Enciphered sign board and composite encryption signing method

Abstract

A method for signature board encryption and encrypted signature composition belongs to the field of identity authentication. The technical proposal of the invention includes providing an encrypted signature board which has a processor module, a USB interface module, a hand-writing scanning module, an encryption / decryption algorithm module, a random number generating module and a safety storage space module, wherein private information of the user is stored in the module of the safety storage space. Connected to a computer, the invention identifies a written signature input by the user with a signature identifying software matched with the computer. The computer adopts public-key encrypted characteristic words, and the encrypted signature board adopts private-key encrypted characteristic words and performs comparison with the characteristic words stored in the safety storage space of the encrypted signature board to realize the protection of electronic signatures and the composite encryption of documents with the hardware encryption of the encrypted signature board and the software encryption of the computer. Mainly applied to the protection field of electronic signatures and personal information of computer users, the invention strengthens the safety and mobility of electronic signature carriers.

Description

Technical field [0001] The invention relates to a signature board and a signature method, in particular to an encryption signature board and a composite encryption signature method, and belongs to the field of system user identity verification. Background technique [0002] In order to solve the security problem of developing e-commerce on the Internet, electronic signatures were introduced to determine the identity of the counterparty before exchanging information and conducting commercial transactions. Electronic signatures mostly use the PKI / CA system and are managed by electronic certification agencies. The user registers the electronic security certificate and digital signature with the electronic certification authority, that is, the password registered with the certification authority, called the public key and the private key. There is a certain functional relationship between the public key and the private key. The public key is public. It is provided to the users who ne...

AI Technical Summary

Problems solved by technology

Even if a small number of users encrypt confidential information, they basically adopt a soft encryption method, and the traditional soft encryption method still uses computer memory, which makes password information and confidential information reside in memory for a long time, and is easy to be obtained by hackers. Moreover, software The keyboard input required for encryption is also very easy to be monitored. Therefore, the security strength of the software encryption method is poor and the difficulty of cracking is low.

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