8#ifndef CRYPTOPP_IMPORTS
15#if defined(CRYPTOPP_WIN32_AVAILABLE) && !defined(OS_RNG_AVAILABLE)
16# pragma message("WARNING: Compiling for Windows but an OS RNG is not available. This is likely a Windows Phone 8 or Windows Store 8 app.")
19#if !defined(NO_OS_DEPENDENCE) && defined(OS_RNG_AVAILABLE)
24#ifdef CRYPTOPP_WIN32_AVAILABLE
25#define WIN32_LEAN_AND_MEAN
27#if defined(USE_MS_CRYPTOAPI)
29#ifndef CRYPT_NEWKEYSET
30# define CRYPT_NEWKEYSET 0x00000008
32#ifndef CRYPT_MACHINE_KEYSET
33# define CRYPT_MACHINE_KEYSET 0x00000020
35#elif defined(USE_MS_CNGAPI)
38# define BCRYPT_SUCCESS(Status) (((NTSTATUS)(Status)) >= 0)
40#ifndef STATUS_INVALID_PARAMETER
41# define STATUS_INVALID_PARAMETER 0xC000000D
43#ifndef STATUS_INVALID_HANDLE
44# define STATUS_INVALID_HANDLE 0xC0000008
49#ifdef CRYPTOPP_UNIX_AVAILABLE
57#if defined(NONBLOCKING_RNG_AVAILABLE) || defined(BLOCKING_RNG_AVAILABLE)
59 :
Exception(OTHER_ERROR,
"OS_Rng: " + operation +
" operation failed with error " +
60#ifdef CRYPTOPP_WIN32_AVAILABLE
70#ifdef NONBLOCKING_RNG_AVAILABLE
72#ifdef CRYPTOPP_WIN32_AVAILABLE
74#if defined(USE_MS_CNGAPI)
75inline DWORD NtStatusToErrorCode(NTSTATUS status)
77 if (status == STATUS_INVALID_PARAMETER)
78 return ERROR_INVALID_PARAMETER;
79 else if (status == STATUS_INVALID_HANDLE)
80 return ERROR_INVALID_HANDLE;
86#if defined(UNICODE) || defined(_UNICODE)
87# define CRYPTOPP_CONTAINER L"Crypto++ RNG"
89# define CRYPTOPP_CONTAINER "Crypto++ RNG"
94#if defined(USE_MS_CRYPTOAPI)
96 if (!CryptAcquireContext(&m_hProvider, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
98 const DWORD firstErr = GetLastError();
99 if (!CryptAcquireContext(&m_hProvider, CRYPTOPP_CONTAINER, 0, PROV_RSA_FULL, CRYPT_NEWKEYSET ) &&
100 !CryptAcquireContext(&m_hProvider, CRYPTOPP_CONTAINER, 0, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET|CRYPT_NEWKEYSET))
103 SetLastError(firstErr);
107#elif defined(USE_MS_CNGAPI)
108 NTSTATUS ret = BCryptOpenAlgorithmProvider(&m_hProvider, BCRYPT_RNG_ALGORITHM, MS_PRIMITIVE_PROVIDER, 0);
109 if (!(BCRYPT_SUCCESS(ret)))
112 SetLastError(NtStatusToErrorCode(ret));
113 throw OS_RNG_Err(
"BCryptOpenAlgorithmProvider");
118MicrosoftCryptoProvider::~MicrosoftCryptoProvider()
120#if defined(USE_MS_CRYPTOAPI)
122 CryptReleaseContext(m_hProvider, 0);
123#elif defined(USE_MS_CNGAPI)
125 BCryptCloseAlgorithmProvider(m_hProvider, 0);
133#ifndef CRYPTOPP_WIN32_AVAILABLE
134 m_fd = open(
"/dev/urandom",O_RDONLY);
140NonblockingRng::~NonblockingRng()
142#ifndef CRYPTOPP_WIN32_AVAILABLE
149#ifdef CRYPTOPP_WIN32_AVAILABLE
152# if defined(USE_MS_CRYPTOAPI)
155# elif defined(USE_MS_CNGAPI)
156 NTSTATUS ret = BCryptGenRandom(hProvider.
GetProviderHandle(), output, (ULONG)size, 0);
157 if (!(BCRYPT_SUCCESS(ret)))
160 SetLastError(NtStatusToErrorCode(ret));
167 ssize_t len = read(m_fd, output, size);
171 if (errno != EINTR && errno != EAGAIN)
187#ifdef BLOCKING_RNG_AVAILABLE
189#ifndef CRYPTOPP_BLOCKING_RNG_FILENAME
191#define CRYPTOPP_BLOCKING_RNG_FILENAME "/dev/srandom"
193#define CRYPTOPP_BLOCKING_RNG_FILENAME "/dev/random"
199 m_fd = open(CRYPTOPP_BLOCKING_RNG_FILENAME,O_RDONLY);
201 throw OS_RNG_Err(
"open " CRYPTOPP_BLOCKING_RNG_FILENAME);
204BlockingRng::~BlockingRng()
215 ssize_t len = read(m_fd, output, size);
219 if (errno != EINTR && errno != EAGAIN)
220 throw OS_RNG_Err(
"read " CRYPTOPP_BLOCKING_RNG_FILENAME);
236void OS_GenerateRandomBlock(
bool blocking,
byte *output,
size_t size)
238#ifdef NONBLOCKING_RNG_AVAILABLE
242#ifdef BLOCKING_RNG_AVAILABLE
248#ifdef BLOCKING_RNG_AVAILABLE
252#ifdef NONBLOCKING_RNG_AVAILABLE
void Reseed(bool blocking=false, unsigned int seedSize=32)
Reseed an AutoSeededRandomPool.
Wrapper class for /dev/random and /dev/srandom.
void GenerateBlock(byte *output, size_t size)
Generate random array of bytes.
BlockingRng()
Construct a BlockingRng.
Base class for all exceptions thrown by the library.
MicrosoftCryptoProvider()
Construct a MicrosoftCryptoProvider.
ProviderHandle GetProviderHandle() const
Retrieves the provider handle.
Wrapper class for /dev/random and /dev/srandom.
NonblockingRng()
Construct a NonblockingRng.
void GenerateBlock(byte *output, size_t size)
Generate random array of bytes.
Exception thrown when an operating system error is encountered.
OS_RNG_Err(const std::string &operation)
Constructs an OS_RNG_Err.
void IncorporateEntropy(const byte *input, size_t length)
Update RNG state with additional unpredictable values.
Restricts the instantiation of a class to one static object without locks.
const T & Ref(...) const
Return a reference to the inner Singleton object.
Library configuration file.
std::string IntToString(T value, unsigned int base=10)
Converts a value to a string.
Crypto++ library namespace.
Classes for access to the operating system's random number generators.
void OS_GenerateRandomBlock(bool blocking, byte *output, size_t size)
OS_GenerateRandomBlock.
Miscellaneous classes for RNGs.