[authfile.c key.c key.h ssh-keygen.c]
fix a possible NULL deref on loading a corrupt ECDH key
store ECDH group information in private keys files as "named groups"
rather than as a set of explicit group parameters (by setting
the OPENSSL_EC_NAMED_CURVE flag). This makes for shorter key files and
retrieves the group's OpenSSL NID that we need for various things.
[kexecdhc.c kexecdhs.c key.c key.h myproposal.h packet.c readconf.c]
[ssh-agent.c ssh-ecdsa.c ssh-keygen.c ssh.c] Disable ECDH and ECDSA on
platforms that don't have the requisite OpenSSL support. ok dtucker@
[ssh-keygen.c]
Switch ECDSA default key size to 256 bits, which according to RFC5656
should still be better than our current RSA-2048 default.
ok djm@, markus@
[ssh-add.c ssh-agent.c ssh-keygen.c ssh-keysign.c ssh.c sshd.c]
reintroduce commit from tedu@, which I pulled out for release
engineering:
OpenSSL_add_all_algorithms is the name of the function we have a
man page for, so use that. ok djm
[PROTOCOL PROTOCOL.agent PROTOCOL.certkeys auth2-jpake.c authfd.c]
[authfile.c buffer.h dns.c kex.c kex.h key.c key.h monitor.c]
[monitor_wrap.c myproposal.h packet.c packet.h pathnames.h readconf.c]
[ssh-add.1 ssh-add.c ssh-agent.1 ssh-agent.c ssh-keygen.1 ssh-keygen.c]
[ssh-keyscan.1 ssh-keyscan.c ssh-keysign.8 ssh.1 ssh.c ssh2.h]
[ssh_config.5 sshconnect.c sshconnect2.c sshd.8 sshd.c sshd_config.5]
[uuencode.c uuencode.h bufec.c kexecdh.c kexecdhc.c kexecdhs.c ssh-ecdsa.c]
Implement Elliptic Curve Cryptography modes for key exchange (ECDH) and
host/user keys (ECDSA) as specified by RFC5656. ECDH and ECDSA offer
better performance than plain DH and DSA at the same equivalent symmetric
key length, as well as much shorter keys.
Only the mandatory sections of RFC5656 are implemented, specifically the
three REQUIRED curves nistp256, nistp384 and nistp521 and only ECDH and
ECDSA. Point compression (optional in RFC5656 is NOT implemented).
Certificate host and user keys using the new ECDSA key types are supported.
Note that this code has not been tested for interoperability and may be
subject to change.
feedback and ok markus@
[ssh-add.c ssh-agent.c ssh-keygen.c ssh-keysign.c ssh.c sshd.c]
OpenSSL_add_all_algorithms is the name of the function we have a man page
for, so use that. ok djm
[PROTOCOL.certkeys ssh-keygen.c]
tighten the rules for certificate encoding by requiring that options
appear in lexical order and make our ssh-keygen comply. ok markus@
[PROTOCOL.certkeys auth-options.c ssh-keygen.c]
Move the permit-* options to the non-critical "extensions" field for v01
certificates. The logic is that if another implementation fails to
implement them then the connection just loses features rather than fails
outright.
ok markus@
- djm@cvs.openbsd.org 2010/04/23 01:47:41
[ssh-keygen.c]
bz#1740: display a more helpful error message when $HOME is
inaccessible while trying to create .ssh directory. Based on patch
from jchadima AT redhat.com; ok dtucker@
[PROTOCOL.certkeys auth-options.c auth-options.h auth-rsa.c]
[auth2-pubkey.c authfd.c key.c key.h myproposal.h ssh-add.c]
[ssh-agent.c ssh-dss.c ssh-keygen.1 ssh-keygen.c ssh-rsa.c]
[sshconnect.c sshconnect2.c sshd.c]
revised certificate format ssh-{dss,rsa}-cert-v01@openssh.com with the
following changes:
move the nonce field to the beginning of the certificate where it can
better protect against chosen-prefix attacks on the signature hash
Rename "constraints" field to "critical options"
Add a new non-critical "extensions" field
Add a serial number
The older format is still support for authentication and cert generation
(use "ssh-keygen -t v00 -s ca_key ..." to generate a v00 certificate)
ok markus@
[auth-rh-rsa.c auth-rsa.c auth.c auth.h auth2-hostbased.c auth2-pubkey.c]
[authfile.c authfile.h hostfile.c hostfile.h servconf.c servconf.h]
[ssh-keygen.c ssh.1 sshconnect.c sshd_config.5]
Add a TrustedUserCAKeys option to sshd_config to specify CA keys that
are trusted to authenticate users (in addition than doing it per-user
in authorized_keys).
Add a RevokedKeys option to sshd_config and a @revoked marker to
known_hosts to allow keys to me revoked and banned for user or host
authentication.
feedback and ok markus@
- djm@cvs.openbsd.org 2010/02/26 20:29:54
[PROTOCOL PROTOCOL.agent PROTOCOL.certkeys addrmatch.c auth-options.c]
[auth-options.h auth.h auth2-pubkey.c authfd.c dns.c dns.h hostfile.c]
[hostfile.h kex.h kexdhs.c kexgexs.c key.c key.h match.h monitor.c]
[myproposal.h servconf.c servconf.h ssh-add.c ssh-agent.c ssh-dss.c]
[ssh-keygen.1 ssh-keygen.c ssh-rsa.c ssh.1 ssh.c ssh2.h sshconnect.c]
[sshconnect2.c sshd.8 sshd.c sshd_config.5]
Add support for certificate key types for users and hosts.
OpenSSH certificate key types are not X.509 certificates, but a much
simpler format that encodes a public key, identity information and
some validity constraints and signs it with a CA key. CA keys are
regular SSH keys. This certificate style avoids the attack surface
of X.509 certificates and is very easy to deploy.
Certified host keys allow automatic acceptance of new host keys
when a CA certificate is marked as sh/known_hosts.
see VERIFYING HOST KEYS in ssh(1) for details.
Certified user keys allow authentication of users when the signing
CA key is marked as trusted in authorized_keys. See "AUTHORIZED_KEYS
FILE FORMAT" in sshd(8) for details.
Certificates are minted using ssh-keygen(1), documentation is in
the "CERTIFICATES" section of that manpage.
Documentation on the format of certificates is in the file
PROTOCOL.certkeys
feedback and ok markus@
[pathnames.h readconf.c readconf.h scp.1 sftp.1 ssh-add.1 ssh-add.c]
[ssh-agent.c ssh-keygen.1 ssh-keygen.c ssh.1 ssh.c ssh_config.5]
replace our obsolete smartcard code with PKCS#11.
ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-11/v2-20/pkcs-11v2-20.pdf
ssh(1) and ssh-keygen(1) use dlopen(3) directly to talk to a PKCS#11
provider (shared library) while ssh-agent(1) delegates PKCS#11 to
a forked a ssh-pkcs11-helper process.
PKCS#11 is currently a compile time option.
feedback and ok djm@; inspired by patches from Alon Bar-Lev
`
[ssh-keygen.c]
force use of correct hash function for random-art signature display
as it was inheriting the wrong one when bubblebabble signatures were
activated; bz#1611 report and patch from fwojcik+openssh AT besh.com;
ok markus@
[monitor_wrap.c monitor_mm.c ssh-keygen.c auth2.c gss-genr.c sftp-client.c]
alphabetize includes; reduces diff vs portable and style(9).
ok stevesk djm
(Id sync only; these were already in order in -portable)
[ssh-keygen.c]
Change "ssh-keygen -F [host] -l" to not display random art unless
-v is also specified, making it consistent with the manual and other
uses of -l.
ok grunk@
[ssh-keygen.c ssh-keygen.1]
ssh-keygen would write fingerprints to STDOUT, and random art to STDERR,
that is not how it was envisioned.
Also correct manpage saying that -v is needed along with -l for it to work.
spotted by naddy@
[ssh_config.5 key.h readconf.c readconf.h ssh-keygen.1 ssh-keygen.c key.c
sshconnect.c]
Introduce SSH Fingerprint ASCII Visualization, a technique inspired by the
graphical hash visualization schemes known as "random art", and by
Dan Kaminsky's musings on the subject during a BlackOp talk at the
23C3 in Berlin.
Scientific publication (original paper):
"Hash Visualization: a New Technique to improve Real-World Security",
Perrig A. and Song D., 1999, International Workshop on Cryptographic
Techniques and E-Commerce (CrypTEC '99)
http://sparrow.ece.cmu.edu/~adrian/projects/validation/validation.pdf
The algorithm used here is a worm crawling over a discrete plane,
leaving a trace (augmenting the field) everywhere it goes.
Movement is taken from dgst_raw 2bit-wise. Bumping into walls
makes the respective movement vector be ignored for this turn,
thus switching to the other color of the chessboard.
Graphs are not unambiguous for now, because circles in graphs can be
walked in either direction.
discussions with several people,
help, corrections and ok markus@ djm@
[ssh-keygen.c]
support -l (print fingerprint) in combination with -F (find host) to
search for a host in ~/.ssh/known_hosts and display its fingerprint;
ok markus@
openbsd-compat/openssl-compat.{c,h}] Bug #1437 Move the OpenSSL compat
header to after OpenSSL headers, since some versions of OpenSSL have
SSLeay_add_all_algorithms as a macro already.
[ssh-keygen.c]
when hashing individual hosts (ssh-keygen -Hf hostname), make sure we
hash just the specified hostname and not the entire hostspec from the
keyfile. It may be of the form "hostname,ipaddr", which would lead to
a hash that never matches. report and fix from jp AT devnull.cz
[canohost.c channels.c cipher-acss.c defines.h dns.c gss-genr.c]
[gss-serv-krb5.c gss-serv.c log.h loginrec.c logintest.c readconf.c]
[servconf.c ssh-keygen.c ssh-keyscan.c ssh-keysign.c ssh-rand-helper.c]
[ssh.c sshconnect.c sshd.c openbsd-compat/bindresvport.c]
[openbsd-compat/bsd-arc4random.c openbsd-compat/bsd-misc.c]
[openbsd-compat/getrrsetbyname.c openbsd-compat/glob.c]
[openbsd-compat/mktemp.c openbsd-compat/port-linux.c]
[openbsd-compat/port-tun.c openbsd-compat/readpassphrase.c]
[openbsd-compat/setproctitle.c openbsd-compat/xmmap.c]
make the portable tree compile again - sprinkle unistd.h and string.h
back in. Don't redefine __unused, as it turned out to be used in
headers on Linux, and replace its use in auth-pam.c with ARGSUSED
[channels.c monitor.c session.c session.h ssh-agent.c ssh-keygen.c]
[ssh-rsa.c ssh.c sshlogin.c]
annoying spacing fixes getting in the way of real diffs
- jakob@cvs.openbsd.org 2006/03/15 08:46:44
[ssh-keygen.c]
if no key file are given when printing the DNS host record, use the
host key file(s) as default. ok djm@
[ssh-keygen.c]
Make ssh-keygen handle CR and CRLF line termination when converting IETF
format keys, in adition to vanilla LF. mindrot #1157, tested by Chris
Pepper, ok djm@
Enforce DSA key length of exactly 1024 bits to comply with FIPS-186-2,
increase minumum RSA key size to 768 bits and update man page to reflect
these. Patch originally bz#1119 (senthilkumar_sen at hotpop.com),
ok djm@, grudging ok deraadt@.
[clientloop.c packet.c serverloop.c session.c ssh-agent.c ssh-keygen.c]
[ssh.c sshconnect.c sshconnect1.c sshd.c]
no need to escape single quotes in comments, no binary change
- markus@cvs.openbsd.org 2005/10/07 11:13:57
[ssh-keygen.c]
change DSA default back to 1024, as it's defined for 1024 bits only
and this causes interop problems with other clients. moreover,
in order to improve the security of DSA you need to change more
components of DSA key generation (e.g. the internal SHA1 hash);
ok deraadt
[moduli.c ssh-keygen.c]
- removes signed/unsigned comparisons in moduli generation
- use strtonum instead of atoi where its easier
- check some strlcpy overflow and fatal instead of truncate
[ssh-keygen.1 ssh-keygen.c ssh_config.5]
add tools for managing known_hosts files with hashed hostnames, including
hashing existing files and deleting hosts by name; ok markus@ deraadt@
[auth-rsa.c auth2-gss.c auth2-pubkey.c authfile.c canohost.c channels.c
cipher.c dns.c kex.c monitor.c monitor_fdpass.c monitor_wrap.c
monitor_wrap.h nchan.c packet.c progressmeter.c scp.c sftp-server.c sftp.c
ssh-gss.h ssh-keygen.c ssh.c sshconnect.c sshconnect1.c sshlogin.c
sshpty.c]
make ssh -Wshadow clean, no functional changes
markus@ ok
There are also some portable-specific -Wshadow warnings to be fixed in
monitor.c and montior_wrap.c.
Damien Miller
Darren Tucker
Tim Rice