pam_schroedinger - Uncertainty for brute forcers during login

Property Value
Distribution openSUSE Tumbleweed
Repository Security all
Package filename pam_schroedinger-0.2s-2.26.i586.rpm
Package name pam_schroedinger
Package version 0.2s
Package release 2.26
Package architecture i586
Package type rpm
Category Productivity/Networking/Security
License GPL-3.0+
Maintainer -
Download size 13.19 KB
Installed size 16.89 KB
pam_schroedinger prevents from dicitionary/brute-force attacks against PAM
accounts by only returning PAM_SUCCESS if there was no previous login or
attempt within a certain timeframe. In a common scenario, users do not
authenticate more than once in a second. Everything else looks like a brute
force. pam_schroedinger prevents PAM accounts from dictionary attacks much
better than a sleep-based delay hardcoded in the authentication mechanism, as
used today in su or sudo for example. The attacker will see no delay in his
attack, but he will not see which login token succeeds, even if he tried the
right one. So there is a certain uncertainty added to the login process so
attackers can never be sure the cat is dead or alive. This is the opposite of


Package Version Architecture Repository
pam_schroedinger-0.2s-2.26.x86_64.rpm 0.2s x86_64 Security
pam_schroedinger - - -


Name Value -
systemd -


Name Value
pam_schroedinger = 0.2s-2.26
pam_schroedinger(x86-32) = 0.2s-2.26


Type URL
Binary Package pam_schroedinger-0.2s-2.26.i586.rpm
Source Package pam_schroedinger-0.2s-2.26.src.rpm

Install Howto

  1. Add the Security repository:
    # zypper addrepo security
  2. Install pam_schroedinger rpm package:
    # zypper install pam_schroedinger




2015-01-20 -
- initial package

See Also

Package Description
pam_u2f-1.0.7-13.9.i586.rpm U2F authentication integration into PAM
pam_u2f-1.0.7-13.9.x86_64.rpm U2F authentication integration into PAM
pam_yubico-2.26-18.11.i586.rpm Yubico Pluggable Authentication Module (PAM)
pam_yubico-2.26-18.11.x86_64.rpm Yubico Pluggable Authentication Module (PAM)
passwordsafe-1.03~beta-1.169.i586.rpm A password database utility
passwordsafe-1.03~beta-1.169.x86_64.rpm A password database utility
pax-utils-1.2.2-116.12.i586.rpm Tools to Check ELF Files for Security Relevant Properties
pax-utils-1.2.2-116.12.x86_64.rpm Tools to Check ELF Files for Security Relevant Properties
pdfcrack-0.17-1.1.i586.rpm A Password Recovery Tool for PDF-files
pdfcrack-0.17-1.1.x86_64.rpm A Password Recovery Tool for PDF-files
perl-File-Find-Rule-0.34-24.18.noarch.rpm Alternative interface to File::Find
perl-Number-Compare-0.03-26.19.noarch.rpm Numeric comparisons
perl-Text-Glob-0.11-26.11.noarch.rpm Match Globbing Patterns Against Text
perl-macros-1.0-22.4.i586.rpm Perl macros for rpm build
perl-macros-1.0-22.4.x86_64.rpm Perl macros for rpm build