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

language: c

git:
  depth: 3

matrix:
  include:
    # subsequent matrix options use these first settings
    - os: linux
      compiler: gcc
      env: WEXTRAFLAGS=-Werror
      sudo: false
    - env: MULTI=1 WEXTRAFLAGS=-Werror
    # libtom has some warnings, so no WEXTRAFLAGS
    - env: CONFIGURE_FLAGS=--enable-bundled-libtom WEXTRAFLAGS=""
    - env: NOWRITEV=1 WEXTRAFLAGS=-Werror
    # libtomcrypt 1.18.1 fixes clang problems, distro doesn't have that yet
    - os: linux
      compiler: clang
      env: CONFIGURE_FLAGS=--enable-bundled-libtom WEXTRAFLAGS=""
    - os: osx
      compiler: clang
      env: WEXTRAFLAGS=""

    # Note: the fuzzing malloc wrapper doesn't replace free() in system libtomcrypt, so need bundled.
    - env: DO_FUZZ=1 CONFIGURE_FLAGS="--enable-fuzz --disable-harden --enable-bundled-libtom" WEXTRAFLAGS="" LDFLAGS=-fsanitize=address EXTRACFLAGS=-fsanitize=address CXX=clang++
      compiler: clang
      # sanitizers need ptrace which is privileged https://github.com/travis-ci/travis-ci/issues/9033
      sudo: required

# container-based builds
addons:
  apt:
    packages:
    # packages list: https://github.com/travis-ci/apt-package-whitelist/blob/master/ubuntu-precise
    - zlib1g-dev
    - libtomcrypt-dev
    - libtommath-dev
    - mercurial

before_install:
  - if [ "$CC" = "clang" ]; then WEXTRAFLAGS="$WEXTRAFLAGS -Wno-error=incompatible-library-redeclaration" ; fi  # workaround

install:
  - autoconf 
  - autoheader 
  - ./configure $CONFIGURE_FLAGS CFLAGS="-O2 -Wall -Wno-pointer-sign $WEXTRAFLAGS $EXTRACFLAGS" --prefix="$HOME/inst" || (cat config.log; exit 1)
  - if [ "$NOWRITEV" = "1" ]; then sed -i -e s/HAVE_WRITEV/DONT_HAVE_WRITEV/ config.h ; fi
  - make -j3 
  - test -z $DO_FUZZ || make fuzzstandalone
  # avoid concurrent install, osx/freebsd is racey (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208093)
  - make install 

script:
  - ~/inst/bin/dropbearkey -t rsa -f testrsa
  - ~/inst/bin/dropbearkey -t dss -f testdss
  - ~/inst/bin/dropbearkey -t ecdsa -f testec256 -s 256
  - ~/inst/bin/dropbearkey -t ecdsa -f testec384 -s 384
  - ~/inst/bin/dropbearkey -t ecdsa -f testec521 -s 521
  - ~/inst/bin/dropbearkey -t ed25519 -f tested25519
  - test -z $DO_FUZZ || ./fuzzers_test.sh

branches:
  only:
    - master
    - coverity