Data storage and verification method, device, terminal equipment and storage medium

The invention is applicable to the field of NAND flash memories, and provides a data storage method and verification method, a device, terminal equipment and a storage medium. The method comprises thesteps of generating a first two-dimensional array based on to-be-written first data when a writing operation is executed; generating a first row direction ECC code, a first column direction ECC codeand a first oblique arrangement direction ECC code based on the first two-dimensional array; generating a first bit of a first overall ECC code based on the first data, and generating a second bit ofthe first overall ECC code based on the first row direction ECC code, the first column direction ECC code and the first oblique direction ECC code; combining the first row direction ECC code, the first column direction ECC code, the first oblique direction ECC code and the first overall ECC code into a first ECC code; writing the first data and the first ECC code into an NAND flash memory; when read operation is performed o