The linear layer is a core component in any substitution-permutation network block cipher.
Its design significantly influences both the security and the efficiency of the resulting block …

Block ciphers encrypt blocks of plaintext, messages, into blocks of ciphertext under the
action of a secret key, and the process of encryption is reversed by decryption which uses …

The white box attack context as described in [1, 2] is the common setting where
cryptographic software is executed in an untrusted environment—ie an attacker has gained …

Although all current scientific white-box approaches of standardized cryptographic primitives
are broken, there is still a large number of companies which sell “secure” white-box …

In this paper we classify all optimal 4 bit S-boxes. Remarkably, up to affine equivalence,
there are only 16 different optimal S-boxes. This observation can be used to efficiently …

We introduce the Sparkle family of permutations operating on 256, 384 and 512 bits. These
are combined with the Beetle mode to construct a family of authenticated ciphers …

In this paper we pick up an old challenge to design public key or white-box constructions
from symmetric cipher components. We design several encryption schemes based on the …

In order to protect AES software running on untrusted platforms, Chow et al.(2002) designed
a white-box implementation. However, Billet et al.(2004) showed that the secret key can be …

With the advent of the Internet of Things (IoT), a myriad of devices are being connected to
one another in order to exchange information. This information has to be secured …

In the white-box attack context, ie, the setting where an implementation of a cryptographic
algorithm is executed on an untrusted platform, the adversary has full access to the …