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Information processing apparatus with a software protecting function

  • US 5,995,623 A
  • Filed: 01/27/1997
  • Issued: 11/30/1999
  • Est. Priority Date: 01/30/1996
  • Status: Expired due to Term
First Claim
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1. An information processing apparatus comprising:

  • separating means for separating inputted data into identification data and data to be encrypted;

    determination means for determining an encryption method specified by a combination of an encryption key and an encryption algorithm in accordance with said identification data separated by said separating means;

    encryption means for encrypting said data to be encrypted by utilizing said encryption method determined by said determination means, and generating encrypted data having the number of bits same as that of said data to be encrypted; and

    locating means for locating said identification data showing said encryption method used for encrypting said data to be encrypted in a predetermined position in said encrypted data.

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