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Providing error detection constructions for Internet of nano-Things in constrained applications is of prominent importance. The Niederreiter cryptosystem falls into the category of code-based public-key cryptography. It is a relatively well-established scheme, but its key size and performance overheads have traditionally hindered its efficiency to be utilized for traditional computers. However, with the arrival of quantum computers, the Niederreiter cryptosystem is believed to be secure against attacks enabled by such computers, even though it has been previously shown that it is still vulnerable to fault injection and natural hardware defects. In this paper, we present fault detection schemes for the different blocks in the key generation of the Niederreiter cryptosystem using binary Goppa codes. These blocks perform finite field operations such as addition, multiplication, squaring, and inversion. The schemes are derived for different parameter sizes in order to have more flexibility and be able to choose according to the overheads to be tolerated and the required level of security. Moreover, we implement our fault detection schemes on Xilinx field-programmable gate array (FPGA) family Kintex UltraScale+ (device xcku5p-ffvd900-1-i) to benchmark the overhead induced of the proposed approaches.