Patent ID: 8411850
Filing Date: 2013-04-02
Classification: G06F,H04L

Abstract:
1. A method for decrypting a password in a multi-node parallel-processing environment including a master node and a plurality of work nodes, the method comprising the steps of: receiving, by the master node, selection information on encrypted e selection from a user; generating, by the master node, password candidate generation information to transmit to the plurality of work nodes together with a password decryption command, the password candidate generation information allowing the plurality of work nodes to have different password candidate ranges using password decryption information comprising a maximum password length, a minimum password length, and a string set constituting the password; decrypting, by the work node, the password using the password candidate generation information; and transmitting, by the work node, the password decryption result to the master node, wherein, in the password candidate generation information, when the minimum password length is 1, (password candidate generation starting point, the number of the password candidates to be decrypted)=(nD, N−(c−1) is transmitted to one of the work nodes, and (password candidate generation starting point, the number of the password candidates to be decrypted)=(nD,D) is transmitted to the other work nodes, where N is the total number of the password candidates, c is the number of the work nodes, D is N/c, and n means an n-th work node.