There is example code for doing RSA PSS with OpenSSL at https://www.idrix.fr/Root/Samples/openssl_pss_signature.c
On Tue, May 12, 2020 at 11:59 AM John McCabe <j...@mccabe.org.uk> wrote: > Hi, > I've searched around, but found nothing that appears to help. > > I'm developing some software where I may be given a file that's been > created (signed) by using the Crypto++ library's implementation of RSA > PSS-R, with a SHA1 hash. As I understand it, the complete file contents > then effectively becomes the signature, and the receiving end needs to > recover the original file contents and verify its signature. > > Is the receiving end something I can do with OpenSSL? I have a need to use > OpenSSL features in the software I'm developing so, if possible, I'd rather > avoid having to include Crypto++ in it! > > Any pointers would be gratefully appreciated. For what it's worth, this is > something I'm fairly new to so, if what I'm asking isn't clear, or if it > sounds like I have some concepts wrong, please let me know.... gently ;-) > > Many thanks > John >
