slm4j (Starschema License Manager for Java) is a simple and easy-to-use license file generator and validator package for Java programs. It includes a command line tool for generating private and public keys for cryptographic signing, and a runtime class (or jar module) to validate the generated keys. The signed data is an ASCII armored file, which could store date or time limitations, functionality restrictions, or any user specified strings. The embedded license file validation ensures that file is not modified by using the DSA algorithm.
