IS-CUBE: An isogeny-based compact KEM using a boxed SIDH diagram

ePrint Report: IS-CUBE: An isogeny-based compact KEM using a boxed SIDH diagram

Tomoki Moriya

Isogeny-based cryptography is one of the candidates for post-quantum cryptography. One of the benefits of using isogeny-based cryptography is its compactness. In particular, a key exchange scheme SIDH forgave us to use a $4\lambda$-bit prime for the security parameter $\lambda$.


Unfortunately, SIDH was broken in 2022 by some studies. After that, some isogeny-based key exchange and public key encryption schemes have been proposed; however, most of …

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