> > It seems the EVP_PKEY_RSA_PSS addition was only committed 28th > > October 2019, so need to wait for 1.1.1e, hopefully real soon... > > Ah, that explains it! Now tested with 1.1.1e-dev and I can generate a JWK from an RSA-PSS key. Since JWK is for signing, I also tried to support ED25519 private keys, but get: error:0D0A40A7:asn1 encoding routines:i2d_PublicKey:unsupported public key type A binary public key is all I need for JWK, simple format. A search of master suggests nothing yet. Angus