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PasswordData blob required size estimation in User Store

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Article ID: 50945

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Updated On:

Products

CA Single Sign On Secure Proxy Server (SiteMinder) CA Single Sign On SOA Security Manager (SiteMinder) CA Single Sign-On SITEMINDER

Issue/Introduction

 

How to estimate the size (in bytes) required for the PasswordData blob?

 

Resolution

 

The PasswordData blob can contain up to 32 history passwords.

It also contains:

  •   Login failures
  •   Last login time
  •   Previous login time
  •   Disabled time
  •   Last password change time

Each of them takes up to 1024 bytes.

Therefore the number of passwords to keep in the history should be multiplied by 1024, then add a buffer of a few more kilobytes.

So it makes 32.768 bytes + buffer. The PasswordData blob should have a max size of 40kB.