// misc.cpp - written and placed in the public domain by Wei Dai #include "pch.h" #ifndef CRYPTOPP_IMPORTS #include "misc.h" #include "words.h" #include <new> NAMESPACE_BEGIN(CryptoPP) void xorbuf(byte *buf, const byte *mask, size_t count) { size_t i; if (IsAligned<word32>(buf) && IsAligned<word32>(mask)) { #if defined(WORD64_AVAILABLE) && !defined(CRYPTOPP_SLOW_WORD64) if (IsAligned<word64>(buf) && IsAligned<word64>(mask)) { for (i=0; i<count/8; i++) ((word64*)buf)[i] ^= ((word64*)mask)[i]; count -= 8*i; if (!count) return; buf += 8*i; mask += 8*i; } #endif for (i=0; i<count/4; i++) ((word32*)buf)[i] ^= ((word32*)mask)[i]; count -= 4*i; if (!count) return; buf += 4*i; mask += 4*i; } for (i=0; i<count; i++) buf[i] ^= mask[i]; } void xorbuf(byte *output, const byte *input, const byte *mask, size_t count) { size_t i; if (IsAligned<word32>(output) && IsAligned<word32>(input) && IsAligned<word32>(mask)) { #if defined(WORD64_AVAILABLE) && !defined(CRYPTOPP_SLOW_WORD64) if (IsAligned<word64>(output) && IsAligned<word64>(input) && IsAligned<word64>(mask)) { for (i=0; i<count/8; i++) ((word64*)output)[i] = ((word64*)input)[i] ^ ((word64*)mask)[i]; count -= 8*i; if (!count) return; output += 8*i; input += 8*i; mask += 8*i; } #endif for (i=0; i<count/4; i++) ((word32*)output)[i] = ((word32*)input)[i] ^ ((word32*)mask)[i]; count -= 4*i; if (!count) return; output += 4*i; input += 4*i; mask += 4*i; } for (i=0; i<count; i++) output[i] = input[i] ^ mask[i]; } #if !(defined(_MSC_VER) && (_MSC_VER < 1300)) using std::new_handler; using std::set_new_handler; #endif void CallNewHandler() { new_handler newHandler = set_new_handler(NULL); if (newHandler) set_new_handler(newHandler); if (newHandler) newHandler(); else throw std::bad_alloc(); } NAMESPACE_END #endif