sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2026-04-16 03:00:10 +03:00
Code Issues Packages Projects Releases Wiki Activity

[crypto] Allow for extraction of ASN.1 algorithm parameters

Browse Source 
Some ASN.1 OID-identified algorithms require additional parameters,
such as an initialisation vector for a block cipher.  The structure of
the parameters is defined by the individual algorithm.

Extend asn1_algorithm() to allow these additional parameters to be
returned via a separate ASN.1 cursor.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2024-08-26 23:36:06 +01:00
parent bdb5b4aef4
commit 4b4a362f07
4 changed files with 92 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/include/ipxe/asn1.h
+17 -2
View File
@@ -363,6 +363,15 @@ struct asn1_algorithm {
struct cipher_algorithm *cipher;
/** Elliptic curve (if applicable) */
struct elliptic_curve *curve;
/**
* Parse algorithm parameters (optional)
*
* @v algorithm Algorithm
* @v param Parameters to parse (and potentially modify)
* @ret rc Return status code
*/
int ( * parse ) ( struct asn1_algorithm *algorithm,
struct asn1_cursor *params );
};
/** ASN.1 OID-identified algorithms */
@@ -467,17 +476,23 @@ extern int asn1_integral_bit_string ( const struct asn1_cursor *cursor,
extern int asn1_compare ( const struct asn1_cursor *cursor1,
const struct asn1_cursor *cursor2 );
extern int asn1_algorithm ( const struct asn1_cursor *cursor,
struct asn1_algorithm **algorithm );
struct asn1_algorithm **algorithm,
struct asn1_cursor *params );
extern int asn1_pubkey_algorithm ( const struct asn1_cursor *cursor,
struct asn1_algorithm **algorithm );
extern int asn1_digest_algorithm ( const struct asn1_cursor *cursor,
struct asn1_algorithm **algorithm );
extern int asn1_cipher_algorithm ( const struct asn1_cursor *cursor,
struct asn1_algorithm **algorithm );
struct asn1_algorithm **algorithm,
struct asn1_cursor *params );
extern int asn1_signature_algorithm ( const struct asn1_cursor *cursor,
struct asn1_algorithm **algorithm );
extern int asn1_check_algorithm ( const struct asn1_cursor *cursor,
struct asn1_algorithm *expected );
extern int asn1_parse_cbc ( struct asn1_algorithm *algorithm,
struct asn1_cursor *params );
extern int asn1_parse_gcm ( struct asn1_algorithm *algorithm,
struct asn1_cursor *params );
extern int asn1_generalized_time ( const struct asn1_cursor *cursor,
time_t *time );
extern int asn1_grow ( struct asn1_builder *builder, size_t extra );