Certificate Rotation Automation

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Your question is Certificate Rotation Automation. Start with the requirements on the right.

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Problem

Can you write a function to automate the rotation and validation of expired security certificates across multiple cloud environments?

Implement rotate_and_validate(certificates, now, rotation_window, policies). Return actions only for certificates expiring at or before now + rotation_window, sorted by cloud, environment, service, and certificate ID. A replacement is valid when its ID is new and unique, it references the original certificate, matches cloud, environment, and service, expires later, and satisfies that cloud's issuer and key-type policy. Return rotated or blocked with a specific reason.

Constraints

1 <= len(certificates) <= 500
Each certificate has unique id, cloud, environment, service, and integer expires_at fields
Each replacement has id, replaces, cloud, environment, service, expires_at, issuer, and key_type fields when present
0 <= rotation_window <= 10^9
Each cloud policy contains issuers and key_types arrays
Return one action for every certificate with expires_at <= now + rotation_window

Function Signature

def rotate_and_validate(certificates, now, rotation_window, policies):

Your solutionPython 3

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