[PCI DSS 1.x] 3.5.2 Store cryptographic keys securely in the fewest possible locations and forms.

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[PCI-DSS] 3.5.2 Store cryptographic keys securely in the fewest possible locations and forms.

3.5.2 Examine system configuration files to verify that keys are stored in encrypted format and that key-encrypting keys are stored separately from data-encrypting keys.