Patent ID: 11868457
Assignee: NEOPAD INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. The user authentication and signature method of claim 10, wherein generating of the encryption key for user authentication by re-encrypting the coordinate values of the pixel touched again and the color values of the pixel touched again or stored biometrics information of the user comprises one of:
(a) selecting at least one of the coordinate values of the pixel touched again, the color values of the pixel touched again, and the biometrics of the user acquired from the user using the biometrics input/output device and stored in an information device memory of the user, encrypting each piece of the selected values, and generating, as the encryption key for user authentication, any one of data obtained by combining the encrypted pieces of data, data obtained by combining one or more of the encrypted pieces of data and a non-encrypted data, and data obtained by re-encrypting a combined data; and
(b) combining at least two of the coordinate values of the pixel touched again, the color values of the pixel touched again, and the biometrics of the user acquired from the user using the biometrics input/output device and stored in the information device memory of the user, encrypting the combined data, and then generating, as the encryption key for user authentication, any one of the encrypted data, data obtained by combining the combined and encrypted data and the non-encrypted data, and data obtained by re-encrypting the combined data.