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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 <ip_packet.h>
#include <esp_packet.h>
static iv_gen_t *ivgen;
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, u_int64_t seq, size_t size, u_int8_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, u_int64_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 A draft-ietf-ipsecme-chacha20-poly1305-06
*/
START_TEST(test_chapoly)
{
host_t *src, *dst;
ip_packet_t *icmp;
esp_packet_t *esp;
esp_context_t *ctx;
chunk_t data, exp;
u_int32_t seq = 0;
icmp = ip_packet_create(chunk_clone(chunk_from_chars(
0x45,0x00,0x00,0x54,0xa6,0xf2,0x00,0x00,
0x40,0x01,0xe7,0x78,0xc6,0x33,0x64,0x05,
0xc0,0x00,0x02,0x05,0x08,0x00,0x5b,0x7a,
0x3a,0x08,0x00,0x00,0x55,0x3b,0xec,0x10,
0x00,0x07,0x36,0x27,0x08,0x09,0x0a,0x0b,
0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,
0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,
0x1c,0x1d,0x1e,0x1f,0x20,0x21,0x22,0x23,
0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,
0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,
0x34,0x35,0x36,0x37)));
ck_assert(icmp);
src = host_create_from_string("203.0.113.153", 0);
dst = host_create_from_string("203.0.113.5", 0);
esp = esp_packet_create_from_payload(src, dst, icmp);
ctx = esp_context_create(ENCR_CHACHA20_POLY1305, 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),
AUTH_UNDEFINED, chunk_empty, FALSE);
while (seq != 4)
{
ck_assert(ctx->next_seqno(ctx, &seq));
}
INIT(ivgen,
.get_iv = _get_iv,
.allocate_iv = _allocate_iv,
.destroy = (void*)free,
);
ctx->get_aead(ctx)->get_iv_gen = _get_iv_gen;
ck_assert(esp->encrypt(esp, ctx, htonl(0x01020304)) == SUCCESS);
data = esp->packet.get_data(&esp->packet);
exp = chunk_from_chars(0x01,0x02,0x03,0x04,0x00,0x00,0x00,0x05,
0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
0x24,0x03,0x94,0x28,0xb9,0x7f,0x41,0x7e,
0x3c,0x13,0x75,0x3a,0x4f,0x05,0x08,0x7b,
0x67,0xc3,0x52,0xe6,0xa7,0xfa,0xb1,0xb9,
0x82,0xd4,0x66,0xef,0x40,0x7a,0xe5,0xc6,
0x14,0xee,0x80,0x99,0xd5,0x28,0x44,0xeb,
0x61,0xaa,0x95,0xdf,0xab,0x4c,0x02,0xf7,
0x2a,0xa7,0x1e,0x7c,0x4c,0x4f,0x64,0xc9,
0xbe,0xfe,0x2f,0xac,0xc6,0x38,0xe8,0xf3,
0xcb,0xec,0x16,0x3f,0xac,0x46,0x9b,0x50,
0x27,0x73,0xf6,0xfb,0x94,0xe6,0x64,0xda,
0x91,0x65,0xb8,0x28,0x29,0xf6,0x41,0xe0,
0x76,0xAA,0xA8,0x26,0x6B,0x7F,0xB0,0xF7,
0xB1,0x1B,0x36,0x99,0x07,0xE1,0xAD,0x43);
ck_assert_msg(chunk_equals(data, exp), "got %B\nexp %B", &data, &exp);
esp->destroy(esp);
ctx->destroy(ctx);
ivgen->destroy(ivgen);
}
END_TEST
Suite *chapoly_suite_create()
{
Suite *s;
TCase *tc;
s = suite_create("chapoly");
tc = tcase_create("ChaCha20Poly1305 ESP encryption");
tcase_add_test(tc, test_chapoly);
suite_add_tcase(s, tc);
return s;
}
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