mirror of
https://github.com/Llewellynvdm/Tomb.git
synced 2024-11-22 04:25:12 +00:00
KDF support for argon2 memory intensive algorithm
following many requests, here is support for argon2 KDF to be switched on using --kdftype argon2 (--kdf iterations --kdfmem memory) effective memory required is 2^memory KiB, defaults to 18 (262 MiB) number of iterations are still specified as --kdf argument requires the argon2 reference C implementation from P-H-C also requires tomb-kdb-pbkdf2-gensalt in extras/kdf-keys example usage: tomb forge -k argon.key --kdf 10 --kdftype argon2
This commit is contained in:
Jaromil
parent
5a5eb6ddcf
commit
5c932b00fd
82
tomb
82
tomb
@ -858,7 +858,7 @@ function _print() {
|
||||
_list_optional_tools() {
|
||||
typeset -a _deps
|
||||
_deps=(gettext dcfldd shred steghide)
|
||||
_deps+=(resize2fs tomb-kdb-pbkdf2 qrencode swish-e unoconv lsof)
|
||||
_deps+=(resize2fs tomb-kdb-pbkdf2 argon2 qrencode swish-e unoconv lsof)
|
||||
for d in $_deps; do
|
||||
_print "`which $d`"
|
||||
done
|
||||
@ -914,6 +914,8 @@ _ensure_dependencies() {
|
||||
command -v resize2fs 1>/dev/null 2>/dev/null || RESIZER=0
|
||||
# Check for KDF auxiliary tools
|
||||
command -v tomb-kdb-pbkdf2 1>/dev/null 2>/dev/null || KDF=0
|
||||
# Check for ARGON2 KDF auxiliary tools
|
||||
command -v argon2 1>/dev/null 2>/dev/null || ARGON2=0
|
||||
# Check for Swish-E file content indexer
|
||||
command -v swish-e 1>/dev/null 2>/dev/null || SWISH=0
|
||||
# Check for QREncode for paper backups of keys
|
||||
@ -1172,6 +1174,18 @@ get_lukskey() {
|
||||
_verbose "KDF len: $kdf_len"
|
||||
_password=$(tomb-kdb-pbkdf2 $kdf_salt $kdf_ic $kdf_len 2>/dev/null <<<$_password)
|
||||
;;
|
||||
|
||||
"argon2")
|
||||
kdf_salt="${firstline[(ws:_:)3]}"
|
||||
kdf_ic="${firstline[(ws:_:)4]}"
|
||||
kdf_mem="${firstline[(ws:_:)5]}"
|
||||
_message "Unlocking KDF key protection (::1 kdf::)" $kdf_hash
|
||||
_verbose "KDF salt: $kdf_salt"
|
||||
_verbose "KDF ic: $kdf_ic"
|
||||
_verbose "KDF mem: $kdf_mem"
|
||||
_password=$(argon2 $kdf_salt -m $kdf_mem -t $kdf_ic -l 64 -r 2>/dev/null <<<$_password)
|
||||
;;
|
||||
|
||||
*)
|
||||
_failure "No suitable program for KDF ::1 program::." $pbkdf_hash
|
||||
unset _password
|
||||
@ -1447,26 +1461,44 @@ gen_key() {
|
||||
# see: https://github.com/dyne/Tomb/issues/82
|
||||
itertime="`option_value --kdf`"
|
||||
# removing support of floating points because they can't be type checked well
|
||||
if [[ "$itertime" != <-> ]]; then
|
||||
unset tombpass
|
||||
unset tombpasstmp
|
||||
_warning "Wrong argument for --kdf: must be an integer number (iteration seconds)."
|
||||
_failure "Depending on the speed of machines using this tomb, use 1 to 10, or more"
|
||||
return 1
|
||||
fi
|
||||
# --kdf takes one parameter: iter time (on present machine) in seconds
|
||||
local -i microseconds
|
||||
microseconds=$(( itertime * 1000000 ))
|
||||
_success "Using KDF, iteration time: ::1 microseconds::" $microseconds
|
||||
_message "generating salt"
|
||||
pbkdf2_salt=`tomb-kdb-pbkdf2-gensalt`
|
||||
_message "calculating iterations"
|
||||
pbkdf2_iter=`tomb-kdb-pbkdf2-getiter $microseconds`
|
||||
_message "encoding the password"
|
||||
# We use a length of 64bytes = 512bits (more than needed!?)
|
||||
tombpass=`tomb-kdb-pbkdf2 $pbkdf2_salt $pbkdf2_iter 64 <<<"${tombpass}"`
|
||||
# if [[ "$itertime" != <-> ]]; then
|
||||
# unset tombpass
|
||||
# unset tombpasstmp
|
||||
# _warning "Wrong argument for --kdf: must be an integer number (iteration seconds)."
|
||||
# _failure "Depending on the speed of machines using this tomb, use 1 to 10, or more"
|
||||
# return 1
|
||||
# fi
|
||||
# # --kdf takes one parameter: iter time (on present machine) in seconds
|
||||
|
||||
header="_KDF_pbkdf2sha1_${pbkdf2_salt}_${pbkdf2_iter}_64\n"
|
||||
kdftype="`option_value --kdftype`"
|
||||
kdftype=${kdftype:-pbkdf2}
|
||||
case ${kdftype} in
|
||||
pbkdf2)
|
||||
local -i microseconds
|
||||
microseconds=$(( itertime * 1000000 ))
|
||||
_success "Using KDF, iteration time: ::1 microseconds::" $microseconds
|
||||
_message "generating salt"
|
||||
pbkdf2_salt=`tomb-kdb-pbkdf2-gensalt`
|
||||
_message "calculating iterations"
|
||||
pbkdf2_iter=`tomb-kdb-pbkdf2-getiter $microseconds`
|
||||
_message "encoding the password"
|
||||
# We use a length of 64bytes = 512bits (more than needed!?)
|
||||
tombpass=`tomb-kdb-pbkdf2 $pbkdf2_salt $pbkdf2_iter 64 <<<"${tombpass}"`
|
||||
|
||||
header="_KDF_pbkdf2sha1_${pbkdf2_salt}_${pbkdf2_iter}_64\n"
|
||||
;;
|
||||
argon2)
|
||||
_success "Using KDF Argon2"
|
||||
kdfmem="`option_value --kdfmem`"
|
||||
kdfmem=${kdfmem:-18}
|
||||
_message "memory used: 2^::1 kdfmemory::" $kdfmem
|
||||
kdfsalt=`tomb-kdb-pbkdf2-gensalt`
|
||||
_message "kdf salt: ::1 kdfsalt::" $kdfsalt
|
||||
_message "kdf iterations: ::1 kdfiterations::" $itertime
|
||||
tombpass=`argon2 $kdfsalt -m $kdfmem -t $itertime -l 64 -r <<<"${tombpass}"`
|
||||
header="_KDF_argon2_${kdfsalt}_${itertime}_${kdfmem}_64\n"
|
||||
;;
|
||||
esac
|
||||
}
|
||||
}
|
||||
print $header >> "$1"
|
||||
@ -3140,19 +3172,19 @@ main() {
|
||||
main_opts=(q -quiet=q D -debug=D h -help=h v -version=v f -force=f -tmp: U: G: T: -no-color -unsafe g -gpgkey=g -sudo:)
|
||||
subcommands_opts[__default]=""
|
||||
# -o in open and mount is used to pass alternate mount options
|
||||
subcommands_opts[open]="n -nohook=n k: -kdf: o: -ignore-swap -tomb-pwd: r: R: -sphx-host: -sphx-user: p -preserve-ownership=p"
|
||||
subcommands_opts[open]="n -nohook=n k: -kdf: -kdftype: -kdfmem: o: -ignore-swap -tomb-pwd: r: R: -sphx-host: -sphx-user: p -preserve-ownership=p"
|
||||
subcommands_opts[mount]=${subcommands_opts[open]}
|
||||
|
||||
subcommands_opts[create]="" # deprecated, will issue warning
|
||||
|
||||
# -o in forge and lock is used to pass an alternate cipher.
|
||||
subcommands_opts[forge]="-ignore-swap k: -kdf: o: -tomb-pwd: -use-random r: R: -sphx-host: -sphx-user: "
|
||||
subcommands_opts[forge]="-ignore-swap k: -kdf: -kdftype: -kdfmem: o: -tomb-pwd: -use-random r: R: -sphx-host: -sphx-user: "
|
||||
subcommands_opts[dig]="-ignore-swap s: -size=s "
|
||||
subcommands_opts[lock]="-ignore-swap k: -kdf: o: -tomb-pwd: r: R: -sphx-host: -sphx-user: -filesystem: "
|
||||
subcommands_opts[setkey]="k: -ignore-swap -kdf: -tomb-old-pwd: -tomb-pwd: r: R: -sphx-host: -sphx-user: "
|
||||
subcommands_opts[lock]="-ignore-swap k: -kdf: -kdftype: -kdfmem: o: -tomb-pwd: r: R: -sphx-host: -sphx-user: -filesystem: "
|
||||
subcommands_opts[setkey]="k: -ignore-swap -kdf: -kdftype: -kdfmem: -tomb-old-pwd: -tomb-pwd: r: R: -sphx-host: -sphx-user: "
|
||||
subcommands_opts[engrave]="k: "
|
||||
|
||||
subcommands_opts[passwd]="k: -ignore-swap -kdf: -tomb-old-pwd: -tomb-pwd: r: R: -sphx-host: -sphx-user: "
|
||||
subcommands_opts[passwd]="k: -ignore-swap -kdf: -kdftype: -kdfmem: -tomb-old-pwd: -tomb-pwd: r: R: -sphx-host: -sphx-user: "
|
||||
subcommands_opts[close]=""
|
||||
subcommands_opts[help]=""
|
||||
subcommands_opts[slam]=""
|
||||
|
||||
Loading…
Reference in New Issue
Block a user