cc1e3df75c
This change makes |CBS_get_any_asn1_element| only handle DER elements. Another function, |CBS_get_any_ber_asn1_element| is exposed internally for the cases where we need to process BER data. Change-Id: I544141a1a3d7913986352a8fd9a6d00b9f282652 Reviewed-on: https://boringssl-review.googlesource.com/4994 Reviewed-by: Adam Langley <agl@google.com>
55 lines
2.2 KiB
C
55 lines
2.2 KiB
C
/* Copyright (c) 2014, 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_BYTESTRING_INTERNAL_H
|
|
#define OPENSSL_HEADER_BYTESTRING_INTERNAL_H
|
|
|
|
#include <openssl/base.h>
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/* CBS_asn1_ber_to_der reads an ASN.1 structure from |in|. If it finds
|
|
* indefinite-length elements then it attempts to convert the BER data to DER
|
|
* and sets |*out| and |*out_length| to describe a malloced buffer containing
|
|
* the DER data. Additionally, |*in| will be advanced over the ASN.1 data.
|
|
*
|
|
* If it doesn't find any indefinite-length elements then it sets |*out| to
|
|
* NULL and |*in| is unmodified.
|
|
*
|
|
* A sufficiently complex ASN.1 structure will break this function because it's
|
|
* not possible to generically convert BER to DER without knowledge of the
|
|
* structure itself. However, this sufficies to handle the PKCS#7 and #12 output
|
|
* from NSS.
|
|
*
|
|
* It returns one on success and zero otherwise. */
|
|
OPENSSL_EXPORT int CBS_asn1_ber_to_der(CBS *in, uint8_t **out, size_t *out_len);
|
|
|
|
/* CBS_get_any_ber_asn1_element acts the same as |CBS_get_any_asn1_element| but
|
|
* also allows indefinite-length elements to be returned. In that case,
|
|
* |*out_header_len| and |CBS_len(out)| will both be two as only the header is
|
|
* returned. */
|
|
OPENSSL_EXPORT int CBS_get_any_ber_asn1_element(CBS *cbs, CBS *out,
|
|
unsigned *out_tag,
|
|
size_t *out_header_len);
|
|
|
|
|
|
#if defined(__cplusplus)
|
|
} /* extern C */
|
|
#endif
|
|
|
|
#endif /* OPENSSL_HEADER_BYTESTRING_INTERNAL_H */
|