Mercurial > dropbear

annotate libtomcrypt/src/mac/pmac/pmac_shift_xor.c @ 1629:258b57b208ae

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Fix for issue successfull login of disabled user (#78) This commit introduces fix for scenario: 1. Root login disabled on dropbear 2. PAM authentication model enabled While login as root user, after prompt for password user is being notified about login failrue, but after second attempt of prompt for password within same session, login becames succesfull. Signed-off-by: Pawel Rapkiewicz <[email protected]>
author vincentto13 <33652988+vincentto13@users.noreply.github.com>
date Wed, 20 Mar 2019 15:03:40 +0100
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: $Format:%ai$ */