Mercurial > dropbear

annotate libtomcrypt/src/mac/f9/f9_init.c @ 1857:6022df862942

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Use DSCP for IP QoS traffic classes The previous TOS values are deprecated and not used by modern traffic classifiers. This sets AF21 for "interactive" traffic (with a tty). Non-tty traffic sets AF11 - that indicates high throughput but is not lowest priority (which would be CS1 or LE). This differs from the CS1 used by OpenSSH, it lets interactive git over SSH have higher priority than background least effort traffic. Dropbear's settings here should be suitable with the diffservs used by CAKE qdisc.
author Matt Johnston <matt@ucc.asn.au>
date Tue, 25 Jan 2022 17:32:20 +0800
parents 6dba84798cd5
children
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rev   line source
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 }
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
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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 }
1471
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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parents: 1435
diff changeset
65 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
diff changeset
66 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
diff changeset
67 /* commit time: $Format:%ai$ */
382
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68