Mercurial > dropbear
annotate ltc_prng.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 | d68d61e7056a |
children |
rev | line source |
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1036
deed0571cacc
DROPBEAR_ prefix for include guards to avoid collisions
Thorsten Horstmann <thorsten.horstmann@web.de>
parents:
857
diff
changeset
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1 #ifndef DROPBEAR_LTC_PRNG_H_DROPBEAR |
deed0571cacc
DROPBEAR_ prefix for include guards to avoid collisions
Thorsten Horstmann <thorsten.horstmann@web.de>
parents:
857
diff
changeset
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2 #define DROPBEAR_LTC_PRNG_H_DROPBEAR |
759
76fba0856749
More changes for KEX and ECDH. Set up hash descriptors, make ECC code work,
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
3 |
76fba0856749
More changes for KEX and ECDH. Set up hash descriptors, make ECC code work,
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
4 #include "includes.h" |
76fba0856749
More changes for KEX and ECDH. Set up hash descriptors, make ECC code work,
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
5 |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1036
diff
changeset
|
6 #if DROPBEAR_LTC_PRNG |
759
76fba0856749
More changes for KEX and ECDH. Set up hash descriptors, make ECC code work,
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
7 |
76fba0856749
More changes for KEX and ECDH. Set up hash descriptors, make ECC code work,
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
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8 extern const struct ltc_prng_descriptor dropbear_prng_desc; |
76fba0856749
More changes for KEX and ECDH. Set up hash descriptors, make ECC code work,
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
9 |
857 | 10 #endif /* DROPBEAR_LTC_PRNG */ |
759
76fba0856749
More changes for KEX and ECDH. Set up hash descriptors, make ECC code work,
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
11 |
1036
deed0571cacc
DROPBEAR_ prefix for include guards to avoid collisions
Thorsten Horstmann <thorsten.horstmann@web.de>
parents:
857
diff
changeset
|
12 #endif /* DROPBEAR_LTC_PRNG_H_DROPBEAR */ |