An interface to cache nonce/sequence number values coming with messages.
This mainly helps to prevent replay attacks. There are few different ways to handle replay attacks.
1. Cache nonce values.
2. Use a sequence number.
"Web Services Security UsernameToken Profile 1.1 OASIS Standard Specification, 1 February 2006" specification only recommends
to cache nonce for a period. But there can be other mechanisms like using sequence number.
Therefore cache is implemented as an interface and later if we need to support sequence number scenario we can easily extend this.
Date: Apr 30, 2010
Time: 12:15:52 PM
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