Encryption
The process of converting data into an unreadable format using algorithms, decryptable only with the correct key.
Definition
Encryption is the process of converting plaintext data into ciphertext using an algorithm (cipher) and an encryption key, making it unreadable to unauthorized parties. Only those with the correct decryption key can restore the data to its original form. Encryption is used to protect data at rest (stored data) and data in transit (data being transmitted). Major encryption types include symmetric encryption (AES, uses same key for encryption/decryption) and asymmetric encryption (RSA, uses public/private key pairs).
Example
“When you send a message on WhatsApp, end-to-end encryption ensures only you and the recipient can read it — not even WhatsApp itself.”
Synonyms
- encoding
- ciphering
- data scrambling
- cryptographic protection
Antonyms / Opposites
- decryption
- plaintext
- unencrypted data
Images
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Related Terms
- ssl
- tls
- aes
- public-key-infrastructure