Differential D4712 Diff 14731 sbin/decryptcore/decryptcore.8

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				.\" Copyright (c) 2015 Konrad Witaszczyk <def@FreeBSD.org>
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				.Dd December 1, 2015
				.Dt DECRYPTCORE 8
				.Os
				.Sh NAME
				.Nm decryptcore
				.Nd "decrypt a core dump of the operating system"
				.Sh SYNOPSIS
				.Nm
				.Op Fl Lv
				.Fl p Ar privatekey
				.Fl k Ar key
				.Fl e Ar encryptedcore
				.Fl c Ar core
				.Nm
				.Op Fl Lv
				.Op Fl d Ar crashdir
				.Fl p Ar privatekey
				.Fl n Ar dumpnr
				.Sh DESCRIPTION
				The
				.Nm
				first decrypts
				.Ar key
				using
				.Ar privatekey
				and then uses the resulting key to decrypt
				.Ar encryptedcore
				saved by
				.Xr savecore 8 .
				Result is saved in
				.Ar core .
				.Pp
				Alternatively a user can decrypt a core dump numbered
				.Ar dumpnr
				from the
				.Ar crashdir
				directory.
				In this case a dump key from the
				.Pa key.#
				file is used and the result is saved in the
				.Pa vmcore.#
				file where
				.Dq #
				corresponds to
				.Ar dumpnr .
				.Pp
				The
				.Nm
				utility can be started with the following command line arguments:
				.Bl -tag -width ".Fl e Ar encryptedcore"
				.It Fl L
				Write log messages to
				.Xr syslogd 8 .
				.It Fl v
				Print or log verbose/debugging information.
				This option can be specified multiple times to raise the verbosity
				level.
				.It Fl p Ar privatekey
				Specify location of a private key which will be used to decrypt the
				.Ar key
				file.
				.It Fl k Ar key
				Specify location of a dump key.
				.It Fl e Ar encrytpedcore
				Specify location of an encrypted core.
				.It Fl c Ar core
				Specify location of a resulting decrypted core dump.
				.It Fl d Ar crashdir
				Specify an alternative crash dump directory. The default crash dump directory is
				.Pa /var/crash .
				.It Fl n Ar dumpnr
				Specify a number of a crash dump to be decrypted.
				.El
				.Sh EXIT STATUS
				The
				.Nm
				utility exits 0 on success, and >0 if an error occurs.
				.Sh SEE ALSO
				.Xr capsicum 4 ,
				.Xr dumpon 8 ,
				.Xr kgdb 1 ,
				.Xr savecore 8 ,
				.Xr syslogd 8
				.Sh AUTHORS
				The
				.Nm
				was implemented by
				.An -nosplit
				.An Konrad Witaszczyk Aq Mt def@FreeBSD.org .