Mercurial > dropbear

annotate libtomcrypt/src/modes/xts/xts_init.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 Source donated by Elliptic Semiconductor Inc (www.ellipticsemi.com) to the LibTom Projects
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13 */
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14
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15 #ifdef LTC_XTS_MODE
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16
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17 /** Start XTS mode
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18 @param cipher The index of the cipher to use
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19 @param key1 The encrypt key
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20 @param key2 The tweak encrypt key
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21 @param keylen The length of the keys (each) in octets
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22 @param num_rounds The number of rounds for the cipher (0 == default)
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23 @param xts [out] XTS structure
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24 Returns CRYPT_OK upon success.
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25 */
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26 int xts_start(int cipher, const unsigned char *key1, const unsigned char *key2, unsigned long keylen, int num_rounds,
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27 symmetric_xts *xts)
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28 {
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29 int err;
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30
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31 /* check inputs */
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32 LTC_ARGCHK(key1 != NULL);
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33 LTC_ARGCHK(key2 != NULL);
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34 LTC_ARGCHK(xts != NULL);
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35
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36 /* check if valid */
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37 if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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38 return err;
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39 }
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40
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41 if (cipher_descriptor[cipher].block_length != 16) {
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42 return CRYPT_INVALID_ARG;
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43 }
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44
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45 /* schedule the two ciphers */
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46 if ((err = cipher_descriptor[cipher].setup(key1, keylen, num_rounds, &xts->key1)) != CRYPT_OK) {
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47 return err;
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48 }
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49 if ((err = cipher_descriptor[cipher].setup(key2, keylen, num_rounds, &xts->key2)) != CRYPT_OK) {
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50 return err;
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51 }
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52 xts->cipher = cipher;
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53
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54 return err;
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55 }
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56
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57 #endif
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58
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59 /* ref: $Format:%D$ */
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60 /* git commit: $Format:%H$ */
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61 /* commit time: $Format:%ai$ */