.Sx HISTORY
section of
.Xr ssl 8
+(on non-OpenBSD systems, see
+.nh
+http://www.openbsd.org/cgi\-bin/man.cgi?query=ssl&sektion=8#HISTORY)
+.hy
contains a brief discussion of the DSA and RSA algorithms.
.Pp
The file
.Xr ssh_config 5 .
Because of the potential for abuse, this file must have strict permissions:
read/write for the user, and not accessible by others.
+It may be group-writable provided that the group in question contains only
+the user.
.Pp
.It Pa ~/.ssh/environment
Contains additional definitions for environment variables; see
.Xr sftp 1 ,
.Xr ssh-add 1 ,
.Xr ssh-agent 1 ,
+.Xr ssh-argv0 1 ,
.Xr ssh-keygen 1 ,
.Xr ssh-keyscan 1 ,
+.Xr ssh-vulnkey 1 ,
.Xr tun 4 ,
.Xr hosts.equiv 5 ,
.Xr ssh_config 5 ,