1/* BEGIN_HEADER */
2#include "mbedtls/poly1305.h"
3#include <stddef.h>
4/* END_HEADER */
5
6/* BEGIN_DEPENDENCIES
7 * depends_on:MBEDTLS_POLY1305_C
8 * END_DEPENDENCIES
9 */
10
11/* BEGIN_CASE */
12void mbedtls_poly1305( data_t *key, data_t *expected_mac, data_t *src_str )
13{
14    unsigned char mac[16]; /* size set by the standard */
15    mbedtls_poly1305_context ctx;
16
17    memset( mac, 0x00, sizeof( mac ) );
18
19    /*
20     * Test the integrated API
21     */
22    TEST_ASSERT( mbedtls_poly1305_mac( key->x, src_str->x,
23                                       src_str->len, mac ) == 0 );
24
25    ASSERT_COMPARE( mac, expected_mac->len,
26                    expected_mac->x, expected_mac->len );
27
28    /*
29     * Test the streaming API
30     */
31    mbedtls_poly1305_init( &ctx );
32
33    TEST_ASSERT( mbedtls_poly1305_starts( &ctx, key->x ) == 0 );
34
35    TEST_ASSERT( mbedtls_poly1305_update( &ctx, src_str->x, src_str->len ) == 0 );
36
37    TEST_ASSERT( mbedtls_poly1305_finish( &ctx, mac ) == 0 );
38
39    ASSERT_COMPARE( mac, expected_mac->len,
40                    expected_mac->x, expected_mac->len );
41
42    /*
43     * Test the streaming API again, piecewise
44     */
45
46    /* Don't free/init the context, in order to test that starts() does the
47     * right thing. */
48    if( src_str->len >= 1 )
49    {
50        TEST_ASSERT( mbedtls_poly1305_starts( &ctx, key->x ) == 0 );
51
52        TEST_ASSERT( mbedtls_poly1305_update( &ctx, src_str->x, 1 ) == 0 );
53        TEST_ASSERT( mbedtls_poly1305_update( &ctx, src_str->x + 1, src_str->len - 1 ) == 0 );
54
55        TEST_ASSERT( mbedtls_poly1305_finish( &ctx, mac ) == 0 );
56
57        ASSERT_COMPARE( mac, expected_mac->len,
58                        expected_mac->x, expected_mac->len );
59    }
60
61    /*
62     * Again with more pieces
63     */
64    if( src_str->len >= 2 )
65    {
66        TEST_ASSERT( mbedtls_poly1305_starts( &ctx, key->x ) == 0 );
67
68        TEST_ASSERT( mbedtls_poly1305_update( &ctx, src_str->x, 1 ) == 0 );
69        TEST_ASSERT( mbedtls_poly1305_update( &ctx, src_str->x + 1, 1 ) == 0 );
70        TEST_ASSERT( mbedtls_poly1305_update( &ctx, src_str->x + 2, src_str->len - 2 ) == 0 );
71
72        TEST_ASSERT( mbedtls_poly1305_finish( &ctx, mac ) == 0 );
73
74        ASSERT_COMPARE( mac, expected_mac->len,
75                        expected_mac->x, expected_mac->len );
76    }
77
78    mbedtls_poly1305_free( &ctx );
79}
80/* END_CASE */
81
82/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
83void poly1305_selftest()
84{
85    TEST_ASSERT( mbedtls_poly1305_self_test( 1 ) == 0 );
86}
87/* END_CASE */
88