Question 24

Escrow can assist in recovering data if the decryption key is lost.

Escrow involves placing the decryption key in a secure third-party location, allowing for recovery in the event that the key is lost. This method provides a safety net, ensuring that authorized parties can regain access to encrypted data.

A) CSR

A Certificate Signing Request (CSR) is used in the process of obtaining a digital certificate. It does not provide any means for recovering lost decryption keys, as it is primarily concerned with the issuance and authentication of certificates rather than key management.

B) Salting

Salting is a technique used to enhance password security by adding random data to passwords before hashing. While it helps protect against certain types of attacks, it does not assist in recovering lost decryption keys, as it is unrelated to key management or data recovery processes.

C) Root of trust

A root of trust is a security concept that establishes a chain of trust for system components. While crucial for ensuring the integrity of systems, it does not provide a mechanism for recovering lost decryption keys, as its focus is on trust establishment rather than key recovery.

D) Escrow

Escrow is a method where a decryption key is securely stored with a trusted third party, allowing for recovery if the original key is lost. This approach is specifically designed to mitigate the risks associated with lost keys, making it a viable option for data recovery.

Conclusion

Escrow is definitively the correct answer as it directly addresses the issue of recovering lost decryption keys by providing a secure mechanism for key storage. All other options fail to offer a solution for key recovery, focusing instead on unrelated aspects of security and trust, which do not assist in data access when keys are compromised or lost.