Mercurial > dropbear

annotate libtomcrypt/src/encauth/ocb3/ocb3_int_ntz.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
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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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
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10 /**
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11 @file ocb3_int_ntz.c
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12 OCB implementation, INTERNAL ONLY helper, by Tom St Denis
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13 */
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14 #include "tomcrypt.h"
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15
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16 #ifdef LTC_OCB3_MODE
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17
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18 /**
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19 Returns the number of leading zero bits [from lsb up] (internal function)
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20 @param x The 32-bit value to observe
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21 @return The number of bits [from the lsb up] that are zero
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22 */
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23 int ocb3_int_ntz(unsigned long x)
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24 {
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25 int c;
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26 x &= 0xFFFFFFFFUL;
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27 c = 0;
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28 while ((x & 1) == 0) {
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29 ++c;
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30 x >>= 1;
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31 }
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32 return c;
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33 }
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34
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35 #endif
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36
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37 /* ref: $Format:%D$ */
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38 /* git commit: $Format:%H$ */
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39 /* commit time: $Format:%ai$ */