at the product description of mendelson AS2 some encryption algorithms are listed with RSAES_OAEP and hash algorithms with RSASSA-PSS. I have installed mendelson opensource AS2 1.1 b51, but I find it anywhere. Where or how can I set it?
that has been implemented in 06/2017 into the commercial version. Because we fork the community version about once a year from the commercial version and the b51 is from 01/2017 this is not yet available in the community edition. Means you could either wait for the next community edition (beginning of 2018) or license the commercial version for this feature.