Signature checking method and device, computer equipment and storage medium

The invention relates to a signature checking method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a to-be-checked electronic handwritten signature, and determining a user identification character corresponding to the electronic handwritten signature; performing vector transformation on the user identification character to obtain a first target vector; image transformation processing is carried out on the electronic handwritten signature to obtain a target binary image, the target binary image is input into a target vector transformation model to obtain a second target vector, and the dimension of the first target vector is the same as that of the second target vector; and according to the first target vector and the second target vector, determining the similarity between the electronic handwritten signature and the user identification character, and under the condition that the similarity meets a target similarity conditi