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

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

mod_qos utilities 11.74                             May 2023                                           QSSIGN(1)

       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.

       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

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

       -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.

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)

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