Encryption method and apparatus with escrow guarantees

Details Encryption method and apparatus with escrow guarantees Encryption method and apparatus with escrow guarantees

2006-04-25

2006-04-25

Morse, Gregory (Department: 2134)

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

Reexamination Certificate

active

07035403

ABSTRACT:
A message to be transmitted through a network is encrypted such that the resulting encrypted message has associated therewith a proof of correctness indicating that the message is of a type that allows decryption by one or more escrow authorities. Each of at least a subset of the servers of the network includes a module for checking the proof of correctness if the corresponding encrypted message passes through the corresponding server in being transmitted from a sender to a recipient through the network. The encrypted message is therefore transmitted through the network to the recipient such that in traversing the network the proof of correctness associated with the encrypted message is checked by a designated check module of at least one server of the network. If the check of the proof of correctness indicates that the proof is invalid, the module of the server performing the check may direct that the encrypted message be discarded.

REFERENCES:
patent: 5867578 (1999-02-01), Brickell et al.
U.S. Appl. No. 09/315,628, filed May 20, 1999, B. M. Jakobsson.
A. Young et al., “Towards Signature-Only Signature Schemes,” Advances in Cryptology-ASIACRYPT 2000, pp. 97-115, Dec. 2000.
A. Young et al., “Auto-Recoverable Auto-Certifiable Cryptosystems,” Advances in Cryptology-EUROCRYPT '98, pp. 1-31, Jun. 1998.

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