US5007083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secure computer
Assignee: Advanced Micro Devices Inc
•
Filing: 1985-01-16
•
Granted: 1991-04-09
•
Expires: 2005-01-16
Abstract
Abstract A computer or communication system having physically secure vault means which include data source, receiver and decoder-encoder (cryptosystem). Data outside the vault means is coded and thereby protecting its loss from electronic tapping. Clear data inside the vault means is protected by the vault.
Inventors
- 👤 James N. Constant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:54
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/08; Y; Y10; Y10S; Y10S257/00; Y10S257/922
Claims Analysis
Total Claims: 69
Claim 1
Independent Claim
38 words
A means for protecting information containing at least one of a central processing unit (CPU) and memory and at least one of an encrypter and decrypter, said means being temporarily inserted in a computer or information transfer device.
Claim 2
Dependent Claim
38 words
A means for protecting information containing at least one of a central processing unit (CPU) and memory and at least one of an encrypter and decrypter, said means being temporarily inserted in a computer or information transfer device.
Claim 3
Independent Claim
45 words
A method for protecting information including the steps of: containing at least one of an information source or sink and at least one of an encrypter and decrypter in a protecting means; and temporarily inserting said protecting means in one of a transmitter or receiver.
Claim 4
Independent Claim
45 words
A method for protecting information including the steps of: containing at least one of an information source or sink and at least one of an encrypter and decrypter in a protecting means; and temporarily inserting said protecting means in one of a transmitter or receiver.
Claim 5
Dependent Claim
32 words
A means for protecting information containing a central processing unit (CPU) and at least one of an encrypter and decrypter, said means being temporarily inserted in a computer or information transfer device.
Claim 6
Dependent Claim
32 words
A means for protecting information containing a central processing unit (CPU) and at least one of an encrypter and decrypter, said means being temporarily inserted in a computer or information transfer device.
Claim 7
Dependent Claim
11 words
The system of claim 3 wherein said means contains a memory.
Claim 8
Independent Claim
41 words
A method for protecting information including the steps of: containing a central processing unit (CPU) and at least one of an encrypter and decrypter in a protecting means; and temporarily inserting said protecting means in a computer or information transfer device.
Claim 9
Independent Claim
41 words
A method for protecting information including the steps of: containing a central processing unit (CPU) and at least one of an encrypter and decrypter in a protecting means; and temporarily inserting said protecting means in a computer or information transfer device.
Claim 10
Dependent Claim
16 words
The method of claim 5 including the step of containing a memory in said protecting means.
Claim 11
Dependent Claim
33 words
A means for protecting information containing at least one of a central processing unit (CPU) and memory and containing an encrypter, said means being temporarily inserted in a computer or information transfer device.
Claim 12
Dependent Claim
33 words
A means for protecting information containing at least one of a central processing unit (CPU) and memory and containing an encrypter, said means being temporarily inserted in a computer or information transfer device.
Claim 13
Dependent Claim
11 words
The system of claim 7 wherein said means contains a decrypter.
Claim 14
Independent Claim
42 words
A method for protecting information including the steps of: containing at least one of a central processing unit (CPU) and memory and containing an encrypter in a protecting means; and temporarily inserting said protecting means in a computer or information transfer device.
Claim 15
Independent Claim
42 words
A method for protecting information including the steps of: containing at least one of a central processing unit (CPU) and memory and containing an encrypter in a protecting means; and temporarily inserting said protecting means in a computer or information transfer device.
Claim 16
Dependent Claim
16 words
The method of claim 9 including the step of containing a decrypter in said protecting means.
Claim 17
Dependent Claim
25 words
A means for protecting information containing a central processing unit (CPU) and encrypter, said means being temporarily inserted in a computer or information transfer device.
Claim 18
Dependent Claim
25 words
A means for protecting information containing a central processing unit (CPU) and encrypter, said means being temporarily inserted in a computer or information transfer device.
Claim 19
Dependent Claim
17 words
The system of claim 11 wherein said means contains at least one of a memory and decrypter.
Claim 20
Independent Claim
28 words
The system of one of claims 1, 3, 8, 12 including switching means for operating said computer or information transfer device with and without said encrypter and decrypter.
Claim 21
Independent Claim
32 words
The system of one of claims 1, 3, 8, 12 wherein said protecting means includes means for at least one of encrypting and decrypting the key used by said encrypter and decrypter.
Claim 22
Dependent Claim
31 words
The system of claim 14 wherein said means for encrypting and decrypting the key used by said encrypter and decrypter uses a key which is inaccessible from outside said protecting means.
Claim 23
Dependent Claim
42 words
The system of claim 14 wherein said means for encrypting and decrypting the key used by said encrypter and decrypter has as input said key used by said encrypter and decrypter and provides output which is inaccessible from outside said protecting means.
Claim 24
Dependent Claim
44 words
The system of claim 14 wherein said means for encrypting and decrypting the key used by said encrypter and decrypter has an input a key which is inaccessible from outside said protecting means and provides output said key used by said encrypter and decrypter.
Claim 25
Independent Claim
30 words
The system of one of claims 1, 3, 8, 12 wherein said protecting means provides at least one of the physical, mechanical and electromagnetic access to said encrypter and decrypter.
Claim 26
Independent Claim
26 words
The system of one of claims 1, 3, 8, 12 wherein said encrypter and decrypter uses a key which is inaccessible from outside said protecting means.
Claim 27
Independent Claim
26 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means is at least one of a physically, mechanically and electromagnetically secure means.
Claim 28
Independent Claim
27 words
The system of one of claims 1, 3, 7, 11 wherein elements in said protecting means erase their mechanical and electrical contents when mechanically or electrically disconnected.
Claim 29
Independent Claim
19 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means is a monolithic semiconductor chip.
Claim 30
Independent Claim
23 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means includes one of a data, program and coefficient memories.
Claim 31
Independent Claim
24 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means includes at least one of a tamperproof and alarm means.
Claim 32
Independent Claim
18 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means is a vault means.
Claim 33
Independent Claim
18 words
The system of one of claims 1, 3, 7, 11 wherein said computer is a general purpose computer.
Claim 34
Independent Claim
18 words
The system of one of claims 1, 3, 7, 11 wherein said computer is a special purpose computer.
Claim 35
Independent Claim
19 words
The system of one of claims 1, 3, 7, 11 wherein said CPU is an arithmetic logic unit (ALU).
Claim 36
Independent Claim
24 words
The system of one of claims 1, 3, 7, 11 wherein said computer is one of a host computer, a computer-based terminal or peripheral.
Claim 37
Independent Claim
21 words
The system of one of claims 1, 3, 7, 11 wherein said computer is one of a minicomputer, microcomputer, or microprocessor.
Claim 38
Independent Claim
18 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means is a tamperproof means.
Claim 39
Independent Claim
24 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means is permanently embedded in said computer or information transfer device.
Claim 40
Independent Claim
18 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means is a portable means.
Claim 41
Independent Claim
23 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means is one of a credit, identification or information card.
Claim 42
Independent Claim
24 words
The system of one of claims 1, 3, 7, 11 wherein said protecting means is accessible from outside said computer or information transfer device.
Claim 43
Independent Claim
26 words
The system of one of claims 1, 3, 7, 11 wherein said computer or information transfer device is at least one of a transmitter or receiver.
Claim 44
Independent Claim
29 words
The method of one of claims 2, 5, 8, 12 including the step of at least one of enciphering and deciphering the key used by said encrypter and decrypter.
Claim 45
Dependent Claim
37 words
The method of claim 37 including the step of using a key for enciphering and deciphering the key used by said encrypter and decrypter, said key for enciphering and deciphering being inaccessible from outside said protecting means.
Claim 46
Dependent Claim
29 words
The method of claim 37 including the step of using said key by said encrypter and decrypter to provide another key which is inaccessible from outside said protecting means.
Claim 47
Dependent Claim
30 words
The method of claim 37 including the step of using a key which is inaccessible from outside said protecting means to provide said key used by said encrypter and decrypter.
Claim 48
Independent Claim
19 words
The system of one of claims 1, 4, 7, 12 wherein said memory contains information protected by a cipher.
Claim 49
Independent Claim
21 words
The system of one of claims 1, 4, 7, 12 wherein said memory contains a computer program protected by a cipher.
Claim 50
Independent Claim
34 words
A method for protecting information including the steps of: containing a central processing unit (CPU) and encrypter in a protecting means; and temporarily inserting said protecting means in a computer or information transfer device.
Claim 51
Independent Claim
34 words
A method for protecting information including the steps of: containing a central processing unit (CPU) and encrypter in a protecting means; and temporarily inserting said protecting means in a computer or information transfer device.
Claim 52
Dependent Claim
22 words
The method of claim 43 including the step of containing at least one of a memory and decrypter in said protecting means.
Claim 53
Independent Claim
25 words
The method of one of claims 2, 5, 9, 43 including the step of providing one of a physically, electrically and electromagnetically secure protecting means.
Claim 54
Independent Claim
32 words
The method of one of claims 2, 5, 9, 43 including the step of providing elements in said protecting means which erase their mechanical and electrical contents when mechanically or electrically disconnected.
Claim 55
Independent Claim
23 words
The method of one of claims 2, 5, 9, 43 including the step of providing said protecting means as a monolithic semiconductor chip.
Claim 56
Independent Claim
29 words
The method of one of claims 2, 5, 9, 43 including the step of providing at least one of a data, program and coefficient memories in said protecting means.
Claim 57
Independent Claim
28 words
The method of one of claims 2, 5, 9, 43 including the step of providing said protecting means with at least one of a tamperproof and alarm means.
Claim 58
Independent Claim
22 words
The method of one of claims 2, 5, 9, 43 including the step of providing said protecting means as a vault means.
Claim 59
Independent Claim
26 words
The method of one of claims 2, 5, 9, 43 including the step of providing said computer or information transfer device as a general purpose computer.
Claim 60
Independent Claim
26 words
The method of one of claims 2, 5, 9, 43 including the step of providing said computer or information transfer device as a special purpose computer.
Claim 61
Independent Claim
30 words
The method of one of claims 2, 5, 9, 43 including the step of providing said computer or information transfer device as at least one of a transmitter or receiver.
Claim 62
Independent Claim
22 words
The method of one of claims 2, 5, 9, 43 including the step of providing said protecting means as a tamperproof means.
Claim 63
Independent Claim
26 words
The method of one of claims 2, 5, 9, 43 including the step of permanently embedding said protecting means in said computer or information transfer device.
Claim 64
Independent Claim
22 words
The method of one of claims 2, 5, 9, 43 including the step of providing said protecting means as a portable means.
Claim 65
Independent Claim
27 words
The method of one of claims 2, 5, 9, 43 including the step of providing said protecting means as one of a credit, identification or information card.
Claim 66
Independent Claim
27 words
The method of one of claims 2, 5, 9, 43 including the step of providing said protecting means accessible from outside said computer or information transfer device.
Claim 67
Independent Claim
32 words
The method of one of claims 2, 5, 10, 44 including the step of providing switching means for operating said computer or information transfer device with and without said encrypter and decrypter.
Claim 68
Independent Claim
35 words
The method of one of claims 2, 5, 10, 44 including the step of using said protecting means to protect at least one of the physical, mechanical and electromagnetic access to said encrypter and decrypter.
Claim 69
Independent Claim
31 words
The method of one of claims 2, 5, 10, 44 including the step of using a key for said encrypter and decrypter, said key being inaccessible from outside said protecting means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-08 | 1994-10-08 | 1995-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-08 | 1998-10-08 | 1999-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-08 | 2002-10-08 | 2003-04-09 | $7700.00 | Window Closed / Lapsed |