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CVS log for src/usr.bin/ssh/PROTOCOL.certkeys

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Default branch: MAIN
Current tag: OPENBSD_6_4_BASE

Revision 1.15 / (download) - annotate - [select for diffs], Tue Jul 3 11:39:54 2018 UTC (5 years, 10 months ago) by djm
Branch: MAIN
CVS Tags: OPENBSD_6_4_BASE, OPENBSD_6_4
Changes since 1.14: +16 -4 lines
Diff to previous 1.14 (colored) 

Improve strictness and control over RSA-SHA2 signature types:

In ssh, when an agent fails to return a RSA-SHA2 signature when
requested and falls back to RSA-SHA1 instead, retry the signature to
ensure that the public key algorithm sent in the SSH_MSG_USERAUTH
matches the one in the signature itself.

In sshd, strictly enforce that the public key algorithm sent in the
SSH_MSG_USERAUTH message matches what appears in the signature.

Make the sshd_config PubkeyAcceptedKeyTypes and
HostbasedAcceptedKeyTypes options control accepted signature algorithms
(previously they selected supported key types). This allows these
options to ban RSA-SHA1 in favour of RSA-SHA2.

Add new signature algorithms "rsa-sha2-256-cert-v01@openssh.com" and
"rsa-sha2-512-cert-v01@openssh.com" to force use of RSA-SHA2 signatures
with certificate keys.

feedback and ok markus@

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