2 * Copyright (c) 2018 Thomas Pornin <pornin@bolet.org>
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 br_asn1_uint_prepare(const void *xdata
, size_t xlen
)
31 const unsigned char *x
;
35 while (xlen
> 0 && *x
== 0) {
42 if (xlen
== 0 || x
[0] >= 0x80) {
50 br_asn1_encode_length(void *dest
, size_t len
)
64 for (z
= len
; z
!= 0; z
>>= 8) {
69 for (j
= i
- 1; j
>= 0; j
--) {
70 *buf
++ = len
>> (j
<< 3);
78 br_asn1_encode_uint(void *dest
, br_asn1_uint pp
)
84 return 1 + br_asn1_encode_length(NULL
, pp
.asn1len
) + pp
.asn1len
;
88 lenlen
= br_asn1_encode_length(buf
, pp
.asn1len
);
91 memcpy(buf
+ pp
.asn1len
- pp
.len
, pp
.data
, pp
.len
);
92 return 1 + lenlen
+ pp
.asn1len
;