Mercurial > dropbear

annotate libtomcrypt/src/mac/pmac/pmac_shift_xor.c @ 1156:a8f4dade70e5

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avoid getpass when not used some systems (like android's bionic) do not provide getpass. you can disable ENABLE_CLI_PASSWORD_AUTH & ENABLE_CLI_INTERACT_AUTH to avoid its use (and rely on pubkey auth), but the link still fails because the support file calls getpass. do not define this func if both of those auth methods are not used.
author Mike Frysinger <vapier@gentoo.org>
date Wed, 21 Oct 2015 22:39:55 +0800
parents 0cbe8f6dbf9e
children f849a5ca2efc
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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 * Tom St Denis, [email protected], http://libtomcrypt.com
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file pmac_shift_xor.c
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15 PMAC implementation, internal function, by Tom St Denis
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16 */
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17
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18 #ifdef LTC_PMAC
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20 /**
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21 Internal function. Performs the state update (adding correct multiple)
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22 @param pmac The PMAC state.
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23 */
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24 void pmac_shift_xor(pmac_state *pmac)
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25 {
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26 int x, y;
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27 y = pmac_ntz(pmac->block_index++);
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28 #ifdef LTC_FAST
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29 for (x = 0; x < pmac->block_len; x += sizeof(LTC_FAST_TYPE)) {
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30 *((LTC_FAST_TYPE*)((unsigned char *)pmac->Li + x)) ^=
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31 *((LTC_FAST_TYPE*)((unsigned char *)pmac->Ls[y] + x));
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32 }
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33 #else
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34 for (x = 0; x < pmac->block_len; x++) {
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35 pmac->Li[x] ^= pmac->Ls[y][x];
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36 }
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37 #endif
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38 }
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40 #endif
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42 /* $Source: /cvs/libtom/libtomcrypt/src/mac/pmac/pmac_shift_xor.c,v $ */
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43 /* $Revision: 1.6 $ */
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44 /* $Date: 2006/11/03 00:39:49 $ */