[Linux-ima-user] Signature scheme

[Benjamin H. <he...@dc...>]

Hi,

could someone please briefly explain to the non-experts regarding 
openssl api what kind of signature is used by IMA/EVM in the two 
sign_hash functions as it can be found in 
https://sourceforge.net/p/linux-ima/ima-evm-utils/ci/master/tree/src/libimaevm.c. 
What scheme and maybe what kind of encoding is used? I am looking for 
doing the signature with external tooling and thus have to find out if 
this could work. Or the other way around, what kind of signature can be 
used with IMA/EVM from kernel point of view?

Best regards
Benjamin