STUART W HABER, M.D.
Osteopathic Medicine at Sheridan Sq, New York, NY

5373561, Dec 13, 1994

Dec 21, 1992

7/992883

Stuart A. Haber - New York NY
Wakefield S. Stornetta - Morristown NJ

Bell Communications Research, Inc. - Livingston NJ

H04L 900, H04L 930

380 49

A cryptographic certificate attesting to the authenticity of original document elements, such as time of creation, content, or source, will lose its value when the cryptographic function underlying the certifying scheme is compromised. The present invention provides a means for extending the reliability of such a certificate by subjecting, prior to any such compromise, a combination of the original certificate and the document digital representation from which that certificate was derived to a scheme based on a different and ostensibly less vulnerable function. The new certificate resulting from this procedure extends the validity of the original authenticity by implacably incorporating the original certificate at a time when that certificate could only have been derived by legitimate means.

5136647, Aug 4, 1992

Aug 2, 1990

7/561888

Stuart A. Haber - New York NY
Wakefield S. Stornetta - Morristown NJ

Bell Communications Research, Inc. - Livingston NJ

H04L 900, H04L 930

380 49

A system for time-stamping a digital document, including for example text, video, audio, or pictorial data, protects the secrecy of the document text and provides a tamper-proof time seal establishing an author's claim to the temporal existence of the document. Initially, the author reduces the document to a number by means of a one-way hash function, thereby fixing a unique representation of the document text. In one embodiment of the invention the number is then transmitted to an outside agency where the current time is added to form a receipt which is certified by the agency using a public key signature procedure before being returned to the author as evidence of the document's existence. In later proof of such existence, the certificate is authenticated by means of the agency's public key to reveal the receipt which comprises the hash of the alleged document along with the time seal that only the agency could have signed into the certificate. The alleged document is then hashed with the same one-way function and the original and newly-generated hash numbers are compared.

RE34954, May 30, 1995

Nov 22, 1993

8/156120

Stuart A. Haber - New York NY
Wakefield S. Stornetta - Morristown NJ

Bell Communications Research, Inc. - Livingston NJ

H04L 900, H04L 930

380 49

A system for time-stamping a digital document, including for example text, video, audio, or pictorial data, protects the secrecy of the document text and provides a tamper-proof time seal establishing an author's claim to the temporal existence of the document. Initially, the author reduces the document to a number by means of a one-way hash function, thereby fitting a unique representation of the document text. In one embodiment of the invention the number is then transmitted to an outside agency where the current time is added to form a receipt which is certified by the agency using a public key signature procedure before being returned to the author as evidence of the document's existence. In later proof of such existence, the certificate is authenticated by means of the agency's public key to reveal the receipt which comprises the hash of the alleged document along with the time seal that only the agency could have signed into the certificate. The alleged document is then hashed with the same one-way function and the original and newly-generated hash numbers are compared.

5136646, Aug 4, 1992

Mar 8, 1991

7/666896

Stuart A. Haber - New York NY
Wakefield S. Stornetta - Morristown NJ

Bell Communications Research, Inc. - Livingston NJ

H04L 900, H04L 930

380 49

A system for time-stamping a digital document, for example any alphanumeric, video, audio, or pictorial data, protects the secrecy of the document text and provides a tamper-proof time seal establishing an author's claim to the temporal existence of the document. Initially, the document may be condensed to a single number by means of a one-way hash function, thereby fixing a unique representation of the document text. The document representation is transmitted to an outside agency where the current time is added to form a receipt. The agency then certifies the receipt by adding and hashing the receipt data with the current record catenate certificate which itself is a number obtained as a result of the sequential hashing of each prior receipt with the extant catenate certificate. The certified receipt bearing the time data and the catenate certificate number is then returned to the author as evidence of the document's existence. In later proof of such existence, the certificate is authenticated by repeating the certification steps with the representation of the alleged document, the alleged time data, and the catenate certificate number appearing in the agency's records immediately prior to the certificate number in question.

5781629, Jul 14, 1998

Feb 21, 1997

8/803326

Stuart A. Haber - New York NY
W. Scott Stornetta - Morriston, Jr. NJ

Surety Technologies, Inc. - Florham Park NJ

H04L 932

380 23

A process for time-stamping a digital document is provided. The process provides a certificate which not only allows for the authentication of a document at a later time but which includes a name or nickname which allows for the unique identification of the document at a later time. The name or nickname provided in accordance with the present invention is not only simple and concise but allows for the self-authentication of the document which it refers to. The name can be used when two independent parties desire to refer to the same unique document in a quick and simple way.

2008010, May 1, 2008

Oct 31, 2006

11/555278

William Horne - Lawrenceville NJ, US
Stuart Haber - New York NY, US
Tomas Sander - New York NY, US

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. - Houston TX

H04L 9/00

713178

A method of establishing the integrity of an audit record set is described. The method comprises receiving a set of audit records and generating a first set of random values wherein each audit record in the set corresponds to at least one value of the first set. The method further comprises generating a second set of values based on an audit record and a corresponding value of the first set for each audit record in the set and generating a summary value based on the second set of values. The method further comprises certifying the summary value to generate an integrity certificate enabling verification of the integrity of the audit record set and storing the audit record set and at least one of the first set of values and the generated digital signature.

8220036, Jul 10, 2012

Dec 12, 2006

11/609822

Binyamin Pinkas - Jersey City NJ, US
Stuart A. Haber - New York NY, US
Robert E. Tarjan - Princeton NJ, US
Tomas Sander - New York NY, US

Intertrust Technologies Corp. - Sunnyvale CA

H04L 29/06

726 7, 726 5

A method of establishing a secure channel between a human user and a computer application is described. A secret unique identifier (“PIN”) is shared between a user and an application. When the user makes a request that involves utilizing the PIN for authentication purposes, the application renders a randomly selected identifier. The randomly selected identifier is in a format that is recognizable to a human but is not readily recognizable by an automated agent. The randomly selected identifier is then presented to the human user. The user identifies the relationship between the randomly selected identifier and the PIN. If the user's input reflects the fact that the user knows the PIN, then the user is authenticated.

8266439, Sep 11, 2012

Sep 12, 2007

11/854413

Stuart Haber - New York NY, US
William G. Horne - Lawrenceville NJ, US
Tomas Sander - New York NY, US
Danfeng Yao - West Lafayette IN, US

Hewlett-Packard Development Company, L.P. - Houston TX

H04L 9/32, H04L 29/06

713176, 713150, 713168, 713175, 713177

One or more methods of generating a pseudonymizable document are described. A method comprises receiving a set of subdocuments and generating a first set of random values wherein each subdocument in the document corresponds to a first set random value. A second set of values is generated based on a subdocument and a corresponding value of the first set random value. A set of pseudonyms is generated wherein each subdocument in the document corresponds to at least one pseudonym of the pseudonym set. A third set of values is generated based on the second set of values and the pseudonym set and a summary value is generated based on the third set of values.

7149899, Dec 12, 2006

Apr 25, 2003

10/423546

Binyamin Pinkas - Jersey City NJ, US
Stuart A. Haber - New York NY, US
Robert E. Tarjan - Princeton NJ, US
Tomas Sander - New York NY, US

Intertrust Technologies Corp. - Sunnyvale CA

G06F 9/00

713182, 713181, 713193

A method of establishing a secure channel between a human user and a computer application is described. A secret unique identifier (“PIN”) is shared between a user and an application. When the user makes a request that involves utilizing the PIN for authentication purposes, the application renders a randomly selected identifier. The randomly selected identifier is in a format that is recognizable to a human but is not readily recognizable by an automated agent. The randomly selected identifier is then presented to the human user. The user identifies the relationship between the randomly selected identifier and the PIN. If the user's input reflects the fact that the user knows the PIN, then the user is authenticated.