5 ms·
Is this seen as a replacement/competitor for ChaCha20 that has NIST approval? Trying to figure out the impact here.
by devman0 4y ago
Is this seen as a replacement/competitor for ChaCha20 that has NIST approval? Trying to figure out the impact here.
- JoachimS 4y agoNo, this is a lightweight block cipher, requiring low resources. ChaCha20 is a stream cipher based around 64 bit operations and a large internal state. Ascon is more a replacement to AES equipped with a authenticated encryption mode (AEAD even). (Yes, technically Ascon also has 64 bit operations, but crucially not addition.) ChaCha20 is an ARX construction. Ascon is Sponge construction (more akin to Keccak and all its versions and friends).