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kex: Add sntrup761x25519-sha512@openssh.com.

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All of the initial work was done by Simon. Jakub cleaned up the
formatting issues, resolved the padding of bignum to match specs
and be interoperable with OpenSSH (and few more minor details).

Closes: #194.

Signed-off-by: Simon Josefsson <simon@josefsson.org>
Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Sahana Prasad <sahana@redhat.com>
This commit is contained in:
Simon Josefsson
2023-08-02 11:39:48 +02:00
committed by Jakub Jelen
parent 3468cc0dc5
commit 4becc8eb82
16 changed files with 1771 additions and 6 deletions
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36
tests/external_override/torture_override.c
View File

@@ -255,6 +255,37 @@ static void torture_override_ecdh_curve25519_sha256_libssh_org(void **state)
}
#endif /* OPENSSH_CURVE25519_SHA256_LIBSSH_ORG */
#ifdef OPENSSH_SNTRUP761X25519_SHA512_OPENSSH_COM
static void
torture_override_ecdh_sntrup761x25519_sha512_openssh_com(void **state)
{
struct torture_state *s = *state;
bool internal_curve25519_called;
if (ssh_fips_mode()) {
skip();
}
test_algorithm(s->ssh.session,
"sntrup761x25519-sha512@openssh.com",
NULL, /* cipher */
NULL /* hostkey */);
internal_curve25519_called = internal_curve25519_function_called();
/* TODO: when non-internal sntrup761 is supported, this is a good
place to add override checks of the sntrup761-related functions
too. Currently none of our external crypto libraries supports
sntrup761. */
#if SHOULD_CALL_INTERNAL_CURVE25519
assert_true(internal_curve25519_called);
#else
assert_false(internal_curve25519_called);
#endif
}
#endif /* OPENSSH_SNTRUP761X25519_SHA512_OPENSSH_COM */
#ifdef OPENSSH_SSH_ED25519
static void torture_override_ed25519(void **state)
{
@@ -299,6 +330,11 @@ int torture_run_tests(void)
session_setup,
session_teardown),
#endif /* OPENSSH_CURVE25519_SHA256_LIBSSH_ORG */
#ifdef OPENSSH_SNTRUP761X25519_SHA512_OPENSSH_COM
cmocka_unit_test_setup_teardown(torture_override_ecdh_sntrup761x25519_sha512_openssh_com,
session_setup,
session_teardown),
#endif /* OPENSSH_SNTRUP761X25519_SHA512_OPENSSH_COM */
#ifdef OPENSSH_SSH_ED25519
cmocka_unit_test_setup_teardown(torture_override_ed25519,
session_setup,