Mercurial > hg > orthanc-object-storage
annotate Common/EncryptionHelpers.h @ 30:662b9d3f217d
fix missing definition of "byte" from CryptoPP
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Sat, 03 Oct 2020 10:39:45 +0200 |
| parents | 319d41a22de4 |
| children | f55b2afdf53d |
| rev | line source |
|---|---|
| 1 | 1 /** |
| 2 * Cloud storage plugins for Orthanc | |
| 3 * Copyright (C) 2017-2020 Osimis S.A., Belgium | |
| 4 * | |
| 5 * This program is free software: you can redistribute it and/or | |
| 6 * modify it under the terms of the GNU Affero General Public License | |
| 7 * as published by the Free Software Foundation, either version 3 of | |
| 8 * the License, or (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, but | |
| 11 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 * Affero General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU Affero General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 **/ | |
| 18 #pragma once | |
| 19 | |
| 20 #include <memory.h> | |
| 21 #include <cryptopp/secblock.h> | |
|
30
662b9d3f217d
fix missing definition of "byte" from CryptoPP
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
22
diff
changeset
|
22 #include <cryptopp/osrng.h> |
| 1 | 23 #include <boost/thread/mutex.hpp> |
| 15 | 24 #include <MultiThreading/Semaphore.h> |
| 1 | 25 |
| 26 class EncryptionException : public std::runtime_error | |
| 27 { | |
| 28 public: | |
| 29 EncryptionException(const std::string& what) | |
| 30 : std::runtime_error(what) | |
| 31 { | |
| 32 } | |
| 33 }; | |
| 34 | |
| 35 class EncryptionHelpers | |
| 36 { | |
| 37 public: | |
| 38 static const size_t HEADER_VERSION_SIZE = 2; | |
| 39 static const size_t MASTER_KEY_ID_SIZE = 4; | |
| 40 static const size_t AES_KEY_SIZE = 32; // length of AES keys (in bytes) | |
| 41 static const size_t IV_SIZE = 32; // length of IVs (in bytes) | |
| 42 static const size_t INTEGRITY_CHECK_TAG_SIZE = 16; // length of the TAG that is used to check the integrity of data (in bytes) | |
| 43 | |
| 44 static const size_t OVERHEAD_SIZE = HEADER_VERSION_SIZE + MASTER_KEY_ID_SIZE + AES_KEY_SIZE + IV_SIZE + INTEGRITY_CHECK_TAG_SIZE; | |
| 45 | |
| 46 | |
| 47 static const std::string HEADER_VERSION; | |
| 48 | |
| 49 private: | |
| 50 Orthanc::Semaphore concurrentInputSizeSemaphore_; | |
| 51 size_t maxConcurrentInputSize_; | |
| 52 | |
| 53 CryptoPP::AutoSeededRandomPool randomGenerator_; | |
| 54 | |
| 55 CryptoPP::SecByteBlock encryptionMasterKey_; // at a given time, there's only one master key that is used for encryption | |
| 56 std::string encryptionMasterKeyId_; | |
| 57 | |
| 58 std::map<std::string, CryptoPP::SecByteBlock> previousMasterKeys_; // for decryption, we might use older master keys too | |
| 59 | |
| 60 public: | |
| 61 | |
| 62 // since the memory used during encryption/decryption can grow up to a bit more than 2 times the input, | |
| 63 // we want to limit the number of threads doing concurrent processing according to the available memory | |
| 64 // instead of the number of concurrent threads | |
| 65 EncryptionHelpers(size_t maxConcurrentInputSize = 1024*1024*1024); | |
| 66 | |
| 67 void SetCurrentMasterKey(uint32_t id, const std::string& path); | |
| 68 | |
| 69 void SetCurrentMasterKey(uint32_t id, const CryptoPP::SecByteBlock& key); | |
| 70 | |
| 71 void AddPreviousMasterKey(uint32_t id, const std::string& path); | |
| 72 | |
| 73 void AddPreviousMasterKey(uint32_t id, const CryptoPP::SecByteBlock& key); | |
| 74 | |
| 75 // input: plain text data | |
| 76 // output: prefix/encrypted data/integrity check tag | |
| 77 void Encrypt(std::string& output, const std::string& input); | |
| 78 void Encrypt(std::string& output, const char* data, size_t size); | |
| 79 | |
| 80 // input: prefix/encrypted data/integrity check tag | |
| 81 // output: plain text data | |
| 82 void Decrypt(std::string& output, const std::string& input); | |
| 83 void Decrypt(char* output, const char* data, size_t size); | |
| 84 | |
| 85 static void GenerateKey(CryptoPP::SecByteBlock& key); | |
| 86 | |
| 87 private: | |
| 88 | |
| 89 void EncryptInternal(std::string& output, const char* data, size_t size, const CryptoPP::SecByteBlock& masterKey); | |
| 90 | |
| 91 void DecryptInternal(char* output, const char* data, size_t size, const CryptoPP::SecByteBlock& masterKey); | |
| 92 | |
| 93 void EncryptPrefixSecBlock(std::string& output, const CryptoPP::SecByteBlock& input, const CryptoPP::SecByteBlock& masterKey); | |
| 94 | |
| 95 void DecryptPrefixSecBlock(CryptoPP::SecByteBlock& output, const std::string& input, const CryptoPP::SecByteBlock& masterKey); | |
| 96 | |
| 97 std::string GetMasterKeyIdentifier(const CryptoPP::SecByteBlock& masterKey); | |
| 98 | |
| 99 const CryptoPP::SecByteBlock& GetMasterKey(const std::string& keyId); | |
| 100 | |
| 101 public: | |
| 102 | |
|
30
662b9d3f217d
fix missing definition of "byte" from CryptoPP
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
22
diff
changeset
|
103 static std::string ToHexString(const void* block, size_t size); |
| 1 | 104 static std::string ToHexString(const std::string& block); |
| 105 static std::string ToHexString(const CryptoPP::SecByteBlock& block); | |
| 106 static std::string ToString(const CryptoPP::SecByteBlock& block); | |
| 107 static std::string ToString(uint32_t value); | |
| 108 | |
| 109 static void ReadKey(CryptoPP::SecByteBlock& key, const std::string& path); | |
| 110 //static void EncryptionHelpers::Encrypt(std::string& output, const std::string& input, const std::string& key, const std::string& iv); | |
| 111 }; | |
| 112 |