2 #include "mbedtls/chacha20.h"
6 * depends_on:MBEDTLS_CHACHA20_C
11 void chacha20_crypt( char *hex_key_string,
12 char *hex_nonce_string,
15 char *hex_dst_string )
17 unsigned char key_str[32]; /* size set by the standard */
18 unsigned char nonce_str[12]; /* size set by the standard */
19 unsigned char src_str[375]; /* max size of binary input */
20 unsigned char dst_str[751]; /* hex expansion of the above */
21 unsigned char output[751];
26 mbedtls_chacha20_context ctx;
28 memset( key_str, 0x00, sizeof( key_str ) );
29 memset( nonce_str, 0x00, sizeof( nonce_str ) );
30 memset( src_str, 0x00, sizeof( src_str ) );
31 memset( dst_str, 0x00, sizeof( dst_str ) );
32 memset( output, 0x00, sizeof( output ) );
34 key_len = unhexify( key_str, hex_key_string );
35 nonce_len = unhexify( nonce_str, hex_nonce_string );
36 src_len = unhexify( src_str, hex_src_string );
37 dst_len = unhexify( dst_str, hex_dst_string );
39 TEST_ASSERT( src_len == dst_len );
40 TEST_ASSERT( key_len == 32U );
41 TEST_ASSERT( nonce_len == 12U );
44 * Test the integrated API
46 TEST_ASSERT( mbedtls_chacha20_crypt( key_str, nonce_str, counter, src_len, src_str, output ) == 0 );
48 hexify( dst_str, output, src_len );
49 TEST_ASSERT( strcmp( (char*) dst_str, hex_dst_string ) == 0 );
52 * Test the streaming API
54 mbedtls_chacha20_init( &ctx );
56 TEST_ASSERT( mbedtls_chacha20_setkey( &ctx, key_str ) == 0 );
58 TEST_ASSERT( mbedtls_chacha20_starts( &ctx, nonce_str, counter ) == 0 );
60 memset( output, 0x00, sizeof( output ) );
61 TEST_ASSERT( mbedtls_chacha20_update( &ctx, src_len, src_str, output ) == 0 );
63 hexify( dst_str, output, src_len );
64 TEST_ASSERT( strcmp( (char*) dst_str, hex_dst_string ) == 0 );
67 * Test the streaming API again, piecewise
70 /* Don't free/init the context nor set the key again,
71 * in order to test that starts() does the right thing. */
72 TEST_ASSERT( mbedtls_chacha20_starts( &ctx, nonce_str, counter ) == 0 );
74 memset( output, 0x00, sizeof( output ) );
75 TEST_ASSERT( mbedtls_chacha20_update( &ctx, 1, src_str, output ) == 0 );
76 TEST_ASSERT( mbedtls_chacha20_update( &ctx, src_len - 1, src_str + 1, output + 1 ) == 0 );
78 hexify( dst_str, output, src_len );
79 TEST_ASSERT( strcmp( (char*) dst_str, hex_dst_string ) == 0 );
81 mbedtls_chacha20_free( &ctx );
85 /* BEGIN_CASE depends_on:MBEDTLS_CHECK_PARAMS:!MBEDTLS_PARAM_FAILED_ALT */
86 void chacha20_bad_params()
88 unsigned char key[32];
89 unsigned char nonce[12];
93 size_t len = sizeof( src );
94 mbedtls_chacha20_context ctx;
96 TEST_INVALID_PARAM( mbedtls_chacha20_init( NULL ) );
97 TEST_VALID_PARAM( mbedtls_chacha20_free( NULL ) );
99 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
100 mbedtls_chacha20_setkey( NULL, key ) );
101 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
102 mbedtls_chacha20_setkey( &ctx, NULL ) );
104 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
105 mbedtls_chacha20_starts( NULL, nonce, counter ) );
106 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
107 mbedtls_chacha20_starts( &ctx, NULL, counter ) );
109 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
110 mbedtls_chacha20_update( NULL, 0, src, dst ) );
111 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
112 mbedtls_chacha20_update( &ctx, len, NULL, dst ) );
113 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
114 mbedtls_chacha20_update( &ctx, len, src, NULL ) );
116 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
117 mbedtls_chacha20_crypt( NULL, nonce, counter, 0, src, dst ) );
118 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
119 mbedtls_chacha20_crypt( key, NULL, counter, 0, src, dst ) );
120 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
121 mbedtls_chacha20_crypt( key, nonce, counter, len, NULL, dst ) );
122 TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA,
123 mbedtls_chacha20_crypt( key, nonce, counter, len, src, NULL ) );
131 /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
132 void chacha20_self_test()
134 TEST_ASSERT( mbedtls_chacha20_self_test( 1 ) == 0 );