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Please explain what’s the difference between encoding, encryption, and hashing?

System Auditor Interview Question
System Auditor Interview Question

Answer:

Encoding is designed to protect the integrity of data as it crosses networks and systems, i.e. to keep its original message upon arriving, and it isn’t primarily a security function. It is easily reversible because the system for encoding is almost necessarily and by definition in wide use. Encryption is designed purely for confidentiality and is reversible only if you have the appropriate key/keys. With hashing the operation is one-way (non-reversible), and the output is of a fixed length that is usually much smaller than the input.

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Explain in public-key cryptography you have a public and a private key, and you often perform both encryption and signing functions. Which key is used for which function?Operational and Situational System Auditor Job Interview Questions: