AnsweredAssumed Answered

Signature Verification and Authentication using RSA and SHA256

Question asked by Ranjith Hebbar V S on Oct 25, 2017
Latest reply on Oct 30, 2017 by Yuri Muhin

Hi all,

 

      I am currently working on i.MX6UL custom board. Currently working on Kernel image verification and secure image verification without HAB API's in u-boot. I looked into u-boot source code and exploring that then found that rsa-verify.c and sha256.c.

 

     In rsa-verify.c there are functions like rsa_verify, rsa_verify_key, rsa_verify_with_keynode which dependent on many files like cmd/fdt.c, common/image-sig.c and cmd/fdt.c many functions and device tree structures. I wnated to know anyone using this for verification also Any one have simplied file which does rsa_verify.?

    In sha256.c, I need hashing of given message uisng sha256 in u-boot Any one have simplied file which does sha256 hashing?

 

     I need to use this for kernel image verification and secure image verification in u-boot using rsa 2048 PKCSv1.5 and SHA256 hashing.

 

Thanks in advance,

Ranjith Hebbar  V S

Outcomes