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
The decryptcore utility exits 0 on success, and >0 if an error occurs.
SEE ALSO
kgdb(1) (ports/devel/gdb), capsicum(4), dumpon(8), savecore(8), syslogd(8)
AUTHORS
The decryptcore utility was implemented by Konrad Witaszczyk ⟨[email protected]⟩.