초록 ▼

Secure electronic transactions using a Trusted Intermediary. A system for, and method of, securely transmitting a package from a sender to a recipient, via an intermediary, are described, along with a novel data arrangement, stored in a computer-readable medium. A sender encrypts the message to form

Secure electronic transactions using a Trusted Intermediary. A system for, and method of, securely transmitting a package from a sender to a recipient, via an intermediary, are described, along with a novel data arrangement, stored in a computer-readable medium. A sender encrypts the message to form an encrypted inner envelope. A waybill is formed that among other things identifies the recipient as the destination and includes information indicating various levels of services desired, e.g., electronic notarization. The waybill and inner envelope are used to form an encrypted outer envelope that is addressed to a trusted intermediary. The intermediary receives the package and decrypts the outer envelope. It is unable to decrypt the inner envelope, due to the keys employed during encryption. The service information is processed, and the package is used to form a second package addressed to the recipient. The recipient decrypts the package and confirms receipt thereof, using a digest of the message. In this way, receipt of the message cannot be properly repudiated by the recipient. An extra level of encryption to form an outer envelope from the intermediary to the recipient may be included, and the various envelopes and confirmation digests may be signed so that the contents and identities may be authenticated.

대표청구항 ▼

[ We claim:] [1.] A system for use with a communication network to securely transmit a message thereover from a sender to a recipient, comprising:a transmitter havingfirst logic to receive the message from a user and to form an encrypted inner envelope using a first cryptographic algorithm, the encr

[ We claim:] [1.] A system for use with a communication network to securely transmit a message thereover from a sender to a recipient, comprising:a transmitter havingfirst logic to receive the message from a user and to form an encrypted inner envelope using a first cryptographic algorithm, the encrypted inner envelope containing the message in an encrypted form decryptable by the recipient;second logic to form a first information structure associated with the inner envelope, the first information structure containing data identifying the recipient as a destination;third logic to form an encrypted first information structure using a second cryptographic algorithm, the encrypted first information structure, containing the first information structure in an encrypted form decryptable by the intermediary, wherein the second cryptographic algorithm is different than the first cryptographic algorithm;fourth logic to receive the encrypted inner envelope and encrypted first information structure and to transmit them as a first package on the communication network;an intermediary havingfifth logic to receive the first package and to decrypt the encrypted first information structure, using the second cryptographic algorithm, to determine the identifying data;sixth logic to form a second package, the second package containing the encrypted inner envelope;seventh logic to inform the recipient of the second package;a receiver havingeighth logic to obtain the second package; andninth logic to decrypt the inner envelope, using the first cryptographic algorithm, to recover the message.