> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# AES

> A widely used symmetric-key encryption algorithm for protecting data confidentiality.

# AES

A widely used symmetric-key encryption algorithm for protecting data confidentiality.

## Definition

A widely used symmetric-key encryption algorithm for protecting data confidentiality.

## Why it matters

Cryptography provides the mathematical foundation for keys, signatures, privacy, integrity, and verification.

## Related knowledge

* [Hash Function](/generated/v2/glossary/hash-function) — term

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**Canonical knowledge ID:** `glossary:aes`