The Ed25519 key pairs are much shorter than RSA pairs and are supported
by default in OpenSSH. Looking at websites explaining how to create new
SSH keys, many suggest using Ed25519 rather than RSA, however consider
the former as not yet widely established. OpenWrt likely has a positive
influence on that development.
As enabling Ed25519 is a compile time option, it is currently not
possible to install the feature via `opkg` nor select that option in an
ImageBuilder.
Due to the size impact of **12kB** the option should only be enabled for
devices with `!SMALL_FLASH`.
This approach seems cleaner than splitting `dropbear` into two packages
like `dropbear` and `dropbear-ed25519`.
Signed-off-by: Paul Spooren <mail@aparcar.org>
If not needed, disabling scp allows for a nice size reduction.
Dropbear executable size comparison:
153621 bytes (baseline)
133077 bytes (without scp)
In other words, we trim a total of 20544 bytes.
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
The ssh symlink was still being created even when dbclient was disabled in the
build configuration. Fix this annoyance.
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
Upstream in commit 972d723484d8 ("split signkey_type and signature_type
for RSA sha1 vs sha256") has added strict checking of pubkey algorithms
which made keys with SHA-256 hashing algorithm unusable as they still
reuse the `ssh-rsa` public key format. So fix this by disabling the
check for `rsa-sha2-256` pubkeys.
Ref: https://tools.ietf.org/html/rfc8332#section-3
Fixes: d4c80f5b17 ("dropbear: bump to 2020.80")
Tested-by: Russell Senior <russell@personaltelco.net>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
This replaces deprecated backticks by more versatile $(...) syntax.
Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
[add commit description]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Backport patches which fix compile issue for uClibc-ng :
dbrandom.c:174:8: warning: implicit declaration of function 'getrandom'; did you mean 'genrandom'? [-Wimplicit-function-declaration]
ret = getrandom(buf, sizeof(buf), GRND_NONBLOCK);
^~~~~~~~~
genrandom
dbrandom.c:174:36: error: 'GRND_NONBLOCK' undeclared (first use in this function); did you mean 'SOCK_NONBLOCK'?
ret = getrandom(buf, sizeof(buf), GRND_NONBLOCK);
^~~~~~~~~~~~~
SOCK_NONBLOCK
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
- drop patches (applied upstream):
* 010-backport-change-address-logging.patch
* 020-backport-ed25519-support.patch
* 021-backport-chacha20-poly1305-support.patch
- backport patches:
* 010-backport-disable-toom-and-karatsuba.patch:
reduce dropbear binary size (about ~8Kb).
- refresh patches.
- don't bother anymore with following config options
because they are disabled in upstream too:
* DROPBEAR_3DES
* DROPBEAR_ENABLE_CBC_MODE
* DROPBEAR_SHA1_96_HMAC
- explicitly disable DO_MOTD as it was before commit a1099ed:
upstream has (accidentally) switched it to 0 in release 2019.77,
but reverted back in release 2020.79.
Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
201e359 Handle early exit when addrstring isn't set
fa4c464 Improve address logging on early exit messages (#83)
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
