发明名称 |
Method of distributing computer data files |
摘要 |
A method of distributing a plurality of data files to a plurality of recipients including the steps of: placing encrypted copies of the data files to be distributed on a plurality of identical media and providing the recipients with media reading devices having data file decryption capability; logically arranging the data files into data file groups; in response to a recipient's request for access to selected file groups providing the recipient with a group access map indicative of the file groups to which access is requested; in further response to a recipient's request for access to selected file groups providing the recipient with a password to be used for access verification; completing an access verification operation using the group access map and the password and data indicative of the media being read and data indicative of the reading device being used; providing access to the data files in the file groups to which access is requested by use of the group access map; and decrypting the accessed data files.
|
申请公布号 |
US5058162(A) |
申请公布日期 |
1991.10.15 |
申请号 |
US19900564911 |
申请日期 |
1990.08.09 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
SANTON, JOHN C.;NIELSEN, KENNETH R.;ARMBRUST, CHRISTEN M.;SHAH, PANKAJ B.;HAND, STEVEN J. |
分类号 |
G06F3/06;G06F1/00;G06F3/08;G06F12/00;G06F12/14;G06F21/00;G06F21/24;G07F17/16 |
主分类号 |
G06F3/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|