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https://github.com/Mbed-TLS/mbedtls.git
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Both compare the least significant limb 1 and the left limbs 0
Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
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@ -1563,7 +1563,7 @@ void ecp_mod_mul_inv(char *input_A, int id, int ctype)
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mbedtls_mpi_uint *A_inverse = NULL;
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mbedtls_mpi_uint *A = NULL;
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mbedtls_mpi_uint *bufx = NULL;
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const mbedtls_mpi_uint one[2] = {1, 0};
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const mbedtls_mpi_uint one[1] = { 1 };
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mbedtls_mpi_mod_modulus_init(&m);
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@ -1588,9 +1588,13 @@ void ecp_mod_mul_inv(char *input_A, int id, int ctype)
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ASSERT_ALLOC(bufx, limbs);
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TEST_EQUAL(mbedtls_mpi_mod_write(&rX, &m, (unsigned char *) bufx,
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limbs * sizeof(mbedtls_mpi_uint),
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limbs * ciL,
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MBEDTLS_MPI_MOD_EXT_REP_LE), 0);
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ASSERT_COMPARE(bufx, 2, one, 2);
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ASSERT_COMPARE(bufx, ciL, one, ciL);
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/*Borrow the buffer of A to compare the left lims with 0 */
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memset(A, 0, limbs * ciL);
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ASSERT_COMPARE(&bufx[1], (limbs - 1) * ciL, A, (limbs - 1) * ciL);
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exit:
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