anchor.diff:                   {group, rsa},
                    {group, dss},
                    {group, ecdsa},
  +                 {group, no_ed25519},
  +                 {group, no_ed448},
                    {group, dh},
                    {group, ecdh},
                    {group, no_srp},
  
positive.code: sign_verify(Config) when is_list(Config) ->
      SignVerify = proplists:get_value(sign_verify, Config),
      lists:foreach(fun do_sign_verify/1, SignVerify).
  
  %%-------------------------------------------------------------------- 
  public_encrypt() ->
  
negative.code:      {chacha20, [], [stream]},
       {poly1305, [], [poly1305]},
       {aes_cbc, [], [block]},
       {no_aes_cfb8,[], [no_support, no_block]},
       {no_aes_cfb128,[], [no_support, no_block]},
       {no_md4, [], [no_support, no_hash]},
       {no_md5, [], [no_support, no_hash, no_hmac]},
       {no_ed25519, [], [no_support, no_sign_verify
                  %% Does not work yet:  ,public_encrypt, private_encrypt
                   ]},
       {no_ed448, [], [no_support, no_sign_verify
                  %% Does not work yet:  ,public_encrypt, private_encrypt
                   ]},
       {no_ripemd160, [], [no_support, no_hash]},
       {no_srp, [], [no_support, no_generate_compute]},
       {no_des_cbc, [], [no_support, no_block]},
  