Diff: tests/suites/test_suite_ecdsa.function

Revision:

0:cdf462088d13

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/suites/test_suite_ecdsa.function	Thu Jan 05 00:18:44 2017 +0000
@@ -0,0 +1,194 @@
+/* BEGIN_HEADER */
+#include "mbedtls/ecdsa.h"
+/* END_HEADER */
+
+/* BEGIN_DEPENDENCIES
+ * depends_on:MBEDTLS_ECDSA_C
+ * END_DEPENDENCIES
+ */
+
+/* BEGIN_CASE */
+void ecdsa_prim_random( int id )
+{
+    mbedtls_ecp_group grp;
+    mbedtls_ecp_point Q;
+    mbedtls_mpi d, r, s;
+    rnd_pseudo_info rnd_info;
+    unsigned char buf[66];
+
+    mbedtls_ecp_group_init( &grp );
+    mbedtls_ecp_point_init( &Q );
+    mbedtls_mpi_init( &d ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s );
+    memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
+    memset( buf, 0, sizeof( buf ) );
+
+    /* prepare material for signature */
+    TEST_ASSERT( rnd_pseudo_rand( &rnd_info, buf, sizeof( buf ) ) == 0 );
+    TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
+    TEST_ASSERT( mbedtls_ecp_gen_keypair( &grp, &d, &Q, &rnd_pseudo_rand, &rnd_info )
+                 == 0 );
+
+    TEST_ASSERT( mbedtls_ecdsa_sign( &grp, &r, &s, &d, buf, sizeof( buf ),
+                             &rnd_pseudo_rand, &rnd_info ) == 0 );
+    TEST_ASSERT( mbedtls_ecdsa_verify( &grp, buf, sizeof( buf ), &Q, &r, &s ) == 0 );
+
+exit:
+    mbedtls_ecp_group_free( &grp );
+    mbedtls_ecp_point_free( &Q );
+    mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
+}
+/* END_CASE */
+
+/* BEGIN_CASE */
+void ecdsa_prim_test_vectors( int id, char *d_str, char *xQ_str, char *yQ_str,
+                              char *k_str, char *hash_str, char *r_str,
+                              char *s_str )
+{
+    mbedtls_ecp_group grp;
+    mbedtls_ecp_point Q;
+    mbedtls_mpi d, r, s, r_check, s_check;
+    unsigned char hash[66], rnd_buf[66];
+    size_t hlen;
+    rnd_buf_info rnd_info;
+
+    mbedtls_ecp_group_init( &grp );
+    mbedtls_ecp_point_init( &Q );
+    mbedtls_mpi_init( &d ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s );
+    mbedtls_mpi_init( &r_check ); mbedtls_mpi_init( &s_check );
+    memset( hash, 0, sizeof( hash ) );
+    memset( rnd_buf, 0, sizeof( rnd_buf ) );
+
+    TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
+    TEST_ASSERT( mbedtls_ecp_point_read_string( &Q, 16, xQ_str, yQ_str ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, d_str ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_read_string( &r_check, 16, r_str ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_read_string( &s_check, 16, s_str ) == 0 );
+    hlen = unhexify(hash, hash_str);
+    rnd_info.buf = rnd_buf;
+    rnd_info.length = unhexify( rnd_buf, k_str );
+
+    /* Fix rnd_buf by shifting it left if necessary */
+    if( grp.nbits % 8 != 0 )
+    {
+        unsigned char shift = 8 - ( grp.nbits % 8 );
+        size_t i;
+
+        for( i = 0; i < rnd_info.length - 1; i++ )
+            rnd_buf[i] = rnd_buf[i] << shift | rnd_buf[i+1] >> ( 8 - shift );
+
+        rnd_buf[rnd_info.length-1] <<= shift;
+    }
+
+    TEST_ASSERT( mbedtls_ecdsa_sign( &grp, &r, &s, &d, hash, hlen,
+                 rnd_buffer_rand, &rnd_info ) == 0 );
+
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &r, &r_check ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &s, &s_check ) == 0 );
+
+    TEST_ASSERT( mbedtls_ecdsa_verify( &grp, hash, hlen, &Q, &r_check, &s_check ) == 0 );
+
+exit:
+    mbedtls_ecp_group_free( &grp );
+    mbedtls_ecp_point_free( &Q );
+    mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
+    mbedtls_mpi_free( &r_check ); mbedtls_mpi_free( &s_check );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_ECDSA_DETERMINISTIC */
+void ecdsa_det_test_vectors( int id, char *d_str, int md_alg,
+                             char *msg, char *r_str, char *s_str )
+{
+    mbedtls_ecp_group grp;
+    mbedtls_mpi d, r, s, r_check, s_check;
+    unsigned char hash[MBEDTLS_MD_MAX_SIZE];
+    size_t hlen;
+    const mbedtls_md_info_t *md_info;
+
+    mbedtls_ecp_group_init( &grp );
+    mbedtls_mpi_init( &d ); mbedtls_mpi_init( &r ); mbedtls_mpi_init( &s );
+    mbedtls_mpi_init( &r_check ); mbedtls_mpi_init( &s_check );
+    memset( hash, 0, sizeof( hash ) );
+
+    TEST_ASSERT( mbedtls_ecp_group_load( &grp, id ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_read_string( &d, 16, d_str ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_read_string( &r_check, 16, r_str ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_read_string( &s_check, 16, s_str ) == 0 );
+
+    md_info = mbedtls_md_info_from_type( md_alg );
+    TEST_ASSERT( md_info != NULL );
+    hlen = mbedtls_md_get_size( md_info );
+    mbedtls_md( md_info, (const unsigned char *) msg, strlen( msg ), hash );
+
+    TEST_ASSERT( mbedtls_ecdsa_sign_det( &grp, &r, &s, &d, hash, hlen, md_alg ) == 0 );
+
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &r, &r_check ) == 0 );
+    TEST_ASSERT( mbedtls_mpi_cmp_mpi( &s, &s_check ) == 0 );
+
+exit:
+    mbedtls_ecp_group_free( &grp );
+    mbedtls_mpi_free( &d ); mbedtls_mpi_free( &r ); mbedtls_mpi_free( &s );
+    mbedtls_mpi_free( &r_check ); mbedtls_mpi_free( &s_check );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_SHA256_C */
+void ecdsa_write_read_random( int id )
+{
+    mbedtls_ecdsa_context ctx;
+    rnd_pseudo_info rnd_info;
+    unsigned char hash[32];
+    unsigned char sig[200];
+    size_t sig_len, i;
+
+    mbedtls_ecdsa_init( &ctx );
+    memset( &rnd_info, 0x00, sizeof( rnd_pseudo_info ) );
+    memset( hash, 0, sizeof( hash ) );
+    memset( sig, 0x2a, sizeof( sig ) );
+
+    /* prepare material for signature */
+    TEST_ASSERT( rnd_pseudo_rand( &rnd_info, hash, sizeof( hash ) ) == 0 );
+
+    /* generate signing key */
+    TEST_ASSERT( mbedtls_ecdsa_genkey( &ctx, id, &rnd_pseudo_rand, &rnd_info ) == 0 );
+
+    /* generate and write signature, then read and verify it */
+    TEST_ASSERT( mbedtls_ecdsa_write_signature( &ctx, MBEDTLS_MD_SHA256,
+                 hash, sizeof( hash ),
+                 sig, &sig_len, &rnd_pseudo_rand, &rnd_info ) == 0 );
+    TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
+                 sig, sig_len ) == 0 );
+
+    /* check we didn't write past the announced length */
+    for( i = sig_len; i < sizeof( sig ); i++ )
+        TEST_ASSERT( sig[i] == 0x2a );
+
+    /* try verification with invalid length */
+    TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
+                 sig, sig_len - 1 ) != 0 );
+    TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
+                 sig, sig_len + 1 ) != 0 );
+
+    /* try invalid sequence tag */
+    sig[0]++;
+    TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
+                 sig, sig_len ) != 0 );
+    sig[0]--;
+
+    /* try modifying r */
+    sig[10]++;
+    TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
+                 sig, sig_len ) != 0 );
+    sig[10]--;
+
+    /* try modifying s */
+    sig[sig_len - 1]++;
+    TEST_ASSERT( mbedtls_ecdsa_read_signature( &ctx, hash, sizeof( hash ),
+                 sig, sig_len ) != 0 );
+    sig[sig_len - 1]--;
+
+exit:
+    mbedtls_ecdsa_free( &ctx );
+}
+/* END_CASE */
+