Add LMS/HSS (verify only) to wolfCrypt JNI and wolfJCE

.github/workflows/linux-common.yml

@@ -50,13 +50,17 @@ jobs:
         run: |
           echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$GITHUB_WORKSPACE/build-dir/lib" >> "$GITHUB_ENV"
 
-      # Only copy appropriate makefile for platform currently being tested
+      # Only copy appropriate makefile for platform currently being tested.
+      # Use 'cat > ' rather than 'cp': macOS runners intermittently fail 'cp'
+      # with "fcopyfile failed: Illegal byte sequence" when copyfile() tries to
+      # replicate the source's extended attributes (e.g. com.apple.provenance).
+      # Redirecting content copies only the file data and avoids that path.
       - name: Copy makefile
         run: |
           if [ "$RUNNER_OS" == "Linux" ]; then
-              cp makefile.linux makefile
+              cat makefile.linux > makefile
           elif [ "$RUNNER_OS" == "macOS" ]; then
-              cp makefile.macosx makefile
+              cat makefile.macosx > makefile
           else
             echo "$RUNNER_OS not supported"
             exit 1

.github/workflows/main.yml

@@ -144,6 +144,38 @@ jobs:
       jdk_version: ${{ matrix.jdk_version }}
       wolfssl_configure: ${{ matrix.wolfssl_configure }}
 
+  # ----------------------- LMS / HSS (RFC 8554) ------------------------
+  # LMS/HSS is verify-only in wolfJCE and requires wolfSSL to be built with
+  # --enable-lms. It is not pulled in by --enable-all, so it is enabled
+  # explicitly. The --enable-lms option is comma-separated and selects the
+  # build variant and hash/parameter families:
+  #   (default)      SHA-256/256 parameter sets, sign + verify
+  #   verify-only    -> WOLFSSL_LMS_VERIFY_ONLY  (wolfJCE production posture)
+  #   small          -> WOLFSSL_WC_LMS_SMALL     (low-memory, slower codepath)
+  #   sha256-192     -> WOLFSSL_LMS_SHA256_192   (RFC 9858 SHA-256/192 sets)
+  #   shake256       -> WOLFSSL_LMS_SHAKE256     (RFC 9858 SHAKE256 sets)
+  # The LMS JUnit tests skip per hash family not compiled in (the JNI import
+  # returns NOT_COMPILED_IN), so each permutation runs the KATs it can and
+  # skips the rest. SHAKE parameter sets additionally require --enable-sha3.
+  linux-zulu-lms:
+    strategy:
+      matrix:
+        os: [ 'ubuntu-latest', 'macos-latest' ]
+        jdk_version: [ '11', '21', '24' ]
+        wolfssl_configure:
+          - '--enable-jni --enable-lms'
+          - '--enable-jni --enable-lms=verify-only'
+          - '--enable-jni --enable-lms=verify-only,small'
+          - '--enable-jni --enable-lms=sha256-192,shake256 --enable-sha3'
+          - '--enable-jni --enable-all --enable-lms'
+    name: ${{ matrix.os }} (Zulu JDK ${{ matrix.jdk_version }}, ${{ matrix.wolfssl_configure }})
+    uses: ./.github/workflows/linux-common.yml
+    with:
+      os: ${{ matrix.os }}
+      jdk_distro: "zulu"
+      jdk_version: ${{ matrix.jdk_version }}
+      wolfssl_configure: ${{ matrix.wolfssl_configure }}
+
   # ------------------ Facebook Infer static analysis -------------------
   # Run Facebook infer over PR code, only running on Linux with one
   # JDK/version for now.

.github/workflows/maven.yml

@@ -42,13 +42,17 @@ jobs:
         run: |
           echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$GITHUB_WORKSPACE/build-dir/lib" >> "$GITHUB_ENV"
 
-      # Only copy appropriate makefile for platform currently being tested
+      # Only copy appropriate makefile for platform currently being tested.
+      # Use 'cat > ' rather than 'cp': macOS runners intermittently fail 'cp'
+      # with "fcopyfile failed: Illegal byte sequence" when copyfile() tries to
+      # replicate the source's extended attributes (e.g. com.apple.provenance).
+      # Redirecting content copies only the file data and avoids that path.
       - name: Copy makefile
         run: |
           if [ "$RUNNER_OS" == "Linux" ]; then
-              cp makefile.linux makefile
+              cat makefile.linux > makefile
           elif [ "$RUNNER_OS" == "macOS" ]; then
-              cp makefile.macosx makefile
+              cat makefile.macosx > makefile
           else
             echo "$RUNNER_OS not supported"
             exit 1

.github/workflows/stable-wolfssl-releases.yml

@@ -37,10 +37,16 @@ jobs:
         # it is enabled explicitly. On stable releases older than 5.9.2 the XMSS
         # JUnit tests skip gracefully (FeatureDetect.XmssEnabled() returns
         # false), becoming real coverage once 5.9.2-stable rotates in.
+        # LMS/HSS is verify-only in wolfJCE and is not pulled in by
+        # --enable-all, so it is enabled explicitly. On stable releases that
+        # predate a given LMS parameter family the LMS JUnit tests skip
+        # gracefully (per-hash NOT_COMPILED_IN, or FeatureDetect.LmsEnabled()
+        # returning false).
         wolfssl_configure:
           - '--enable-jni'
           - '--enable-jni --enable-all'
           - '--enable-jni --enable-all --enable-xmss'
+          - '--enable-jni --enable-all --enable-lms'
     name: wolfSSL ${{ matrix.wolfssl_version }} (JDK ${{ matrix.jdk_version }}, ${{ matrix.wolfssl_configure }})
     steps:
       - uses: actions/checkout@v4

IDE/Android/app/src/main/cpp/CMakeLists.txt

@@ -373,6 +373,7 @@ add_library(wolfcryptjni SHARED
         ${wolfcryptjni_DIR}/jni/jni_fips.c
         ${wolfcryptjni_DIR}/jni/jni_hmac.c
         ${wolfcryptjni_DIR}/jni/jni_jce_wolfsslkeystore.c
+        ${wolfcryptjni_DIR}/jni/jni_lms.c
         ${wolfcryptjni_DIR}/jni/jni_logging.c
         ${wolfcryptjni_DIR}/jni/jni_md5.c
         ${wolfcryptjni_DIR}/jni/jni_mldsa.c

IDE/WIN/wolfcryptjni.vcxproj

@@ -96,6 +96,7 @@
     <ClCompile Include="..\..\jni\jni_fips.c" />
     <ClCompile Include="..\..\jni\jni_hmac.c" />
     <ClCompile Include="..\..\jni\jni_jce_wolfsslkeystore.c" />
+    <ClCompile Include="..\..\jni\jni_lms.c" />
     <ClCompile Include="..\..\jni\jni_logging.c" />
     <ClCompile Include="..\..\jni\jni_md5.c" />
     <ClCompile Include="..\..\jni\jni_mldsa.c" />

IDE/WIN/wolfcryptjni.vcxproj.filters

@@ -185,6 +185,9 @@
     <ClCompile Include="..\..\jni\jni_hmac.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\jni\jni_lms.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\jni\jni_logging.c">
       <Filter>Source Files</Filter>
     </ClCompile>

README.md

@@ -55,6 +55,14 @@ signing belongs in hardware (NIST SP 800-208). When `--enable-xmss` is missing
 or the native wolfSSL is older than 5.9.2, wolfJCE still compiles and runs
 normally but the XMSS services are not registered.
 
+**Note on LMS/HSS (RFC 8554):** LMS support is **not** enabled by
+`--enable-jni` alone. Add `--enable-lms` (or `--enable-lms=verify-only`) to the
+native wolfSSL `./configure` line (for the SHAKE256 parameter sets also add
+`--enable-sha3`). wolfJCE provides **verify-only** LMS/HSS support, matching the
+JDK SUN provider: it registers the LMS `Signature` (verification) and
+`KeyFactory` (public-key) services. wolfJCE does not generate LMS keys or sign,
+since stateful hash-based signing belongs in hardware (NIST SP 800-208).
+
 **wolfSSL Standard Build**:
 ```
 $ cd wolfssl-x.x.x

README_JCE.md

@@ -233,6 +233,8 @@ The JCE provider currently supports the following algorithms:
             OID: 1.3.6.1.5.5.7.6.34
         XMSSMT (verify-only)
             OID: 1.3.6.1.5.5.7.6.35
+        LMS (also registered as HSS/LMS)
+            OID: 1.2.840.113549.1.9.16.3.17
 
     KeyAgreement Class
         DiffieHellman
@@ -279,6 +281,7 @@ The JCE provider currently supports the following algorithms:
         ML-KEM-1024 (alias OID: 2.16.840.1.101.3.4.4.3)
         XMSS (verify-only, alias OID: 1.3.6.1.5.5.7.6.34)
         XMSSMT (verify-only, alias OID: 1.3.6.1.5.5.7.6.35)
+        LMS (also HSS/LMS, OID 1.2.840.113549.1.9.16.3.17)
 
     KEM Class (javax.crypto.KEM, requires JDK 21 or later)
         ML-KEM

examples/certs/update-certs.sh

@@ -98,6 +98,10 @@ xmssCertList=(
     "xmss/xmss_root_cert.der"
 )
 
+lmsCertList=(
+    "lms/bc_lms_native_bc_root.der"
+)
+
 for i in ${!certList[@]};
 do
     printf "Updating: ${certList[$i]}\n"
@@ -140,6 +144,22 @@ else
     printf "local copies\n"
 fi
 
+if [ -d "$CERT_LOCATION/lms" ]; then
+    for i in ${!lmsCertList[@]};
+    do
+        printf "Updating: ${lmsCertList[$i]}\n"
+        cp $CERT_LOCATION/${lmsCertList[$i]} ./${lmsCertList[$i]}
+        if [ $? -ne 0 ]; then
+            printf "Warning: skipped missing LMS cert: "
+            printf "${lmsCertList[$i]}\n"
+        fi
+    done
+else
+    printf "Notice: $CERT_LOCATION/lms not found, skipping LMS\n"
+    printf "certs (provided wolfSSL predates them), keeping existing\n"
+    printf "local copies\n"
+fi
+
 # Generate ca-keyPkcs8.der, used by examples/X509CertificateGeneration.java
 openssl pkcs8 -topk8 -inform DER -outform DER -in ca-key.der -out ca-keyPkcs8.der -nocrypt
 if [ $? -ne 0 ]; then

jni/jni_feature_detect.c

@@ -660,7 +660,11 @@ JNIEXPORT jboolean JNICALL Java_com_wolfssl_wolfcrypt_FeatureDetect_LmsEnabled
 {
     (void)env;
     (void)jcl;
-#ifdef WOLFSSL_HAVE_LMS
+    /* wolfCrypt JNI/JCE LMS support requires wolfSSL >= 5.9.2, the first
+     * release providing the wc_LmsKey_GetParameters_ex() hash-family API used
+     * by the LMS JNI layer. Report disabled on older wolfSSL so callers and
+     * tests treat LMS as not compiled in. */
+#if defined(WOLFSSL_HAVE_LMS) && (LIBWOLFSSL_VERSION_HEX >= 0x05009002)
     return JNI_TRUE;
 #else
     return JNI_FALSE;