Patent ID: 7587051

Claim:
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.