Mercurial > dropbear

annotate libtomcrypt/src/mac/f9/f9_file.c @ 1831:0a3d02c66bf6

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Comment on reason for DROPBEAR_MAX_PASSWORD_LEN limit
author Matt Johnston <matt@codeconstruct.com.au>
date Tue, 12 Oct 2021 21:29:25 +0800
parents e9dba7abd939
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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diff changeset
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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diff changeset
2 *
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diff changeset
3 * LibTomCrypt is a library that provides various cryptographic
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diff changeset
4 * algorithms in a highly modular and flexible manner.
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diff changeset
5 *
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6 * The library is free for all purposes without any express
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diff changeset
7 * guarantee it works.
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diff changeset
8 */
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diff changeset
9 #include "tomcrypt.h"
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10
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
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diff changeset
11 /**
382
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diff changeset
12 @file f9_file.c
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diff changeset
13 f9 support, process a file, Tom St Denis
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14 */
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15
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diff changeset
16 #ifdef LTC_F9_MODE
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17
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18 /**
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diff changeset
19 f9 a file
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20 @param cipher The index of the cipher desired
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21 @param key The secret key
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22 @param keylen The length of the secret key (octets)
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
23 @param fname The name of the file you wish to f9
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24 @param out [out] Where the authentication tag is to be stored
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25 @param outlen [in/out] The max size and resulting size of the authentication tag
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26 @return CRYPT_OK if successful, CRYPT_NOP if file support has been disabled
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27 */
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28 int f9_file(int cipher,
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29 const unsigned char *key, unsigned long keylen,
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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30 const char *fname,
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31 unsigned char *out, unsigned long *outlen)
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32 {
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diff changeset
33 #ifdef LTC_NO_FILE
1711
e9dba7abd939 Merge libtomcrypt v1.18.2
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34 LTC_UNUSED_PARAM(cipher);
e9dba7abd939 Merge libtomcrypt v1.18.2
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35 LTC_UNUSED_PARAM(key);
e9dba7abd939 Merge libtomcrypt v1.18.2
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36 LTC_UNUSED_PARAM(keylen);
e9dba7abd939 Merge libtomcrypt v1.18.2
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37 LTC_UNUSED_PARAM(fname);
e9dba7abd939 Merge libtomcrypt v1.18.2
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38 LTC_UNUSED_PARAM(out);
e9dba7abd939 Merge libtomcrypt v1.18.2
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39 LTC_UNUSED_PARAM(outlen);
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40 return CRYPT_NOP;
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41 #else
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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42 size_t x;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
43 int err;
382
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diff changeset
44 f9_state f9;
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45 FILE *in;
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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46 unsigned char *buf;
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47
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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48 LTC_ARGCHK(key != NULL);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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49 LTC_ARGCHK(fname != NULL);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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50 LTC_ARGCHK(out != NULL);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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51 LTC_ARGCHK(outlen != NULL);
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52
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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53 if ((buf = XMALLOC(LTC_FILE_READ_BUFSIZE)) == NULL) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
54 return CRYPT_MEM;
382
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55 }
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56
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57 if ((err = f9_init(&f9, cipher, key, keylen)) != CRYPT_OK) {
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
58 goto LBL_ERR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
59 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
60
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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61 in = fopen(fname, "rb");
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
62 if (in == NULL) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
63 err = CRYPT_FILE_NOTFOUND;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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64 goto LBL_ERR;
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65 }
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66
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diff changeset
67 do {
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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68 x = fread(buf, 1, LTC_FILE_READ_BUFSIZE, in);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
69 if ((err = f9_process(&f9, buf, (unsigned long)x)) != CRYPT_OK) {
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diff changeset
70 fclose(in);
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
diff changeset
71 goto LBL_CLEANBUF;
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diff changeset
72 }
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
diff changeset
73 } while (x == LTC_FILE_READ_BUFSIZE);
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diff changeset
74
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
75 if (fclose(in) != 0) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
76 err = CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
77 goto LBL_CLEANBUF;
382
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diff changeset
78 }
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parents:
diff changeset
79
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
80 err = f9_done(&f9, out, outlen);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
diff changeset
81
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
82 LBL_CLEANBUF:
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
83 zeromem(buf, LTC_FILE_READ_BUFSIZE);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
84 LBL_ERR:
382
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diff changeset
85 #ifdef LTC_CLEAN_STACK
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
86 zeromem(&f9, sizeof(f9_state));
382
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parents:
diff changeset
87 #endif
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
88 XFREE(buf);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
89 return err;
382
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parents:
diff changeset
90 #endif
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diff changeset
91 }
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parents:
diff changeset
92
0cbe8f6dbf9e propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 2af22fb4e878750b88f80f90d439b316d229796f)
Matt Johnston <matt@ucc.asn.au>
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diff changeset
93 #endif
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diff changeset
94
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
95 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
96 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
97 /* commit time: $Format:%ai$ */