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annotate pmac_file.c @ 138:b1edc9158f6c libtomcrypt

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Pristine compilation works
author Matt Johnston <matt@ucc.asn.au>
date Fri, 17 Dec 2004 06:27:09 +0000
parents d7da3b1e1540
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 * Tom St Denis, [email protected], http://libtomcrypt.org
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10 */
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11
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12 /* PMAC implementation by Tom St Denis */
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13 #include "mycrypt.h"
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14
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15 #ifdef PMAC
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16
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17 int pmac_file(int cipher,
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18 const unsigned char *key, unsigned long keylen,
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19 const char *filename,
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20 unsigned char *out, unsigned long *outlen)
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21 {
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22 #ifdef NO_FILE
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23 return CRYPT_NOP;
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24 #else
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25 int err, x;
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26 pmac_state pmac;
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27 FILE *in;
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28 unsigned char buf[512];
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29
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30
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31 _ARGCHK(key != NULL);
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32 _ARGCHK(filename != NULL);
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33 _ARGCHK(out != NULL);
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34 _ARGCHK(outlen != NULL);
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35
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36 in = fopen(filename, "rb");
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37 if (in == NULL) {
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38 return CRYPT_FILE_NOTFOUND;
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39 }
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40
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41 if ((err = pmac_init(&pmac, cipher, key, keylen)) != CRYPT_OK) {
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42 fclose(in);
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43 return err;
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44 }
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45
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46 do {
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47 x = fread(buf, 1, sizeof(buf), in);
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48 if ((err = pmac_process(&pmac, buf, x)) != CRYPT_OK) {
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49 fclose(in);
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50 return err;
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51 }
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52 } while (x == sizeof(buf));
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53 fclose(in);
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54
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55 if ((err = pmac_done(&pmac, out, outlen)) != CRYPT_OK) {
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56 return err;
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57 }
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58
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59 #ifdef CLEAN_STACK
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60 zeromem(buf, sizeof(buf));
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61 #endif
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62
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63 return CRYPT_OK;
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64 #endif
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65 }
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66
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67 #endif