key_, RSA_NO_PADDING);< / div >
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< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < / div >
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< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keywordflow" > if< / span > (signature_size != static_cast< int> (rsa_size)) {< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   LOG(ERROR) < < < span class = "stringliteral" > " RSA private encrypt failure: " < / span > < < ERR_error_string(< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   ERR_get_error(), NULL);< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   }< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   }< / div >
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < / div >
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   RsaPublicKey::RsaPublicKey(RSA* rsa_key) : rsa_key_(rsa_key) {< / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   DCHECK(rsa_key);< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   }< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   RsaPublicKey::~RsaPublicKey() {< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "keywordflow" > if< / span > (rsa_key_ != NULL)< / div >
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   RSA_free(rsa_key_);< / div >
< div class = "line" > < a name = "l00169" > < / a > < span class = "lineno" > 169< / span >   }< / div >
< div class = "line" > < a name = "l00170" > < / a > < span class = "lineno" > 170< / span >   < / div >
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#aabe4a2f1541ca1e741305f58329e3881" > 171< / a > < / span >   < a class = "code" href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html" > RsaPublicKey< / a > * < a class = "code" href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#aabe4a2f1541ca1e741305f58329e3881" > RsaPublicKey::Create< / a > (< span class = "keyword" > const< / span > std::string& serialized_key) {< / div >
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   RSA* rsa_key = DeserializeRsaPublicKey(serialized_key);< / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < span class = "keywordflow" > return< / span > rsa_key == NULL ? NULL : < span class = "keyword" > new< / span > < a class = "code" href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html" > RsaPublicKey< / a > (rsa_key);< / div >
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< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   }< / div >
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< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#ab9dcf591f3235b8f4eaa02886f9845e3" > 176< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#ab9dcf591f3235b8f4eaa02886f9845e3" > RsaPublicKey::Encrypt< / a > (< span class = "keyword" > const< / span > std::string& clear_message,< / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   std::string* encrypted_message) {< / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   DCHECK(encrypted_message);< / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < span class = "keywordflow" > if< / span > (clear_message.empty()) {< / div >
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Message to be encrypted is empty." < / span > ;< / div >
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > 181< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   }< / div >
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < / div >
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < span class = "keywordtype" > size_t< / span > rsa_size = RSA_size(rsa_key_);< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   encrypted_message-> resize(rsa_size);< / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < span class = "keywordtype" > int< / span > encrypted_size =< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   RSA_public_encrypt(clear_message.size(),< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   < span class = "keyword" > reinterpret_cast< < / span > < span class = "keyword" > const < / span > uint8_t*< span class = "keyword" > > < / span > (clear_message.data()),< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   reinterpret_cast< uint8_t*> (& (*encrypted_message)[0]),< / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   rsa_key_, RSA_PKCS1_OAEP_PADDING);< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   < / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   < span class = "keywordflow" > if< / span > (encrypted_size != static_cast< int> (rsa_size)) {< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   LOG(ERROR) < < < span class = "stringliteral" > " RSA public encrypt failure: " < / span > < < ERR_error_string(< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   ERR_get_error(), NULL);< / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   }< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   }< / div >
< div class = "line" > < a name = "l00199" > < / a > < span class = "lineno" > 199< / span >   < / div >
< div class = "line" > < a name = "l00200" > < / a > < span class = "lineno" > < a class = "line" href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#a146cc97c8fcacadde1b08c373b766fe4" > 200< / a > < / span >   < span class = "keywordtype" > bool< / span > < a class = "code" href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#a146cc97c8fcacadde1b08c373b766fe4" > RsaPublicKey::VerifySignature< / a > (< span class = "keyword" > const< / span > std::string& message,< / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > 201< / span >   < span class = "keyword" > const< / span > std::string& signature) {< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   < span class = "keywordflow" > if< / span > (message.empty()) {< / div >
< div class = "line" > < a name = "l00203" > < / a > < span class = "lineno" > 203< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Signed message is empty." < / span > ;< / div >
< div class = "line" > < a name = "l00204" > < / a > < span class = "lineno" > 204< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00205" > < / a > < span class = "lineno" > 205< / span >   }< / div >
< div class = "line" > < a name = "l00206" > < / a > < span class = "lineno" > 206< / span >   < / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   < span class = "keywordtype" > size_t< / span > rsa_size = RSA_size(rsa_key_);< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   < span class = "keywordflow" > if< / span > (signature.size() != rsa_size) {< / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   LOG(ERROR) < < < span class = "stringliteral" > " Message signature is of the wrong size (expected " < / span > < / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < < rsa_size < < < span class = "stringliteral" > " , actual " < / span > < < signature.size() < < < span class = "stringliteral" > " )." < / span > ;< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   }< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   < / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < span class = "comment" > // Decrypt the signature.< / span > < / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   std::vector< uint8_t> padded_digest(signature.size());< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < span class = "keywordtype" > int< / span > decrypted_size =< / div >
< div class = "line" > < a name = "l00217" > < / a > < span class = "lineno" > 217< / span >   RSA_public_decrypt(signature.size(),< / div >
< div class = "line" > < a name = "l00218" > < / a > < span class = "lineno" > 218< / span >   < span class = "keyword" > reinterpret_cast< < / span > < span class = "keyword" > const < / span > uint8_t*< span class = "keyword" > > < / span > (signature.data()),< / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   & padded_digest[0],< / div >
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   rsa_key_,< / div >
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   RSA_NO_PADDING);< / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > 222< / span >   < / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   < span class = "keywordflow" > if< / span > (decrypted_size != static_cast< int> (rsa_size)) {< / div >
< div class = "line" > < a name = "l00224" > < / a > < span class = "lineno" > 224< / span >   LOG(ERROR) < < < span class = "stringliteral" > " RSA public decrypt failure: " < / span > < < ERR_error_string(< / div >
< div class = "line" > < a name = "l00225" > < / a > < span class = "lineno" > 225< / span >   ERR_get_error(), NULL);< / div >
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   }< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   < / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   std::string message_digest = base::SHA1HashString(message);< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   < span class = "comment" > // Verify PSS padding.< / span > < / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   < span class = "keywordflow" > return< / span > RSA_verify_PKCS1_PSS_mgf1(< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   rsa_key_,< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   reinterpret_cast< const uint8_t*> (message_digest.data()),< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   EVP_sha1(),< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   EVP_sha1(),< / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   & padded_digest[0],< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   kPssSaltLength) != 0;< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   }< / div >
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< div class = "line" > < a name = "l00240" > < / a > < span class = "lineno" > 240< / span >   < / div >
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< div class = "line" > < a name = "l00241" > < / a > < span class = "lineno" > 241< / span >   } < span class = "comment" > // namespace media< / span > < / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   } < span class = "comment" > // namespace shaka< / span > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1RsaPublicKey_html" > < div class = "ttname" > < a href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html" > shaka::media::RsaPublicKey< / a > < / div > < div class = "ttdoc" > Rsa public key, used for signature verification and encryption. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/dcf/rsa__key_8h_source.html#l00053" > rsa_key.h:53< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1RsaPublicKey_html_ab9dcf591f3235b8f4eaa02886f9845e3" > < div class = "ttname" > < a href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#ab9dcf591f3235b8f4eaa02886f9845e3" > shaka::media::RsaPublicKey::Encrypt< / a > < / div > < div class = "ttdeci" > bool Encrypt(const std::string & clear_message, std::string *encrypted_message)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/dd9/rsa__key_8cc_source.html#l00176" > rsa_key.cc:176< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1RsaPrivateKey_html_a89a475ffe2d96bfab09536b864038ca4" > < div class = "ttname" > < a href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#a89a475ffe2d96bfab09536b864038ca4" > shaka::media::RsaPrivateKey::Decrypt< / a > < / div > < div class = "ttdeci" > bool Decrypt(const std::string & encrypted_message, std::string *decrypted_message)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/dd9/rsa__key_8cc_source.html#l00101" > rsa_key.cc:101< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1RsaPrivateKey_html" > < div class = "ttname" > < a href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html" > shaka::media::RsaPrivateKey< / a > < / div > < div class = "ttdoc" > Rsa private key, used for message signing and decryption. < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../d5/dcf/rsa__key_8h_source.html#l00024" > rsa_key.h:24< / a > < / div > < / div >
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< div class = "ttc" id = "classshaka_1_1media_1_1RsaPublicKey_html_a146cc97c8fcacadde1b08c373b766fe4" > < div class = "ttname" > < a href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#a146cc97c8fcacadde1b08c373b766fe4" > shaka::media::RsaPublicKey::VerifySignature< / a > < / div > < div class = "ttdeci" > bool VerifySignature(const std::string & message, const std::string & signature)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/dd9/rsa__key_8cc_source.html#l00200" > rsa_key.cc:200< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1RsaPublicKey_html_aabe4a2f1541ca1e741305f58329e3881" > < div class = "ttname" > < a href = "../../d9/d0c/classshaka_1_1media_1_1RsaPublicKey.html#aabe4a2f1541ca1e741305f58329e3881" > shaka::media::RsaPublicKey::Create< / a > < / div > < div class = "ttdeci" > static RsaPublicKey * Create(const std::string & serialized_key)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/dd9/rsa__key_8cc_source.html#l00171" > rsa_key.cc:171< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1RsaPrivateKey_html_ad05d8951dfe3a8af754490022e95e5f2" > < div class = "ttname" > < a href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#ad05d8951dfe3a8af754490022e95e5f2" > shaka::media::RsaPrivateKey::GenerateSignature< / a > < / div > < div class = "ttdeci" > bool GenerateSignature(const std::string & message, std::string *signature)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/dd9/rsa__key_8cc_source.html#l00127" > rsa_key.cc:127< / a > < / div > < / div >
< div class = "ttc" id = "classshaka_1_1media_1_1RsaPrivateKey_html_aef45d0014d7971b936ce3d0109935ba8" > < div class = "ttname" > < a href = "../../d0/dce/classshaka_1_1media_1_1RsaPrivateKey.html#aef45d0014d7971b936ce3d0109935ba8" > shaka::media::RsaPrivateKey::Create< / a > < / div > < div class = "ttdeci" > static RsaPrivateKey * Create(const std::string & serialized_key)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "../../dc/dd9/rsa__key_8cc_source.html#l00096" > rsa_key.cc:96< / a > < / div > < / div >
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