checked couple of online options which says 3DES is symmetric encryption(which means a single key is shared between two to encryption and decryption)
but I have seen many EDI production system(AS2 setups) which uses 3DES encryption though we use the public key of the receiver to encrypt (asymmetric encryption - public key and private key pair). How 3DES is used for these set ups ? or there is some misnomer with the term "symmetric" in 3DES?