openssl/crypto/objects
Daniel Van Geest d1a8d5a833 Add HKDF algorithms with fixed digests.
Add HKDF-SHA256, HKDF-SHA384 and HKDF-SHA512 which are versions
of HKDF that have the digest pre-set. The digest cannot be changed
for contexts of these types.

RFC 8619 defines algorithm identifiers for these combinations.
These algorithm identifiers will be used in future features, e.g.
KEMRecipientInfo.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <ppzgs1@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/27247)
2025-07-10 11:13:21 +10:00
..
README.md Fix many MarkDown issues in {NOTES*,README*,HACKING,LICENSE}.md files 2020-07-05 11:29:43 +02:00
build.info unified build scheme: add build.info files 2016-02-01 12:46:58 +01:00
o_names.c Stop raising ERR_R_MALLOC_FAILURE in most places 2022-10-05 14:02:03 +02:00
obj_compat.h Fix copyrights 2022-02-03 13:56:38 +01:00
obj_dat.c libapps + libcrypto: Silence warnings on Win64 builds 2025-07-02 17:26:26 +02:00
obj_dat.h Add HKDF algorithms with fixed digests. 2025-07-10 11:13:21 +10:00
obj_dat.pl Copyright year updates 2024-09-05 09:35:49 +02:00
obj_err.c Update copyright year 2021-06-17 13:24:59 +01:00
obj_lib.c Stop raising ERR_R_MALLOC_FAILURE in most places 2022-10-05 14:02:03 +02:00
obj_local.h Add deprecation macro for 3.1 and deprecate OPENSSL_LH_stats 2022-06-22 09:36:14 +02:00
obj_mac.num Add HKDF algorithms with fixed digests. 2025-07-10 11:13:21 +10:00
obj_xref.c Stop raising ERR_R_MALLOC_FAILURE in most places 2022-10-05 14:02:03 +02:00
obj_xref.h SLH_DSA: Make apps.c do_X509_REQ_verify() call work correctly. 2025-02-18 10:17:29 +01:00
obj_xref.txt SLH_DSA: Make apps.c do_X509_REQ_verify() call work correctly. 2025-02-18 10:17:29 +01:00
objects.pl Add a local perl module to get year last changed 2021-03-31 13:59:53 +02:00
objects.txt Add HKDF algorithms with fixed digests. 2025-07-10 11:13:21 +10:00
objxref.pl Add a local perl module to get year last changed 2021-03-31 13:59:53 +02:00

README.md

objects.txt syntax

To cover all the naming hacks that were previously in objects.h needed some kind of hacks in objects.txt.

The basic syntax for adding an object is as follows:

    1 2 3 4         : shortName     : Long Name

            If Long Name contains only word characters and hyphen-minus
            (0x2D) or full stop (0x2E) then Long Name is used as basis
            for the base name in C. Otherwise, the shortName is used.

            The base name (let's call it 'base') will then be used to
            create the C macros SN_base, LN_base, NID_base and OBJ_base.

            Note that if the base name contains spaces, dashes or periods,
            those will be converted to underscore.

Then there are some extra commands:

    !Alias foo 1 2 3 4

            This just makes a name foo for an OID.  The C macro
            OBJ_foo will be created as a result.

    !Cname foo

            This makes sure that the name foo will be used as base name
            in C.

    !module foo
    1 2 3 4         : shortName     : Long Name
    !global

            The !module command was meant to define a kind of modularity.
            What it does is to make sure the module name is prepended
            to the base name.  !global turns this off.  This construction
            is not recursive.

Lines starting with # are treated as comments, as well as any line starting with ! and not matching the commands above.