Administration and utilization of secret fresh random numbers in a networked environment

摘要

In a public-key cryptography employs a EI- Gamal algorithm, and secret new random numbers are generated by the server, a user respective passage opening or individual users is determined by hashing the biometric information (fingerprint, voiceprint, retina scan, or face scan) using the private key of the user identification key is encrypted by a symmetric algorithm is held in the storage device accessible to the server, the new random number and the encrypted private key is sent over the time, the non-secured network to a user equipment required. An attacker finds a random number or a random number to prevent the recruitment in bulk replay attacks, while authenticating the user to the server at least one of the secret question and answer protocol exchanges to deliver a new random number to the user equipment from the server using the previous It is used. In this exchange, which is used by a user when a part of the first random number, and the query-response protocol to be distributed to the user for use to sign the document to form a first and a second random signature of a hash of the number 2 random number is in encrypted form with a signature by the server for the new hash value, and the first and the second random number and the new value supplied to the user equipment.