Intermediate hexify out change
diff --git a/tests/suites/test_suite_asn1write.function b/tests/suites/test_suite_asn1write.function
index 40f1fed..3befa44 100644
--- a/tests/suites/test_suite_asn1write.function
+++ b/tests/suites/test_suite_asn1write.function
@@ -11,22 +11,17 @@
  */
 
 /* BEGIN_CASE */
-void mbedtls_asn1_write_octet_string( char *hex_str, char *hex_asn1,
-                              int buf_len, int result )
+void mbedtls_asn1_write_octet_string( uint8_t * str, uint32_t str_len,
+                                      uint8_t * asn1, uint32_t asn1_len,
+                                      int buf_len, int result )
 {
     int ret;
     unsigned char buf[150];
-    unsigned char str[150] = { 0 };
-    unsigned char asn1[150] = { 0 };
-    size_t str_len;
-    size_t asn1_len;
     size_t i;
     unsigned char *p;
 
     memset( buf, GUARD_VAL, sizeof( buf ) );
 
-    str_len = unhexify( str, hex_str );
-    asn1_len = unhexify( asn1, hex_asn1 );
 
     p = buf + GUARD_LEN + buf_len;
 
@@ -41,7 +36,6 @@
 
     if( result >= 0 )
     {
-        TEST_ASSERT( (size_t) ret == asn1_len );
         TEST_ASSERT( p + asn1_len == buf + GUARD_LEN + buf_len );
 
         TEST_ASSERT( memcmp( p, asn1, asn1_len ) == 0 );
@@ -50,21 +44,19 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void mbedtls_asn1_write_ia5_string( char *str, char *hex_asn1,
-                            int buf_len, int result )
+void mbedtls_asn1_write_ia5_string( char * str, uint8_t * asn1,
+                                    uint32_t asn1_len, int buf_len, int result
+                                    )
 {
     int ret;
     unsigned char buf[150];
-    unsigned char asn1[150] = { 0 };
     size_t str_len;
-    size_t asn1_len;
     size_t i;
     unsigned char *p;
 
     memset( buf, GUARD_VAL, sizeof( buf ) );
 
     str_len = strlen( str );
-    asn1_len = unhexify( asn1, hex_asn1 );
 
     p = buf + GUARD_LEN + buf_len;
 
@@ -79,7 +71,6 @@
 
     if( result >= 0 )
     {
-        TEST_ASSERT( (size_t) ret == asn1_len );
         TEST_ASSERT( p + asn1_len == buf + GUARD_LEN + buf_len );
 
         TEST_ASSERT( memcmp( p, asn1, asn1_len ) == 0 );
@@ -88,20 +79,16 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void mbedtls_asn1_write_len( int len, char *check_str, int buf_len,
-                             int result )
+void mbedtls_asn1_write_len( int len, uint8_t * asn1, uint32_t asn1_len,
+                             int buf_len, int result )
 {
     int ret;
     unsigned char buf[150];
-    unsigned char asn1[150];
     unsigned char *p;
-    size_t asn1_len;
     size_t i;
     size_t read_len;
 
     memset( buf, GUARD_VAL, sizeof( buf ) );
-    memset( asn1, 0, sizeof( asn1 ) );
-    asn1_len = unhexify( asn1, check_str );
 
     p = buf + GUARD_LEN + buf_len;
 
@@ -118,7 +105,6 @@
 
     if( result >= 0 )
     {
-        TEST_ASSERT( (size_t) ret == asn1_len );
         TEST_ASSERT( p + asn1_len == buf + GUARD_LEN + buf_len );
 
         TEST_ASSERT( memcmp( p, asn1, asn1_len ) == 0 );