yuzu-emu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2024-11-30 01:14:23 +01:00
Code Issues Packages Projects Releases Wiki Activity

Add macros to ASN.1 module to parse ASN.1 tags

Browse Source 
The macros simply extract the component bits of an ASN.1 tag value
This commit is contained in:
Andres Amaya Garcia 2017-08-25 17:12:11 +01:00 committed by Andres Amaya Garcia
parent 6f63db7ed5
commit 7512bf7d63
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
include/mbedtls/asn1.h
View File

@ -87,6 +87,22 @@
#define MBEDTLS_ASN1_PRIMITIVE 0x00
#define MBEDTLS_ASN1_CONSTRUCTED 0x20
#define MBEDTLS_ASN1_CONTEXT_SPECIFIC 0x80
/*
* Bit masks for each of the components of an ASN.1 tag as specified in
* Information technnology - ASN.1 encoding rules: Specification of Basic
* Encoding Rules (BER), Canonical Encoding Rules (CER), and Distinguished
* encoding rules (DER) Section 8.1.2.2:
*
* Bit 8 7 6 5 1
* +-------+-----+------------+
* | Class | P/C | Tag number |
* +-------+-----+------------+
*/
#define MBEDTLS_ASN1_TAG_CLASS_MASK ( 0x03 << 6 )
#define MBEDTLS_ASN1_TAG_PC_MASK ( 0x01 << 5 )
#define MBEDTLS_ASN1_TAG_VALUE_MASK ( 0x1F << 0 )
/* \} name */
/* \} addtogroup asn1_module */