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This NIST technical publication specifies a family of Ascon-based cryptographic functions intended for devices with limited computing resources. It describes authenticated encryption with associated data, hashing and extendable-output functions, providing a common notation and the underlying permutation before setting out the individual constructions.
The document explains inputs, outputs, processing steps, parameter choices and implementation requirements. Its diagrams and algorithms support readers working from the specification, while the security discussion identifies the conditions under which the stated properties apply. This complete August 2025 standard retains the original figures, tables, references, appendices and publication notices, making it suitable for readers studying lightweight cryptographic design and implementation.
Meltem Sönmez Turan, Kerry A. McKay, Donghoon Chang, Jinkeon Kang and John Kelsey (2025). Ascon-Based Lightweight Cryptography Standards for Constrained Devices: Authenticated Encryption, Hash, and Extendable Output Functions. NIST Special Publication 800-232. https://doi.org/10.6028/NIST.SP.800-232. Republished courtesy of the National Institute of Standards and Technology.