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

#!/bin/bash

if [ $# -lt 3 ]
then
  echo "usage is: ${0##*/} <which makefile and other make options> <additional defines> <path to math provider>"
  echo "e.g. \"${0##*/} \"makefile -j9\" \"-DUSE_LTM -DLTM_DESC -I../libtommath\" ../libtommath/libtommath.a\""
  echo "to create aggregate coverage: pre-pend with LTC_COVERAGE=1"
  exit -1
fi

# date
echo "date="`date`

# check sources
bash check_source.sh "CHECK_SOURCES" " " "$1" "$2" "$3" || exit 1

mk="$1"

[ "$LTC_COVERAGE" != "" ] && mk="$mk COVERAGE=1"

# stock build
bash run.sh "STOCK" " " "$mk" "$2" "$3" || exit 1

# EASY build
bash run.sh "EASY" "-DLTC_EASY" "$mk" "$2" "$3" || exit 1

# SMALL code
bash run.sh "SMALL" "-DLTC_SMALL_CODE" "$mk" "$2" "$3" || exit 1

# NOTABLES
bash run.sh "NOTABLES" "-DLTC_NO_TABLES" "$mk" "$2" "$3" || exit 1

# SMALL+NOTABLES
bash run.sh "SMALL+NOTABLES" "-DLTC_SMALL_CODE -DLTC_NO_TABLES" "$mk" "$2" "$3" || exit 1

# CLEANSTACK
bash run.sh "CLEANSTACK" "-DLTC_CLEAN_STACK" "$mk" "$2" "$3" || exit 1

# CLEANSTACK + SMALL
bash run.sh "CLEANSTACK+SMALL" "-DLTC_SMALL_CODE -DLTC_CLEAN_STACK" "$mk" "$2" "$3" || exit 1

# CLEANSTACK + NOTABLES
bash run.sh "CLEANSTACK+NOTABLES" "-DLTC_NO_TABLES -DLTC_CLEAN_STACK" "$mk" "$2" "$3" || exit 1

# CLEANSTACK + NOTABLES + SMALL
bash run.sh "CLEANSTACK+NOTABLES+SMALL" "-DLTC_NO_TABLES -DLTC_CLEAN_STACK -DLTC_SMALL_CODE" "$mk" "$2" "$3" || exit 1

# NO_FAST
bash run.sh "NO_FAST" "-DLTC_NO_FAST" "$mk" "$2" "$3" || exit 1

# NO_FAST + NOTABLES
bash run.sh "NO_FAST+NOTABLES" "-DLTC_NO_FAST -DLTC_NO_TABLES" "$mk" "$2" "$3" || exit 1

# NO_ASM
bash run.sh "NO_ASM" "-DLTC_NO_ASM" "$mk" "$2" "$3" || exit 1

# NO_TIMING_RESISTANCE
bash run.sh "NO_TIMING_RESISTANCE" "-DLTC_NO_ECC_TIMING_RESISTANT -DLTC_NO_RSA_BLINDING" "$mk" "$2" "$3" || exit 1

# CLEANSTACK+NOTABLES+SMALL+NO_ASM+NO_TIMING_RESISTANCE
bash run.sh "CLEANSTACK+NOTABLES+SMALL+NO_ASM+NO_TIMING_RESISTANCE" "-DLTC_CLEAN_STACK -DLTC_NO_TABLES -DLTC_SMALL_CODE -DLTC_NO_ECC_TIMING_RESISTANT -DLTC_NO_RSA_BLINDING" "$mk" "$2" "$3" || exit 1

# test build with no testing
bash testbuild.sh "NOTEST" "-DLTC_NO_TEST" "$mk" "$2" "$3" || exit 1

# test build with no file routines
bash testbuild.sh "NOFILE" "-DLTC_NO_FILE" "$mk" "$2" "$3" || exit 1

# ref:         $Format:%D$
# git commit:  $Format:%H$
# commit time: $Format:%ai$