	US 7,587,051 B2
	System and method for securing information, including a system and method for setting up a correspondent pairing
Denis Bisson, 2335, 28th Avenue, Drummondville, Quebec J2B 8J4 (Canada); Patrick Larouche, 1100 Marchant, # 25, Drummondville, Quebec J2C 7S5 (Canada); Martin Roy, 4876 Fugère Street, Drummondville, Quebec J2E 1V1 (Canada); Marie-Claude Gagnon, 4876 Fugère Street, Drummondville, Quebec J2E 1V1 (Canada); and Gérald Duhamel, 290 St-Damase Street, Drummondville, Quebec J2B 6J5 (Canada)
Filed on Jan. 13, 2004, as Appl. No. 10/755,668.
Claims priority of provisional application 60/439493, filed on Jan. 13, 2003.
Prior Publication US 2004/0165729 A1, Aug. 26, 2004
Int. Cl. H04L 9/00 (2006.01)

U.S. Cl. 380—281 [713/168]

10 Claims

1. An information processing method comprising:

generating a first key in a First Information Processing System (FIPS);

encrypting sensitive data using the generated first key, thereby generating temporary secured sensitive data;

selecting a correspondent to whom the sensitive data is destined;

transmitting the first key and correspondent selection data from the FIPS to a Second Information Process System (SIPS) which is arranged separate from the FIPS;

identifying among SIPS stored key identifiers and keys a correspondent key identifier and a correspondent key based on received correspondent selection data from the FIPS;

encrypting the first key using the identified correspondent key, thereby generating a secured first key in said SIPS;

encrypting the identified correspondent key identifier using a SIPS stored public key, thereby generating a secured key identifier in said SIPS;

transmitting the secured first key and the secured key identifier from the SIPS to the FIPS; and

integrating into integrated secured sensitive data the temporarily secured data, the secured first key, and the key identifier,

wherein said correspondent key is established with a system operated by the correspondent prior to performing said information processing method without having communicated said identified correspondent key outside said SIPS.