Mercurial > dropbear

annotate libtomcrypt/src/mac/f9/f9_init.c @ 1855:35d504d59c05

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Implement server-side support for sk-ecdsa U2F-backed keys (#142) * Implement server-side support for sk-ecdsa U2F-backed keys * Fix out-of-bounds read on normal ecdsa-sha2-[identifier] keys * Fix one more potential out-of-bounds read * Check if nistp256 curve is used in sk-ecdsa-sha2- key It's the only allowed curve per PROTOCOL.u2f specification * Implement server-side support for sk-ed25519 FIDO2-backed keys * Keys with type sk-* make no sense as host keys, so they should be disabled * fix typo * Make sk-ecdsa call buf_ecdsa_verify This reduces code duplication, the SK code just handles the different message format. * Reduce sk specific code The application id can be stored in signkey, then we don't need to call sk-specific functions from svr-authpubkey * Remove debugging output, which causes compilation errors with DEBUG_TRACE disabled * Proper cleanup of sk_app Co-authored-by: Matt Johnston <[email protected]>
author egor-duda <egor-duda@users.noreply.github.com>
date Sat, 22 Jan 2022 16:53:04 +0300
parents 6dba84798cd5
children
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382
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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 f9_init.c
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13 F9 Support, start an F9 state
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14 */
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15
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16 #ifdef LTC_F9_MODE
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17
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18 /** Initialize F9-MAC state
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19 @param f9 [out] f9 state to initialize
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20 @param cipher Index of cipher to use
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21 @param key [in] Secret key
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22 @param keylen Length of secret key in octets
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23 Return CRYPT_OK on success
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24 */
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25 int f9_init(f9_state *f9, int cipher, const unsigned char *key, unsigned long keylen)
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26 {
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27 int x, err;
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28
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29 LTC_ARGCHK(f9 != NULL);
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30 LTC_ARGCHK(key != NULL);
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31
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32 /* schedule the key */
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33 if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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34 return err;
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35 }
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36
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37 #ifdef LTC_FAST
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38 if (cipher_descriptor[cipher].block_length % sizeof(LTC_FAST_TYPE)) {
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39 return CRYPT_INVALID_ARG;
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40 }
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41 #endif
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42
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43 if ((err = cipher_descriptor[cipher].setup(key, keylen, 0, &f9->key)) != CRYPT_OK) {
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44 goto done;
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45 }
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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46
382
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47 /* make the second key */
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48 for (x = 0; (unsigned)x < keylen; x++) {
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49 f9->akey[x] = key[x] ^ 0xAA;
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50 }
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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51
382
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52 /* setup struct */
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53 zeromem(f9->IV, cipher_descriptor[cipher].block_length);
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54 zeromem(f9->ACC, cipher_descriptor[cipher].block_length);
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55 f9->blocksize = cipher_descriptor[cipher].block_length;
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56 f9->cipher = cipher;
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57 f9->buflen = 0;
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58 f9->keylen = keylen;
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59 done:
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60 return err;
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61 }
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62
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63 #endif
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64
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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65 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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66 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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67 /* commit time: $Format:%ai$ */
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68