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annotate libtommath/bn_mp_complement.c @ 1669:3080aed32bf1

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scp.c: Port OpenSSH CVE-2018-20685 fix (#80)
author Haelwenn Monnier <contact+github.com@hacktivis.me>
date Mon, 25 May 2020 14:54:29 +0200
parents f52919ffd3b1
children 1051e4eea25a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1655
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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1 #include "tommath_private.h"
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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2 #ifdef BN_MP_COMPLEMENT_C
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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4 *
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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5 * LibTomMath is a library that provides multiple-precision
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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6 * integer arithmetic as well as number theoretic functionality.
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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7 *
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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8 * The library was designed directly after the MPI library by
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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9 * Michael Fromberger but has been written from scratch with
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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10 * additional optimizations in place.
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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11 *
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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12 * SPDX-License-Identifier: Unlicense
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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13 */
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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14
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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15 /* b = ~a */
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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16 int mp_complement(const mp_int *a, mp_int *b)
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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17 {
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Steffen Jaeckel <s_jaeckel@gmx.de>
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18 int res = mp_neg(a, b);
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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19 return (res == MP_OKAY) ? mp_sub_d(b, 1uL, b) : res;
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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20 }
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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21 #endif
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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22
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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23 /* ref: HEAD -> master, tag: v1.1.0 */
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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24 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents:
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25 /* commit time: 2019-01-28 20:32:32 +0100 */