3.6.1.4 Cryptographic keys are stored in the fewest possible locations
Defined Approach Requirements
3.6.1.4 Cryptographic keys are stored in the fewest possible locations.
Customized Approach Objective
Cryptographic keys are retained only where necessary.
Defined Approach Testing Procedures
3.6.1.4 Examine key storage locations and observe processes to verify that keys are stored in the fewest possible locations.
Purpose
Storing any cryptographic keys in the fewest locations helps an organization track and monitor all key locations and minimizes the potential for keys to be exposed to unauthorized parties.
purpose
Change cryptographic keys at the end of their defined cryptoperiod or if compromised.
compliance strategies
- Key rotation schedules
- Incident-driven key changes
typical policies
- Key Rotation Policy
common pitfalls
- Keys not rotated
- No process for compromise
type
Technical/Process Control
difficulty
High
key risks
- Long-term key exposure
recommendations
- Automate key rotation and compromise response
Eligible SAQ
- SAQ-D MERCHANT
- SAQ-D SERVICE PROVIDER
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