text: #ifndef CRYPTOPP_CONFIG_H
  #define CRYPTOPP_CONFIG_H
  
  // ***************** Important Settings ********************
  
  // define this if running on a big-endian CPU
  #if !defined(IS_LITTLE_ENDIAN) && (defined(__BIG_ENDIAN__) || defined(__sparc) || defined(__sparc__) || defined(__hppa__) || defined(__MIPSEB__) || defined(__ARMEB__) || (defined(__MWERKS__) && !defined(__INTEL__)))
  #	define IS_BIG_ENDIAN
  #endif
  
  // define this if running on a little-endian CPU
  // big endian will be assumed if IS_LITTLE_ENDIAN is not defined
  #ifndef IS_BIG_ENDIAN
  #	define IS_LITTLE_ENDIAN
  #endif
  
  // define this if you want to disable all OS-dependent features,
  // such as sockets and OS-provided random number generators
  #define NO_OS_DEPENDENCE
  
  // Define this to use features provided by Microsoft's CryptoAPI.
  // Currently the only feature used is random number generation.
  // This macro will be ignored if NO_OS_DEPENDENCE is defined.
  #define USE_MS_CRYPTOAPI
  
  // Define this to 1 to enforce the requirement in FIPS 186-2 Change Notice 1 that only 1024 bit moduli be used
  #ifndef DSA_1024_BIT_MODULUS_ONLY
  #	define DSA_1024_BIT_MODULUS_ONLY 1
  #endif
  
  // ***************** Less Important Settings ***************
  
  // define this to retain (as much as possible) old deprecated function and class names
  // #define CRYPTOPP_MAINTAIN_BACKWARDS_COMPATIBILITY
  
  #define GZIP_OS_CODE 0
  
  // Try this if your CPU has 256K internal cache or a slow multiply instruction
  // and you want a (possibly) faster IDEA implementation using log tables
  // #define IDEA_LARGECACHE
  
  // Define this if, for the linear congruential RNG, you want to use
  // the original constants as specified in S.K. Park and K.W. Miller's
  // CACM paper.
  // #define LCRNG_ORIGINAL_NUMBERS
  
  // choose which style of sockets to wrap (mostly useful for cygwin which has both)
  #define PREFER_BERKELEY_STYLE_SOCKETS
  // #define PREFER_WINDOWS_STYLE_SOCKETS
  
  // set the name of Rijndael cipher, was "Rijndael" before version 5.3
  #define CRYPTOPP_RIJNDAEL_NAME "AES"
  
  // ***************** Important Settings Again ********************
  // But the defaults should be ok.
  
  // namespace support is now required
  #ifdef NO_NAMESPACE
  #	error namespace support is now required
  #endif
  
  // Define this to workaround a Microsoft CryptoAPI bug where
  // each call to CryptAcquireContext causes a 100 KB memory leak.
  // Defining this will cause Crypto++ to make only one call to CryptAcquireContext.
  #define WORKAROUND_MS_BUG_Q258000
  
  #ifdef CRYPTOPP_DOXYGEN_PROCESSING
  // Avoid putting "CryptoPP::" in front of everything in Doxygen output
  #	define CryptoPP
  #	define NAMESPACE_BEGIN(x)
  #	define NAMESPACE_END
  // Get Doxygen to generate better documentation for these typedefs
  #	define DOCUMENTED_TYPEDEF(x, y) class y : public x {};
  #else
  #	define NAMESPACE_BEGIN(x) namespace x {
  #	define NAMESPACE_END }
  #	define DOCUMENTED_TYPEDEF(x, y) typedef x y;
  #endif
  #define ANONYMOUS_NAMESPACE_BEGIN namespace {
  #define USING_NAMESPACE(x) using namespace x;
  #define DOCUMENTED_NAMESPACE_BEGIN(x) namespace x {
  #define DOCUMENTED_NAMESPACE_END }
  
  // What is the type of the third parameter to bind?
  // For Unix, the new standard is ::socklen_t (typically unsigned int), and the old standard is int.
  // Unfortunately there is no way to tell whether or not socklen_t is defined.
  // To work around this, TYPE_OF_SOCKLEN_T is a macro so that you can change it from the makefile.
  #ifndef TYPE_OF_SOCKLEN_T
  #	if defined(_WIN32) || defined(__CYGWIN__)
  #		define TYPE_OF_SOCKLEN_T int
  #	else
  #		define TYPE_OF_SOCKLEN_T ::socklen_t
  #	endif
  #endif
  
  #if defined(__CYGWIN__) && defined(PREFER_WINDOWS_STYLE_SOCKETS)
  #	define __USE_W32_SOCKETS
  #endif
  
  typedef unsigned char byte;		// put in global namespace to avoid ambiguity with other byte typedefs
  
  NAMESPACE_BEGIN(CryptoPP)
  
  typedef unsigned short word16;
  typedef unsigned int word32;
  
  #if defined(_MSC_VER) || defined(__BORLANDC__)
  	typedef unsigned __int64 word64;
  	#define W64LIT(x) x##ui64
  #else
  	typedef unsigned long long word64;
  	#define W64LIT(x) x##ULL
  #endif
  
  // define large word type, used for file offsets and such
  typedef word64 lword;
  const lword LWORD_MAX = W64LIT(0xffffffffffffffff);
  
  #ifdef __GNUC__
  	#define CRYPTOPP_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
  #endif
  
  // define hword, word, and dword. these are used for multiprecision integer arithmetic
  // Intel compiler won't have _umul128 until version 10.0. See http://softwarecommunity.intel.com/isn/Community/en-US/forums/thread/30231625.aspx
  #if (defined(_MSC_VER) && (!defined(__INTEL_COMPILER) || __INTEL_COMPILER >= 1000) && (defined(_M_X64) || defined(_M_IA64))) || (defined(__DECCXX) && defined(__alpha__)) || (defined(__INTEL_COMPILER) && defined(__x86_64__)) || (defined(__SUNPRO_CC) && defined(__x86_64__))
  	typedef word32 hword;
  	typedef word64 word;
  #else
  	#define CRYPTOPP_NATIVE_DWORD_AVAILABLE
  	#if defined(__alpha__) || defined(__ia64__) || defined(_ARCH_PPC64) || defined(__x86_64__) || defined(__mips64) || defined(__sparc64__)
  		#if defined(__GNUC__) && !defined(__INTEL_COMPILER) && !(CRYPTOPP_GCC_VERSION == 40001 && defined(__APPLE__)) && CRYPTOPP_GCC_VERSION >= 30400
  			// GCC 4.0.1 on MacOS X is missing __umodti3 and __udivti3
  			// mode(TI) division broken on amd64 with GCC earlier than GCC 3.4
  			typedef word32 hword;
  			typedef word64 word;
  			typedef __uint128_t dword;
  			typedef __uint128_t word128;
  			#define CRYPTOPP_WORD128_AVAILABLE
  		#else
  			// if we're here, it means we're on a 64-bit CPU but we don't have a way to obtain 128-bit multiplication results
  			typedef word16 hword;
  			typedef word32 word;
  			typedef word64 dword;
  		#endif
  	#else
  		// being here means the native register size is probably 32 bits or less
  		#define CRYPTOPP_BOOL_SLOW_WORD64 1
  		typedef word16 hword;
  		typedef word32 word;
  		typedef word64 dword;
  	#endif
  #endif
  #ifndef CRYPTOPP_BOOL_SLOW_WORD64
  	#define CRYPTOPP_BOOL_SLOW_WORD64 0
  #endif
  
  const unsigned int WORD_SIZE = sizeof(word);
  const unsigned int WORD_BITS = WORD_SIZE * 8;
  
  NAMESPACE_END
  
  #ifndef CRYPTOPP_L1_CACHE_LINE_SIZE
  	// This should be a lower bound on the L1 cache line size. It's used for defense against timing attacks.
  	#if defined(_M_X64) || defined(__x86_64__)
  		#define CRYPTOPP_L1_CACHE_LINE_SIZE 64
  	#else
  		// L1 cache line size is 32 on Pentium III and earlier
  		#define CRYPTOPP_L1_CACHE_LINE_SIZE 32
  	#endif
  #endif
  
  #if defined(_MSC_VER)
  	#if _MSC_VER == 1200
  		#include <malloc.h>
  	#endif
  	#if _MSC_VER > 1200 || defined(_mm_free)
  		#define CRYPTOPP_MSVC6PP_OR_LATER		// VC 6 processor pack or later
  	#else
  		#define CRYPTOPP_MSVC6_NO_PP			// VC 6 without processor pack
  	#endif
  #endif
  
  #ifndef CRYPTOPP_ALIGN_DATA
  	#if defined(CRYPTOPP_MSVC6PP_OR_LATER)
  		#define CRYPTOPP_ALIGN_DATA(x) __declspec(align(x))
  	#elif defined(__GNUC__)
  		#define CRYPTOPP_ALIGN_DATA(x) __attribute__((aligned(x)))
  	#else
  		#define CRYPTOPP_ALIGN_DATA(x)
  	#endif
  #endif
  
  #ifndef CRYPTOPP_SECTION_ALIGN16
  	#if defined(__GNUC__) && !defined(__APPLE__)
  		// the alignment attribute doesn't seem to work without this section attribute when -fdata-sections is turned on
  		#define CRYPTOPP_SECTION_ALIGN16 __attribute__((section ("CryptoPP_Align16")))
  	#else
  		#define CRYPTOPP_SECTION_ALIGN16
  	#endif
  #endif
  
  #if defined(_MSC_VER) || defined(__fastcall)
  	#define CRYPTOPP_FASTCALL __fastcall
  #else
  	#define CRYPTOPP_FASTCALL
  #endif
  
  // VC60 workaround: it doesn't allow typename in some places
  #if defined(_MSC_VER) && (_MSC_VER < 1300)
  #define CPP_TYPENAME
  #else
  #define CPP_TYPENAME typename
  #endif
  
  // VC60 workaround: can't cast unsigned __int64 to float or double
  #if defined(_MSC_VER) && !defined(CRYPTOPP_MSVC6PP_OR_LATER)
  #define CRYPTOPP_VC6_INT64 (__int64)
  #else
  #define CRYPTOPP_VC6_INT64
  #endif
  
  #ifdef _MSC_VER
  #define CRYPTOPP_NO_VTABLE __declspec(novtable)
  #else
  #define CRYPTOPP_NO_VTABLE
  #endif
  
  #ifdef _MSC_VER
  	// 4231: nonstandard extension used : 'extern' before template explicit instantiation
  	// 4250: dominance
  	// 4251: member needs to have dll-interface
  	// 4275: base needs to have dll-interface
  	// 4660: explicitly instantiating a class that's already implicitly instantiated
  	// 4661: no suitable definition provided for explicit template instantiation request
  	// 4786: identifer was truncated in debug information
  	// 4355: 'this' : used in base member initializer list
  	// 4910: '__declspec(dllexport)' and 'extern' are incompatible on an explicit instantiation
  #	pragma warning(disable: 4231 4250 4251 4275 4660 4661 4786 4355 4910)
  #endif
  
  #ifdef __BORLANDC__
  // 8037: non-const function called for const object. needed to work around BCB2006 bug
  #	pragma warn -8037
  #endif
  
  #if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__MWERKS__) || defined(_STLPORT_VERSION)
  #define CRYPTOPP_DISABLE_UNCAUGHT_EXCEPTION
  #endif
  
  #ifndef CRYPTOPP_DISABLE_UNCAUGHT_EXCEPTION
  #define CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE
  #endif
  
  #ifdef CRYPTOPP_DISABLE_X86ASM		// for backwards compatibility: this macro had both meanings
  #define CRYPTOPP_DISABLE_ASM
  #define CRYPTOPP_DISABLE_SSE2
  #endif
  
  #if !defined(CRYPTOPP_DISABLE_ASM) && ((defined(_MSC_VER) && defined(_M_IX86)) || (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))))
  	// C++Builder 2010 does not allow "call label" where label is defined within inline assembly
  	#define CRYPTOPP_X86_ASM_AVAILABLE
  
  	#if !defined(CRYPTOPP_DISABLE_SSE2) && (defined(CRYPTOPP_MSVC6PP_OR_LATER) || CRYPTOPP_GCC_VERSION >= 30300)
  		#define CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE 1
  	#else
  		#define CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE 0
  	#endif
  
  	// SSSE3 was actually introduced in GNU as 2.17, which was released 6/23/2006, but we can't tell what version of binutils is installed.
  	// GCC 4.1.2 was released on 2/13/2007, so we'll use that as a proxy for the binutils version.
  	#if !defined(CRYPTOPP_DISABLE_SSSE3) && (_MSC_VER >= 1400 || CRYPTOPP_GCC_VERSION >= 40102)
  		#define CRYPTOPP_BOOL_SSSE3_ASM_AVAILABLE 1
  	#else
  		#define CRYPTOPP_BOOL_SSSE3_ASM_AVAILABLE 0
  	#endif
  #endif
  
  #if !defined(CRYPTOPP_DISABLE_ASM) && defined(_MSC_VER) && defined(_M_X64)
  	#define CRYPTOPP_X64_MASM_AVAILABLE
  #endif
  
  #if !defined(CRYPTOPP_DISABLE_ASM) && defined(__GNUC__) && defined(__x86_64__)
  	#define CRYPTOPP_X64_ASM_AVAILABLE
  #endif
  
  #if !defined(CRYPTOPP_DISABLE_SSE2) && (defined(CRYPTOPP_MSVC6PP_OR_LATER) || defined(__SSE2__))
  	#define CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE 1
  #else
  	#define CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE 0
  #endif
  
  #if !defined(CRYPTOPP_DISABLE_SSSE3) && !defined(CRYPTOPP_DISABLE_AESNI) && CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE && (CRYPTOPP_GCC_VERSION >= 40400 || _MSC_FULL_VER >= 150030729 || __INTEL_COMPILER >= 1110)
  	#define CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE 1
  #else
  	#define CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE 0
  #endif
  
  #if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE || CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)
  	#define CRYPTOPP_BOOL_ALIGN16_ENABLED 1
  #else
  	#define CRYPTOPP_BOOL_ALIGN16_ENABLED 0
  #endif
  
  // how to allocate 16-byte aligned memory (for SSE2)
  #if defined(CRYPTOPP_MSVC6PP_OR_LATER)
  	#define CRYPTOPP_MM_MALLOC_AVAILABLE
  #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
  	#define CRYPTOPP_MALLOC_ALIGNMENT_IS_16
  #elif defined(__linux__) || defined(__sun__) || defined(__CYGWIN__)
  	#define CRYPTOPP_MEMALIGN_AVAILABLE
  #else
  	#define CRYPTOPP_NO_ALIGNED_ALLOC
  #endif
  
  // how to disable inlining
  #if defined(_MSC_VER) && _MSC_VER >= 1300
  #	define CRYPTOPP_NOINLINE_DOTDOTDOT
  #	define CRYPTOPP_NOINLINE __declspec(noinline)
  #elif defined(__GNUC__)
  #	define CRYPTOPP_NOINLINE_DOTDOTDOT
  #	define CRYPTOPP_NOINLINE __attribute__((noinline))
  #else
  #	define CRYPTOPP_NOINLINE_DOTDOTDOT ...
  #	define CRYPTOPP_NOINLINE 
  #endif
  
  // how to declare class constants
  #if (defined(_MSC_VER) && _MSC_VER <= 1300) || defined(__INTEL_COMPILER)
  #	define CRYPTOPP_CONSTANT(x) enum {x};
  #else
  #	define CRYPTOPP_CONSTANT(x) static const int x;
  #endif
  
  #if defined(_M_X64) || defined(__x86_64__)
  	#define CRYPTOPP_BOOL_X64 1
  #else
  	#define CRYPTOPP_BOOL_X64 0
  #endif
  
  // see http://predef.sourceforge.net/prearch.html
  #if defined(_M_IX86) || defined(__i386__) || defined(__i386) || defined(_X86_) || defined(__I86__) || defined(__INTEL__)
  	#define CRYPTOPP_BOOL_X86 1
  #else
  	#define CRYPTOPP_BOOL_X86 0
  #endif
  
  #if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X86 || defined(__powerpc__)
  	#define CRYPTOPP_ALLOW_UNALIGNED_DATA_ACCESS
  #endif
  
  #define CRYPTOPP_VERSION 561
  
  // ***************** determine availability of OS features ********************
  
  #ifndef NO_OS_DEPENDENCE
  
  #if defined(_WIN32) || defined(__CYGWIN__)
  #define CRYPTOPP_WIN32_AVAILABLE
  #endif
  
  #if defined(__unix__) || defined(__MACH__) || defined(__NetBSD__) || defined(__sun)
  #define CRYPTOPP_UNIX_AVAILABLE
  #endif
  
  #if defined(CRYPTOPP_WIN32_AVAILABLE) || defined(CRYPTOPP_UNIX_AVAILABLE)
  #	define HIGHRES_TIMER_AVAILABLE
  #endif
  
  #ifdef CRYPTOPP_UNIX_AVAILABLE
  #	define HAS_BERKELEY_STYLE_SOCKETS
  #endif
  
  #ifdef CRYPTOPP_WIN32_AVAILABLE
  #	define HAS_WINDOWS_STYLE_SOCKETS
  #endif
  
  #if defined(HIGHRES_TIMER_AVAILABLE) && (defined(HAS_BERKELEY_STYLE_SOCKETS) || defined(HAS_WINDOWS_STYLE_SOCKETS))
  #	define SOCKETS_AVAILABLE
  #endif
  
  #if defined(HAS_WINDOWS_STYLE_SOCKETS) && (!defined(HAS_BERKELEY_STYLE_SOCKETS) || defined(PREFER_WINDOWS_STYLE_SOCKETS))
  #	define USE_WINDOWS_STYLE_SOCKETS
  #else
  #	define USE_BERKELEY_STYLE_SOCKETS
  #endif
  
  #if defined(HIGHRES_TIMER_AVAILABLE) && defined(CRYPTOPP_WIN32_AVAILABLE) && !defined(USE_BERKELEY_STYLE_SOCKETS)
  #	define WINDOWS_PIPES_AVAILABLE
  #endif
  
  #if defined(CRYPTOPP_WIN32_AVAILABLE) && defined(USE_MS_CRYPTOAPI)
  #	define NONBLOCKING_RNG_AVAILABLE
  #	define OS_RNG_AVAILABLE
  #endif
  
  #if defined(CRYPTOPP_UNIX_AVAILABLE) || defined(CRYPTOPP_DOXYGEN_PROCESSING)
  #	define NONBLOCKING_RNG_AVAILABLE
  #	define BLOCKING_RNG_AVAILABLE
  #	define OS_RNG_AVAILABLE
  #	define HAS_PTHREADS
  #	define THREADS_AVAILABLE
  #endif
  
  #ifdef CRYPTOPP_WIN32_AVAILABLE
  #	define HAS_WINTHREADS
  #	define THREADS_AVAILABLE
  #endif
  
  #endif	// NO_OS_DEPENDENCE
  
  // ***************** DLL related ********************
  
  #if defined(CRYPTOPP_WIN32_AVAILABLE) && !defined(CRYPTOPP_DOXYGEN_PROCESSING)
  
  #ifdef CRYPTOPP_EXPORTS
  #define CRYPTOPP_IS_DLL
  #define CRYPTOPP_DLL __declspec(dllexport)
  #elif defined(CRYPTOPP_IMPORTS)
  #define CRYPTOPP_IS_DLL
  #define CRYPTOPP_DLL __declspec(dllimport)
  #else
  #define CRYPTOPP_DLL
  #endif
  
  #define CRYPTOPP_API __cdecl
  
  #else	// CRYPTOPP_WIN32_AVAILABLE
  
  #define CRYPTOPP_DLL
  #define CRYPTOPP_API
  
  #endif	// CRYPTOPP_WIN32_AVAILABLE
  
  #if defined(__MWERKS__)
  #define CRYPTOPP_EXTERN_DLL_TEMPLATE_CLASS extern class CRYPTOPP_DLL
  #elif defined(__BORLANDC__) || defined(__SUNPRO_CC)
  #define CRYPTOPP_EXTERN_DLL_TEMPLATE_CLASS template class CRYPTOPP_DLL
  #else
  #define CRYPTOPP_EXTERN_DLL_TEMPLATE_CLASS extern template class CRYPTOPP_DLL
  #endif
  
  #if defined(CRYPTOPP_MANUALLY_INSTANTIATE_TEMPLATES) && !defined(CRYPTOPP_IMPORTS)
  #define CRYPTOPP_DLL_TEMPLATE_CLASS template class CRYPTOPP_DLL
  #else
  #define CRYPTOPP_DLL_TEMPLATE_CLASS CRYPTOPP_EXTERN_DLL_TEMPLATE_CLASS
  #endif
  
  #if defined(__MWERKS__)
  #define CRYPTOPP_EXTERN_STATIC_TEMPLATE_CLASS extern class
  #elif defined(__BORLANDC__) || defined(__SUNPRO_CC)
  #define CRYPTOPP_EXTERN_STATIC_TEMPLATE_CLASS template class
  #else
  #define CRYPTOPP_EXTERN_STATIC_TEMPLATE_CLASS extern template class
  #endif
  
  #if defined(CRYPTOPP_MANUALLY_INSTANTIATE_TEMPLATES) && !defined(CRYPTOPP_EXPORTS)
  #define CRYPTOPP_STATIC_TEMPLATE_CLASS template class
  #else
  #define CRYPTOPP_STATIC_TEMPLATE_CLASS CRYPTOPP_EXTERN_STATIC_TEMPLATE_CLASS
  #endif
  
  #endif
  