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Title
Providing a License File that Allows Checkouts from Both Old and New Clients

Summary

Providing a License File that Allows Checkouts from Both Old and New Clients

Question

How do you provide a license file to a customer that will allow them to checkout both from older clients using License Keys, as well as newer clients using CRO or TRL?

Answer

Implement SIGN and SIGN2 in a FEATURE/INCREMENT line.
To implement SIGN and SIGN2 in a FEATURE/INCREMENT line, you need both ENCRYPTION_SEED values and TRL keys in your lm_code.h file. If LM_STRENGTH is set to LM_STRENGTH_DEFAULT, lmcrypt (or the VCG) will only crypt signature keys (SIGN=XXXXXXXXXX). If LM_STRENGTH is set to 113BIT, 163BIT, or 239BIT, each FEATURE/INCREMENT line will crypt to SIGN=(encryption strength) SIGN2=(license key), allowing both older applications to continue to checkout licenses from this FEATURE/INCREMENT as well as newer ones.

Additional Information

Please Note that If LM_STRENGTH is set to LM_STRENGTH_DEFAULT in older clients then older clients will not be able to checkout from new License. In Older Client LM_STRENGTH must be set to LICENSE_KEY or CRO in order for older client to checkout from new license.
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Providing a License File that Allows Checkouts from Both Old and New Clients