公开(公告)号：GB2351887A

公开(公告)日：2001-01-10

申请号：GB0011757

申请日：2000-05-17

Applicant: IBM

Inventor： KERIGAN SHAUN CARL ,  HARRIS JR JAMES ERROL

IPC: G06F1/00 ,  G06F21/00 ,  G11B20/00 ,  H04L9/00

Abstract: Apparatus for processing an encrypted data stream within a computer system adapted to receive the encrypted data stream from a data storage device, eg DVD 130. A data output device 138, eg display or printer is couple to a computer system and has a plurality of data output areas. An encrypted data stream is transferred from a data storage device to the data output device, the encrypted data stream being for output to one of the plurality of data output areas. The encrypted data stream is received and decrypted to produce a clear data stream for output to one of the plurality of data output areas. A decryption means 142 receives a decryption key from the computer system, the decryption key relating only to the encrypted stream associated with the one of the plurality of data output areas.

公开(公告)号：GB2351887B

公开(公告)日：2004-03-10

申请号：GB0011757

申请日：2000-05-17

Applicant: IBM

Inventor： KERIGAN SHAUN CARL ,  HARRIS JR JAMES ERROL

IPC: G06F1/00 ,  G06F21/00 ,  G11B20/00 ,  H04L9/00