How to integrate libtomcrypt into u-boot?

Hi there,

for a research project I need to incorporate different crypto functions (PRNG, SHA1, symmetric encryption/decryption) into the MLO part of u-boot.

My questions:

1.) Has someone achieved this before?

2.) Do you guys know it this is even possible regarding the limited size of the MLO and the size of libtomcrypt?

3.) Does someone know an elegant way of resolving missing *.h file-errors besides the straight forward way of copying them fomr /usr/include/ to {u-boot-src}/include/ ?

Thanks a lot