47results about How to "Enhanced non-repudiation" patented technology

The invention discloses a system and method for adding real-time file dynamic tags and encryption online, which is used to transfer each file and add at least one tag related to the file and user information, according to The user's demand is encrypted for viewing after decryption by the user. At first, at least one file is transmitted through a data input unit; the file from the data input unit is converted into PDF format through a first conversion unit, and Adding at least one tag related to the file and user information via a tag adding unit; encrypting the file from the first file transfer unit through the encryption unit to form an encrypted file and generate a corresponding Decryption key: transmitting the encrypted file and the corresponding decryption key to a first storage unit for storage and a second storage unit for storage.

The invention relates to an identity authentication device and method with a digital signature, handwriting and a fingerprint combined. The identity authentication device with the digital signature, the handwriting and the fingerprint combined comprises a main control module, a fingerprint module and a handwriting module, wherein the main control module is connected with a PC, or an external connecting disk, or a mobile terminal via a USB / a serial port / a wired network / a WIFI external data interface, the handwriting module is used for adding a handwriting signature to a relevant position of an electronic document under the condition that a user needs to carry out a traditional signature on the electronic document, the fingerprint module is used for obtaining a fingerprint image and delivering the fingerprint image to the main control module, the main control module will carry out identity authentication based on the fingerprint image and add the fingerprint to a relevant position of the document, and the main control module is used for providing an encryption and decryption algorithm and a fingerprint algorithm, main logical processing, external control and communication data processing. The identity authentication device with the digital signature, the handwriting and the fingerprint combined has the advantages that a traditional signature mode can be achieved in the paperless office environment, usage habits of a user are changed as few as possible, the application reliability is higher than that achieved by only usage of a PKI system, and the problems that the traditional paper signature is prone to damage, difficult to inquire, and high in saving cost are solved.

The present invention provides a digital certificate application method and system, a fog node and a certificate authority center. The method for applying to the fog node includes: sending a traditional certificate request to an external certificate authority center; using a traditional private key to sign a unique identification number when a traditional digital certificate and the traditional private key sent by the external certificate authority center according to the traditional certificate request is received; sending an update certificate request carrying the traditional digital certificate and the signed unique identification number to the external certificate authority center; generating a fog node secret key according to a preset secret key generation rule while a central secretkey sent by the external certificate authority center is received; generating a new public key and a new private key according to the central secret key and the fog node key; sending the new public key, the traditional digital certificate, and the unique identification number to the external certificate authority center so that the external certificate authority center to publish a new digital certificate for the new public key according to the traditional digital certificate and the unique identification number. The scheme can improve the security of fog node communication.