Jan 26, 2023 · We prove a multi-user security bound on the AEAD security of ChaCha20-Poly1305 and establish the tightness of each term in our bound through matching attacks.
Nov 13, 2021 · We prove a multi-user security bound on the AEAD security of ChaCha20-Poly1305 and establish the tightness of each term in our bound through matching attacks.
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Nov 19, 2021 · ABSTRACT. The ChaCha20-Poly1305 AEAD scheme is being increasingly wid- ely deployed in practice. Practitioners need proven security bounds.
Security. The ChaCha20-Poly1305 construction is generally secure in the standard model and the ideal permutation model, for the single- and multi-user setting. ...
Adaptively-secure key exchange allows the establishment of secure channels even in the presence of an adversary that can corrupt parties adaptively and obtain ...
ChaCha and Poly were designed separately and independently by Bernstein. They were combined into an AEAD scheme by Langley without security proof.
Feb 21, 2020 · ChaCha20 is at least as secure as AES256 or better. They're both 256-bit keys. ChaCha20 appears to be less vulnerable to timing attacks, and is easier to ...
Missing: Multi- Setting
Feb 28, 2024 · Yes. ChaCha20-Poly1305 would satisfy the notion of IND-CCA2 secure. For semantic security you only need IND-CPA, and IND-CCA2 implies IND-CPA.
Unfortunately, as noted, ChaCha20-Poly1305 does not have FIPS approval, which does mean users who need FIPS compliance cannot currently use crypt4gh. The ...
This work proves a multi-user security bound on the AEAD security of ChaCha20-Poly1305 and establishes the tightness of each term in the authors' bound ...