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License4J
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Version
1.2
License4J is a pure Java library for creating and
validating licenses. The key concept is features of a
license. You can easily add any feature to your license
file, i.e. name of the product, version, expiry date,
number of executable instances, customer's name,
company, IP address, etc. The feature's value can be
string or any serializable Java object. You can have
unsigned features - features that are not used in the
signature generation/verification and therefore can
change their values leaving the license valid. Also the
library provides methods for signing arbitrary content
that should not be changed by the user.
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