Mercurial > dropbear

annotate libtomcrypt/src/modes/lrw/lrw_decrypt.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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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 lrw_decrypt.c
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13 LRW_MODE implementation, Decrypt blocks, Tom St Denis
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14 */
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15
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16 #ifdef LTC_LRW_MODE
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17
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18 /**
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19 LRW decrypt blocks
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20 @param ct The ciphertext
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21 @param pt [out] The plaintext
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22 @param len The length in octets, must be a multiple of 16
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23 @param lrw The LRW state
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24 */
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25 int lrw_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, symmetric_LRW *lrw)
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26 {
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27 int err;
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28
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29 LTC_ARGCHK(pt != NULL);
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30 LTC_ARGCHK(ct != NULL);
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31 LTC_ARGCHK(lrw != NULL);
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32
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33 if ((err = cipher_is_valid(lrw->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 if (cipher_descriptor[lrw->cipher].accel_lrw_decrypt != NULL) {
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38 return cipher_descriptor[lrw->cipher].accel_lrw_decrypt(ct, pt, len, lrw->IV, lrw->tweak, &lrw->key);
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39 }
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40
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41 return lrw_process(ct, pt, len, LRW_DECRYPT, lrw);
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42 }
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45 #endif
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46
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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47 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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48 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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49 /* commit time: $Format:%ai$ */