Method for incremental authentication of documents

Details Method for incremental authentication of documents Method for incremental authentication of documents

2008-01-01

2008-01-01

Vital, Pierre (Department: 2169)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C713S176000

Reexamination Certificate

active

10957414

ABSTRACT:
A method of protecting an electronic document, the method comprising dividing an original document into data blocks; generating a corresponding hash value for each data block; generating a corresponding hash value for a group of data blocks (GOB); generating a hash tree structure based on the corresponding hash values for the data blocks and for the GOB; calculating a hash value of a root node of the hash tree structure, the root node having no parent in the hash tree structure; signing the hash value of the root node; and generating auxiliary authentication data; wherein said auxiliary authentication data enables authentication of portions of the electronic document based on a reconstruction of the hash tree structure.

REFERENCES:
patent: 5781629 (1998-07-01), Haber et al.
patent: 5898779 (1999-04-01), Squilla et al.
patent: 5912974 (1999-06-01), Holloway et al.
patent: 6111953 (2000-08-01), Walker et al.
patent: 6834329 (2004-12-01), Sasaki et al.
patent: 6959384 (2005-10-01), Serret-Avila
patent: 7080041 (2006-07-01), Nagel
Gennaro, Rosario et al., “Robust and Efficient Sharing of RSA Functions,” 2000, Journal of Cryptology, pp. 273-300.

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