Cryptographic extensions for custom and GPU-like architectures

The PhD thesis work deals with the exploration of hardware architectures dedicated to cryptographic applications, in particular, solutions based on reconfigurable hardware, such as FPGA. The thesis presents the results achieved for the acceleration of operations essential to homomorphic cryptography, specifically, the integer multiplication of very long operands, based on the Schonhage-Strassen algorithm and implemented with an ad-hoc FPGA hardware. Then, the thesis reports the exploration of novelty approaches for cryptographic acceleration, based on vectorial dedicated architectures, software programmable, with the corresponding implementation of symmetric and public key operations (namely, AES encryption and Montgomery multiplication) with improved performances.