// multi-utility computation suite · offline · instant · precise
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│ [c] calcalyst_ │
│ computation suite │
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// select a module to initialize
/ search↵ open firstesc close
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// keyboard shortcuts
/focus search
Escclear search · close calc
Enteropen first result
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?toggle this panel
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// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
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dev.sec-session-timeout Calculator
Calculates session timeout policy, idle timeout duration, and absolute session lifetime for a web application in a security engineering and compliance context. NIST SP 800-63B recommends re-authentication after 30 minutes of inactivity — PCI DSS mandates session timeout after no more than 15 minutes for cardholder data environments.
Inputs
Idle
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
Abs
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
Grace
Reference formula or conversion factor shown for context.
Results
safe idle window
Sample size or count used in the calculation.
max renewals/day
Sample size or count used in the calculation.
absolute TTL
The hard expiry time after which the cached item must be fetched from the source, regardless of access patterns.