Add submodule dependency filesHEADmaster

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec

1 files changed, 842 insertions, 0 deletions

diff --git a/roms/skiboot/libstb/crypto/mbedtls/tests/suites/test_suite_x509parse.function b/roms/skiboot/libstb/crypto/mbedtls/tests/suites/test_suite_x509parse.function
new file mode 100644
index 000000000..e6b1b4783
--- /dev/null
+++ b/roms/skiboot/libstb/crypto/mbedtls/tests/suites/test_suite_x509parse.function
@@ -0,0 +1,842 @@
+/* BEGIN_HEADER */
+#include "mbedtls/bignum.h"
+#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"
+#include "string.h"
+
+#if MBEDTLS_X509_MAX_INTERMEDIATE_CA > 19
+#error "The value of MBEDTLS_X509_MAX_INTERMEDIATE_C is larger \
+than the current threshold 19. To test larger values, please \
+adapt the script tests/data_files/dir-max/long.sh."
+#endif
+
+/* Test-only profile allowing all digests, PK algorithms, and curves. */
+const mbedtls_x509_crt_profile profile_all =
+{
+    0xFFFFFFFF, /* Any MD        */
+    0xFFFFFFFF, /* Any PK alg    */
+    0xFFFFFFFF, /* Any curve     */
+    1024,
+};
+
+/* Profile for backward compatibility. Allows SHA-1, unlike the default
+   profile. */
+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,
+};
+
+const mbedtls_x509_crt_profile profile_rsa3072 =
+{
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
+    MBEDTLS_X509_ID_FLAG( MBEDTLS_PK_RSA ),
+    0,
+    3072,
+};
+
+const mbedtls_x509_crt_profile profile_sha512 =
+{
+    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;
+}
+
+int verify_fatal( void *data, mbedtls_x509_crt *crt, int certificate_depth, uint32_t *flags )
+{
+    int *levels = (int *) data;
+
+    ((void) crt);
+    ((void) certificate_depth);
+
+    /* Simulate a fatal error in the callback */
+    if( *levels & ( 1 << certificate_depth ) )
+    {
+        *flags |= ( 1 << certificate_depth );
+        return( -1 - certificate_depth );
+    }
+
+    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, " - flags 0x%08x\n", *flags );
+    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_CRL_PARSE_C */
+void mbedtls_x509_crl_parse( char * crl_file, int result )
+{
+    mbedtls_x509_crl   crl;
+    char buf[2000];
+
+    mbedtls_x509_crl_init( &crl );
+    memset( buf, 0, 2000 );
+
+    TEST_ASSERT( mbedtls_x509_crl_parse_file( &crl, crl_file ) == result );
+
+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:MBEDTLS_ECP_RESTARTABLE:MBEDTLS_ECDSA_C */
+void x509_verify_restart( char *crt_file, char *ca_file,
+                          int result, int flags_result,
+                          int max_ops, int min_restart, int max_restart )
+{
+    int ret, cnt_restart;
+    mbedtls_x509_crt_restart_ctx rs_ctx;
+    mbedtls_x509_crt crt;
+    mbedtls_x509_crt ca;
+    uint32_t flags = 0;
+
+    /*
+     * See comments on ecp_test_vect_restart() for op count precision.
+     *
+     * For reference, with mbed TLS 2.6 and default settings:
+     * - ecdsa_verify() for P-256:  ~  6700
+     * - ecdsa_verify() for P-384:  ~ 18800
+     * - x509_verify() for server5 -> test-ca2:             ~ 18800
+     * - x509_verify() for server10 -> int-ca3 -> int-ca2:  ~ 25500
+     */
+
+    mbedtls_x509_crt_restart_init( &rs_ctx );
+    mbedtls_x509_crt_init( &crt );
+    mbedtls_x509_crt_init( &ca );
+
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &crt, crt_file ) == 0 );
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &ca, ca_file ) == 0 );
+
+    mbedtls_ecp_set_max_ops( max_ops );
+
+    cnt_restart = 0;
+    do {
+        ret = mbedtls_x509_crt_verify_restartable( &crt, &ca, NULL,
+                &mbedtls_x509_crt_profile_default, NULL, &flags,
+                NULL, NULL, &rs_ctx );
+    } while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
+
+    TEST_ASSERT( ret == result );
+    TEST_ASSERT( flags == (uint32_t) flags_result );
+
+    TEST_ASSERT( cnt_restart >= min_restart );
+    TEST_ASSERT( cnt_restart <= max_restart );
+
+    /* Do we leak memory when aborting? */
+    ret = mbedtls_x509_crt_verify_restartable( &crt, &ca, NULL,
+            &mbedtls_x509_crt_profile_default, NULL, &flags,
+            NULL, NULL, &rs_ctx );
+    TEST_ASSERT( ret == result || ret == MBEDTLS_ERR_ECP_IN_PROGRESS );
+
+exit:
+    mbedtls_x509_crt_restart_free( &rs_ctx );
+    mbedtls_x509_crt_free( &crt );
+    mbedtls_x509_crt_free( &ca );
+}
+/* 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 *profile_str,
+                  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;
+    const mbedtls_x509_crt_profile *profile;
+
+    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( profile_str, "" ) == 0 )
+        profile = &mbedtls_x509_crt_profile_default;
+    else if( strcmp( profile_str, "next" ) == 0 )
+        profile = &mbedtls_x509_crt_profile_next;
+    else if( strcmp( profile_str, "suite_b" ) == 0 )
+        profile = &mbedtls_x509_crt_profile_suiteb;
+    else if( strcmp( profile_str, "compat" ) == 0 )
+        profile = &compat_profile;
+    else if( strcmp( profile_str, "all" ) == 0 )
+        profile = &profile_all;
+    else
+        TEST_ASSERT( "Unknown algorithm profile" == 0 );
+
+    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, 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, char *name,
+                           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 );
+
+    if( strcmp( name, "NULL" ) == 0 )
+        name = NULL;
+
+    ret = mbedtls_x509_crt_verify_with_profile( &crt, &ca, NULL,
+                                                &compat_profile,
+                                                name, &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( data_t * buf, char * result_str, int result )
+{
+    mbedtls_x509_crt   crt;
+    unsigned char output[2000];
+    int res;
+
+    mbedtls_x509_crt_init( &crt );
+    memset( output, 0, 2000 );
+
+
+    TEST_ASSERT( mbedtls_x509_crt_parse( &crt, buf->x, buf->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( data_t * buf, char * result_str, int result )
+{
+    mbedtls_x509_crl   crl;
+    unsigned char output[2000];
+    int res;
+
+    mbedtls_x509_crl_init( &crl );
+    memset( output, 0, 2000 );
+
+
+    TEST_ASSERT( mbedtls_x509_crl_parse( &crl, buf->x, buf->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( data_t * csr_der, char * ref_out, int ref_ret )
+{
+    mbedtls_x509_csr csr;
+    char my_out[1000];
+    int my_ret;
+
+    mbedtls_x509_csr_init( &csr );
+    memset( my_out, 0, sizeof( my_out ) );
+
+    my_ret = mbedtls_x509_csr_parse_der( &csr, csr_der->x, 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 );
+}
+/* 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_max( char *ca_file, char *chain_dir, int nb_int,
+                                  int ret_chk, int flags_chk )
+{
+    char file_buf[128];
+    int ret;
+    uint32_t flags;
+    mbedtls_x509_crt trusted, chain;
+
+    /*
+     * We expect chain_dir to contain certificates 00.crt, 01.crt, etc.
+     * with NN.crt signed by NN-1.crt
+     */
+
+    mbedtls_x509_crt_init( &trusted );
+    mbedtls_x509_crt_init( &chain );
+
+    /* Load trusted root */
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &trusted, ca_file ) == 0 );
+
+    /* Load a chain with nb_int intermediates (from 01 to nb_int),
+     * plus one "end-entity" cert (nb_int + 1) */
+    ret = mbedtls_snprintf( file_buf, sizeof file_buf, "%s/c%02d.pem", chain_dir,
+                                                            nb_int + 1 );
+    TEST_ASSERT( ret > 0 && (size_t) ret < sizeof file_buf );
+    TEST_ASSERT( mbedtls_x509_crt_parse_file( &chain, file_buf ) == 0 );
+
+    /* Try to verify that chain */
+    ret = mbedtls_x509_crt_verify( &chain, &trusted, NULL, NULL, &flags,
+                                   NULL, NULL );
+    TEST_ASSERT( ret == ret_chk );
+    TEST_ASSERT( flags == (uint32_t) flags_chk );
+
+exit:
+    mbedtls_x509_crt_free( &chain );
+    mbedtls_x509_crt_free( &trusted );
+}
+/* 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, int result,
+                                     char *profile_name, int vrfy_fatal_lvls )
+{
+    char* act;
+    uint32_t flags;
+    int res;
+    mbedtls_x509_crt trusted, chain;
+    const mbedtls_x509_crt_profile *profile = NULL;
+
+    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 );
+
+    if( strcmp( profile_name, "" ) == 0 )
+        profile = &mbedtls_x509_crt_profile_default;
+    else if( strcmp( profile_name, "next" ) == 0 )
+        profile = &mbedtls_x509_crt_profile_next;
+    else if( strcmp( profile_name, "suiteb" ) == 0 )
+        profile = &mbedtls_x509_crt_profile_suiteb;
+    else if( strcmp( profile_name, "rsa3072" ) == 0 )
+        profile = &profile_rsa3072;
+    else if( strcmp( profile_name, "sha512" ) == 0 )
+        profile = &profile_sha512;
+
+    res = mbedtls_x509_crt_verify_with_profile( &chain, &trusted, NULL, profile,
+            NULL, &flags, verify_fatal, &vrfy_fatal_lvls );
+
+    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( data_t * buf, char * ref_desc )
+{
+    mbedtls_x509_buf oid;
+    const char *desc = NULL;
+    int ret;
+
+
+    oid.tag = MBEDTLS_ASN1_OID;
+    oid.p   = buf->x;
+    oid.len   = buf->len;
+
+    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( data_t * oid_buf, char * numstr, int blen, int ret )
+{
+    mbedtls_x509_buf oid;
+    char num_buf[100];
+
+    memset( num_buf, 0x2a, sizeof num_buf );
+
+    oid.tag = MBEDTLS_ASN1_OID;
+    oid.p   = oid_buf->x;
+    oid.len   = oid_buf->len;
+
+    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, data_t * oid, 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_extended_key_usage( &crt, (const char *)oid->x, 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[21];
+    unsigned char* start = buf;
+    unsigned char* end = buf;
+
+    memset( &time, 0x00, sizeof( time ) );
+    *end = (unsigned char)tag; end++;
+    *end = strlen( time_str );
+    TEST_ASSERT( *end < 20 );
+    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( data_t * 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 = hex_params->x;
+    params.len = hex_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:
+    ;;
+}
+/* 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 */