diff options
Diffstat (limited to 'libtommath/bn_s_mp_sqr.c')
| -rw-r--r-- | libtommath/bn_s_mp_sqr.c | 36 |
1 files changed, 12 insertions, 24 deletions
diff --git a/libtommath/bn_s_mp_sqr.c b/libtommath/bn_s_mp_sqr.c index f18233d..505c9f0 100644 --- a/libtommath/bn_s_mp_sqr.c +++ b/libtommath/bn_s_mp_sqr.c @@ -1,28 +1,20 @@ #include "tommath_private.h" #ifdef BN_S_MP_SQR_C -/* LibTomMath, multiple-precision integer library -- Tom St Denis - * - * LibTomMath is a library that provides multiple-precision - * integer arithmetic as well as number theoretic functionality. - * - * The library was designed directly after the MPI library by - * Michael Fromberger but has been written from scratch with - * additional optimizations in place. - * - * SPDX-License-Identifier: Unlicense - */ +/* LibTomMath, multiple-precision integer library -- Tom St Denis */ +/* SPDX-License-Identifier: Unlicense */ /* low level squaring, b = a*a, HAC pp.596-597, Algorithm 14.16 */ -int s_mp_sqr(const mp_int *a, mp_int *b) +mp_err s_mp_sqr(const mp_int *a, mp_int *b) { - mp_int t; - int res, ix, iy, pa; - mp_word r; + mp_int t; + int ix, iy, pa; + mp_err err; + mp_word r; mp_digit u, tmpx, *tmpt; pa = a->used; - if ((res = mp_init_size(&t, (2 * pa) + 1)) != MP_OKAY) { - return res; + if ((err = mp_init_size(&t, (2 * pa) + 1)) != MP_OKAY) { + return err; } /* default used is maximum possible size */ @@ -38,7 +30,7 @@ int s_mp_sqr(const mp_int *a, mp_int *b) t.dp[ix+ix] = (mp_digit)(r & (mp_word)MP_MASK); /* get the carry */ - u = (mp_digit)(r >> (mp_word)DIGIT_BIT); + u = (mp_digit)(r >> (mp_word)MP_DIGIT_BIT); /* left hand side of A[ix] * A[iy] */ tmpx = a->dp[ix]; @@ -59,13 +51,13 @@ int s_mp_sqr(const mp_int *a, mp_int *b) *tmpt++ = (mp_digit)(r & (mp_word)MP_MASK); /* get carry */ - u = (mp_digit)(r >> (mp_word)DIGIT_BIT); + u = (mp_digit)(r >> (mp_word)MP_DIGIT_BIT); } /* propagate upwards */ while (u != 0uL) { r = (mp_word)*tmpt + (mp_word)u; *tmpt++ = (mp_digit)(r & (mp_word)MP_MASK); - u = (mp_digit)(r >> (mp_word)DIGIT_BIT); + u = (mp_digit)(r >> (mp_word)MP_DIGIT_BIT); } } @@ -75,7 +67,3 @@ int s_mp_sqr(const mp_int *a, mp_int *b) return MP_OKAY; } #endif - -/* ref: HEAD -> master, tag: v1.1.0 */ -/* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ -/* commit time: 2019-01-28 20:32:32 +0100 */ |