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Add buffer holding raw ExtKeyUsage extension data to CRT struct

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The previous commits replace the use of dynamically allocated linked lists
for X.509 name inspection. This commit is the first in a series which attempts
the same for the `ExtendedKeyUsage` extension. So far, when a CRT is parsed,
the extension is traversed and converted into a dynamically allocated linked
list, which is then search through whenever the usage of a CRT needs to be
checked through `mbedtls_x509_check_extended_key_usage()`.

As a first step, this commit introduces a raw buffer holding the bounds
of the `ExtendedKeyUsage` extension to the `mbedtls_x509_crt` structure.
This commit is contained in:
Hanno Becker 2019-02-21 14:24:05 +00:00
parent 8b543b3ca8
commit 7ec9c368f1
2 changed files with 4 additions and 1 deletions
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3
include/mbedtls/x509_crt.h
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@ -87,7 +87,8 @@ typedef struct mbedtls_x509_crt
unsigned int key_usage; /**< Optional key usage extension value: See the values in x509.h */
mbedtls_x509_sequence ext_key_usage; /**< Optional list of extended key usage OIDs. */
mbedtls_x509_sequence ext_key_usage; /**< Optional list of extended key usage OIDs. */
mbedtls_x509_buf_raw ext_key_usage_raw; /**< Raw data of ExtendedKeyUsage extensions. */
unsigned char ns_cert_type; /**< Optional Netscape certificate type extension value: See the values in x509.h */

2
library/x509_crt.c
View File

@ -697,6 +697,8 @@ static int x509_get_crt_ext( unsigned char **p,
case MBEDTLS_X509_EXT_EXTENDED_KEY_USAGE:
/* Parse extended key usage */
crt->ext_key_usage_raw.p = *p;
crt->ext_key_usage_raw.len = end_ext_octet - *p;
if( ( ret = x509_get_ext_key_usage( p, end_ext_octet,
&crt->ext_key_usage ) ) != 0 )
return( ret );