The 𝚂𝙺𝙸𝙽𝙽𝚈 family of block ciphers and its low-latency variant 𝙼𝙰𝙽𝚃𝙸𝚂. We present a new tweakable block cipher family 𝚂𝙺𝙸𝙽𝙽𝚈, whose goal is to compete with NSA recent design 𝚂𝙸𝙼𝙾𝙽 in terms of hardware/software performances, while proving in addition much stronger security guarantees with regards to differential/linear attacks. In particular, unlike 𝚂𝙸𝙼𝙾𝙽, we are able to provide strong bounds for all versions, and not only in the single-key model, but also in the related-key or related-tweak model. 𝚂𝙺𝙸𝙽𝙽𝚈 has flexible block/key/tweak sizes and can also benefit from very efficient threshold implementations for side-channel protection. Regarding performances, it outperforms all known ciphers for ASIC round-based implementations, while still reaching an extremely small area for serial implementations and a very good efficiency for software and micro-controllers implementations (𝚂𝙺𝙸𝙽𝙽𝚈 has the smallest total number of AND/OR/XOR gates used for encryption process). Secondly, we present 𝙼𝙰𝙽𝚃𝙸𝚂, a dedicated variant of 𝚂𝙺𝙸𝙽𝙽𝚈 for low-latency implementations, that constitutes a very efficient solution to the problem of designing a tweakable block cipher for memory encryption. 𝙼𝙰𝙽𝚃𝙸𝚂 basically reuses well understood, previously studied, known components. Yet, by putting those components together in a new fashion, we obtain a competitive cipher to 𝙿𝚁𝙸𝙽𝙲𝙴 in latency and area, while being enhanced with a tweak input.