Mercurial > dropbear

annotate libtomcrypt/src/modes/ofb/ofb_getiv.c @ 447:278805938dcf

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Patch from Nicolai Ehemann to try binding before going to the background, so that if it exits early (because something's already listening etc) then it will return an exitcode of 1.
author Matt Johnston <matt@ucc.asn.au>
date Thu, 19 Jul 2007 15:54:18 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
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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 * Tom St Denis, [email protected], http://libtomcrypt.com
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file ofb_getiv.c
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15 OFB implementation, get IV, Tom St Denis
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16 */
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17
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18 #ifdef LTC_OFB_MODE
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20 /**
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21 Get the current initial vector
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22 @param IV [out] The destination of the initial vector
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23 @param len [in/out] The max size and resulting size of the initial vector
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24 @param ofb The OFB state
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25 @return CRYPT_OK if successful
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26 */
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27 int ofb_getiv(unsigned char *IV, unsigned long *len, symmetric_OFB *ofb)
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28 {
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29 LTC_ARGCHK(IV != NULL);
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30 LTC_ARGCHK(len != NULL);
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31 LTC_ARGCHK(ofb != NULL);
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32 if ((unsigned long)ofb->blocklen > *len) {
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33 *len = ofb->blocklen;
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34 return CRYPT_BUFFER_OVERFLOW;
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35 }
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36 XMEMCPY(IV, ofb->IV, ofb->blocklen);
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37 *len = ofb->blocklen;
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39 return CRYPT_OK;
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40 }
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42 #endif
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44 /* $Source: /cvs/libtom/libtomcrypt/src/modes/ofb/ofb_getiv.c,v $ */
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45 /* $Revision: 1.6 $ */
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46 /* $Date: 2006/06/29 01:51:34 $ */