RECORDING DEVICE, CONTROLLER, CONTROL METHOD OF RECORDING DEVICE
First Claim
1. A recording device comprising:
- a recording medium having a plurality of sectors;
a first writing module configured to write, on a first sector of the plurality of sectors, a first data encrypted using a first encryption key and first encryption key information indicative of the first encryption key; and
a re-encrypting module configured to;
read the first data from the recording medium;
decrypt the first data using the first encryption key to generate decrypted first data;
encrypt the decrypted first data using a second encryption key to generate encrypted second data; and
write, on the first sector, the encrypted second data and second encryption key information indicative of the second encryption key.
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Accused Products
Abstract
According to some embodiments, there is provided a recording device. The recording device includes: a recording medium having a plurality of sectors; a first writing module configured to write, on a first sector of the plurality of sectors, a first data encrypted using a first encryption key and first encryption key information indicative of the first encryption key; and a re-encrypting module configured to: read the first data from the recording medium; decrypt the first data using the first encryption key to generate decrypted first data; encrypt the decrypted first data using a second encryption key to generate encrypted second data; and write, on the first sector, the encrypted second data and second encryption key information indicative of the second encryption key.
59 Citations
15 Claims
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1. A recording device comprising:
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a recording medium having a plurality of sectors; a first writing module configured to write, on a first sector of the plurality of sectors, a first data encrypted using a first encryption key and first encryption key information indicative of the first encryption key; and a re-encrypting module configured to; read the first data from the recording medium; decrypt the first data using the first encryption key to generate decrypted first data; encrypt the decrypted first data using a second encryption key to generate encrypted second data; and write, on the first sector, the encrypted second data and second encryption key information indicative of the second encryption key. - View Dependent Claims (2, 3, 4, 5)
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6. A controller comprising:
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a first controller configured to write, on a first sector of a recording medium, a first data encrypted using a first encryption key and first encryption key information indicative of the first encryption key; and a second controller configured to; read the first data from the recording medium; decrypt the first data using the first encryption key to generate decrypted first data; encrypt the decrypted first data using a second encryption key to generate encrypted second data; and write, on the first sector, the encrypted second data and second encryption key information indicative of the second encryption key. - View Dependent Claims (7, 8, 9, 10)
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11. A method of controlling a recording device, the recording device comprising a recording medium having a first sector, the method comprising:
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writing, on the first sector, a first data encrypted using a first encryption key and first encryption key information indicative of the first encryption key; reading the first data from the recording medium; decrypting the first data using the first encryption key to generate decrypted first data; encrypting the decrypted first data using a second encryption key to generate encrypted second data; and writing, on the first sector, the encrypted second data and second encryption key information indicative of the second encryption key. - View Dependent Claims (12, 13, 14, 15)
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Specification