Diff: tests/suites/test_suite_x509parse.function

Revision:

0:cdf462088d13

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/suites/test_suite_x509parse.function	Thu Jan 05 00:18:44 2017 +0000
@@ -0,0 +1,662 @@
+/* BEGIN_HEADER */
+#include "mbedtls/x509.h"
+#include "mbedtls/x509_crt.h"
+#include "mbedtls/x509_crl.h"
+#include "mbedtls/x509_csr.h"
+#include "mbedtls/pem.h"
+#include "mbedtls/oid.h"
+#include "mbedtls/base64.h"
+
+const mbedtls_x509_crt_profile compat_profile =
+{
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ) |
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_RIPEMD160 ) |
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) |
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
+    0xFFFFFFF, /* Any PK alg    */
+    0xFFFFFFF, /* Any curve     */
+    1024,
+};
+
+int verify_none( void *data, mbedtls_x509_crt *crt, int certificate_depth, uint32_t *flags )
+{
+    ((void) data);
+    ((void) crt);
+    ((void) certificate_depth);
+    *flags |= MBEDTLS_X509_BADCERT_OTHER;
+
+    return 0;
+}
+
+int verify_all( void *data, mbedtls_x509_crt *crt, int certificate_depth, uint32_t *flags )
+{
+    ((void) data);
+    ((void) crt);
+    ((void) certificate_depth);
+    *flags = 0;
+
+    return 0;
+}
+
+/* strsep() not available on Windows */
+char *mystrsep(char **stringp, const char *delim)
+{
+    const char *p;
+    char *ret = *stringp;
+
+    if( *stringp == NULL )
+        return( NULL );
+
+    for( ; ; (*stringp)++ )
+    {
+        if( **stringp == '\0' )
+        {
+            *stringp = NULL;
+            goto done;
+        }
+
+        for( p = delim; *p != '\0'; p++ )
+            if( **stringp == *p )
+            {
+                **stringp = '\0';
+                (*stringp)++;
+                goto done;
+            }
+    }
+
+done:
+    return( ret );
+}
+
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+typedef struct {
+    char buf[512];
+    char *p;
+} verify_print_context;
+
+void verify_print_init( verify_print_context *ctx )
+{
+    memset( ctx, 0, sizeof( verify_print_context ) );
+    ctx->p = ctx->buf;
+}
+
+int verify_print( void *data, mbedtls_x509_crt *crt, int certificate_depth, uint32_t *flags )
+{
+    int ret;
+    verify_print_context *ctx = (verify_print_context *) data;
+    char *p = ctx->p;
+    size_t n = ctx->buf + sizeof( ctx->buf ) - ctx->p;
+    ((void) flags);
+
+    ret = mbedtls_snprintf( p, n, "depth %d - serial ", certificate_depth );
+    MBEDTLS_X509_SAFE_SNPRINTF;
+
+    ret = mbedtls_x509_serial_gets( p, n, &crt->serial );
+    MBEDTLS_X509_SAFE_SNPRINTF;
+
+    ret = mbedtls_snprintf( p, n, " - subject " );
+    MBEDTLS_X509_SAFE_SNPRINTF;
+
+    ret = mbedtls_x509_dn_gets( p, n, &crt->subject );
+    MBEDTLS_X509_SAFE_SNPRINTF;
+
+    ret = mbedtls_snprintf( p, n, "\n" );
+    MBEDTLS_X509_SAFE_SNPRINTF;
+
+    ctx->p = p;
+
+    return( 0 );
+}
+#endif /* MBEDTLS_X509_CRT_PARSE_C */
+/* END_HEADER */
+
+/* BEGIN_DEPENDENCIES
+ * depends_on:MBEDTLS_BIGNUM_C
+ * END_DEPENDENCIES
+ */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
+void x509_cert_info( char *crt_file, char *result_str )
+{
+    mbedtls_x509_crt   crt;
+    char buf[2000];
+    int res;
+
+    mbedtls_x509_crt_init( &crt );
+    memset( buf, 0, 2000 );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+    res = mbedtls_x509_crt_info( buf, 2000, "", &crt );
+
+    TEST_ASSERT( res != -1 );
+    TEST_ASSERT( res != -2 );
+
+    TEST_ASSERT( strcmp( buf, result_str ) == 0 );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRL_PARSE_C */
+void mbedtls_x509_crl_info( char *crl_file, char *result_str )
+{
+    mbedtls_x509_crl   crl;
+    char buf[2000];
+    int res;
+
+    mbedtls_x509_crl_init( &crl );
+    memset( buf, 0, 2000 );
+
+    TEST_ASSERT( mbedtls_x509_crl_parse_file( &crl, crl_file ) == 0 );
+    res = mbedtls_x509_crl_info( buf, 2000, "", &crl );
+
+    TEST_ASSERT( res != -1 );
+    TEST_ASSERT( res != -2 );
+
+    TEST_ASSERT( strcmp( buf, result_str ) == 0 );
+
+exit:
+    mbedtls_x509_crl_free( &crl );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CSR_PARSE_C */
+void mbedtls_x509_csr_info( char *csr_file, char *result_str )
+{
+    mbedtls_x509_csr   csr;
+    char buf[2000];
+    int res;
+
+    mbedtls_x509_csr_init( &csr );
+    memset( buf, 0, 2000 );
+
+    TEST_ASSERT( mbedtls_x509_csr_parse_file( &csr, csr_file ) == 0 );
+    res = mbedtls_x509_csr_info( buf, 2000, "", &csr );
+
+    TEST_ASSERT( res != -1 );
+    TEST_ASSERT( res != -2 );
+
+    TEST_ASSERT( strcmp( buf, result_str ) == 0 );
+
+exit:
+    mbedtls_x509_csr_free( &csr );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C */
+void x509_verify_info( int flags, char *prefix, char *result_str )
+{
+    char buf[2000];
+    int res;
+
+    memset( buf, 0, sizeof( buf ) );
+
+    res = mbedtls_x509_crt_verify_info( buf, sizeof( buf ), prefix, flags );
+
+    TEST_ASSERT( res >= 0 );
+
+    TEST_ASSERT( strcmp( buf, result_str ) == 0 );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_X509_CRL_PARSE_C */
+void x509_verify( char *crt_file, char *ca_file, char *crl_file,
+                  char *cn_name_str, int result, int flags_result,
+                  char *verify_callback )
+{
+    mbedtls_x509_crt   crt;
+    mbedtls_x509_crt   ca;
+    mbedtls_x509_crl    crl;
+    uint32_t         flags = 0;
+    int         res;
+    int (*f_vrfy)(void *, mbedtls_x509_crt *, int, uint32_t *) = NULL;
+    char *      cn_name = NULL;
+
+    mbedtls_x509_crt_init( &crt );
+    mbedtls_x509_crt_init( &ca );
+    mbedtls_x509_crl_init( &crl );
+
+    if( strcmp( cn_name_str, "NULL" ) != 0 )
+        cn_name = cn_name_str;
+
+    if( strcmp( verify_callback, "NULL" ) == 0 )
+        f_vrfy = NULL;
+    else if( strcmp( verify_callback, "verify_none" ) == 0 )
+        f_vrfy = verify_none;
+    else if( strcmp( verify_callback, "verify_all" ) == 0 )
+        f_vrfy = verify_all;
+    else
+        TEST_ASSERT( "No known verify callback selected" == 0 );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &ca, ca_file ) == 0 );
+    TEST_ASSERT( mbedtls_x509_crl_parse_file( &crl, crl_file ) == 0 );
+
+    res = mbedtls_x509_crt_verify_with_profile( &crt, &ca, &crl, &compat_profile, cn_name, &flags, f_vrfy, NULL );
+
+    TEST_ASSERT( res == ( result ) );
+    TEST_ASSERT( flags == (uint32_t)( flags_result ) );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+    mbedtls_x509_crt_free( &ca );
+    mbedtls_x509_crl_free( &crl );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
+void x509_verify_callback( char *crt_file, char *ca_file,
+                           int exp_ret, char *exp_vrfy_out )
+{
+    int ret;
+    mbedtls_x509_crt crt;
+    mbedtls_x509_crt ca;
+    uint32_t flags = 0;
+    verify_print_context vrfy_ctx;
+
+    mbedtls_x509_crt_init( &crt );
+    mbedtls_x509_crt_init( &ca );
+    verify_print_init( &vrfy_ctx );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &ca, ca_file ) == 0 );
+
+    ret = mbedtls_x509_crt_verify( &crt, &ca, NULL, NULL, &flags,
+                                   verify_print, &vrfy_ctx );
+
+    TEST_ASSERT( ret == exp_ret );
+    TEST_ASSERT( strcmp( vrfy_ctx.buf, exp_vrfy_out ) == 0 );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+    mbedtls_x509_crt_free( &ca );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
+void mbedtls_x509_dn_gets( char *crt_file, char *entity, char *result_str )
+{
+    mbedtls_x509_crt   crt;
+    char buf[2000];
+    int res = 0;
+
+    mbedtls_x509_crt_init( &crt );
+    memset( buf, 0, 2000 );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+    if( strcmp( entity, "subject" ) == 0 )
+        res =  mbedtls_x509_dn_gets( buf, 2000, &crt.subject );
+    else if( strcmp( entity, "issuer" ) == 0 )
+        res =  mbedtls_x509_dn_gets( buf, 2000, &crt.issuer );
+    else
+        TEST_ASSERT( "Unknown entity" == 0 );
+
+    TEST_ASSERT( res != -1 );
+    TEST_ASSERT( res != -2 );
+
+    TEST_ASSERT( strcmp( buf, result_str ) == 0 );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
+void mbedtls_x509_time_is_past( char *crt_file, char *entity, int result )
+{
+    mbedtls_x509_crt   crt;
+
+    mbedtls_x509_crt_init( &crt );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+
+    if( strcmp( entity, "valid_from" ) == 0 )
+        TEST_ASSERT( mbedtls_x509_time_is_past( &crt.valid_from ) == result );
+    else if( strcmp( entity, "valid_to" ) == 0 )
+        TEST_ASSERT( mbedtls_x509_time_is_past( &crt.valid_to ) == result );
+    else
+        TEST_ASSERT( "Unknown entity" == 0 );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
+void mbedtls_x509_time_is_future( char *crt_file, char *entity, int result )
+{
+    mbedtls_x509_crt   crt;
+
+    mbedtls_x509_crt_init( &crt );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+
+    if( strcmp( entity, "valid_from" ) == 0 )
+        TEST_ASSERT( mbedtls_x509_time_is_future( &crt.valid_from ) == result );
+    else if( strcmp( entity, "valid_to" ) == 0 )
+        TEST_ASSERT( mbedtls_x509_time_is_future( &crt.valid_to ) == result );
+    else
+        TEST_ASSERT( "Unknown entity" == 0 );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_FS_IO */
+void x509parse_crt_file( char *crt_file, int result )
+{
+    mbedtls_x509_crt crt;
+
+    mbedtls_x509_crt_init( &crt );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == result );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C */
+void x509parse_crt( char *crt_data, char *result_str, int result )
+{
+    mbedtls_x509_crt   crt;
+    unsigned char buf[2000];
+    unsigned char output[2000];
+    int data_len, res;
+
+    mbedtls_x509_crt_init( &crt );
+    memset( buf, 0, 2000 );
+    memset( output, 0, 2000 );
+
+    data_len = unhexify( buf, crt_data );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse( &crt, buf, data_len ) == ( result ) );
+    if( ( result ) == 0 )
+    {
+        res = mbedtls_x509_crt_info( (char *) output, 2000, "", &crt );
+
+        TEST_ASSERT( res != -1 );
+        TEST_ASSERT( res != -2 );
+
+        TEST_ASSERT( strcmp( (char *) output, result_str ) == 0 );
+    }
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CRL_PARSE_C */
+void x509parse_crl( char *crl_data, char *result_str, int result )
+{
+    mbedtls_x509_crl   crl;
+    unsigned char buf[2000];
+    unsigned char output[2000];
+    int data_len, res;
+
+    mbedtls_x509_crl_init( &crl );
+    memset( buf, 0, 2000 );
+    memset( output, 0, 2000 );
+
+    data_len = unhexify( buf, crl_data );
+
+    TEST_ASSERT( mbedtls_x509_crl_parse( &crl, buf, data_len ) == ( result ) );
+    if( ( result ) == 0 )
+    {
+        res = mbedtls_x509_crl_info( (char *) output, 2000, "", &crl );
+
+        TEST_ASSERT( res != -1 );
+        TEST_ASSERT( res != -2 );
+
+        TEST_ASSERT( strcmp( (char *) output, result_str ) == 0 );
+    }
+
+exit:
+    mbedtls_x509_crl_free( &crl );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CSR_PARSE_C */
+void mbedtls_x509_csr_parse( char *csr_der_hex, char *ref_out, int ref_ret )
+{
+    mbedtls_x509_csr csr;
+    unsigned char *csr_der = NULL;
+    char my_out[1000];
+    size_t csr_der_len;
+    int my_ret;
+
+    mbedtls_x509_csr_init( &csr );
+    memset( my_out, 0, sizeof( my_out ) );
+    csr_der = unhexify_alloc( csr_der_hex, &csr_der_len );
+
+    my_ret = mbedtls_x509_csr_parse_der( &csr, csr_der, csr_der_len );
+    TEST_ASSERT( my_ret == ref_ret );
+
+    if( ref_ret == 0 )
+    {
+        size_t my_out_len = mbedtls_x509_csr_info( my_out, sizeof( my_out ), "", &csr );
+        TEST_ASSERT( my_out_len == strlen( ref_out ) );
+        TEST_ASSERT( strcmp( my_out, ref_out ) == 0 );
+    }
+
+exit:
+    mbedtls_x509_csr_free( &csr );
+    mbedtls_free( csr_der );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
+void mbedtls_x509_crt_parse_path( char *crt_path, int ret, int nb_crt )
+{
+    mbedtls_x509_crt chain, *cur;
+    int i;
+
+    mbedtls_x509_crt_init( &chain );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_path( &chain, crt_path ) == ret );
+
+    /* Check how many certs we got */
+    for( i = 0, cur = &chain; cur != NULL; cur = cur->next )
+        if( cur->raw.p != NULL )
+            i++;
+
+    TEST_ASSERT( i == nb_crt );
+
+exit:
+    mbedtls_x509_crt_free( &chain );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C */
+void mbedtls_x509_crt_verify_chain(  char *chain_paths, char *trusted_ca, int flags_result )
+{
+    char* act;
+    uint32_t flags;
+    int result, res;
+    mbedtls_x509_crt trusted, chain;
+
+    result= flags_result?MBEDTLS_ERR_X509_CERT_VERIFY_FAILED:0;
+
+    mbedtls_x509_crt_init( &chain );
+    mbedtls_x509_crt_init( &trusted );
+
+    while( ( act = mystrsep( &chain_paths, " " ) ) != NULL )
+        TEST_ASSERT( mbedtls_x509_crt_parse_file( &chain, act ) == 0 );
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &trusted, trusted_ca ) == 0 );
+
+    res = mbedtls_x509_crt_verify( &chain, &trusted, NULL, NULL, &flags, NULL, NULL );
+
+    TEST_ASSERT( res == ( result ) );
+    TEST_ASSERT( flags == (uint32_t)( flags_result ) );
+
+exit:
+    mbedtls_x509_crt_free( &trusted );
+    mbedtls_x509_crt_free( &chain );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_USE_C */
+void x509_oid_desc( char *oid_str, char *ref_desc )
+{
+    mbedtls_x509_buf oid;
+    const char *desc = NULL;
+    unsigned char buf[20];
+    int ret;
+
+    memset( buf, 0, sizeof buf );
+
+    oid.tag = MBEDTLS_ASN1_OID;
+    oid.len = unhexify( buf, oid_str );
+    oid.p   = buf;
+
+    ret = mbedtls_oid_get_extended_key_usage( &oid, &desc );
+
+    if( strcmp( ref_desc, "notfound" ) == 0 )
+    {
+        TEST_ASSERT( ret != 0 );
+        TEST_ASSERT( desc == NULL );
+    }
+    else
+    {
+        TEST_ASSERT( ret == 0 );
+        TEST_ASSERT( desc != NULL );
+        TEST_ASSERT( strcmp( desc, ref_desc ) == 0 );
+    }
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_USE_C */
+void x509_oid_numstr( char *oid_str, char *numstr, int blen, int ret )
+{
+    mbedtls_x509_buf oid;
+    unsigned char oid_buf[20];
+    char num_buf[100];
+
+    memset( oid_buf, 0x00, sizeof oid_buf );
+    memset( num_buf, 0x2a, sizeof num_buf );
+
+    oid.tag = MBEDTLS_ASN1_OID;
+    oid.len = unhexify( oid_buf, oid_str );
+    oid.p   = oid_buf;
+
+    TEST_ASSERT( (size_t) blen <= sizeof num_buf );
+
+    TEST_ASSERT( mbedtls_oid_get_numeric_string( num_buf, blen, &oid ) == ret );
+
+    if( ret >= 0 )
+    {
+        TEST_ASSERT( num_buf[ret] == 0 );
+        TEST_ASSERT( strcmp( num_buf, numstr ) == 0 );
+    }
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_X509_CHECK_KEY_USAGE */
+void x509_check_key_usage( char *crt_file, int usage, int ret )
+{
+    mbedtls_x509_crt crt;
+
+    mbedtls_x509_crt_init( &crt );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+
+    TEST_ASSERT( mbedtls_x509_crt_check_key_usage( &crt, usage ) == ret );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_FS_IO:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
+void x509_check_extended_key_usage( char *crt_file, char *usage_hex, int ret )
+{
+    mbedtls_x509_crt crt;
+    char oid[50];
+    size_t len;
+
+    mbedtls_x509_crt_init( &crt );
+
+    len = unhexify( (unsigned char *) oid, usage_hex );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+
+    TEST_ASSERT( mbedtls_x509_crt_check_extended_key_usage( &crt, oid, len ) == ret );
+
+exit:
+    mbedtls_x509_crt_free( &crt );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_USE_C */
+void x509_get_time( int tag,  char *time_str, int ret,
+                    int year, int mon, int day,
+                    int hour, int min, int sec )
+{
+    mbedtls_x509_time time;
+    unsigned char buf[17];
+    unsigned char* start = buf;
+    unsigned char* end = buf;
+
+    memset( &time, 0x00, sizeof( time ) );
+    *end = (unsigned char)tag; end++;
+    if( tag == MBEDTLS_ASN1_UTC_TIME )
+        *end = 13;
+    else
+        *end = 15;
+    end++;
+    memcpy( end, time_str, (size_t)*(end - 1) );
+    end += *(end - 1);
+
+    TEST_ASSERT( mbedtls_x509_get_time( &start, end, &time ) == ret );
+    if( ret == 0 )
+    {
+        TEST_ASSERT( year == time.year );
+        TEST_ASSERT( mon  == time.mon  );
+        TEST_ASSERT( day  == time.day  );
+        TEST_ASSERT( hour == time.hour );
+        TEST_ASSERT( min  == time.min  );
+        TEST_ASSERT( sec  == time.sec  );
+    }
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_X509_RSASSA_PSS_SUPPORT */
+void x509_parse_rsassa_pss_params( char *hex_params, int params_tag,
+                                   int ref_msg_md, int ref_mgf_md,
+                                   int ref_salt_len, int ref_ret )
+{
+    int my_ret;
+    mbedtls_x509_buf params;
+    mbedtls_md_type_t my_msg_md, my_mgf_md;
+    int my_salt_len;
+
+    params.p = unhexify_alloc( hex_params, &params.len );
+    params.tag = params_tag;
+
+    my_ret = mbedtls_x509_get_rsassa_pss_params( &params, &my_msg_md, &my_mgf_md,
+                                         &my_salt_len );
+
+    TEST_ASSERT( my_ret == ref_ret );
+
+    if( ref_ret == 0 )
+    {
+        TEST_ASSERT( my_msg_md == (mbedtls_md_type_t) ref_msg_md );
+        TEST_ASSERT( my_mgf_md == (mbedtls_md_type_t) ref_mgf_md );
+        TEST_ASSERT( my_salt_len == ref_salt_len );
+    }
+
+exit:
+    mbedtls_free( params.p );
+}
+/* END_CASE */
+
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_SELF_TEST */
+void x509_selftest()
+{
+    TEST_ASSERT( mbedtls_x509_self_test( 1 ) == 0 );
+}
+/* END_CASE */