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author | Tycho <work.tycho+git@gmail.com> | 2014-01-26 15:28:51 +0100 |
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committer | Tycho <work.tycho+git@gmail.com> | 2014-01-26 15:28:51 +0100 |
commit | bed2ee22e8283a2e8bd0790a89124839319c2fc3 (patch) | |
tree | ee9e66a7b7c63995797a502f209079c1422ce9c9 /lib/cryptopp/osrng.h | |
parent | Refactored cBlockHandler::OnUse and dependents (diff) | |
parent | Merge pull request #589 from mc-server/minecartimprovements (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | lib/cryptopp/osrng.h | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/lib/cryptopp/osrng.h b/lib/cryptopp/osrng.h deleted file mode 100644 index ae07d057b..000000000 --- a/lib/cryptopp/osrng.h +++ /dev/null @@ -1,156 +0,0 @@ -#ifndef CRYPTOPP_OSRNG_H -#define CRYPTOPP_OSRNG_H - -//! \file - -#include "config.h" - -#ifdef OS_RNG_AVAILABLE - -#include "randpool.h" -#include "rng.h" -#include "aes.h" -#include "sha.h" -#include "fips140.h" - -NAMESPACE_BEGIN(CryptoPP) - -//! Exception class for Operating-System Random Number Generator. -class CRYPTOPP_DLL OS_RNG_Err : public Exception -{ -public: - OS_RNG_Err(const std::string &operation); -}; - -#ifdef NONBLOCKING_RNG_AVAILABLE - -#ifdef CRYPTOPP_WIN32_AVAILABLE -class CRYPTOPP_DLL MicrosoftCryptoProvider -{ -public: - MicrosoftCryptoProvider(); - ~MicrosoftCryptoProvider(); -#if defined(_WIN64) - typedef unsigned __int64 ProviderHandle; // type HCRYPTPROV, avoid #include <windows.h> -#else - typedef unsigned long ProviderHandle; -#endif - ProviderHandle GetProviderHandle() const {return m_hProvider;} -private: - ProviderHandle m_hProvider; -}; - -#pragma comment(lib, "advapi32.lib") -#endif - -//! encapsulate CryptoAPI's CryptGenRandom or /dev/urandom -class CRYPTOPP_DLL NonblockingRng : public RandomNumberGenerator -{ -public: - NonblockingRng(); - ~NonblockingRng(); - void GenerateBlock(byte *output, size_t size); - -protected: -#ifdef CRYPTOPP_WIN32_AVAILABLE -# ifndef WORKAROUND_MS_BUG_Q258000 - MicrosoftCryptoProvider m_Provider; -# endif -#else - int m_fd; -#endif -}; - -#endif - -#ifdef BLOCKING_RNG_AVAILABLE - -//! encapsulate /dev/random, or /dev/srandom on OpenBSD -class CRYPTOPP_DLL BlockingRng : public RandomNumberGenerator -{ -public: - BlockingRng(); - ~BlockingRng(); - void GenerateBlock(byte *output, size_t size); - -protected: - int m_fd; -}; - -#endif - -CRYPTOPP_DLL void CRYPTOPP_API OS_GenerateRandomBlock(bool blocking, byte *output, size_t size); - -//! Automaticly Seeded Randomness Pool -/*! This class seeds itself using an operating system provided RNG. */ -class CRYPTOPP_DLL AutoSeededRandomPool : public RandomPool -{ -public: - //! use blocking to choose seeding with BlockingRng or NonblockingRng. the parameter is ignored if only one of these is available - explicit AutoSeededRandomPool(bool blocking = false, unsigned int seedSize = 32) - {Reseed(blocking, seedSize);} - void Reseed(bool blocking = false, unsigned int seedSize = 32); -}; - -//! RNG from ANSI X9.17 Appendix C, seeded using an OS provided RNG -template <class BLOCK_CIPHER> -class AutoSeededX917RNG : public RandomNumberGenerator, public NotCopyable -{ -public: - //! use blocking to choose seeding with BlockingRng or NonblockingRng. the parameter is ignored if only one of these is available - explicit AutoSeededX917RNG(bool blocking = false, bool autoSeed = true) - {if (autoSeed) Reseed(blocking);} - void Reseed(bool blocking = false, const byte *additionalEntropy = NULL, size_t length = 0); - // exposed for testing - void Reseed(const byte *key, size_t keylength, const byte *seed, const byte *timeVector); - - bool CanIncorporateEntropy() const {return true;} - void IncorporateEntropy(const byte *input, size_t length) {Reseed(false, input, length);} - void GenerateIntoBufferedTransformation(BufferedTransformation &target, const std::string &channel, lword length) {m_rng->GenerateIntoBufferedTransformation(target, channel, length);} - -private: - member_ptr<RandomNumberGenerator> m_rng; -}; - -template <class BLOCK_CIPHER> -void AutoSeededX917RNG<BLOCK_CIPHER>::Reseed(const byte *key, size_t keylength, const byte *seed, const byte *timeVector) -{ - m_rng.reset(new X917RNG(new typename BLOCK_CIPHER::Encryption(key, keylength), seed, timeVector)); -} - -template <class BLOCK_CIPHER> -void AutoSeededX917RNG<BLOCK_CIPHER>::Reseed(bool blocking, const byte *input, size_t length) -{ - SecByteBlock seed(BLOCK_CIPHER::BLOCKSIZE + BLOCK_CIPHER::DEFAULT_KEYLENGTH); - const byte *key; - do - { - OS_GenerateRandomBlock(blocking, seed, seed.size()); - if (length > 0) - { - SHA256 hash; - hash.Update(seed, seed.size()); - hash.Update(input, length); - hash.TruncatedFinal(seed, UnsignedMin(hash.DigestSize(), seed.size())); - } - key = seed + BLOCK_CIPHER::BLOCKSIZE; - } // check that seed and key don't have same value - while (memcmp(key, seed, STDMIN((unsigned int)BLOCK_CIPHER::BLOCKSIZE, (unsigned int)BLOCK_CIPHER::DEFAULT_KEYLENGTH)) == 0); - - Reseed(key, BLOCK_CIPHER::DEFAULT_KEYLENGTH, seed, NULL); -} - -CRYPTOPP_DLL_TEMPLATE_CLASS AutoSeededX917RNG<AES>; - -//! this is AutoSeededX917RNG\<AES\> in FIPS mode, otherwise it's AutoSeededRandomPool -#if CRYPTOPP_ENABLE_COMPLIANCE_WITH_FIPS_140_2 -typedef AutoSeededX917RNG<AES> DefaultAutoSeededRNG; -#else -typedef AutoSeededRandomPool DefaultAutoSeededRNG; -#endif - -NAMESPACE_END - -#endif - -#endif |