NAME

decryptcore —

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

The decryptcore utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

kgdb(1), capsicum(4), dumpon(8), savecore(8), syslogd(8)

AUTHORS

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