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Clarify some comments

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2021-04-09 15:46:51 +02:00
parent bd43f67a9b
commit 392d1010dc
2 changed files with 5 additions and 4 deletions
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4
tests/suites/test_suite_ecp.function
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@ -1216,14 +1216,14 @@ void fix_negative( data_t *N_bin, int c, int bits )
mbedtls_mpi_init( &M );
mbedtls_mpi_init( &N );
/* C = - c * 2^bits */
/* C = - c * 2^bits (positive since c is negative) */
TEST_EQUAL( 0, mbedtls_mpi_lset( &C, -c ) );
TEST_EQUAL( 0, mbedtls_mpi_shift_l( &C, bits ) );
TEST_EQUAL( 0, mbedtls_mpi_read_binary( &N, N_bin->x, N_bin->len ) );
TEST_EQUAL( 0, mbedtls_mpi_grow( &N, C.n ) );
/* M = - ( C - N ) */
/* M = N - C = - ( C - N ) (expected result of fix_negative) */
TEST_EQUAL( 0, mbedtls_mpi_sub_mpi( &M, &N, &C ) );
mbedtls_ecp_fix_negative( &N, c, bits );