Fix slh-dsa-sha2-128s bugs.

diff --git a/slh-dsa-sha2-128s.c b/slh-dsa-sha2-128s.c
index 25db823cc0c1a08a1807457ed3f16540e2d4e7fe..bdfe8c1b6edced37187ffb296d13d27f306235ab 100644 (file)
--- a/slh-dsa-sha2-128s.c
+++ b/slh-dsa-sha2-128s.c
@@ -47,7 +47,7 @@ slh_dsa_sha2_128s_root (const uint8_t *public_seed, const uint8_t *private_seed,
                        uint8_t *root)
 {
   uint8_t scratch[(XMSS_H + 1)*_SLH_DSA_128_SIZE];
-  _xmss_gen (&_slh_hash_shake, public_seed, private_seed,
+  _xmss_gen (&_slh_hash_sha256, public_seed, private_seed,
             &_slh_dsa_128s_params.xmss, scratch, root);
 }
 
@@ -71,7 +71,7 @@ slh_dsa_sha2_128s_sign (const uint8_t *pub, const uint8_t *priv,
                         pub, priv + _SLH_DSA_128_SIZE, length, msg,
                         signature, sizeof (digest), digest);
   _slh_dsa_sign (&_slh_dsa_128s_params, &_slh_hash_sha256,
-                pub, priv, digest, signature);
+                pub, priv, digest, signature + _SLH_DSA_128_SIZE);
 }
 
 int
@@ -83,5 +83,5 @@ slh_dsa_sha2_128s_verify (const uint8_t *pub,
   _slh_dsa_pure_digest (&_slh_hash_sha256,
                        pub, length, msg, signature, sizeof (digest), digest);
   return _slh_dsa_verify (&_slh_dsa_128s_params, &_slh_hash_sha256,
-                         pub, digest, signature);
+                         pub, digest, signature + _SLH_DSA_128_SIZE);
 }

diff --git a/slh-sha256.c b/slh-sha256.c
index cc6da355f3cd64c20f63d3decf7cc28011265fc2..6c96e8e4e1c5776d6d0e74ee2d3ec620cf1dc7d0 100644 (file)
--- a/slh-sha256.c
+++ b/slh-sha256.c
@@ -146,6 +146,8 @@ slh_sha256_msg_digest (const uint8_t *randomizer, const uint8_t *pub,
   for (i = 0; digest_size > 0; i++)
     {
       uint32_t i_be = bswap32_if_le (i);
+      sha256_update (&ctx, _SLH_DSA_128_SIZE, randomizer);
+      sha256_update (&ctx, _SLH_DSA_128_SIZE, pub);
       sha256_update (&ctx, sizeof (inner), inner);
       sha256_update (&ctx, sizeof (i_be), (const uint8_t *) &i_be);
       if (digest_size < SHA256_DIGEST_SIZE)

diff --git a/testsuite/Makefile.in b/testsuite/Makefile.in
index 3914ec4baa653b9753f6ac9e7d73e95d9fa08a6d..076ac6a93b49e44cdff27f0c4169ad3148ac077c 100644 (file)
--- a/testsuite/Makefile.in
+++ b/testsuite/Makefile.in
@@ -97,7 +97,8 @@ DISTFILES = $(SOURCES) $(CXX_SOURCES) Makefile.in \
            $(TS_SH) $(TS_SC_NETTLE) $(TS_SC_HOGWEED) sc-valgrind.sh testutils.h sha3.awk \
            gold-bug.txt slh-dsa-shake-128s.ref slh-dsa-shake-128f.ref \
            slh-dsa-shake-128f-tc64.msg slh-dsa-shake-128f-tc64.sig \
-           slh-dsa-shake-128s-tc215.msg slh-dsa-shake-128s-tc215.sig
+           slh-dsa-shake-128s-tc215.msg slh-dsa-shake-128s-tc215.sig \
+           slh-dsa-sha2-128s-tc162.msg slh-dsa-sha2-128s-tc162.sig
 
 all: $(EXTRA_TARGETS)
 

diff --git a/testsuite/slh-dsa-sha2-128s-tc162.msg b/testsuite/slh-dsa-sha2-128s-tc162.msg
new file mode 100644 (file)
index 0000000..d1ae81c
--- /dev/null
+++ b/testsuite/slh-dsa-sha2-128s-tc162.msg
@@ -0,0 +1,180 @@
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diff --git a/testsuite/slh-dsa-sha2-128s-tc162.sig b/testsuite/slh-dsa-sha2-128s-tc162.sig
new file mode 100644 (file)
index 0000000..ab7736c
--- /dev/null
+++ b/testsuite/slh-dsa-sha2-128s-tc162.sig
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diff --git a/testsuite/slh-dsa-test.c b/testsuite/slh-dsa-test.c
index cab0a75c5638ac98cac4a559e5ef1feabd56e641..058e5d04f3b766f6942b95779b833797c8061150 100644 (file)
--- a/testsuite/slh-dsa-test.c
+++ b/testsuite/slh-dsa-test.c
@@ -88,7 +88,7 @@ read_hex_file (const char *name, size_t max_size)
          if (done == s->length)
            {
              fprintf (stderr, "hex file %s exceeds maximum size %ld\n",
-                      name, (long) s->length);
+                      name, (long) s->length - 1);
              FAIL ();
            }
        }
@@ -341,6 +341,15 @@ slh_dsa_shake_128f = {
   slh_dsa_shake_128f_verify,
 };
 
+static const struct slh_dsa_alg
+slh_dsa_sha2_128s = {
+  "slh_dsa_sha2_128s",
+  SLH_DSA_128_KEY_SIZE,
+  SLH_DSA_128S_SIGNATURE_SIZE,
+  slh_dsa_sha2_128s_sign,
+  slh_dsa_sha2_128s_verify,
+};
+
 static void
 test_slh_dsa (const struct slh_dsa_alg *alg,
              const struct tstring *pub, const struct tstring *priv,
@@ -566,6 +575,11 @@ test_main (void)
 
   /* From
      https://github.com/usnistgov/ACVP-Server/blob/master/gen-val/json-files/SLH-DSA-keyGen-FIPS205/internalProjection.json */
+  test_slh_dsa_128_root (slh_dsa_sha2_128s_root, /* tcId 1 */
+                        SHEX ("0D794777914C99766827F0F09CA972BE"),
+                        SHEX ("173D04C938C1C36BF289C3C022D04B14"),
+                        SHEX ("0162C10219D422ADBA1359E6AA65299C"));
+
   test_slh_dsa_128_root (slh_dsa_shake_128s_root, /* tcId 11 */
                         SHEX ("529FFE86200D1F32C2B60D0CD909F190"),
                         SHEX ("C151951F3811029239B74ADD24C506AF"),
@@ -604,7 +618,7 @@ test_main (void)
                SHEX ("D81C4D8D734FCBFB EADE3D3F8A039FAA"
                      "2A2C9957E835AD55 B22E75BF57BB556A"
                      "C8"),
-               read_hex_file ("slh-dsa-shake-128s.ref", SLH_DSA_SHAKE_128S_SIGNATURE_SIZE));
+               read_hex_file ("slh-dsa-shake-128s.ref", SLH_DSA_128S_SIGNATURE_SIZE));
 
   /* Test vector from
      https://github.com/smuellerDD/leancrypto/blob/master/slh-dsa/tests/sphincs_tester_vectors_shake_128f.h */
@@ -616,7 +630,7 @@ test_main (void)
                SHEX ("D81C4D8D734FCBFB EADE3D3F8A039FAA"
                      "2A2C9957E835AD55 B22E75BF57BB556A"
                      "C8"),
-               read_hex_file ("slh-dsa-shake-128f.ref", SLH_DSA_SHAKE_128F_SIGNATURE_SIZE));
+               read_hex_file ("slh-dsa-shake-128f.ref", SLH_DSA_128F_SIGNATURE_SIZE));
 
   /* From
      https://raw.githubusercontent.com/usnistgov/ACVP-Server/refs/heads/master/gen-val/json-files/SLH-DSA-sigGen-FIPS205/internalProjection.json: */
@@ -624,11 +638,17 @@ test_main (void)
                SHEX ("C9A7900E931AFBA2B52A5BC55A2DC4D12DDC9BF8E0B2ED0BDE83E674F1ECE7AA"),
                SHEX ("0E87FF20256E0E499A53B52DF91467C01F0431C07250AFE93DE814117B5D66D3"),
                read_hex_file ("slh-dsa-shake-128f-tc64.msg", 2280),
-               read_hex_file ("slh-dsa-shake-128f-tc64.sig", SLH_DSA_SHAKE_128F_SIGNATURE_SIZE));
+               read_hex_file ("slh-dsa-shake-128f-tc64.sig", SLH_DSA_128F_SIGNATURE_SIZE));
+
+  test_slh_dsa (&slh_dsa_sha2_128s, /* tcId 162 */
+               SHEX ("0FD12C3F990748CF9B1426413B64128EDF9242E50B9E29378BD24CAD4D547540"),
+               SHEX ("438E444071BD643C2407BD9FEB0071EC21DAA14113518133D6161EF420EE629D"),
+               read_hex_file ("slh-dsa-sha2-128s-tc162.msg", 5746),
+               read_hex_file ("slh-dsa-sha2-128s-tc162.sig", SLH_DSA_128S_SIGNATURE_SIZE));
 
   test_slh_dsa (&slh_dsa_shake_128s, /* tcId 215 */
                SHEX ("DD286FF370CB50BC1B23894AA3F7025A534A788E697B94942AB845EFB753A30B"),
                SHEX ("4738AC60C561FFBE15AB96EFFA1A09291A79332E1CA3C38B2FEF40ACA7CFE285"),
                read_hex_file ("slh-dsa-shake-128s-tc215.msg", 5377),
-               read_hex_file ("slh-dsa-shake-128s-tc215.sig", SLH_DSA_SHAKE_128S_SIGNATURE_SIZE));
+               read_hex_file ("slh-dsa-shake-128s-tc215.sig", SLH_DSA_128S_SIGNATURE_SIZE));
 }