Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2011-08-09
2011-08-09
LaForgia, Christian (Department: 2439)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C726S008000, C726S009000, C726S010000
Reexamination Certificate
active
07996675
ABSTRACT:
A modified Host Identity Protocol, HIP, base exchange method is provided for use by first and second HIP hosts (Initiator and Responder) having a shared state from a pre-existing relationship. In the modified HIP base exchange method, an authentication message (I2′) is sent (S2) from the first host (Initiator) to the second host (Responder) comprising an identifier (HITI) of the first host (Initiator) and a cryptographic item (PF). The authentication message (I2′) is received (S3) at the second host (Responder). Following receipt, the identifier and information relating to the shared state are used (S4) to authenticate the cryptographic item (PF). If the cryptographic item, and the rest of the authentication message, is authenticated, a confirmation message (R2′) is sent from the second host (Responder) to the first host (Initiator) to indicate successful authentication. These two messages (I2′and R2′) are equivalent to the I2and R2messages of the standard HIP base exchange protocol, and the requirement for the I1and R1messages from the standard HIP base exchange protocol is eliminated.
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LaForgia Christian
Telefonaktiebolaget LM Ericsson (publ)
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