Mercurial > dropbear
annotate libtomcrypt/src/modes/ecb/ecb_encrypt.c @ 1295:750ec4ec4cbe
Convert #ifdef to #if, other build changes
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 04 May 2016 15:33:40 +0200 |
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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 ecb_encrypt.c |
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15 ECB implementation, encrypt a block, Tom St Denis |
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16 */ |
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17 |
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18 #ifdef LTC_ECB_MODE |
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19 |
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20 /** |
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21 ECB encrypt |
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22 @param pt Plaintext |
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23 @param ct [out] Ciphertext |
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24 @param len The number of octets to process (must be multiple of the cipher block size) |
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25 @param ecb ECB state |
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26 @return CRYPT_OK if successful |
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27 */ |
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28 int ecb_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_ECB *ecb) |
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29 { |
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30 int err; |
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31 LTC_ARGCHK(pt != NULL); |
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32 LTC_ARGCHK(ct != NULL); |
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33 LTC_ARGCHK(ecb != NULL); |
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34 if ((err = cipher_is_valid(ecb->cipher)) != CRYPT_OK) { |
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35 return err; |
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36 } |
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37 if (len % cipher_descriptor[ecb->cipher].block_length) { |
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38 return CRYPT_INVALID_ARG; |
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39 } |
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40 |
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41 /* check for accel */ |
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42 if (cipher_descriptor[ecb->cipher].accel_ecb_encrypt != NULL) { |
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43 return cipher_descriptor[ecb->cipher].accel_ecb_encrypt(pt, ct, len / cipher_descriptor[ecb->cipher].block_length, &ecb->key); |
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44 } else { |
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45 while (len) { |
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46 if ((err = cipher_descriptor[ecb->cipher].ecb_encrypt(pt, ct, &ecb->key)) != CRYPT_OK) { |
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47 return err; |
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48 } |
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49 pt += cipher_descriptor[ecb->cipher].block_length; |
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50 ct += cipher_descriptor[ecb->cipher].block_length; |
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51 len -= cipher_descriptor[ecb->cipher].block_length; |
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52 } |
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53 } |
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54 return CRYPT_OK; |
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55 } |
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56 |
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57 #endif |
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58 |
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59 /* $Source: /cvs/libtom/libtomcrypt/src/modes/ecb/ecb_encrypt.c,v $ */ |
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60 /* $Revision: 1.9 $ */ |
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61 /* $Date: 2006/06/29 01:51:34 $ */ |