mirror of
https://github.com/clearml/dropbear
synced 2025-03-12 14:48:34 +00:00
d3d0d60076
* Add Chacha20-Poly1305 authenticated encryption * Add general AEAD approach. * Add chacha20-poly1305@openssh.com 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 aes128-gcm@openssh.com and aes256-gcm@openssh.com 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
93 lines
1.4 KiB
C
93 lines
1.4 KiB
C
/* compile options depend on Dropbear options.h */
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#include "options.h"
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/* Dropbear config */
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#define LTC_NOTHING
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/* Use small code where possible */
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#if DROPBEAR_SMALL_CODE
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#define LTC_SMALL_CODE
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#endif
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#if DROPBEAR_BLOWFISH
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#define LTC_BLOWFISH
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#endif
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#if DROPBEAR_AES
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#define LTC_RIJNDAEL
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#endif
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/* _TABLES tells it to use tables during setup, _SMALL means to use the smaller scheduled key format
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* (saves 4KB of ram), _ALL_TABLES enables all tables during setup */
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#if DROPBEAR_TWOFISH
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#define LTC_TWOFISH
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#define LTC_TWOFISH_SMALL
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#endif
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#if DROPBEAR_3DES
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#define LTC_DES
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#endif
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#if DROPBEAR_ENABLE_CTR_MODE
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#define LTC_CBC_MODE
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#endif
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#if DROPBEAR_ENABLE_CTR_MODE
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#define LTC_CTR_MODE
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#endif
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#if DROPBEAR_ENABLE_GCM_MODE
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#define LTC_GCM_MODE
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#endif
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#if DROPBEAR_CHACHA20POLY1305
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#define LTC_CHACHA
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#define LTC_POLY1305
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#endif
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#if DROPBEAR_SHA512
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#define LTC_SHA512
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#endif
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#if DROPBEAR_SHA384
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#define LTC_SHA384
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#endif
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#if DROPBEAR_SHA256
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#define LTC_SHA256
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#endif
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#define LTC_SHA1
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#if DROPBEAR_MD5
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#define LTC_MD5
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#endif
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/* ECC */
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#if DROPBEAR_ECC
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#define LTC_MECC
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#define LTM_DESC
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/* use Shamir's trick for point mul (speeds up signature verification) */
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#define LTC_ECC_SHAMIR
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#if DROPBEAR_ECC_256
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#define LTC_ECC256
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#endif
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#if DROPBEAR_ECC_384
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#define LTC_ECC384
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#endif
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#if DROPBEAR_ECC_521
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#define LTC_ECC521
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#endif
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#endif /* DROPBEAR_ECC */
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#define LTC_HMAC
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#define LTC_HASH_HELPERS
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#define LTC_NO_TEST
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#define LTC_BASE64
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/* end Dropbear config */
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