US5818937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone tone security device
Assignee: NCR Voyix Corp
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Filing: 1996-08-12
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Granted: 1998-10-06
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Expires: 2016-08-12
Abstract
Abstract An encryption device. A user wishes to identify himself to a remote party, over a telephone line. The remote party provides a Transaction Number, TN, to the user. The TN is given to the encryption device. The user gives the encryption device a Personal Identification Number, PIN. The encryption device generates a random number, combines it with the PIN and TN, to form an Authorization Number, AN, and encrypts the AN into cypher text. The cypher text is transmitted to the remote party, together with the user's name. The remote party de-crypts the cypher text, to obtain the TN and PIN. Using the name received from the user, and a table of names, and their associated PINs, the remote party verifies whether the PIN obtained from the AN matches the PIN assigned to the name given by the user. If so, the user's identity is considered verified, but without requirement that the user disclose a PIN, in plain text form, over a telephone.
Inventors
- 👤 Gary E. Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:12
CPC Classifications
G; G06; G06Q; G06Q20/00; G06Q20/08; G06Q20/10; G06Q20/108; G06Q20/38; G06Q20/40; G06Q20/401; G06Q20/4012; H; H04; H04L; H04L9/00; H04L9/32; H04L9/3226; H04L2209/00; H04L2209/56
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
49 words
An encryption device, comprising: a) storage means containing a first, public, key; b) means for accepting a personal identification number (PIN) from a user; c) means for encrypting the PIN, using the first key; and d) means for transmitting the encrypted PIN to a receiver, located outside the device.
Claim 2
Dependent Claim
49 words
An encryption device, comprising: a) storage means containing a first, public, key; b) means for accepting a personal identification number (PIN) from a user; c) means for encrypting the PIN, using the first key; and d) means for transmitting the encrypted PIN to a receiver, located outside the device.
Claim 3
Dependent Claim
17 words
Device according to claim 1, and further comprising means for loading additional keys into the storage means.
Claim 4
Dependent Claim
16 words
Device according to claim 2, in which said means for loading comprises a bar code reader.
Claim 5
Dependent Claim
15 words
Device according to claim 1, in which said means for transmitting uses Dual-Tone Multi-Frequency signals.
Claim 6
Dependent Claim
15 words
Device according to claim 1, in which said means for transmitting comprises a telephone modem.
Claim 7
Dependent Claim
21 words
Device according to claim 1, and further comprising: e) means for receiving a transaction number from a remote party, by telephone.
Claim 8
Dependent Claim
15 words
Device according to claim 6, in which the means for encrypting encrypts the transaction number.
Claim 9
Dependent Claim
18 words
Device according to claim 1, and further comprising: e) display means for displaying information entered by the user.
Claim 10
Independent Claim
65 words
A method of verifying identity of a person, comprising the following steps: a) receiving cyphertext and a name from the person; b) deriving a derived PIN from the cypher text; c) maintaining a table which indicates PINs which are assigned to respective names; d) ascertaining an assigned PIN which is associated with said name; and e) determining whether the derived PIN matches the assigned PIN.
Claim 11
Independent Claim
65 words
A method of verifying identity of a person, comprising the following steps: a) receiving cyphertext and a name from the person; b) deriving a derived PIN from the cypher text; c) maintaining a table which indicates PINs which are assigned to respective names; d) ascertaining an assigned PIN which is associated with said name; and e) determining whether the derived PIN matches the assigned PIN.
Claim 12
Dependent Claim
69 words
In a transaction wherein a remote party makes contact with a person who wishes to verify identity of said remote party, the improvement comprising the following steps: a) after said contact is made, making available multiple publicly available keys to the remote party; b) accepting information from the remote party which selects a public key from the multiple keys; and c) transmitting the selected key to the remote party.
Claim 13
Dependent Claim
69 words
In a transaction wherein a remote party makes contact with a person who wishes to verify identity of said remote party, the improvement comprising the following steps: a) after said contact is made, making available multiple publicly available keys to the remote party; b) accepting information from the remote party which selects a public key from the multiple keys; and c) transmitting the selected key to the remote party.
Claim 14
Dependent Claim
67 words
An encryption apparatus, comprising: a) first means for accepting a Transaction Number, TN, and a Personal Identification Number, PIN, from a user; b) second means for i) generating a random number; ii) combining the random number with the TN and PIN, to form an Authorization Number, AN; iii) encrypting the AN into cyphertext; and c) third means, for making the cypher text available outside the encryption apparatus.
Claim 15
Dependent Claim
67 words
An encryption apparatus, comprising: a) first means for accepting a Transaction Number, TN, and a Personal Identification Number, PIN, from a user; b) second means for i) generating a random number; ii) combining the random number with the TN and PIN, to form an Authorization Number, AN; iii) encrypting the AN into cyphertext; and c) third means, for making the cypher text available outside the encryption apparatus.
Claim 16
Dependent Claim
18 words
Apparatus according to claim 11, in which the first means comprises: i) a keypad for accepting the PIN.
Claim 17
Dependent Claim
21 words
Apparatus according to claim 11, in which the first means further comprises: ii) means for accepting the TN from a telephone.
Claim 18
Dependent Claim
14 words
Apparatus according to claim 11, in which the third means comprises a visual display.
Claim 19
Dependent Claim
18 words
Apparatus according to claim 11, in which the third means comprises means for transmitting the cyphertext by telephone.
Claim 20
Independent Claim
67 words
A device for connection to a telephone which communicates on a telephone line, comprising: a) first means for accepting numbers from a keypad, which are keyed in by a user; b) second means for encrypting said numbers into cyphertext; c) third means for transmitting said cyphertext on said telephone line and d) connection means for connecting to said telephone line, while allowing normal operation of said telephone.
Claim 21
Independent Claim
67 words
A device for connection to a telephone which communicates on a telephone line, comprising: a) first means for accepting numbers from a keypad, which are keyed in by a user; b) second means for encrypting said numbers into cyphertext; c) third means for transmitting said cyphertext on said telephone line and d) connection means for connecting to said telephone line, while allowing normal operation of said telephone.
Claim 22
Dependent Claim
35 words
Device according to claim 16, and further comprising d) means for generating multiple random numbers which are used as padding with said numbers, and in which the second means encrypts both the numbers and padding.
Claim 23
Dependent Claim
17 words
Device according to claim 16, and further comprising: a) a public encryption key, stored within the device.
Claim 24
Dependent Claim
15 words
Device according to claim 16, in which no secret passwords or keys are permanently stored.
Claim 25
Dependent Claim
18 words
Device according to claim 16, in which all passwords and all keys permanently stored therein are publicly available.
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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) | 2001-10-05 | 2002-04-06 | 2002-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-05 | 2006-04-06 | 2006-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-05 | 2010-04-06 | 2010-10-06 | $7700.00 | Window Closed / Lapsed |