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gssapi: Add support for ECDH GSSAPI KEX

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In particular, gss-nistp256-sha256-* and
gss-curve25519-sha256-*.

Signed-off-by: Pavol Žáčik <pzacik@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Pavol Žáčik
2025-11-25 11:52:48 +01:00
committed by Jakub Jelen
parent 5fed1bc8be
commit 88c2ea6752
16 changed files with 467 additions and 323 deletions
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3
src/ecdh_mbedcrypto.c
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@@ -39,7 +39,8 @@
#ifdef HAVE_ECDH
static mbedtls_ecp_group_id ecdh_kex_type_to_curve(enum ssh_key_exchange_e kex_type) {
if (kex_type == SSH_KEX_ECDH_SHA2_NISTP256) {
if (kex_type == SSH_KEX_ECDH_SHA2_NISTP256 ||
kex_type == SSH_GSS_KEX_ECDH_NISTP256_SHA256) {
return MBEDTLS_ECP_DP_SECP256R1;
} else if (kex_type == SSH_KEX_ECDH_SHA2_NISTP384) {
return MBEDTLS_ECP_DP_SECP384R1;