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Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +01001/* BEGIN_HEADER */
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +00002#include "mbedtls/hmac_drbg.h"
Mohammad Azim Khan67735d52017-04-06 11:55:43 +01003#include "string.h"
Rich Evans00ab4702015-02-06 13:43:58 +00004
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +01005typedef struct
6{
7 unsigned char *p;
8 size_t len;
9} entropy_ctx;
10
Reut Caspie278b362017-10-19 08:49:19 +010011static int mbedtls_test_entropy_func( void *data, unsigned char *buf, size_t len )
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +010012{
13 entropy_ctx *ctx = (entropy_ctx *) data;
14
15 if( len > ctx->len )
16 return( -1 );
17
18 memcpy( buf, ctx->p, len );
19
20 ctx->p += len;
21 ctx->len -= len;
22
23 return( 0 );
24}
25/* END_HEADER */
26
27/* BEGIN_DEPENDENCIES
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020028 * depends_on:MBEDTLS_HMAC_DRBG_C
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +010029 * END_DEPENDENCIES
30 */
31
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010032/* BEGIN_CASE */
33void hmac_drbg_entropy_usage( int md_alg )
34{
35 unsigned char out[16];
36 unsigned char buf[1024];
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020037 const mbedtls_md_info_t *md_info;
38 mbedtls_hmac_drbg_context ctx;
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010039 entropy_ctx entropy;
40 size_t last_len, i, reps = 10;
41
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +020042 mbedtls_hmac_drbg_init( &ctx );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010043 memset( buf, 0, sizeof( buf ) );
44 memset( out, 0, sizeof( out ) );
45
46 entropy.len = sizeof( buf );
47 entropy.p = buf;
48
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020049 md_info = mbedtls_md_info_from_type( md_alg );
Paul Bakker94b916c2014-04-17 16:07:20 +020050 TEST_ASSERT( md_info != NULL );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010051
52 /* Init must use entropy */
53 last_len = entropy.len;
Reut Caspie278b362017-10-19 08:49:19 +010054 TEST_ASSERT( mbedtls_hmac_drbg_seed( &ctx, md_info, mbedtls_test_entropy_func, &entropy,
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010055 NULL, 0 ) == 0 );
56 TEST_ASSERT( entropy.len < last_len );
57
58 /* By default, PR is off and reseed_interval is large,
59 * so the next few calls should not use entropy */
60 last_len = entropy.len;
61 for( i = 0; i < reps; i++ )
62 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020063 TEST_ASSERT( mbedtls_hmac_drbg_random( &ctx, out, sizeof( out ) - 4 ) == 0 );
64 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, out, sizeof( out ) - 4,
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010065 buf, 16 ) == 0 );
66 }
67 TEST_ASSERT( entropy.len == last_len );
68
69 /* While at it, make sure we didn't write past the requested length */
70 TEST_ASSERT( out[sizeof( out ) - 4] == 0 );
71 TEST_ASSERT( out[sizeof( out ) - 3] == 0 );
72 TEST_ASSERT( out[sizeof( out ) - 2] == 0 );
73 TEST_ASSERT( out[sizeof( out ) - 1] == 0 );
74
75 /* Set reseed_interval to the number of calls done,
76 * so the next call should reseed */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020077 mbedtls_hmac_drbg_set_reseed_interval( &ctx, 2 * reps );
78 TEST_ASSERT( mbedtls_hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010079 TEST_ASSERT( entropy.len < last_len );
80
81 /* The new few calls should not reseed */
82 last_len = entropy.len;
83 for( i = 0; i < reps / 2; i++ )
84 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020085 TEST_ASSERT( mbedtls_hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
86 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, out, sizeof( out ) ,
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010087 buf, 16 ) == 0 );
88 }
89 TEST_ASSERT( entropy.len == last_len );
90
91 /* Now enable PR, so the next few calls should all reseed */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020092 mbedtls_hmac_drbg_set_prediction_resistance( &ctx, MBEDTLS_HMAC_DRBG_PR_ON );
93 TEST_ASSERT( mbedtls_hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010094 TEST_ASSERT( entropy.len < last_len );
95
96 /* Finally, check setting entropy_len */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020097 mbedtls_hmac_drbg_set_entropy_len( &ctx, 42 );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +010098 last_len = entropy.len;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020099 TEST_ASSERT( mbedtls_hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100100 TEST_ASSERT( (int) last_len - entropy.len == 42 );
101
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200102 mbedtls_hmac_drbg_set_entropy_len( &ctx, 13 );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100103 last_len = entropy.len;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200104 TEST_ASSERT( mbedtls_hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100105 TEST_ASSERT( (int) last_len - entropy.len == 13 );
Paul Bakkerbd51b262014-07-10 15:26:12 +0200106
107exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200108 mbedtls_hmac_drbg_free( &ctx );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100109}
110/* END_CASE */
111
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200112/* BEGIN_CASE depends_on:MBEDTLS_FS_IO */
Azim Khanf1aaec92017-05-30 14:23:15 +0100113void hmac_drbg_seed_file( int md_alg, char * path, int ret )
Manuel Pégourié-Gonnard48bc3e82014-01-30 21:11:16 +0100114{
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200115 const mbedtls_md_info_t *md_info;
116 mbedtls_hmac_drbg_context ctx;
Manuel Pégourié-Gonnard48bc3e82014-01-30 21:11:16 +0100117
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +0200118 mbedtls_hmac_drbg_init( &ctx );
119
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200120 md_info = mbedtls_md_info_from_type( md_alg );
Paul Bakker94b916c2014-04-17 16:07:20 +0200121 TEST_ASSERT( md_info != NULL );
122
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +0200123 TEST_ASSERT( mbedtls_hmac_drbg_seed( &ctx, md_info, rnd_std_rand, NULL,
Manuel Pégourié-Gonnard48bc3e82014-01-30 21:11:16 +0100124 NULL, 0 ) == 0 );
125
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200126 TEST_ASSERT( mbedtls_hmac_drbg_write_seed_file( &ctx, path ) == ret );
127 TEST_ASSERT( mbedtls_hmac_drbg_update_seed_file( &ctx, path ) == ret );
Manuel Pégourié-Gonnard48bc3e82014-01-30 21:11:16 +0100128
Paul Bakkerbd51b262014-07-10 15:26:12 +0200129exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200130 mbedtls_hmac_drbg_free( &ctx );
Manuel Pégourié-Gonnard48bc3e82014-01-30 21:11:16 +0100131}
132/* END_CASE */
133
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100134/* BEGIN_CASE */
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100135void hmac_drbg_buf( int md_alg )
136{
137 unsigned char out[16];
138 unsigned char buf[100];
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200139 const mbedtls_md_info_t *md_info;
140 mbedtls_hmac_drbg_context ctx;
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100141 size_t i;
142
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +0200143 mbedtls_hmac_drbg_init( &ctx );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100144 memset( buf, 0, sizeof( buf ) );
145 memset( out, 0, sizeof( out ) );
146
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200147 md_info = mbedtls_md_info_from_type( md_alg );
Paul Bakker94b916c2014-04-17 16:07:20 +0200148 TEST_ASSERT( md_info != NULL );
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +0200149 TEST_ASSERT( mbedtls_hmac_drbg_seed_buf( &ctx, md_info, buf, sizeof( buf ) ) == 0 );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100150
151 /* Make sure it never tries to reseed (would segfault otherwise) */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200152 mbedtls_hmac_drbg_set_reseed_interval( &ctx, 3 );
153 mbedtls_hmac_drbg_set_prediction_resistance( &ctx, MBEDTLS_HMAC_DRBG_PR_ON );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100154
155 for( i = 0; i < 30; i++ )
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200156 TEST_ASSERT( mbedtls_hmac_drbg_random( &ctx, out, sizeof( out ) ) == 0 );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100157
Paul Bakkerbd51b262014-07-10 15:26:12 +0200158exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200159 mbedtls_hmac_drbg_free( &ctx );
Manuel Pégourié-Gonnard4f880a52014-01-30 22:39:42 +0100160}
161/* END_CASE */
162
163/* BEGIN_CASE */
Azim Khanf1aaec92017-05-30 14:23:15 +0100164void hmac_drbg_no_reseed( int md_alg, uint8_t * entropy,
165 uint32_t entropy_len, uint8_t * custom,
166 uint32_t custom_len, uint8_t * add1,
167 uint32_t add1_len, uint8_t * add2,
168 uint32_t add2_len, uint8_t * output,
169 uint32_t out_len )
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100170{
Manuel Pégourié-Gonnarde6cdbbd2014-02-01 11:30:03 +0100171 unsigned char data[1024];
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100172 unsigned char my_output[512];
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100173 entropy_ctx p_entropy;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200174 const mbedtls_md_info_t *md_info;
175 mbedtls_hmac_drbg_context ctx;
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100176
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +0200177 mbedtls_hmac_drbg_init( &ctx );
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100178
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100179 p_entropy.p = entropy;
Azim Khanf1aaec92017-05-30 14:23:15 +0100180 p_entropy.len = entropy_len;
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100181
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200182 md_info = mbedtls_md_info_from_type( md_alg );
Paul Bakker94b916c2014-04-17 16:07:20 +0200183 TEST_ASSERT( md_info != NULL );
Manuel Pégourié-Gonnarde6cdbbd2014-02-01 11:30:03 +0100184
185 /* Test the simplified buffer-based variant */
186 memcpy( data, entropy, p_entropy.len );
187 memcpy( data + p_entropy.len, custom, custom_len );
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +0200188 TEST_ASSERT( mbedtls_hmac_drbg_seed_buf( &ctx, md_info,
Manuel Pégourié-Gonnarde6cdbbd2014-02-01 11:30:03 +0100189 data, p_entropy.len + custom_len ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200190 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, my_output, out_len,
Manuel Pégourié-Gonnarde6cdbbd2014-02-01 11:30:03 +0100191 add1, add1_len ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200192 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, my_output, out_len,
Manuel Pégourié-Gonnarde6cdbbd2014-02-01 11:30:03 +0100193 add2, add2_len ) == 0 );
Paul Bakkerbd51b262014-07-10 15:26:12 +0200194
195 /* clear for second run */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200196 mbedtls_hmac_drbg_free( &ctx );
Manuel Pégourié-Gonnarde6cdbbd2014-02-01 11:30:03 +0100197
198 TEST_ASSERT( memcmp( my_output, output, out_len ) == 0 );
199
200 /* And now the normal entropy-based variant */
Reut Caspie278b362017-10-19 08:49:19 +0100201 TEST_ASSERT( mbedtls_hmac_drbg_seed( &ctx, md_info, mbedtls_test_entropy_func, &p_entropy,
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100202 custom, custom_len ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200203 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, my_output, out_len,
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100204 add1, add1_len ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200205 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, my_output, out_len,
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100206 add2, add2_len ) == 0 );
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100207 TEST_ASSERT( memcmp( my_output, output, out_len ) == 0 );
Manuel Pégourié-Gonnarde6cdbbd2014-02-01 11:30:03 +0100208
Paul Bakkerbd51b262014-07-10 15:26:12 +0200209exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200210 mbedtls_hmac_drbg_free( &ctx );
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100211}
212/* END_CASE */
213
214/* BEGIN_CASE */
Azim Khanf1aaec92017-05-30 14:23:15 +0100215void hmac_drbg_nopr( int md_alg, uint8_t * entropy, uint32_t entropy_len,
216 uint8_t * custom, uint32_t custom_len, uint8_t * add1,
217 uint32_t add1_len, uint8_t * add2, uint32_t add2_len,
218 uint8_t * add3, uint32_t add3_len, uint8_t * output,
219 uint32_t out_len )
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100220{
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100221 unsigned char my_output[512];
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100222 entropy_ctx p_entropy;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200223 const mbedtls_md_info_t *md_info;
224 mbedtls_hmac_drbg_context ctx;
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100225
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +0200226 mbedtls_hmac_drbg_init( &ctx );
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100227
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100228 p_entropy.p = entropy;
Azim Khanf1aaec92017-05-30 14:23:15 +0100229 p_entropy.len = entropy_len;
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100230
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200231 md_info = mbedtls_md_info_from_type( md_alg );
Paul Bakker94b916c2014-04-17 16:07:20 +0200232 TEST_ASSERT( md_info != NULL );
233
Reut Caspie278b362017-10-19 08:49:19 +0100234 TEST_ASSERT( mbedtls_hmac_drbg_seed( &ctx, md_info, mbedtls_test_entropy_func, &p_entropy,
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100235 custom, custom_len ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200236 TEST_ASSERT( mbedtls_hmac_drbg_reseed( &ctx, add1, add1_len ) == 0 );
237 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, my_output, out_len,
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100238 add2, add2_len ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200239 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, my_output, out_len,
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100240 add3, add3_len ) == 0 );
Manuel Pégourié-Gonnard24600b72014-01-31 09:54:14 +0100241
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100242 TEST_ASSERT( memcmp( my_output, output, out_len ) == 0 );
243
Paul Bakkerbd51b262014-07-10 15:26:12 +0200244exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200245 mbedtls_hmac_drbg_free( &ctx );
Manuel Pégourié-Gonnard6801f392014-01-30 17:22:14 +0100246}
247/* END_CASE */
248
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100249/* BEGIN_CASE */
Azim Khanf1aaec92017-05-30 14:23:15 +0100250void hmac_drbg_pr( int md_alg, uint8_t * entropy, uint32_t entropy_len,
251 uint8_t * custom, uint32_t custom_len, uint8_t * add1,
252 uint32_t add1_len, uint8_t * add2, uint32_t add2_len,
253 uint8_t * output, uint32_t out_len )
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100254{
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100255 unsigned char my_output[512];
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100256 entropy_ctx p_entropy;
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200257 const mbedtls_md_info_t *md_info;
258 mbedtls_hmac_drbg_context ctx;
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100259
Manuel Pégourié-Gonnardf9e94812015-04-28 22:07:14 +0200260 mbedtls_hmac_drbg_init( &ctx );
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100261
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100262 p_entropy.p = entropy;
Azim Khanf1aaec92017-05-30 14:23:15 +0100263 p_entropy.len = entropy_len;
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100264
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200265 md_info = mbedtls_md_info_from_type( md_alg );
Paul Bakker94b916c2014-04-17 16:07:20 +0200266 TEST_ASSERT( md_info != NULL );
267
Reut Caspie278b362017-10-19 08:49:19 +0100268 TEST_ASSERT( mbedtls_hmac_drbg_seed( &ctx, md_info, mbedtls_test_entropy_func, &p_entropy,
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100269 custom, custom_len ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200270 mbedtls_hmac_drbg_set_prediction_resistance( &ctx, MBEDTLS_HMAC_DRBG_PR_ON );
271 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, my_output, out_len,
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100272 add1, add1_len ) == 0 );
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200273 TEST_ASSERT( mbedtls_hmac_drbg_random_with_add( &ctx, my_output, out_len,
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100274 add2, add2_len ) == 0 );
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100275
276 TEST_ASSERT( memcmp( my_output, output, out_len ) == 0 );
Paul Bakkerbd51b262014-07-10 15:26:12 +0200277
278exit:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200279 mbedtls_hmac_drbg_free( &ctx );
Manuel Pégourié-Gonnard62273b82014-01-31 10:16:57 +0100280}
281/* END_CASE */
282
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200283/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
Azim Khanf1aaec92017-05-30 14:23:15 +0100284void hmac_drbg_selftest( )
Manuel Pégourié-Gonnard79afaa02014-01-31 11:12:09 +0100285{
Andres AG93012e82016-09-09 09:10:28 +0100286 TEST_ASSERT( mbedtls_hmac_drbg_self_test( 1 ) == 0 );
Manuel Pégourié-Gonnard79afaa02014-01-31 11:12:09 +0100287}
288/* END_CASE */