Key management refers to the process of handling cryptographic keys in a cryptosystem. It encompasses the generation, exchange, storage, use, and replacement of keys, ensuring that they are secure and accessible only to authorized entities.
Note
Losing access to cryptographic keys can lock you out of your data, much like losing the key to your home prevents entry.
Cloud providers typically offer integrated Key Management Services (KMS), which help manage cryptographic keys in a manner similar to on-premises environments.
Tip
Immediately revoke access to any key version you suspect has been compromised.
Key Rotation
Key rotation involves periodically replacing cryptographic keys to maintain security. When you create keys, you should set a rotation period.
Benefits of Key Rotation
- Enhances resistance to cryptanalysis: Frequent rotation limits the number of encrypted messages using a single key, making it harder for attackers to decipher them.
- Mitigates compromise impact: If a key is compromised, regular rotation reduces the potential data exposure.
- Ensures resilience: Regular rotation prepares systems to handle manual key rotation due to incidents or cryptographic updates.
Warning
You may need to rotate keys manually if:
A key is suspected to be compromised.
You are upgrading to a stronger key algorithm as per security guidelines.
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