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/*
* Copyright (C) 2015 Martin Willi
* Copyright (C) 2015 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "test_suite.h"
#include <encoding/message.h>
static aead_t *aead;
static iv_gen_t *ivgen;
METHOD(keymat_t, get_version, ike_version_t,
keymat_t *this)
{
return IKEV2;
}
METHOD(keymat_t, get_aead, aead_t*,
keymat_t *this, bool in)
{
return aead;
}
METHOD(aead_t, get_iv_gen, iv_gen_t*,
aead_t *this)
{
return ivgen;
}
METHOD(iv_gen_t, get_iv, bool,
iv_gen_t *this, uint64_t seq, size_t size, uint8_t *buffer)
{
if (size != 8)
{
return FALSE;
}
memcpy(buffer, "\x10\x11\x12\x13\x14\x15\x16\x17", 8);
return TRUE;
}
METHOD(iv_gen_t, allocate_iv, bool,
iv_gen_t *this, uint64_t seq, size_t size, chunk_t *chunk)
{
if (size != 8)
{
return FALSE;
}
*chunk = chunk_alloc(size);
return get_iv(this, seq, chunk->len, chunk->ptr);
}
/**
* Appendix B draft-ietf-ipsecme-chacha20-poly1305-06
*/
START_TEST(test_chacha20poly1305)
{
uint64_t spii, spir;
ike_sa_id_t *id;
message_t *m;
uint32_t window = htonl(10);
chunk_t chunk, exp;
keymat_t keymat = {
.get_version = _get_version,
.create_dh = (void*)return_null,
.create_nonce_gen = (void*)return_null,
.get_aead = _get_aead,
};
m = message_create(IKEV2, 0);
m->set_exchange_type(m, INFORMATIONAL);
htoun64(&spii, 0xc0c1c2c3c4c5c6c7);
htoun64(&spir, 0xd0d1d2d3d4d5d6d7);
id = ike_sa_id_create(IKEV2, spii, spir, FALSE);
m->set_ike_sa_id(m, id);
id->destroy(id);
m->set_source(m, host_create_from_string("1.2.3.4", 4500));
m->set_destination(m, host_create_from_string("4.3.2.1", 4500));
m->set_message_id(m, 9);
m->add_notify(m, TRUE, SET_WINDOW_SIZE, chunk_from_thing(window));
aead = lib->crypto->create_aead(lib->crypto, ENCR_CHACHA20_POLY1305, 32, 4);
ck_assert(aead);
ck_assert(aead->set_key(aead, chunk_from_chars(
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
0xa0,0xa1,0xa2,0xa3)));
INIT(ivgen,
.get_iv = _get_iv,
.allocate_iv = _allocate_iv,
.destroy = (void*)free,
);
aead->get_iv_gen = _get_iv_gen,
ck_assert(m->generate(m, &keymat, NULL) == SUCCESS);
chunk = m->get_packet_data(m);
exp = chunk_from_chars(0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,
0xd0,0xd1,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,
0x2e,0x20,0x25,0x00,0x00,0x00,0x00,0x09,
0x00,0x00,0x00,0x45,0x29,0x00,0x00,0x29,
0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
0x61,0x03,0x94,0x70,0x1f,0x8d,0x01,0x7f,
0x7c,0x12,0x92,0x48,0x89,0x6b,0x71,0xbf,
0xe2,0x52,0x36,0xef,0xd7,0xcd,0xc6,0x70,
0x66,0x90,0x63,0x15,0xb2);
ck_assert_msg(chunk_equals(chunk, exp), "got %B\nexp %B", &chunk, &exp);
ivgen->destroy(ivgen);
aead->destroy(aead);
m->destroy(m);
}
END_TEST
Suite *message_chapoly_suite_create()
{
Suite *s;
TCase *tc;
s = suite_create("chapoly");
tc = tcase_create("ChaCha20Poly1305 IKEv2 encryption");
tcase_add_test(tc, test_chacha20poly1305);
suite_add_tcase(s, tc);
return s;
}
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