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Lowe modified BAN concrete Andrew Secure RPC

Author(s): Gavin Lowe (1996)

Summary: A modified version of the BAN concrete Andrew Secure RPC protocol, preventing a parallel session attack. Exchanged of a fresh shared key, Symmetric key cryptography.

Protocol specification (in common syntax)

`A, B` :	`principal`
`Kab, K'ab` :	`symkey`
`Na, Nb, N'b` :	`nonce`
`succ` :	`nonce -> nonce`

`1`.	`A`	`->`	`B`	:	`A, Na`
`2`.	`B`	`->`	`A`	:	{`Na, K'ab, B`}`Kab`
`3`.	`A`	`->`	`B`	:	{`Na`}`K'ab`
`4`.	`B`	`->`	`A`	:	`Nb`

Description of the protocol rules

The identity of the responder B has been added in the message 2 of andrewBAN2.

Requirements

See Andrew Secure RPC.

References

[Low96]

Citations

[Low96]: Gavin Lowe. Some new attacks upon security protocols. In IEEE Computer Society Press, editor, In Proceedings of the Computer Security Foundations Workshop VIII, 1996.

last modified 14/11/2002.

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