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Add buffer with raw issuer data to CRL structure

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To make use of the X.509 name comparison function based on raw
ASN.1 data that was introduced in the previous commit, this commit
adds an ASN.1 buffer field `issuer_raw_no_hdr` to `mbedtls_x509_crl`
which delimits the raw contents of the CRLs `Issuer` field.

The previous field `issuer_raw` isn't suitable for that because
it includes the ASN.1 header.
This commit is contained in:
Hanno Becker 2019-02-20 13:44:36 +00:00
parent a3a2ca1333
commit a632e3638c
3 changed files with 13 additions and 1 deletions
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9
include/mbedtls/x509.h
View file

@ -183,6 +183,15 @@ extern "C" {
* \{
*/
/**
* Basic length-value buffer structure
*/
typedef struct mbedtls_x509_buf_raw
{
unsigned char *p; /*!< The address of the first byte in the buffer. */
size_t len; /*!< The number of Bytes in the buffer. */
} mbedtls_x509_buf_raw;
/**
* Type-length-value structure that allows for ASN1 using DER.
*/

3
include/mbedtls/x509_crl.h
View file

@ -75,7 +75,8 @@ typedef struct mbedtls_x509_crl
int version; /**< CRL version (1=v1, 2=v2) */
mbedtls_x509_buf sig_oid; /**< CRL signature type identifier */
mbedtls_x509_buf issuer_raw; /**< The raw issuer data (DER). */
mbedtls_x509_buf_raw issuer_raw; /**< The raw issuer data (DER). */
mbedtls_x509_buf_raw issuer_raw_no_hdr;
mbedtls_x509_name issuer; /**< The parsed issuer data (named information object). */

2
library/x509_crl.c
View file

@ -428,6 +428,7 @@ int mbedtls_x509_crl_parse_der( mbedtls_x509_crl *chain,
mbedtls_x509_crl_free( crl );
return( MBEDTLS_ERR_X509_INVALID_FORMAT + ret );
}
crl->issuer_raw_no_hdr.p = p;
if( ( ret = mbedtls_x509_get_name( &p, p + len, &crl->issuer ) ) != 0 )
{
@ -435,6 +436,7 @@ int mbedtls_x509_crl_parse_der( mbedtls_x509_crl *chain,
return( ret );
}
crl->issuer_raw_no_hdr.len = p - crl->issuer_raw_no_hdr.p;
crl->issuer_raw.len = p - crl->issuer_raw.p;
/*