Mercurial > dropbear

annotate libtomcrypt/src/modes/cbc/cbc_start.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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11 /**
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12 @file cbc_start.c
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13 CBC implementation, start chain, Tom St Denis
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14 */
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16 #ifdef LTC_CBC_MODE
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18 /**
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19 Initialize a CBC context
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20 @param cipher The index of the cipher desired
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21 @param IV The initialization vector
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22 @param key The secret key
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23 @param keylen The length of the secret key (octets)
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24 @param num_rounds Number of rounds in the cipher desired (0 for default)
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25 @param cbc The CBC state to initialize
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26 @return CRYPT_OK if successful
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27 */
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28 int cbc_start(int cipher, const unsigned char *IV, const unsigned char *key,
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29 int keylen, int num_rounds, symmetric_CBC *cbc)
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30 {
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31 int x, err;
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32
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33 LTC_ARGCHK(IV != NULL);
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34 LTC_ARGCHK(key != NULL);
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35 LTC_ARGCHK(cbc != NULL);
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37 /* bad param? */
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38 if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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39 return err;
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40 }
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42 /* setup cipher */
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43 if ((err = cipher_descriptor[cipher].setup(key, keylen, num_rounds, &cbc->key)) != CRYPT_OK) {
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44 return err;
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45 }
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47 /* copy IV */
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48 cbc->blocklen = cipher_descriptor[cipher].block_length;
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49 cbc->cipher = cipher;
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50 for (x = 0; x < cbc->blocklen; x++) {
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51 cbc->IV[x] = IV[x];
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52 }
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53 return CRYPT_OK;
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54 }
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56 #endif
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57
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58 /* ref: $Format:%D$ */
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59 /* git commit: $Format:%H$ */
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60 /* commit time: $Format:%ai$ */