Mercurial > dropbear
annotate libtomcrypt/src/headers/tomcrypt_dropbear.h @ 1672:3a97f14c0235
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
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(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
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(add/remove: 14/0 grow/shrink: 10/0 up/down: 6434/0) Total: 6434 bytes
author | Vladislav Grishenko <themiron@users.noreply.github.com> |
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date | Mon, 25 May 2020 20:50:25 +0500 |
parents | 8305ebe45940 |
children | e0871128e61f |
rev | line source |
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1 /* compile options depend on Dropbear options.h */ |
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2 #include "options.h" |
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3 |
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4 /* Dropbear config */ |
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5 |
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6 #define LTC_NOTHING |
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7 |
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8 /* Use small code where possible */ |
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9 #if DROPBEAR_SMALL_CODE |
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10 #define LTC_SMALL_CODE |
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11 #endif |
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12 |
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13 #if DROPBEAR_BLOWFISH |
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14 #define LTC_BLOWFISH |
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15 #endif |
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16 #if DROPBEAR_AES |
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17 #define LTC_RIJNDAEL |
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18 #endif |
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19 /* _TABLES tells it to use tables during setup, _SMALL means to use the smaller scheduled key format |
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20 * (saves 4KB of ram), _ALL_TABLES enables all tables during setup */ |
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21 #if DROPBEAR_TWOFISH |
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22 #define LTC_TWOFISH |
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23 #define LTC_TWOFISH_SMALL |
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24 #endif |
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25 |
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26 #if DROPBEAR_3DES |
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27 #define LTC_DES |
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28 #endif |
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29 |
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30 #if DROPBEAR_ENABLE_CTR_MODE |
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31 #define LTC_CBC_MODE |
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32 #endif |
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33 |
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34 #if DROPBEAR_ENABLE_CTR_MODE |
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35 #define LTC_CTR_MODE |
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36 #endif |
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37 |
1672
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38 #if DROPBEAR_ENABLE_GCM_MODE |
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39 #define LTC_GCM_MODE |
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40 #endif |
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41 |
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42 #if DROPBEAR_CHACHA20POLY1305 |
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43 #define LTC_CHACHA |
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44 #define LTC_POLY1305 |
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45 #endif |
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46 |
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47 #if DROPBEAR_SHA512 |
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48 #define LTC_SHA512 |
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49 #endif |
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50 |
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51 #if DROPBEAR_SHA384 |
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52 #define LTC_SHA384 |
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53 #endif |
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54 |
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55 #if DROPBEAR_SHA256 |
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56 #define LTC_SHA256 |
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57 #endif |
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58 |
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59 #define LTC_SHA1 |
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60 |
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61 #if DROPBEAR_MD5 |
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62 #define LTC_MD5 |
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63 #endif |
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64 |
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65 /* ECC */ |
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66 #if DROPBEAR_ECC |
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67 #define LTC_MECC |
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68 #define LTM_DESC |
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69 |
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70 /* use Shamir's trick for point mul (speeds up signature verification) */ |
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71 #define LTC_ECC_SHAMIR |
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72 |
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73 #if DROPBEAR_ECC_256 |
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74 #define LTC_ECC256 |
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75 #endif |
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76 #if DROPBEAR_ECC_384 |
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77 #define LTC_ECC384 |
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78 #endif |
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79 #if DROPBEAR_ECC_521 |
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80 #define LTC_ECC521 |
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81 #endif |
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82 |
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83 #endif /* DROPBEAR_ECC */ |
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84 |
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85 #define LTC_HMAC |
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86 #define LTC_HASH_HELPERS |
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87 |
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88 #define LTC_NO_TEST |
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89 |
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90 #define LTC_BASE64 |
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91 |
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92 /* end Dropbear config */ |