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Terme informatique

Encryption

The transformation of legible data into unusable data without the appropriate key.

Cybersecurity
TopicCybersecurity →
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Simple definition

Encryption protects the information so that it cannot be read by an unauthorized person.

Technical definition

Symmetric encryption uses the same key to encrypt and decrypt, while the asymmetric uses a pair of public and private keys. BitLocker and VPN The Commission has been working on these mechanisms.

What is it used for ?

Protect stored data and communications in transit.

Practical example

HTTPS Encrypts the communication between the browser and the server so that an intermediary cannot easily read the information exchanged.

Common issues

  • Lost key
  • Obsolete algorithm
  • Data encrypted but not protected backups
  • Improper management of certificates

BitLocker · VPN · SSL/TLS certificate · HTTPS · Hashish

Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.

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