On 8/13/20 3:03 PM, Thomas Dwyer III wrote: > I think you want "openssl ciphers" rather than "openssl enc -ciphers". Per the "enc" man page: > > The enc program does not support authenticated encryption modes like > CCM and GCM, and will not support such modes in the future. > > chacha20-poly1305 is an authenticated cipher. OpenSSL supports it but the enc command line utility does not. got it. thx!