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/** 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 */
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