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AES vs ChaCha20: differences, advantages and when to use each
AES and ChaCha20 are two modern symmetric encryption algorithms. Which one is best depending on the context?
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24 de septiembre de 2025
1 min de lectura
#AES
#ChaCha20
#encryption comparison
#cryptographic security
AES vs ChaCha20: differences, advantages and when to use each
Both AES and ChaCha20 are symmetric encryption algorithms, but they differ in their structure, performance, and resistance to certain attacks.
AES
- Based on block operations.
- Highly hardware optimized.
- Used in TLS, VPNs, secure storage.
##ChaCha20
- Stream encryption.
- Fast on devices without AES acceleration.
- Used by Google and OpenSSH.
Comparison
| Feature | AES | ChaCha20 |
|---|---|---|
| Speed on modern CPUs | High | Medium |
| Speed on mobiles | Low | High |
| Security | High | High |
| Simplicity of implementation | Medium | High |
Which one to choose?
- Use AES if you have compatible hardware and need high performance.
- Use ChaCha20 on mobile or where AES is not optimized for support.
