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Tobias Frauenschläger
9393d62591
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.
wolfSSL CSharp Wrappers
This directory contains the CSharp wrapper for the wolfSSL TLS layer with examples.
wolfSSL_CSharp: wolfSSL TLS layer wrappers (library).wolfCrypt-Test: wolfCrypt layer wrapper testing.user_settings.h: wolfCrypt wrapper user settings.
Examples:
wolfSSL-DTLS-PSK-ServerwolfSSL-DTLS-ServerwolfSSL-Example-IOCallbackswolfSSL-TLS-ClientwolfSSL-TLS-PSK-ClientwolfSSL-TLS-PSK-ServerwolfSSL-TLS-ServerwolfSSL-TLS-ServerThreaded
Windows
A Visual Studio solution wolfSSL_CSharp.sln is provided. This will allow you
to build the wrapper library and examples. It includes the wolfSSL Visual Studio
project directly.
To successfully run and build the solution on Windows Visual Studio you will
need to open a new solution wolfSSL_CSharp.sln located in wrapper\CSharp\wolfSSL_CSharp.sln.
Select the CPU type, configuration, and target file.
select Build and either Rebuild Solution or Build Solution.
Linux (Ubuntu) using mono
Prerequisites for linux:
apt-get update
apt-get upgrade
apt-get install mono-complete
Build wolfSSL and install
System-wide install
./autogen.sh
cp wrapper/CSharp/user_settings.h .
./configure --enable-usersettings
make
make check
sudo make install
Local-only install (no sudo required)
./autogen.sh
cp wrapper/CSharp/user_settings.h .
./configure --enable-usersettings --prefix=$(pwd)/install
make
make install
Build and run the wolfCrypt test wrapper
From the wrapper/CSharp directory (cd wrapper/CSharp):
Compile wolfCrypt test:
mcs wolfCrypt-Test/wolfCrypt-Test.cs wolfSSL_CSharp/wolfCrypt.cs wolfSSL_CSharp/wolfSSL.cs wolfSSL_CSharp/X509.cs -OUT:wolfcrypttest.exe
Run with system-wide install:
mono wolfcrypttest.exe
Run with local-only install. The compile step above produced
wolfcrypttest.exe inside wrapper/CSharp/; this run command is invoked
from the wolfSSL project root so the relative paths line up:
LD_LIBRARY_PATH=./install/lib mono wrapper/CSharp/wolfcrypttest.exe
Build and run the wolfSSL client/server test
From the wrapper/CSharp directory (cd wrapper/CSharp):
Compile server:
mcs wolfSSL_CSharp/wolfSSL.cs wolfSSL_CSharp/X509.cs wolfSSL-TLS-Server/wolfSSL-TLS-Server.cs -OUT:server.exe
Compile client:
mcs wolfSSL_CSharp/wolfCrypt.cs wolfSSL-TLS-Client/wolfSSL-TLS-Client.cs wolfSSL_CSharp/wolfSSL.cs wolfSSL_CSharp/X509.cs -OUT:client.exe
Run the example
In one terminal instance run the server:
mono server.exe
And in another terminal instance run the client:
mono client.exe
Enabling SNI
To enable SNI, just pass the -S argument with the specified hostname to the client:
mono client.exe -S hostname
And run the server with the -S flag:
mono server.exe -S