He coordinated the Symmetric Techniques Virtual Lab (STVL) for ECRYPT. Robshaw's notable work includes the cryptanalysis of a number of cryptographic primitives, including the extension of linear cryptanalysis to use multiple approximations, and the design of the block ciphers Crab and RC6.
Robshaw played a key role in organizing the Symmetric Techniques Virtual Lab (STVL) for ECRYPT. His most significant achievements include breaking several cryptographic primitives, such as extending linear cryptanalysis with multiple approximations, and creating the block ciphers Crab and RC6.