NAME

       qssign - an utility to sign and verify the integrity of log data.

SYNOPSIS

       qssign -s|S <secret> [-e] [-v] [-u <name>] [-f <regex>] [-a 'sha1'|'sha256']

DESCRIPTION

       qssign  is a log data integrity check tool. It reads log data from stdin (pipe) and writes
       the data to stdout adding a sequence number and signature to ever log line.

OPTIONS

       -s <secret>
              Passphrase used to calculate signature.

       -S <program>
              Specifies a program which writes the passphrase to stdout.

       -e     Writes start/end marker when starting/stopping data signing.

       -v     Verification mode checking the integrity of signed data.

       -u <name>
              Becomes another user, e.g. www-data.

       -f <regex>
              Filter pattern (case sensitive regular expression) for messages which do  not  need
              to be signed.

       -a 'sha1'|'sha256'
              Specifies the algorithm to use. Default is sha1.

EXAMPLE

       Sign:

        TransferLog     "|/usr/bin/qssign     -s     password     -e     |/usr/bin/qsrotate    -o
       /var/log/apache/access.log"

       Verify:

        cat access.log | qssign -s password -v

SEE ALSO

       qsdt(1), qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1),  qslog(1),  qslogger(1),
       qspng(1), qsre(1), qsrespeed(1), qsrotate(1), qstail(1)

AUTHOR

       Pascal Buchbinder, http://mod-qos.sourceforge.net/