cryptography Cryptography, or cryptology (from "hidden, secret"; and ''graphein'', "to write", or ''-logy, -logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of Adversary (cryptography), ...

, the bricklayer function is a part of a round function that can be decomposed into identical independent Boolean operations on the partitioned pieces of its input data, so called bundles. The term was introduced by Daemen and Rijmen in 2001. If the underlying function transforming the bundle is nonlinear, it is traditionally called an

S-box In cryptography, an S-box (substitution-box) is a basic component of symmetric key algorithms which performs substitution. In block ciphers, they are typically used to obscure the relationship between the key and the ciphertext, thus ensuring Clau ...

. If the function is linear, Daemen and Rijmen use for it the term D-box (after diffusion).

References

Sources

* * Cryptographic primitives {{cryptography-stub