---
name: "qssign"
section: "1"
platform: "linux"
package: "libapache2-mod-qos"
version: "11.63-1+b2"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/qssign"
---

# qssign(1)

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

## 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 signatur 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'

  Specifes 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)](/qsexec/1.md), [qsfilter2(1)](/qsfilter2/1.md), [qsgeo(1)](/qsgeo/1.md), [qsgrep(1)](/qsgrep/1.md), qshead(1), [qslog(1)](/qslog/1.md), [qslogger(1)](/qslogger/1.md), [qspng(1)](/qspng/1.md), [qsre(1)](/qsre/1.md), [qsrespeed(1)](/qsrespeed/1.md), [qsrotate(1)](/qsrotate/1.md), [qstail(1)](/qstail/1.md)

## AUTHOR

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