@c gnutls_group_t @table @code @item GNUTLS_@-GROUP_@-INVALID Indicates unknown/invalid group @item GNUTLS_@-GROUP_@-SECP192R1 the SECP192R1 curve group (legacy, only for TLS 1.2 compatibility) @item GNUTLS_@-GROUP_@-SECP224R1 the SECP224R1 curve group (legacy, only for TLS 1.2 compatibility) @item GNUTLS_@-GROUP_@-SECP256R1 the SECP256R1 curve group @item GNUTLS_@-GROUP_@-SECP384R1 the SECP384R1 curve group @item GNUTLS_@-GROUP_@-SECP521R1 the SECP521R1 curve group @item GNUTLS_@-GROUP_@-X25519 the X25519 curve group @item GNUTLS_@-GROUP_@-X448 the X448 curve group @item GNUTLS_@-GROUP_@-GC256A the GOST R 34.10 TC26 256 A curve group @item GNUTLS_@-GROUP_@-GC256B the GOST R 34.10 TC26 256 B curve group @item GNUTLS_@-GROUP_@-GC256C the GOST R 34.10 TC26 256 C curve group @item GNUTLS_@-GROUP_@-GC256D the GOST R 34.10 TC26 256 D curve group @item GNUTLS_@-GROUP_@-GC512A the GOST R 34.10 TC26 512 A curve group @item GNUTLS_@-GROUP_@-GC512B the GOST R 34.10 TC26 512 B curve group @item GNUTLS_@-GROUP_@-GC512C the GOST R 34.10 TC26 512 C curve group @item GNUTLS_@-GROUP_@-FFDHE2048 the FFDHE2048 group @item GNUTLS_@-GROUP_@-FFDHE3072 the FFDHE3072 group @item GNUTLS_@-GROUP_@-FFDHE4096 the FFDHE4096 group @item GNUTLS_@-GROUP_@-FFDHE8192 the FFDHE8192 group @item GNUTLS_@-GROUP_@-FFDHE6144 the FFDHE6144 group @item GNUTLS_@-GROUP_@-MAX -- undescribed -- @end table