# Encryption

The transformation of information so it can be read only with the right key.

Canonical page: https://givegigs.com/wiki/encryption
Last updated: 2026-11-09T19:00:07.237Z
Parent topic: [information-and-digital-life](https://givegigs.com/wiki/information-and-digital-life)

## Contents
- [Overview](#wiki-section-overview-1)
- [Keys and trust](#wiki-section-keys-2)
- [Use and limitations](#wiki-section-limits-3)

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## Overview

Encryption transforms readable information into a form intended to be understood only by someone with the appropriate key. It can protect data stored on a device or data transmitted between systems. Encryption does not hide every fact about communication: metadata, compromised devices, weak keys, or exposed plaintext may still reveal information.

Explore related topics:
- [privacy](https://givegigs.com/wiki/privacy)
- [cybersecurity](https://givegigs.com/wiki/cybersecurity)
- [password-security](https://givegigs.com/wiki/password-security)

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## Keys and trust

Cryptographic systems depend on sound algorithms, correct implementations, and secure key handling. Public-key systems use related public and private keys; symmetric systems use a shared secret. A secure connection also needs a trustworthy way to verify who or what the key belongs to.

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## Use and limitations

Encryption can reduce exposure but cannot compensate for malware, unsafe backups, weak account recovery, or a recipient who redistributes information. Keep software updated, protect keys and recovery codes, and understand what a service encrypts and who can access the keys. Requirements and best practices evolve as technology changes.

## Sources

- [NIST: Cryptographic Standards and Guidelines](https://www.nist.gov/cryptography)

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