Mercurial > dropbear

annotate libtomcrypt/src/encauth/ocb3/ocb3_int_xor_blocks.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
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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_xor_blocks.c
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12 OCB implementation, INTERNAL ONLY helper, by Karel Miko
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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 Compute xor for two blocks of bytes 'out = block_a XOR block_b' (internal function)
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20 @param out The block of bytes (output)
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21 @param block_a The block of bytes (input)
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22 @param block_b The block of bytes (input)
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23 @param block_len The size of block_a, block_b, out
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24 */
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25 void ocb3_int_xor_blocks(unsigned char *out, const unsigned char *block_a, const unsigned char *block_b, unsigned long block_len)
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26 {
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27 int x;
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28 if (out == block_a) {
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29 for (x = 0; x < (int)block_len; x++) out[x] ^= block_b[x];
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30 }
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31 else {
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32 for (x = 0; x < (int)block_len; x++) out[x] = block_a[x] ^ block_b[x];
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33 }
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34 }
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35
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36 #endif
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37
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38 /* ref: $Format:%D$ */
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39 /* git commit: $Format:%H$ */
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40 /* commit time: $Format:%ai$ */