/usr/include/crypto++/words.h is in libcrypto++-dev 5.6.4-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | #ifndef CRYPTOPP_WORDS_H
#define CRYPTOPP_WORDS_H
#include "config.h"
#include "misc.h"
NAMESPACE_BEGIN(CryptoPP)
inline size_t CountWords(const word *X, size_t N)
{
while (N && X[N-1]==0)
N--;
return N;
}
inline void SetWords(word *r, word a, size_t n)
{
for (size_t i=0; i<n; i++)
r[i] = a;
}
inline void CopyWords(word *r, const word *a, size_t n)
{
if (r != a)
#if CRYPTOPP_MSC_VERSION
memcpy_s(r, n*WORD_SIZE, a, n*WORD_SIZE);
#else
memcpy(r, a, n*WORD_SIZE);
#endif
}
inline void XorWords(word *r, const word *a, const word *b, size_t n)
{
for (size_t i=0; i<n; i++)
r[i] = a[i] ^ b[i];
}
inline void XorWords(word *r, const word *a, size_t n)
{
for (size_t i=0; i<n; i++)
r[i] ^= a[i];
}
inline void AndWords(word *r, const word *a, const word *b, size_t n)
{
for (size_t i=0; i<n; i++)
r[i] = a[i] & b[i];
}
inline void AndWords(word *r, const word *a, size_t n)
{
for (size_t i=0; i<n; i++)
r[i] &= a[i];
}
inline word ShiftWordsLeftByBits(word *r, size_t n, unsigned int shiftBits)
{
assert (shiftBits<WORD_BITS);
word u, carry=0;
if (shiftBits)
for (size_t i=0; i<n; i++)
{
u = r[i];
r[i] = (u << shiftBits) | carry;
carry = u >> (WORD_BITS-shiftBits);
}
return carry;
}
inline word ShiftWordsRightByBits(word *r, size_t n, unsigned int shiftBits)
{
assert (shiftBits<WORD_BITS);
word u, carry=0;
if (shiftBits)
for (size_t i=n; i>0; i--)
{
u = r[i-1];
r[i-1] = (u >> shiftBits) | carry;
carry = u << (WORD_BITS-shiftBits);
}
return carry;
}
inline void ShiftWordsLeftByWords(word *r, size_t n, size_t shiftWords)
{
shiftWords = STDMIN(shiftWords, n);
if (shiftWords)
{
for (size_t i=n-1; i>=shiftWords; i--)
r[i] = r[i-shiftWords];
SetWords(r, 0, shiftWords);
}
}
inline void ShiftWordsRightByWords(word *r, size_t n, size_t shiftWords)
{
shiftWords = STDMIN(shiftWords, n);
if (shiftWords)
{
for (size_t i=0; i+shiftWords<n; i++)
r[i] = r[i+shiftWords];
SetWords(r+n-shiftWords, 0, shiftWords);
}
}
NAMESPACE_END
#endif
|