2 #ifdef BN_MP_READ_UNSIGNED_BIN_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality.
8 * The library was designed directly after the MPI library by
9 * Michael Fromberger but has been written from scratch with
10 * additional optimizations in place.
12 * The library is free for all purposes without any express
15 * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
18 /* reads a unsigned char array, assumes the msb is stored first [big endian] */
19 int mp_read_unsigned_bin (mp_int * a, const unsigned char *b, int c)
23 /* make sure there are at least two digits */
25 if ((res = mp_grow(a, 2)) != MP_OKAY) {
33 /* read the bytes in */
35 if ((res = mp_mul_2d (a, 8, a)) != MP_OKAY) {
43 a->dp[0] = (*b & MP_MASK);
44 a->dp[1] |= ((*b++ >> 7U) & 1);
53 /* $Source: /cvs/libtom/libtommath/bn_mp_read_unsigned_bin.c,v $ */
54 /* $Revision: 1.4 $ */
55 /* $Date: 2006/03/31 14:18:44 $ */