Sorry, I'm still not quite getting it. It sounds like you're saying that only RSA supports encrypting with a public key. But can't any asymmetric encryption algorithm encrypt using the public key? Why is RSA special in this regard? Norm Green On 8/15/2016 5:31 PM, Dr. Stephen Henson wrote: > On Mon, Aug 15, 2016, Norm Green wrote: > >> Ok, thanks. >> >> What I don't understand is what key transport has to do with >> EV_SealInit() ? Why is key transport important here ? >> > Because EVP_SealInit() generates a random symmetric key and encrypts it using > one or more public keys. For this to work the public key algorithm has to > support encryption of the symmetric key using a public key aka key transport. > > Of the public key algorithms OpenSSL currently implements only RSA has that > operation. > > Steve. > -- > Dr Stephen N. Henson. OpenSSL project core developer. > Commercial tech support now available see: http://www.openssl.org
