Hello,

I am working on a project to allow uboot to authenticate users by using the 
same sha256_crypt function that Linux user-space use for libcrypt
[ref] http://www.akkadia.org/drepper/SHA-crypt.txt

We chose sha256 because uboot already have support for doing sha256 hashes, I 
am wondering about a few things:
1. Has this been attempted before?

2. If I want to make a test command for a proof of concept using crypt(), how 
do I modify the Makefile to allow a
   command to statically link to libcrypt? hacking it into the Makefile's 
$(PLATFORM_LIBS)?

3. Once I am done porting sha256_crypt to use it using the facilities uboot 
has, is there any hope of getting this mainlined when I am done?
   If there is a policy to not unnecessarily add crypto algorithm, then I'll 
just keep it all in one file to reduce risk of merge conflict.
   If there is interest to mainline this, then I'll stage the supporting 
functions that uboot does not have yet (mempcpy, stpcpy, etc) into
   separate files.

Thank you for everyone's time
--
Richard Retanubun
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