lib/mbedtls
1
0
Fork 0
mirror of https://github.com/Mbed-TLS/mbedtls.git synced 2025-08-01 10:06:53 +03:00
Code Activity

Merge branch 'development' into driver-wrapper-key-agreement

Browse Source
This commit is contained in:
Aditya Deshpande
2022-11-22 17:58:52 +00:00
parent 8cc1470c18 0fc88779ec
commit 5e3c70e3be
52 changed files with 2701 additions and 825 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
tests/include/test/helpers.h
View File

@ -295,13 +295,19 @@ int mbedtls_test_read_mpi_core( mbedtls_mpi_uint **pX, size_t *plimbs,
/** Read an MPI from a hexadecimal string.
*
* Like mbedtls_mpi_read_string(), but size the resulting bignum based
* on the number of digits in the string. In particular, construct a
* bignum with 0 limbs for an empty string, and a bignum with leading 0
* limbs if the string has sufficiently many leading 0 digits.
* Like mbedtls_mpi_read_string(), but with tighter guarantees around
* edge cases.
*
* This is important so that the "0 (null)" and "0 (1 limb)" and
* "leading zeros" test cases do what they claim.
* - This function guarantees that if \p s begins with '-' then the sign
* bit of the result will be negative, even if the value is 0.
* When this function encounters such a "negative 0", it
* increments #mbedtls_test_case_uses_negative_0.
* - The size of the result is exactly the minimum number of limbs needed
* to fit the digits in the input. In particular, this function constructs
* a bignum with 0 limbs for an empty string, and a bignum with leading 0
* limbs if the string has sufficiently many leading 0 digits.
* This is important so that the "0 (null)" and "0 (1 limb)" and
* "leading zeros" test cases do what they claim.
*
* \param[out] X The MPI object to populate. It must be initialized.
* \param[in] s The null-terminated hexadecimal string to read from.
@ -309,6 +315,14 @@ int mbedtls_test_read_mpi_core( mbedtls_mpi_uint **pX, size_t *plimbs,
* \return \c 0 on success, an \c MBEDTLS_ERR_MPI_xxx error code otherwise.
*/
int mbedtls_test_read_mpi( mbedtls_mpi *X, const char *s );
/** Nonzero if the current test case had an input parsed with
* mbedtls_test_read_mpi() that is a negative 0 (`"-"`, `"-0"`, `"-00"`, etc.,
* constructing a result with the sign bit set to -1 and the value being
* all-limbs-0, which is not a valid representation in #mbedtls_mpi but is
* tested for robustness).
*/
extern unsigned mbedtls_test_case_uses_negative_0;
#endif /* MBEDTLS_BIGNUM_C */
#endif /* TEST_HELPERS_H */