Mercurial > dropbear

annotate libtomcrypt/src/modes/ctr/ctr_setiv.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 ctr_setiv.c
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13 CTR implementation, set IV, Tom St Denis
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14 */
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16 #ifdef LTC_CTR_MODE
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18 /**
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19 Set an initialization vector
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20 @param IV The initialization vector
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21 @param len The length of the vector (in octets)
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22 @param ctr The CTR state
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23 @return CRYPT_OK if successful
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24 */
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25 int ctr_setiv(const unsigned char *IV, unsigned long len, symmetric_CTR *ctr)
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26 {
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27 int err;
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29 LTC_ARGCHK(IV != NULL);
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30 LTC_ARGCHK(ctr != NULL);
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32 /* bad param? */
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33 if ((err = cipher_is_valid(ctr->cipher)) != CRYPT_OK) {
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34 return err;
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35 }
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37 if (len != (unsigned long)ctr->blocklen) {
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38 return CRYPT_INVALID_ARG;
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39 }
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41 /* set IV */
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42 XMEMCPY(ctr->ctr, IV, len);
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44 /* force next block */
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45 ctr->padlen = 0;
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46 return cipher_descriptor[ctr->cipher].ecb_encrypt(IV, ctr->pad, &ctr->key);
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47 }
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49 #endif
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51
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52 /* ref: $Format:%D$ */
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53 /* git commit: $Format:%H$ */
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54 /* commit time: $Format:%ai$ */