Mercurial > dropbear

annotate libtomcrypt/src/mac/pmac/pmac_shift_xor.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 6dba84798cd5
children
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 */
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9 #include "tomcrypt.h"
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10
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11 /**
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12 @file pmac_shift_xor.c
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13 PMAC implementation, internal function, by Tom St Denis
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14 */
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16 #ifdef LTC_PMAC
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18 /**
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19 Internal function. Performs the state update (adding correct multiple)
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20 @param pmac The PMAC state.
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21 */
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22 void pmac_shift_xor(pmac_state *pmac)
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23 {
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24 int x, y;
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25 y = pmac_ntz(pmac->block_index++);
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26 #ifdef LTC_FAST
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27 for (x = 0; x < pmac->block_len; x += sizeof(LTC_FAST_TYPE)) {
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28 *(LTC_FAST_TYPE_PTR_CAST((unsigned char *)pmac->Li + x)) ^=
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29 *(LTC_FAST_TYPE_PTR_CAST((unsigned char *)pmac->Ls[y] + x));
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30 }
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31 #else
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32 for (x = 0; x < pmac->block_len; x++) {
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33 pmac->Li[x] ^= pmac->Ls[y][x];
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34 }
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35 #endif
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36 }
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38 #endif
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39
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40 /* ref: $Format:%D$ */
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41 /* git commit: $Format:%H$ */
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42 /* commit time: $Format:%ai$ */