ref: bfe9da47cfa2f51ebef78c59332b5ba2deba306d
dir: /third_party/boringssl/src/crypto/pkcs7/internal.h/
/* Copyright (c) 2017, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#ifndef OPENSSL_HEADER_PKCS7_INTERNAL_H
#define OPENSSL_HEADER_PKCS7_INTERNAL_H
#include <openssl/base.h>
#if defined(__cplusplus)
extern "C" {
#endif
// pkcs7_parse_header reads the non-certificate/non-CRL prefix of a PKCS#7
// SignedData blob from |cbs| and sets |*out| to point to the rest of the
// input. If the input is in BER format, then |*der_bytes| will be set to a
// pointer that needs to be freed by the caller once they have finished
// processing |*out| (which will be pointing into |*der_bytes|).
//
// It returns one on success or zero on error. On error, |*der_bytes| is
// NULL.
int pkcs7_parse_header(uint8_t **der_bytes, CBS *out, CBS *cbs);
// pkcs7_add_signed_data writes a PKCS#7, SignedData structure to |out|. While
// doing so it makes callbacks to let the caller fill in parts of the structure.
// All callbacks are ignored if NULL and return one on success or zero on error.
//
// digest_algos_cb: may write AlgorithmIdentifiers into the given CBB, which
// is a SET of digest algorithms.
// cert_crl_cb: may write the |certificates| or |crls| fields.
// (See https://datatracker.ietf.org/doc/html/rfc2315#section-9.1)
// signer_infos_cb: may write the contents of the |signerInfos| field.
// (See https://datatracker.ietf.org/doc/html/rfc2315#section-9.1)
//
// pkcs7_add_signed_data returns one on success or zero on error.
int pkcs7_add_signed_data(CBB *out,
int (*digest_algos_cb)(CBB *out, const void *arg),
int (*cert_crl_cb)(CBB *out, const void *arg),
int (*signer_infos_cb)(CBB *out, const void *arg),
const void *arg);
#if defined(__cplusplus)
} // extern C
#endif
#endif // OPENSSL_HEADER_PKCS7_INTERNAL_H