50 lines
2 KiB
C
50 lines
2 KiB
C
/** Helper functions for tests that manipulate ASN.1 data.
|
|
*/
|
|
/*
|
|
* Copyright The Mbed TLS Contributors
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef ASN1_HELPERS_H
|
|
#define ASN1_HELPERS_H
|
|
|
|
#include "test/helpers.h"
|
|
|
|
/** Skip past an INTEGER in an ASN.1 buffer.
|
|
*
|
|
* Mark the current test case as failed in any of the following conditions:
|
|
* - The buffer does not start with an ASN.1 INTEGER.
|
|
* - The integer's size or parity does not match the constraints expressed
|
|
* through \p min_bits, \p max_bits and \p must_be_odd.
|
|
*
|
|
* \param p Upon entry, `*p` points to the first byte of the
|
|
* buffer to parse.
|
|
* On successful return, `*p` points to the first byte
|
|
* after the parsed INTEGER.
|
|
* On failure, `*p` is unspecified.
|
|
* \param end The end of the ASN.1 buffer.
|
|
* \param min_bits Fail the test case if the integer does not have at
|
|
* least this many significant bits.
|
|
* \param max_bits Fail the test case if the integer has more than
|
|
* this many significant bits.
|
|
* \param must_be_odd Fail the test case if the integer is even.
|
|
*
|
|
* \return \c 0 if the test failed, otherwise 1.
|
|
*/
|
|
int mbedtls_test_asn1_skip_integer( unsigned char **p, const unsigned char *end,
|
|
size_t min_bits, size_t max_bits,
|
|
int must_be_odd );
|
|
|
|
#endif /* ASN1_HELPERS_H */
|