Decrypting Files for Data Leakage Protection in an Enterprise Network

Abstract

A method of decrypting an encrypted file within an enterprise network is provided. The method includes identifying by a password collecting module a password entered during a file encryption procedure performed at a terminal and storing the password; receiving an encrypted file by a data leakage protection (DLP) module; and attempting to decrypt the encrypted file with the password by the DLP module.

What is claimed is: 
     
         1 . A method, comprising:
 monitoring: an application executed at a terminal;   monitoring a procedure performed with a predetermined application executed at the terminal; and   identifying a password entered by users for a file encryption procedure performed with the predetermined application.   
     
     
         2 . The method of  claim 1 , wherein the identifying further comprises identifying meta data of the password. 
     
     
         3 . The method of  claim 1 , further comprising:
 receiving an encrypted file from the terminal; and   decrypting the encrypted file with the password.   
     
     
         4 . The method of  claim 3 , wherein the decrypting is performed in a real-time manner. 
     
     
         5 . The method of  claim 3 , wherein the receiving an encrypted file further comprises identifying meta data of the encrypted file, wherein the decrypting further comprises selecting the password by determining that meta data of the encrypted file matches at least a potion of meta data of the password. 
     
     
         6 . The method of  claim 3 , wherein the decrypting comprises decrypting the encrypted file with multiple passwords obtained by executing the method of  claim 1  two or more times. 
     
     
         7 . The method of  claim 6 , wherein the receiving an encrypted file further comprises identifying meta data of the encrypted file, wherein the decrypting further comprises determining priority given to attempting to decrypt with each password according to meta data of the multiple passwords obtained by executing the method of  claim 2  several times. 
     
     
         8 . The method of  claim 6 , wherein the receiving an encrypted file further comprises identifying meta data of the encrypted file, wherein the decrypting further comprises determining a degree of match between meta data of the encrypted file and meta data of the multiple passwords obtained by executing the method of  claim 2  several times, so as to determine priority given to a decryption performed with each password. 
     
     
         9 . An apparatus, comprising:
 a processor;   a non-transitory, computer-readable medium coupled to the processor; and   logic, stored on the computer-readable medium and executed on the processor, for:
 monitoring an application executed at a terminal; 
 monitoring a procedure performed with a predetermined application executed at the terminal; and 
 identifying a password entered by users for a file encryption procedure performed with the predetermined application. 
   
     
     
         10 . The apparatus of  claim 9 , wherein the logic for identifying further comprises logic for identifying meta data of the password. 
     
     
         11 . The apparatus of  claim 9 , the logic further comprising logic for:
 receiving an encrypted file from the terminal; and   decrypting the encrypted file with the password.   
     
     
         12 . The apparatus of  claim 11 , wherein the decrypting is performed in a real-time manner. 
     
     
         13 . The apparatus of  claim 11 , wherein the logic for receiving an encrypted file further comprises logic for identifying meta data of the encrypted file, wherein the logic for decrypting further comprises logic for selecting the password by determining that meta data of the encrypted file matches at least a portion of meta data of the password. 
     
     
         14 . The apparatus of  claim 11 , wherein the logic for decrypting comprises logic for decrypting the encrypted file with multiple passwords obtained by executing the logic of  claim 9  two or more times. 
     
     
         15 . A computer programming product, comprising:
 a non-transitory, computer-readable medium; and   logic, stored on the computer-readable medium for execution on a processor, for:
 monitoring an application executed at a terminal; 
 monitoring a procedure performed with a predetermined application executed at the terminal; and 
 identifying a password entered by users for a file encryption procedure performed with the predetermined application. 
   
     
     
         16 . The computer programming product of  claim 15 , wherein the logic for identifying further comprises logic for identifying meta data of the password. 
     
     
         17 . The computer programming product of  claim 15 , the logic further comprising logic for:
 receiving an encrypted file from the terminal; and   decrypting the encrypted file with the password.   
     
     
         18 . The computer programming product of  claim 17 , wherein the decrypting is performed in a real-time manner. 
     
     
         19 . The computer programming product of  claim 17 , wherein the logic for receiving an encrypted file further comprises logic fur identifying meta data of the encrypted file, wherein the logic for decrypting further comprises logic for selecting the password by determining that meta data of the encrypted file matches at least a portion of meta data of the password. 
     
     
         20 . The computer programming product of  claim 17 , wherein the logic for decrypting comprises logic for decrypting the encrypted file with multiple passwords obtained by executing the logic of  claim 9  two or more times.