Mercurial > dropbear

annotate libtomcrypt/src/math/multi.c @ 1672:3a97f14c0235

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Add Chacha20-Poly1305, AES128-GCM and AES256-GCM support (#93) * Add Chacha20-Poly1305 authenticated encryption * Add general AEAD approach. * Add [email protected] algo using LibTomCrypt chacha and poly1305 routines. Chacha20-Poly1305 is generally faster than AES256 on CPU w/o dedicated AES instructions, having the same key size. Compiling in will add ~5,5kB to binary size on x86-64. function old new delta chacha_crypt - 1397 +1397 _poly1305_block - 608 +608 poly1305_done - 595 +595 dropbear_chachapoly_crypt - 457 +457 .rodata 26976 27392 +416 poly1305_process - 290 +290 poly1305_init - 221 +221 chacha_setup - 218 +218 encrypt_packet 1068 1270 +202 dropbear_chachapoly_getlength - 147 +147 decrypt_packet 756 897 +141 chacha_ivctr64 - 137 +137 read_packet 543 637 +94 dropbear_chachapoly_start - 94 +94 read_kex_algos 792 880 +88 chacha_keystream - 69 +69 dropbear_mode_chachapoly - 48 +48 sshciphers 280 320 +40 dropbear_mode_none 24 48 +24 dropbear_mode_ctr 24 48 +24 dropbear_mode_cbc 24 48 +24 dropbear_chachapoly_mac - 24 +24 dropbear_chachapoly - 24 +24 gen_new_keys 848 854 +6 ------------------------------------------------------------------------------ (add/remove: 14/0 grow/shrink: 10/0 up/down: 5388/0) Total: 5388 bytes * Add AES128-GCM and AES256-GCM authenticated encryption * Add general AES-GCM mode. * Add [email protected] and [email protected] algo using LibTomCrypt gcm routines. AES-GCM is combination of AES CTR mode and GHASH, slower than AES-CTR on CPU w/o dedicated AES/GHASH instructions therefore disabled by default. Compiling in will add ~6kB to binary size on x86-64. function old new delta gcm_process - 1060 +1060 .rodata 26976 27808 +832 gcm_gf_mult - 820 +820 gcm_add_aad - 660 +660 gcm_shift_table - 512 +512 gcm_done - 471 +471 gcm_add_iv - 384 +384 gcm_init - 347 +347 dropbear_gcm_crypt - 309 +309 encrypt_packet 1068 1270 +202 decrypt_packet 756 897 +141 gcm_reset - 118 +118 read_packet 543 637 +94 read_kex_algos 792 880 +88 sshciphers 280 360 +80 gcm_mult_h - 80 +80 dropbear_gcm_start - 62 +62 dropbear_mode_gcm - 48 +48 dropbear_mode_none 24 48 +24 dropbear_mode_ctr 24 48 +24 dropbear_mode_cbc 24 48 +24 dropbear_ghash - 24 +24 dropbear_gcm_getlength - 24 +24 gen_new_keys 848 854 +6 ------------------------------------------------------------------------------ (add/remove: 14/0 grow/shrink: 10/0 up/down: 6434/0) Total: 6434 bytes
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Mon, 25 May 2020 20:50:25 +0500
parents 6dba84798cd5
children e9dba7abd939
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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 #ifdef LTC_MPI
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12 #include <stdarg.h>
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13
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14 int ltc_init_multi(void **a, ...)
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15 {
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16 void **cur = a;
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17 int np = 0;
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18 va_list args;
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19
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20 va_start(args, a);
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21 while (cur != NULL) {
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22 if (mp_init(cur) != CRYPT_OK) {
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23 /* failed */
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24 va_list clean_list;
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25
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26 va_start(clean_list, a);
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27 cur = a;
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28 while (np--) {
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29 mp_clear(*cur);
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30 cur = va_arg(clean_list, void**);
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31 }
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32 va_end(clean_list);
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33 va_end(args);
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34 return CRYPT_MEM;
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35 }
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36 ++np;
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37 cur = va_arg(args, void**);
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38 }
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39 va_end(args);
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40 return CRYPT_OK;
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41 }
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42
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43 void ltc_deinit_multi(void *a, ...)
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44 {
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45 void *cur = a;
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46 va_list args;
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47
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48 va_start(args, a);
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49 while (cur != NULL) {
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50 mp_clear(cur);
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51 cur = va_arg(args, void *);
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52 }
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53 va_end(args);
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54 }
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55
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56 void ltc_cleanup_multi(void **a, ...)
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57 {
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58 void **cur = a;
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59 va_list args;
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60
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61 va_start(args, a);
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62 while (cur != NULL) {
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63 if (*cur != NULL) {
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64 mp_clear(*cur);
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65 *cur = NULL;
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66 }
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67 cur = va_arg(args, void**);
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68 }
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69 va_end(args);
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70 return;
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71 }
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72
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73 #endif
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74
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75 /* ref: $Format:%D$ */
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76 /* git commit: $Format:%H$ */
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77 /* commit time: $Format:%ai$ */