TresorALU

Public domain 64-bit TEA encryption wrapping ordinary 32-bit integer arithmetic done in an Intel CPU without any use of RAM.

This modifies the ideas and source from the open source TRESOR crypto module. That provides the basic infrastructure, particularly permanent key management and storage in the Intel debug registers, and communication to user space via the kernel's own crypto infrastructure and /dev/crypto from the open source cryptodev Linux kernel module project.