A method for data verification is provided. An input block of data is received together with a modulo-based input error detection code associated with the input block, the input block comprising a plurality of sub-blocks. A subset of the sub-blocks is selected to be included in an output block. An error correction term is determined based on the selected subset. The selected subset of the sub-blocks is concatenated together with the input error detection code and the error correction term to generate an output block for conveyance to a destination processor.