Key committing attack on Tiaoxin-346 algorithm

Abstract Key committing security is a crucial metric of authentication encryption schemes, complementing the fundamental principles of confidentiality and integrity. It ensures that an adversary cannot decrypt a given ciphertext to different sets of key, nonce, and associated data. In this study, we explore a key committing attack on the authenticated encryption stream cipher Tiaoxin-346 from the perspective of internal state collisions. We establish a more rigorous constraint within the FROB framework by identifying a different settings of $$\left( k_{2}, Nonce, AD^{*}\right)$$ k 2 , N o n c e , A D ∗ for any specified