Replace the liboqs-based pre-standardization SPHINCS+ implementation
with the native FIPS 205 SLH-DSA implementation across the
certificate / ASN.1 / X.509 layers, and add SLH-DSA-rooted test
certificates plus TLS 1.3 .conf scenarios that exercise the new
verification path. All liboqs SPHINCS+ code is removed.
This enables SLH-DSA for certificate chain authentication: CA
certificates signed with SLH-DSA, certificate signature verification
against an SLH-DSA root. TLS 1.3 entity authentication via
CertificateVerify with SLH-DSA will be added in a follow-up PR.
Follows RFC 9909 (X.509 Algorithm Identifiers for SLH-DSA) and
NIST FIPS 205. Supports both SHAKE and SHA-2 parameter families
across all twelve standardized variants.
DER codec:
- New PrivateKeyDecode, PublicKeyDecode, KeyToDer, PrivateKeyToDer,
PublicKeyToDer with RFC 9909 encoding (bare OCTET STRING containing
4*n raw bytes = SK.seed || SK.prf || PK.seed || PK.root, no nested
wrapper). OID auto-detection across all twelve SHAKE / SHA-2 variants.
- PublicKeyDecode raw-bytes fast path mirrors wc_Falcon_PublicKeyDecode
and wc_Dilithium_PublicKeyDecode so callers (notably
wolfssl_x509_make_der and ConfirmSignature, which pass the raw
BIT STRING contents stashed by StoreKey) decode correctly. Honours
the caller's *inOutIdx start offset.
- Error paths in Private/PublicKeyDecode preserve params/flags/
inOutIdx and only ForceZero the buffer half each helper actually
writes; skip the wipe entirely on BAD_LENGTH_E (no bytes touched).
- ImportPublic uses |= on flags so a Private-then-Public import
sequence retains FLAG_PRIVATE.
OID dispatch:
- 12 standardized NIST OIDs (6 SHAKE + 6 SHA-2) per RFC 9909. The
pre-standardization OID-collision mechanism is removed since NIST
OIDs do not collide.
- wc_SlhDsaOidToParam / wc_SlhDsaOidToCertType return NOT_COMPILED_IN
(rather than -1) for recognised SLH-DSA OIDs whose parameter set
isn't built; wc_IsSlhDsaOid recognises both. The x509 dispatch
surfaces this as a precise diagnostic instead of the generic
"No public key found".
- wc_GetKeyOID picks a placeholder parameter from whatever variant is
compiled in and #errors at compile time if none is.
- asn_orig.c EncodeCert / EncodeCertReq accept SHA-2 SLH-DSA keyTypes
alongside SHAKE.
Tests and fixtures:
- Test cert chain in certs/slhdsa/: SLH-DSA-SHAKE-128s and
SLH-DSA-SHA2-128s self-signed roots that sign reused ML-DSA-44
entity keys (server + client), plus the gen script
(gen-slhdsa-mldsa-certs.sh, OpenSSL >= 3.5).
- New TLS 1.3 .conf scenarios under tests/suites.c dispatch:
test-tls13-slhdsa-shake.conf, test-tls13-slhdsa-sha2.conf, and a
wrong-CA negative test test-tls13-slhdsa-fail.conf.
- DER round-trip and on-disk decode tests; bench_slhdsa_*_key.der
fixtures regenerated with wolfSSL's own encoder so the codec is
pinned to RFC 9909.
- New unit test test_wc_slhdsa_x509_i2d_roundtrip exercises the raw
PublicKeyDecode entry point that wolfssl_x509_make_der relies on.
- test_wc_slhdsa_check_key now tests both Public-then-Private and
Private-then-Public import orderings.
Build / ABI:
- DYNAMIC_TYPE_SPHINCS = 98 kept as RESERVED with a tombstone comment
for ABI stability; new code should use DYNAMIC_TYPE_SLHDSA (107).
- All build system / IDE project files updated; SPHINCS+ sources,
headers, and test data removed.
- Dead bench_slhdsa_*_key arrays removed from gencertbuf.pl and
certs_test.h; the .der files on disk drive the decode tests.
Currently, wolfssl.vcxproj and IDE/WIN10/wolfssl-fips.vcxproj do not use the
same scheme for their output and intermediate directories. Further, across
configuration/platform combinations, wolfssl.vcxproj isn't consistent, either.
For example:
```
Release|x64
OutDir: $(SolutionDir)$(Platform)\$(Configuration)\
IntDir: $(Platform)\$(Configuration)\obj\
Release|Win32
OutDir: $(SolutionDir)$(Configuration)\
IntDir: $(Configuration)\obj\
```
This commit makes every configuration/platform combo for all Visual Studio
projects follow the same pattern:
```
OutDir: $(SolutionDir)$(Platform)\$(Configuration)\
IntDir: $(Configuration)\$(Platform)\$(ProjectName)_obj\
```
The `$(ProjectName)_obj` piece gets rid of a Visual Studio warning about not
mingling the intermediate objects of disparate builds.
Prior to this change I had added a .props file for each .vcxproj to
use MSBuild's $(DefaultPlatformToolset) as the the default for
$(PlatformToolset). Typically that configuration allows for the
appropriate toolset to be used no matter which version of VS2010+
the wolfssl64.sln and project files are opened in. Problem is when an
MSBuild was used from the command line to build the solution it got the
$(DefaultPlatformToolset) from a property file based on the solution
header (currently "Format Version 12.00" which maps to Visual Studio
2012) instead. Another side effect was it set the VisualStudioVersion
to 11.0 (n - 1; n in this case 12.0) which was incorrect.
To remedy the above this change reverts back to the old PlatformToolset
method where the v110 toolset (Visual Studio 2012) is specified in every
configuration in every vcxproj. The user will have to specify explicitly
a different toolset to override it (either via command line or the GUI)
if they are not using VS2012.
VS2010 example:
msbuild -p:Configuration="Debug" wolfssl64.sln -p:PlatformToolset=v100
- Remove extern from declspec in WOLFSSL_API macro.
- Add a property file to *.vcxproj so that $(DefaultPlatformToolset) is
available.
- Remove the specified platform toolset (VS 2012) in *.vcxproj.
This change allows the projects to use $(DefaultPlatformToolset) so that
they will be built using the default platform toolset for whatever
version of Visual Studio 2010+ that loads them.
- Add DLL Release and DLL Debug configurations to *.vcxproj except for
sslSniffer.vcxproj.
The sniffer uses internal library components that aren't exposed in the
wolfSSL DLL so it can only be built by linking to CyaSSL's static lib.
- Change intermediate output directory of obj files to
<current-dir-setting>\obj\.
The purpose of this change is to separate the output files from the
intermediate files because sometimes they can end up in the same dir.
Tobias Frauenschläger
David Garske
Sean Parkinson
res0nance
Anthony Hu
Andras Fekete
Marco Oliverio
Uriah-wolfSSL
Hayden Roche
JacobBarthelmeh
John Safranek
Chris Conlon
abrahamsonn
toddouska
Ludovic FLAMENT
kaleb-himes
Jay Satiro