Patent EP0138219A2 successfully refreshed from Google Patents.
EP0138219A2
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EP
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Method of storing encrypted data on a card
Assignee: Toshiba Corp
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Filing: 1984-10-15
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Granted: —
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Expires: 2004-10-15
Abstract
Abstract A memory card has a card medium (11) and a laser memory (17) for storing data. A data processing section (16) for storing encryption and/or decryption key data, an encryption and/or decryption program and a password is arranged in the card medium (11). When the same password as prestored in the data processing section (16) is input, the input data is encrypted and/or decrypted in accordance with the encryption and/or decryption key data and the encryption and/or decryption program. The encrypted and/or decrypted data is stored in the laser memory (17).
Inventors
- 👤 Katsuhisa C/O Patent Division Hirokawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 14:52
CPC Classifications
G; G07; G07F; G07F7/00; G07F7/08; G07F7/10; G07F7/1008; G06; G06K; G06K1/00; G06K1/12; G06K1/126; G06K17/00; G06K19/00; G06K19/06; G06K19/067; G06K19/07; G06K19/08; G06K7/00; G06K7/0013; G06K7/0021; G06K7/0086; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/341; G06Q20/357; G06Q20/36; G06Q20/367; G06Q20/38; G06Q20/382; G06Q20/40; G06Q20/409; G06Q20/4097; G06Q20/40975
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
A memory card comprising: a card medium (11); and nonvolatile memory means (17) arranged in said card medium (11) for storing data, characterized in that data processing means (16) is arranged in said card medium (11) to encrypt and decrypt input data, and said nonvolatile memory means (17) stores encrypted data.
Claim 2
Dependent Claim
51 words
A memory card comprising: a card medium (11); and nonvolatile memory means (17) arranged in said card medium (11) for storing data, characterized in that data processing means (16) is arranged in said card medium (11) to encrypt and decrypt input data, and said nonvolatile memory means (17) stores encrypted data.
Claim 3
Dependent Claim
19 words
A memory card according to claim 1, characterized in that said nonvolatile memory means (17) comprises a laser memory.
Claim 4
Dependent Claim
22 words
A memory card according to claim 1, characterized in that said nonvolatile memory means (17) comprises a magnetic memory of vertical magnetization.
Claim 5
Dependent Claim
30 words
A memory card according to claim 1, characterized in that said data processing means (16) stores a password and starts encryption and/or decryption when the correct password is externally entered.
Claim 6
Dependent Claim
47 words
A memory card according to claim 1, characterized in that said data processing means (16) stores encryption and/or decryption key data and an encryption and/or decryption program and processes the input data and the encryption and/or decryption key data in accordance with the encryption and/or decryption program.
References Cited (Backward Citations)
No citation records indexed.
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