And, I'm back again with another brand-new package looking for a development project to call home. This one is also from IBM, also specific to s390x. The name is libzpc, and this is the marketing speak they have in their github repo: The IBM Z Protected-key Crypto library libzpc provides interfaces for cryptographic primitives. The underlying implementations make use of z/Architecture's extensive performance-boosting hardware support and its protected-key feature which ensures that key material is never present in main memory at any time. It could go in hardware, but since it's security related, perhaps security would be the better devel project location. Does anyone have any strong opinions either way, or a different suggestion? Thanks again, Mark Post