What is Encryption? | UpGuard

This document is an informational overview of encryption that explains how symmetric and public-key cryptography work, summarizes major algorithms (AES, DES/3DES, RSA, ECC, Diffie-Hellman, quantum key distribution), discusses practical uses (data in transit/at rest, payments, crypto-shredding), limitations (key management, processing plaintext, cryptographic attacks), and gives historical context; it concludes with vendor risk management and UpGuard product promotion. It does not describe a cybersecurity incident, malware, breach, or IOCs.