The patch attached above is an explanation (not an executible):
1. Use IDA (dis-assembler) to open & dis-assemble the Mentor FlexLM daemon (or other executible)
2. Use the detailed explanation to trace the '_l_pubkey_verify' routine
3. Define an identifying string to locate where to patch (also described in details)
4. Serach the string in the entire Mentor install directory - using SFK tool 'search' command
5. This wil give you all the files in Mentor install directory which must be patched
6. Patch manually all files (with some HEX editor), or use SFK tool to 'search & replace'
7. Done.