> There isn't a key specific format for Ed25519. > You need to use i2d_PUBKEY() for that.
I used EVP_PKEY_get_raw_public_key which got added for these raw keys, works fine for Ed25519. On the EVP_PKEY_get_raw_public_key.html page, it would help if it mentioned that *len should be set to the passed buffer size on the get_raw functions which fail if you pass zero. Angus
