Method and apparatus of recording information on and reproducing information from a recording medium
First Claim
1. A method for recording information on a medium, comprising:
- generating an encryption key based on a user password;
recording decryption information in a first area of the medium;
encrypting user-selected data using the encryption key; and
recording the encrypted data in a second area of the medium.
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Accused Products
Abstract
A method and apparatus for recording information generates an encryption key based on a user password, encrypts user-selected data using the encryption key, and records the encrypted data on the medium. The information may then be read and reproduced from the medium using another disk drive, including one which does not have prior access to decryption software compatible with the data on the medium. The information is reproduced by reading the decryption program from the disk, generating an encryption key based on an input user password using the decryption program, and then decrypting the user-selected data using the key. Through this method the encryption key and password do not have to be stored on the medium, which provides an enhanced level of protection of the recorded data.
13 Citations
24 Claims
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1. A method for recording information on a medium, comprising:
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generating an encryption key based on a user password; recording decryption information in a first area of the medium; encrypting user-selected data using the encryption key; and recording the encrypted data in a second area of the medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of reproducing information from a recording medium, comprising:
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receiving a password from a user; generating an encryption key based on the password; obtaining a decryption program recorded in a first area of the medium; and decrypting user-selected data stored in a second area of the medium using the encryption key generated based on the password. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An apparatus, comprising:
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a controller to generate an encryption key based on a user password; and a recording circuit to record decryption information in a first area of a recording medium, the controller further encrypting user-selected data using the encryption key and the recording head recording the encrypted data in a second area of the medium.
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22. An apparatus, comprising:
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a controller to generate an encryption key based on a user password; a recording head to read a decryption program from a first area of a medium; and a decrypting circuit to decrypt user-selected data stored in a second area of the medium using the encryption key generated based on the password.
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23. A method for generating a code, comprising:
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receiving program code which is distinctively received from encrypted data; receiving an input; and generating a key code using the received program code based on the received input.
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24. A method for decrypting data, comprising:
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receiving a program code which is distinctively received from encrypted data; receiving an input; generating a key code using the received program code based on the received input; receiving the encrypted data; and decrypting the encrypted data using the received program code based on the received input.
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Specification