An organization needs to ensure that encrypted data remains accessible even if an employee's cryptographic credentials are lost or become unavailable. Which of the following methods BEST achieves this objective?
Applying key stretching techniques
Utilizing certificate revocation lists
Implementing key escrow
Issuing digital certificates
Implementing key escrow involves securely storing copies of cryptographic keys with a trusted third party or designated authority. This allows the organization to recover encrypted data if the original keys are lost or inaccessible. Key stretching strengthens weak keys against brute-force attacks but does not help in recovering lost keys. Digital certificates associate public keys with user identities but do not provide a means for key recovery. Certificate Revocation Lists (CRLs) are used to revoke untrusted certificates and do not aid in data recovery.
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