Mercurial > dropbear
annotate libtomcrypt/src/modes/f8/f8_setiv.c @ 1804:f0cd000f3bca
Prevent multiple shells being spawned
Existing shells would be leaked.
The old check only caught multiple commands, not shells.
author | Matt Johnston <matt@ucc.asn.au> |
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date | Sat, 06 Mar 2021 23:06:43 +0800 |
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 f8_setiv.c |
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13 F8 implementation, set IV, Tom St Denis |
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14 */ |
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15 |
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16 #ifdef LTC_F8_MODE |
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17 |
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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 f8 The F8 state |
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23 @return CRYPT_OK if successful |
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24 */ |
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25 int f8_setiv(const unsigned char *IV, unsigned long len, symmetric_F8 *f8) |
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26 { |
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27 int err; |
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28 |
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29 LTC_ARGCHK(IV != NULL); |
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30 LTC_ARGCHK(f8 != NULL); |
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31 |
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32 if ((err = cipher_is_valid(f8->cipher)) != CRYPT_OK) { |
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33 return err; |
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34 } |
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35 |
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36 if (len != (unsigned long)f8->blocklen) { |
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37 return CRYPT_INVALID_ARG; |
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38 } |
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39 |
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40 /* force next block */ |
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41 f8->padlen = 0; |
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42 return cipher_descriptor[f8->cipher].ecb_encrypt(IV, f8->IV, &f8->key); |
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43 } |
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44 |
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45 #endif |
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46 |
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47 |
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48 /* ref: $Format:%D$ */ |
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49 /* git commit: $Format:%H$ */ |
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50 /* commit time: $Format:%ai$ */ |