A method and engine for hash calculation, the method comprising receiving data blocks via an input module, providing clock cycles by a clock module, calculating a hash from a received data block by a process module including a data pipeline and a state pipeline, the hash calculation comprising: an input data block to the data pipeline, the data block includes a sequence of data words including X data words, wherein X is a known number, calculating, in every other clock cycle of the clock module, an new data word based on the last calculated X data words, and performing a stage of the state pipeline in each clock cycle of the clock module, in which a state is calculated based on input from the data pipeline, the input includes the last calculated X data words, and outputting the hash via an output module every predetermined number of clock cycles.