Mercurial > dropbear

annotate libtomcrypt/src/hashes/helper/hash_memory_multi.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
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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 #include <stdarg.h>
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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11
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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12 #ifdef LTC_HASH_HELPERS
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13 /**
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14 @file hash_memory_multi.c
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15 Hash (multiple buffers) memory helper, Tom St Denis
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16 */
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17
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18 /**
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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19 Hash multiple (non-adjacent) blocks of memory at once.
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20 @param hash The index of the hash you wish to use
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21 @param out [out] Where to store the digest
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22 @param outlen [in/out] Max size and resulting size of the digest
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23 @param in The data you wish to hash
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24 @param inlen The length of the data to hash (octets)
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25 @param ... tuples of (data,len) pairs to hash, terminated with a (NULL,x) (x=don't care)
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26 @return CRYPT_OK if successful
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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27 */
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28 int hash_memory_multi(int hash, unsigned char *out, unsigned long *outlen,
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29 const unsigned char *in, unsigned long inlen, ...)
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30 {
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31 hash_state *md;
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32 int err;
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33 va_list args;
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34 const unsigned char *curptr;
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35 unsigned long curlen;
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36
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37 LTC_ARGCHK(in != NULL);
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38 LTC_ARGCHK(out != NULL);
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39 LTC_ARGCHK(outlen != NULL);
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40
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41 if ((err = hash_is_valid(hash)) != CRYPT_OK) {
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42 return err;
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43 }
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44
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45 if (*outlen < hash_descriptor[hash].hashsize) {
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46 *outlen = hash_descriptor[hash].hashsize;
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47 return CRYPT_BUFFER_OVERFLOW;
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48 }
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49
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50 md = XMALLOC(sizeof(hash_state));
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51 if (md == NULL) {
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52 return CRYPT_MEM;
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53 }
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54
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55 if ((err = hash_descriptor[hash].init(md)) != CRYPT_OK) {
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56 goto LBL_ERR;
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57 }
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58
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59 va_start(args, inlen);
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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60 curptr = in;
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61 curlen = inlen;
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62 for (;;) {
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63 /* process buf */
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64 if ((err = hash_descriptor[hash].process(md, curptr, curlen)) != CRYPT_OK) {
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65 goto LBL_ERR;
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66 }
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67 /* step to next */
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68 curptr = va_arg(args, const unsigned char*);
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69 if (curptr == NULL) {
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70 break;
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71 }
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72 curlen = va_arg(args, unsigned long);
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73 }
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74 err = hash_descriptor[hash].done(md, out);
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75 *outlen = hash_descriptor[hash].hashsize;
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76 LBL_ERR:
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77 #ifdef LTC_CLEAN_STACK
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78 zeromem(md, sizeof(hash_state));
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79 #endif
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80 XFREE(md);
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81 va_end(args);
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82 return err;
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83 }
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
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84 #endif /* #ifdef LTC_HASH_HELPERS */
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85
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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86 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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87 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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88 /* commit time: $Format:%ai$ */