Merge pull request #6573 from tom-cosgrove-arm/convert-mpi_mod_int-test-cases-to-hex
Enable mpi_mod_int test case to take full-range MPI integers
diff --git a/tests/suites/test_suite_bignum.function b/tests/suites/test_suite_bignum.function
index 4cec0a7..5c3d776 100644
--- a/tests/suites/test_suite_bignum.function
+++ b/tests/suites/test_suite_bignum.function
@@ -959,24 +959,57 @@
/* END_CASE */
/* BEGIN_CASE */
-void mpi_mod_int( char * input_X, int input_Y,
- int input_A, int div_result )
+void mpi_mod_int( char * input_X, char * input_Y,
+ char * input_A, int mod_result )
{
mbedtls_mpi X;
+ mbedtls_mpi Y;
+ mbedtls_mpi A;
int res;
mbedtls_mpi_uint r;
- mbedtls_mpi_init( &X );
- TEST_ASSERT( mbedtls_test_read_mpi( &X, input_X ) == 0 );
- res = mbedtls_mpi_mod_int( &r, &X, input_Y );
- TEST_ASSERT( res == div_result );
+ mbedtls_mpi_init( &X );
+ mbedtls_mpi_init( &Y );
+ mbedtls_mpi_init( &A );
+
+ /* We use MPIs to read Y and A since the test framework limits us to
+ * ints, so we can't have 64-bit values */
+ TEST_EQUAL( mbedtls_test_read_mpi( &X, input_X ), 0 );
+ TEST_EQUAL( mbedtls_test_read_mpi( &Y, input_Y ), 0 );
+ TEST_EQUAL( mbedtls_test_read_mpi( &A, input_A ), 0 );
+
+ TEST_EQUAL( Y.n, 1 );
+ TEST_EQUAL( A.n, 1 );
+
+ /* Convert the MPIs for Y and A to (signed) mbedtls_mpi_sints */
+
+ /* Since we're converting sign+magnitude to two's complement, we lose one
+ * bit of value in the output. This means there are some values we can't
+ * represent, e.g. (hex) -A0000000 on 32-bit systems. These are technically
+ * invalid test cases, so could be considered "won't happen", but they are
+ * easy to test for, and this helps guard against human error. */
+
+ mbedtls_mpi_sint y = (mbedtls_mpi_sint) Y.p[0];
+ TEST_ASSERT( y >= 0 ); /* If y < 0 here, we can't make negative y */
+ if( Y.s == -1 )
+ y = -y;
+
+ mbedtls_mpi_sint a = (mbedtls_mpi_sint) A.p[0];
+ TEST_ASSERT( a >= 0 ); /* Same goes for a */
+ if( A.s == -1 )
+ a = -a;
+
+ res = mbedtls_mpi_mod_int( &r, &X, y );
+ TEST_EQUAL( res, mod_result );
if( res == 0 )
{
- TEST_ASSERT( r == (mbedtls_mpi_uint) input_A );
+ TEST_EQUAL( r, a );
}
exit:
mbedtls_mpi_free( &X );
+ mbedtls_mpi_free( &Y );
+ mbedtls_mpi_free( &A );
}
/* END_CASE */
diff --git a/tests/suites/test_suite_bignum.misc.data b/tests/suites/test_suite_bignum.misc.data
index 29ba4ab..0b8aa33 100644
--- a/tests/suites/test_suite_bignum.misc.data
+++ b/tests/suites/test_suite_bignum.misc.data
@@ -1205,40 +1205,72 @@
mpi_mod_mpi:"":"-1":"":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
Base test mbedtls_mpi_mod_int #1
-mpi_mod_int:"3e8":13:12:0
+mpi_mod_int:"3e8":"d":"c":0
Base test mbedtls_mpi_mod_int #2 (Divide by zero)
-mpi_mod_int:"3e8":0:0:MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
+mpi_mod_int:"3e8":"0":"0":MBEDTLS_ERR_MPI_DIVISION_BY_ZERO
Base test mbedtls_mpi_mod_int #3
-mpi_mod_int:"-3e8":13:1:0
+mpi_mod_int:"-3e8":"d":"1":0
Base test mbedtls_mpi_mod_int #4 (Negative modulo)
-mpi_mod_int:"3e8":-13:0:MBEDTLS_ERR_MPI_NEGATIVE_VALUE
+mpi_mod_int:"3e8":"-d":"0":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
Base test mbedtls_mpi_mod_int #5 (Negative modulo)
-mpi_mod_int:"-3e8":-13:0:MBEDTLS_ERR_MPI_NEGATIVE_VALUE
+mpi_mod_int:"-3e8":"-d":"0":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
Base test mbedtls_mpi_mod_int #6 (By 1)
-mpi_mod_int:"3e8":1:0:0
+mpi_mod_int:"3e8":"1":"0":0
Base test mbedtls_mpi_mod_int #7 (By 2)
-mpi_mod_int:"3e9":2:1:0
+mpi_mod_int:"3e9":"2":"1":0
Base test mbedtls_mpi_mod_int #8 (By 2)
-mpi_mod_int:"3e8":2:0:0
+mpi_mod_int:"3e8":"2":"0":0
Test mbedtls_mpi_mod_int: 0 (null) % 1
-mpi_mod_int:"":1:0:0
+mpi_mod_int:"":"1":"0":0
Test mbedtls_mpi_mod_int: 0 (null) % 2
-mpi_mod_int:"":2:0:0
+mpi_mod_int:"":"2":"0":0
Test mbedtls_mpi_mod_int: 0 (null) % -1
-mpi_mod_int:"":-1:0:MBEDTLS_ERR_MPI_NEGATIVE_VALUE
+mpi_mod_int:"":"-1":"0":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
Test mbedtls_mpi_mod_int: 0 (null) % -2
-mpi_mod_int:"":-2:0:MBEDTLS_ERR_MPI_NEGATIVE_VALUE
+mpi_mod_int:"":"-2":"0":MBEDTLS_ERR_MPI_NEGATIVE_VALUE
+
+# CURRENTLY FAILS - SEE GITHUB ISSUE #6540
+#Test mbedtls_mpi_mod_int: 230772460340063000000100500000300000010 % 5178236083361335880 -> 3386266129388798810
+#depends_on:MBEDTLS_HAVE_INT64
+#mpi_mod_int:"AD9D28BF6C4E98FDF156BF0980CEE30A":"47DCCA4847DCCA48":"2EFE6F1A7D28035A":0
+
+Test mbedtls_mpi_mod_mpi: 230772460340063000000100500000300000010 % 5178236083361335880 -> 3386266129388798810
+mpi_mod_mpi:"AD9D28BF6C4E98FDF156BF0980CEE30A":"47DCCA4847DCCA48":"2EFE6F1A7D28035A":0
+
+# CURRENTLY FAILS - SEE GITHUB ISSUE #6540
+#Test mbedtls_mpi_mod_int: 230772460340062999996714233870911201200 % 5178236083361335880 -> 0
+#depends_on:MBEDTLS_HAVE_INT64
+#mpi_mod_int:"AD9D28BF6C4E98FDC2584FEF03A6DFB0":"47DCCA4847DCCA48":"0":0
+
+Test mbedtls_mpi_mod_mpi: 230772460340062999996714233870911201200 % 5178236083361335880 -> 0
+mpi_mod_mpi:"AD9D28BF6C4E98FDC2584FEF03A6DFB0":"47DCCA4847DCCA48":"0":0
+
+# CURRENTLY FAILS WHEN MPIS ARE 32-BIT (ISSUE #6450): WHEN FIXED, REMOVE "depends_on" LINE
+Test mbedtls_mpi_mod_int: 230772460340063000000100500000300000010 % 1205652040 -> 3644370
+depends_on:MBEDTLS_HAVE_INT64
+mpi_mod_int:"AD9D28BF6C4E98FDF156BF0980CEE30A":"47DCCA48":"379BD2":0
+
+Test mbedtls_mpi_mod_mpi: 230772460340063000000100500000300000010 % 1205652040 -> 3644370
+mpi_mod_mpi:"AD9D28BF6C4E98FDF156BF0980CEE30A":"47DCCA48":"379BD2":0
+
+# CURRENTLY FAILS WHEN MPIS ARE 32-BIT (ISSUE #6450): WHEN FIXED, REMOVE "depends_on" LINE
+Test mbedtls_mpi_mod_int: 230772460340063000000100500000296355640 % 1205652040 -> 0
+depends_on:MBEDTLS_HAVE_INT64
+mpi_mod_int:"AD9D28BF6C4E98FDF156BF0980974738":"47DCCA48":"0":0
+
+Test mbedtls_mpi_mod_mpi: 230772460340063000000100500000296355640 % 1205652040 -> 0
+mpi_mod_mpi:"AD9D28BF6C4E98FDF156BF0980974738":"47DCCA48":"0":0
Base test mbedtls_mpi_exp_mod #1
mpi_exp_mod:"17":"d":"1d":"18":0