Mercurial > dropbear

annotate libtomcrypt/src/mac/xcbc/xcbc_file.c @ 1659:d32bcb5c557d

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Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents 6dba84798cd5
children e9dba7abd939
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
382
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diff changeset
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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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
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11 /**
382
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12 @file xcbc_file.c
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13 XCBC support, process a file, Tom St Denis
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14 */
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15
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16 #ifdef LTC_XCBC
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17
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18 /**
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19 XCBC 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)
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23 @param filename The name of the file you wish to XCBC
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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 */
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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28 int xcbc_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 *filename,
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31 unsigned char *out, unsigned long *outlen)
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32 {
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33 #ifdef LTC_NO_FILE
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34 return CRYPT_NOP;
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35 #else
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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36 size_t x;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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37 int err;
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38 xcbc_state xcbc;
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39 FILE *in;
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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40 unsigned char *buf;
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41
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42 LTC_ARGCHK(key != NULL);
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43 LTC_ARGCHK(filename != NULL);
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44 LTC_ARGCHK(out != NULL);
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45 LTC_ARGCHK(outlen != NULL);
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46
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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47 if ((buf = XMALLOC(LTC_FILE_READ_BUFSIZE)) == NULL) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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48 return CRYPT_MEM;
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49 }
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50
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51 if ((err = xcbc_init(&xcbc, cipher, key, keylen)) != CRYPT_OK) {
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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52 goto LBL_ERR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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53 }
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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54
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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55 in = fopen(filename, "rb");
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56 if (in == NULL) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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57 err = CRYPT_FILE_NOTFOUND;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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58 goto LBL_ERR;
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59 }
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60
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61 do {
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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62 x = fread(buf, 1, LTC_FILE_READ_BUFSIZE, in);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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63 if ((err = xcbc_process(&xcbc, buf, (unsigned long)x)) != CRYPT_OK) {
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64 fclose(in);
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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65 goto LBL_CLEANBUF;
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66 }
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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67 } while (x == LTC_FILE_READ_BUFSIZE);
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68
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
69 if (fclose(in) != 0) {
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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70 err = CRYPT_ERROR;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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71 goto LBL_CLEANBUF;
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72 }
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73
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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74 err = xcbc_done(&xcbc, out, outlen);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
75
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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76 LBL_CLEANBUF:
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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77 zeromem(buf, LTC_FILE_READ_BUFSIZE);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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78 LBL_ERR:
382
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79 #ifdef LTC_CLEAN_STACK
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
80 zeromem(&xcbc, sizeof(xcbc_state));
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81 #endif
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
82 XFREE(buf);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
83 return err;
382
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diff changeset
84 #endif
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85 }
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86
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87 #endif
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88
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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89 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
90 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
91 /* commit time: $Format:%ai$ */