Ascon (cipher)
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Ascon is a family of lightweight authenticated ciphers and hash functions that have been selected by the U.S. National Institute of Standards and Technology (NIST) for cryptography on resource-constrained devices in 2025, specified in NIST SP 800-232.
Ascon is a family of lightweight authenticated ciphers and hash functions that have been selected by the U.S. National Institute of Standards and Technology (NIST) for cryptography on resource-constrained devices in 2025, specified in NIST SP 800-232. The state consists of 320 bits, so the capacity c=320-r . The state is initialized by an initialization vector IV (constant for each cipher type, e.g., hex 80400c0600000000 for Ascon-128) concatenated with K and N.
See also
CAESAR Competition Simon and Speck, earlier lightweight cipher families released by the U.S. National Security Agency
References
Sources
NIST (SP 800-232), "Ascon-Based Lightweight Cryptography Standards for Constrained Devices: Authenticated Encryption, Hash, and Extendable Output Functions" , nist.gov, National Institute of Standards and Technology
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