Patent ID: 6330675
Filing Date: 2001-12-11
Classification: G11B

Abstract:
A method for securely decrypting and writing a first encrypted digital file to a recordable storage medium, comprising:preprocessing and re-encrypting the first encrypted digital file to form a second encrypted digital file so that substantially less than all of the first encrypted digital file is in decrypted form at any instant, said preprocessing including decrypting the first encrypted digital file, said preprocessing further characterized by a first data flow rate;storing the second encrypted digital file to a local storage medium;decrypting the second encrypted data file;writing results of decrypting the second encrypted digital file to a recordable storage medium so that substantially less than all of the results of decrypting the second encrypted digital file is in decrypted and unwritten form at any instant, said decrypting and writing characterized by a second data flow rate which is greater than the first data flow rate; andresponsive to decrypting and writing the results of decrypting the second encrypted digital file to the recordable storage medium, deleting the second encrypted digital file from the local storage medium.