Encryption method, chip and electronic equipment

The embodiment of the invention provides an encryption method, a chip and electronic equipment, and is applied to the technical field of data encryption. In the encryption method, a multi-order modular reduction operation result is obtained by performing modular reduction operation on a multi-order operation result in the form of an in-situ algorithm in an XOR operation mode. Compared with a mode that modular reduction is carried out in a post-shift bit exclusive-or operation mode based on operation bits of a processing platform, the method and the device have the advantages that the number of bit exclusive-or operation times, the operation complexity, the operation power consumption, the occupied area of a chip and the occupied amount of storage resources are reduced. In addition, the power consumption difference between the in-place exclusive-or operation and the bit-AND operation is considered, and a 2N-order coefficient array (including an N-order plaintext and an N-order key) is split through a first spl