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user 28338
AES (Advanced Encryption Standard) is a symmetrical block-cipher algorithm with a 128-bit block size, and key sizes of 128, 192 or 256 bits.
20
votes
When will AES be "upgraded"?
ChaCha20 is a stream cipher and AES is a block cipher. … As to why you think AES would be slow, as Steffen said in the comments: this only might be true for software implementations. Yet, even smartphones do have hardware accelerated AES. …
- 371
4
votes
Is GCM still recommended?
If you are to use NIST-approved ciphers, AES-GCM is the easiest to deploy, giving good performance. ChaCha/Poly is not yet NIST-blessed, so may cannot be used in certain szenarios. … And especially good reasons (no hardened library available for some languages) to prefer AES-GCM.
Additional notes
They might be talking about ease of implementation in terms of crypto libraries. …
- 371