mbedtls_test_read_mpi_core: allow odd number of hex digits
Test functions must now take a char* argument rather than data_t*. This does
not affect existing test data.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/include/test/helpers.h b/tests/include/test/helpers.h
index fe3b787..6ec967e 100644
--- a/tests/include/test/helpers.h
+++ b/tests/include/test/helpers.h
@@ -298,12 +298,13 @@
* of limbs is 0.
* \param[out] plimbs The address where the number of limbs will be stored.
* \param[in] input The test argument to read.
- * It is interpreted as a big-endian integer in base 256.
+ * It is interpreted as a hexadecimal representation
+ * of a non-negative integer.
*
* \return \c 0 on success, an \c MBEDTLS_ERR_MPI_xxx error code otherwise.
*/
int mbedtls_test_read_mpi_core( mbedtls_mpi_uint **pX, size_t *plimbs,
- const data_t *input );
+ const char *input );
/** Read an MPI from a hexadecimal string.
*
diff --git a/tests/src/helpers.c b/tests/src/helpers.c
index 557c13c..b7c8364 100644
--- a/tests/src/helpers.c
+++ b/tests/src/helpers.c
@@ -348,19 +348,46 @@
#include "bignum_core.h"
int mbedtls_test_read_mpi_core( mbedtls_mpi_uint **pX, size_t *plimbs,
- const data_t *input )
+ const char *input )
{
/* Sanity check */
if( *pX != NULL )
return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
- *plimbs = CHARS_TO_LIMBS( input->len );
+ size_t hex_len = strlen( input );
+ size_t byte_len = ( hex_len + 1 ) / 2;
+ *plimbs = CHARS_TO_LIMBS( byte_len );
if( *plimbs == 0 )
return( 0 );
+
*pX = mbedtls_calloc( *plimbs, sizeof( **pX ) );
if( *pX == NULL )
return( MBEDTLS_ERR_MPI_ALLOC_FAILED );
- return( mbedtls_mpi_core_read_be( *pX, *plimbs, input->x, input->len ) );
+
+ unsigned char *byte_start = ( unsigned char * ) *pX;
+ if( byte_len % sizeof( mbedtls_mpi_uint ) != 0 )
+ {
+ byte_start += sizeof( mbedtls_mpi_uint ) - byte_len % sizeof( mbedtls_mpi_uint );
+ }
+ if( ( hex_len & 1 ) != 0 )
+ {
+ /* mbedtls_test_unhexify wants an even number of hex digits */
+ TEST_ASSERT( ascii2uc( *input, byte_start ) == 0 );
+ ++byte_start;
+ ++input;
+ --byte_len;
+ }
+ TEST_ASSERT( mbedtls_test_unhexify( byte_start,
+ byte_len,
+ input,
+ &byte_len ) == 0 );
+
+ mbedtls_mpi_core_bigendian_to_host( *pX, *plimbs );
+ return( 0 );
+
+exit:
+ mbedtls_free( *pX );
+ return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
}
int mbedtls_test_read_mpi( mbedtls_mpi *X, const char *s )
diff --git a/tests/suites/test_suite_mpi.data b/tests/suites/test_suite_mpi.data
index be4c056..2a1e48f 100644
--- a/tests/suites/test_suite_mpi.data
+++ b/tests/suites/test_suite_mpi.data
@@ -595,13 +595,13 @@
mpi_cmp_mpi:"-1230000000000000000":"0":-1
mbedtls_mpi_core_lt_ct: x=y (1 limb)
-mpi_core_lt_ct:"02B5":"02B5":0
+mpi_core_lt_ct:"2B5":"2B5":0
mbedtls_mpi_core_lt_ct: x>y (1 limb)
-mpi_core_lt_ct:"02B5":"02B4":0
+mpi_core_lt_ct:"2B5":"2B4":0
mbedtls_mpi_core_lt_ct: x<y (1 limb)
-mpi_core_lt_ct:"02B5":"02B6":1
+mpi_core_lt_ct:"2B5":"2B6":1
mbedtls_mpi_core_lt_ct: x=y (0 limbs)
mpi_core_lt_ct:"":"":0
@@ -667,7 +667,7 @@
mpi_core_lt_ct:"000000FF":"FFFFFFFF":1
mbedtls_mpi_core_lt_ct: x<y, zero vs non-zero MS limb
-mpi_core_lt_ct:"00FFFFFFFFFFFFFFFF":"01FFFFFFFFFFFFFFFF":1
+mpi_core_lt_ct:"0FFFFFFFFFFFFFFFF":"1FFFFFFFFFFFFFFFF":1
mbedtls_mpi_core_lt_ct: x>y, equal MS limbs
mpi_core_lt_ct:"EEFFFFFFFFFFFFFFFF":"EEFFFFFFFFFFFFFFF1":0
diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index d450197..2528b9c 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -728,7 +728,7 @@
/* END_CASE */
/* BEGIN_CASE */
-void mpi_core_lt_ct( data_t * input_X, data_t * input_Y, int exp_ret )
+void mpi_core_lt_ct( char *input_X, char *input_Y, int exp_ret )
{
mbedtls_mpi_uint *X = NULL;
size_t X_limbs;