Crypt::License Read INSTALL for information about missing module Crypt::LockTite This module set provides tools to effectively obfuscate perl source code and allow it to be decoded and executed based on host server, user, expiration date and other parameters. Further, decoding and execution can be set for a system wide key as well as a unique user key. In addition, there are a set of utilities that provide email notification of License expiration and indirect use of the encrypted modules by other standard modules that may reside on the system. i.e. sub-process calls by Apache-AuthCookie while not in user space. Tools and Makefile.PL additions are included to allow the creation of encrypted distribution "binaries" with commands make crypt make cryptdist Basic operation: Encryption uses a modified RC4 algorithim to convert the text perl file into a "binary" consisting of bits -- this is a non-text file. When perl attempts to load the module if first encounters "use Crypt::License;" at the beginning of the file which in turn decrypts the stream of "bits" and delivers it directly to the perl interpreter. Details in the POD