Simplify OID tag parsing in x509_get_cert_ext( )
@@ -574,14 +574,10 @@ static int x509_get_crt_ext( unsigned char **p,
end_ext_data = *p + len;
/* Get extension ID */
- if( ( end - *p ) < 1 )
- return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS +
- MBEDTLS_ERR_ASN1_OUT_OF_DATA );
- extn_oid.tag = **p;
-
if( ( ret = mbedtls_asn1_get_tag( p, end, &extn_oid.len, MBEDTLS_ASN1_OID ) ) != 0 )
return( MBEDTLS_ERR_X509_INVALID_EXTENSIONS + ret );
+ extn_oid.tag = MBEDTLS_ASN1_OID;
extn_oid.p = *p;
*p += extn_oid.len;
