DECRYPTCORE(8)

NAME
decryptcore - decrypt a core dump of the operating system

SYNOPSIS
decryptcore [-fLv] -p privatekeyfile -k keyfile -e encryptedcore -c core
decryptcore [-fLv] [-d crashdir] -p privatekeyfile -n dumpnr

DESCRIPTION
The decryptcore utility first decrypts keyfile using privatekeyfile and then uses the resulting key to decrypt encryptedcore saved by savecore(8). The result is saved in core.

Alternatively a user can decrypt a core dump numbered dumpnr from the crashdir directory. In this case a dump key from the key.# file is used and the result is saved in the vmcore.# file where “#” corresponds to dumpnr.

By default decryptcore does not overwrite an old core dump as a user might want to store the core somewhere else for the future. This behaviour can be changed using the -f flag.

The decryptcore utility can be started with the following command line arguments:

-f  Remove a decryped core dump if it already exists.

-L  Write log messages to syslogd(8).

-v  Print or log verbose/debugging information. This option can be specified multiple times to raise the verbosity level.

-p privatekeyfile
    Specify location of a private key file which will be used to decrypt a dump key file.

-k keyfile
    Specify location of a dump key file.

-e encryptedcore
    Specify location of an encrypted core.

-c core
    Specify location of a resulting decrypted core dump.

-d crashdir
    Specify an alternative crash dump directory. The default crash dump directory is /var/crash.

-n dumpnr
    Specify a number of a crash dump to be decrypted.

EXIT STATUS

SEE ALSO
kgdb(1) (ports/devel/gdb), capsicum(4), dumpon(8), savecore(8), syslogd(8)

AUTHORS
The decryptcore utility was implemented by Konrad Witaszczyk <def@FreeBSD.org>.