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annotate libtommath/bn_mp_invmod.c @ 1902:4a6725ac957c

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Revert "Don't include sk keys at all in KEX list" This reverts git commit f972813ecdc7bb981d25b5a63638bd158f1c8e72. The sk algorithms need to remain in the sigalgs list so that they are included in the server-sig-algs ext-info message sent by the server. RFC8308 for server-sig-algs requires that all algorithms are listed (though OpenSSH client 8.4p1 tested doesn't require that)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 24 Mar 2022 13:42:08 +0800
parents 1051e4eea25a
children
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f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents: 1470
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1 #include "tommath_private.h"
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2 #ifdef BN_MP_INVMOD_C
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis */
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4 /* SPDX-License-Identifier: Unlicense */
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6 /* hac 14.61, pp608 */
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7 mp_err mp_invmod(const mp_int *a, const mp_int *b, mp_int *c)
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8 {
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f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents: 1470
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9 /* b cannot be negative and has to be >1 */
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents: 1470
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10 if ((b->sign == MP_NEG) || (mp_cmp_d(b, 1uL) != MP_GT)) {
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Steffen Jaeckel <s_jaeckel@gmx.de>
parents: 1470
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11 return MP_VAL;
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parents: 1470
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12 }
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13
1655
f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
Steffen Jaeckel <s_jaeckel@gmx.de>
parents: 1470
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14 /* if the modulus is odd we can use a faster routine instead */
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parents: 1655
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15 if (MP_HAS(S_MP_INVMOD_FAST) && MP_IS_ODD(b)) {
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parents: 1655
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16 return s_mp_invmod_fast(a, b, c);
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parents: 1470
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17 }
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18
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19 return MP_HAS(S_MP_INVMOD_SLOW)
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20 ? s_mp_invmod_slow(a, b, c)
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21 : MP_VAL;
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22 }
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23 #endif