Adds a protocol extension to allow grafting certificates supplied by
ssh-add to keys loaded from PKCS#11 tokens in the agent.
feedback/ok markus@
OpenBSD-Commit-ID: bb5433cd28ede2bc910996eb3c0b53e20f86037f
Extract the key label or X.509 subject string when PKCS#11 keys
are retrieved from the token and plumb this through to places where
it may be used as a comment.
based on https://github.com/openssh/openssh-portable/pull/138
by Danielle Church
feedback and ok markus@
OpenBSD-Commit-ID: cae1fda10d9e10971dea29520916e27cfec7ca35
[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
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