Mercurial > dropbear
annotate libtomcrypt/src/modes/ofb/ofb_getiv.c @ 1792:2bf1e97ba3cd
Update INSTALL (#113)
Make Git/Mercurial instructions easier to understand
author | Xenhat <commits@xenh.at> |
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date | Thu, 17 Dec 2020 04:35:48 -0500 |
parents | 6dba84798cd5 |
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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 @file ofb_getiv.c |
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13 OFB implementation, get IV, Tom St Denis |
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14 */ |
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15 |
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16 #ifdef LTC_OFB_MODE |
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17 |
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18 /** |
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19 Get the current initialization vector |
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20 @param IV [out] The destination of the initialization vector |
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21 @param len [in/out] The max size and resulting size of the initialization vector |
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22 @param ofb The OFB state |
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23 @return CRYPT_OK if successful |
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24 */ |
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25 int ofb_getiv(unsigned char *IV, unsigned long *len, symmetric_OFB *ofb) |
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26 { |
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27 LTC_ARGCHK(IV != NULL); |
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28 LTC_ARGCHK(len != NULL); |
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29 LTC_ARGCHK(ofb != NULL); |
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30 if ((unsigned long)ofb->blocklen > *len) { |
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31 *len = ofb->blocklen; |
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32 return CRYPT_BUFFER_OVERFLOW; |
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33 } |
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34 XMEMCPY(IV, ofb->IV, ofb->blocklen); |
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35 *len = ofb->blocklen; |
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36 |
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37 return CRYPT_OK; |
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38 } |
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39 |
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40 #endif |
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41 |
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42 /* ref: $Format:%D$ */ |
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43 /* git commit: $Format:%H$ */ |
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44 /* commit time: $Format:%ai$ */ |