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vpn/ike-scan-1.9/psk-crack.1

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+.\" $Id: psk-crack.1 9313 2006-10-20 10:49:03Z rsh $
+.TH PSK-CRACK 1 "February 14, 2005"
+.\" Please adjust this date whenever revising the manpage.
+.SH NAME
+psk-crack \- Crack IKE Aggressive Mode Pre-Shared Keys
+.SH SYNOPSIS
+.B psk-crack
+.RI [ options ] " " < psk-parameters-file >
+.PP
+.B <psk-parameters-file>
+is a file containing the parameters for the pre-shared
+key cracking process in the format generated by
+.B ike-scan with the
+.B --pskcrack (-P)
+option.  This file can contain one or more entries.  For multiple entries,
+each one must be on a separate line.
+.PP
+The program can crack either MD5 or SHA1-based hashes.  The type of hash is
+automatically determined from the length of the hash (16 bytes for MD5 or
+20 bytes for SHA1).  Each entry in the
+.B <psk-parameters-file>
+is handled separately, so it is possible to crack a mixture of MD5 and SHA1
+hashes.
+.PP
+.B psk-crack
+can also crack the proprietary hash format used by Nortel Contivity / VPN
+Router systems.  When cracking Nortel format hashes, you need to specify the
+username of the hash that you are cracking with the
+.B --norteluser (-u)
+option.  When cracking Nortel format hashes, you can only crack one hash at
+a time.
+.PP
+By default,
+.B psk-crack
+will perform dictionary cracking using the default
+dictionary.  The dictionary can be changed with the
+.B --dictionary (-d)
+option, or brute-force cracking can be selected with the
+.B --bruteforce (-B)
+option.
+.SH DESCRIPTION
+.B psk-crack
+attempts to crack IKE Aggressive Mode pre-shared keys that have previously been
+gathered using
+.B ike-scan
+with the
+.B --pskcrack
+option.
+.PP
+.B psk-crack
+can operate in two different modes:
+.IP 1)
+Dictionary cracking mode: this is the default mode in which
+.B psk-crack
+tries each candidate word from the dictionary file in turn until it finds a
+match, or all the words in the dictionary have been tried.
+.IP 2)
+Brute-force cracking mode: in this mode,
+.B psk-crack
+tries all possible combinations of a specified character set up to a given
+length.
+.SH OPTIONS
+.TP
+.B --help or -h
+Display this usage message and exit.
+.TP
+.B --version or -V
+Display program version and exit.
+.TP
+.B --verbose or -v
+Display verbose progress messages.
+.TP
+.B --dictionary=<f> or -d <f>
+Set dictionary file to <f>.  The default is
+/usr/local/share/ike-scan/psk-crack-dictionary.
+.TP
+.B --norteluser=<u> or -u <u>
+Specify the username for Nortel Contivity cracking.
+This option is required when cracking pre-shared keys
+on Nortel Contivity / VPN Router systems.  These
+systems use a proprietary method to calculate the hash
+that includes the username.
+This option is only needed when cracking Nortel format
+hashes, and should not be used for standard format
+hashes.
+.TP
+.B --bruteforce=<n> or -B <n>
+Select bruteforce cracking up to <n> characters.
+.TP
+.B --charset=<s> or -c <s>
+Set bruteforce character set to <s>
+Default is "0123456789abcdefghijklmnopqrstuvwxyz"
+.SH AUTHOR
+Roy Hills <Roy.Hills@nta-monitor.com>