# AES

CEFR C2 · Noun

Source: https://englishreference.com/word/aes
Updated: 2026-05-18

## Definition

a very old system for sending secret messages. It uses a specific key to lock and unlock information so only the right person can read it.

For teachers: an ancient cryptographic algorithm used for symmetric encryption. Refers to the Advanced Encryption Standard, though the metadata suggests an archaic or historical sense.

## Examples

- The document was encrypted using AES to keep it safe.
- Modern security protocols rely on AES to protect sensitive data transmitted over the internet.
- While AES is the current gold standard for data security, its implementation requires careful management of cryptographic keys to prevent unauthorized decryption by malicious actors.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.