more strobe modes

include/shake.h

@@ -249,6 +249,7 @@ void spongerng_stir (
     size_t len
 ) NONNULL2 API_VIS;
 
+extern const struct kparams_s STROBE_128 API_VIS;
 extern const struct kparams_s STROBE_256 API_VIS;
 extern const struct kparams_s STROBE_KEYED_128 API_VIS;
 extern const struct kparams_s STROBE_KEYED_256 API_VIS;

src/shake.c

@@ -447,6 +447,7 @@ int spongerng_init_from_dev_urandom (
     return spongerng_init_from_file(sponge, "/dev/urandom", 64, 0);
 }
 
+const struct kparams_s STROBE_128 = { 0, 0, 200-128/4, 0, 0, 0, 0, 0 };
 const struct kparams_s STROBE_256 = { 0, 0, 200-256/4, 0, 0, 0, 0, 0 };
 const struct kparams_s STROBE_KEYED_256 = { 0, 0, 200-256/4, 12, 0, 0, 0, 0 };
 const struct kparams_s STROBE_KEYED_128 = { 0, 0, 200-128/4, 12, 0, 0, 0, 0 };

test/bench_decaf.cxx

@@ -273,11 +273,20 @@ int main(int argc, char **argv) {
         for (Benchmark b("SHAKE256 1kiB", 30); b.iter(); ) { shake2 += TmpBuffer(b1024,1024); }
         for (Benchmark b("SHA3-512 1kiB", 30); b.iter(); ) { sha5 += TmpBuffer(b1024,1024); }
         strobe.key(TmpBuffer(b1024,1024));
-        for (Benchmark b("STROBE256 1kiB", 30); b.iter(); ) {
+        strobe.respec(STROBE_128);
+        for (Benchmark b("STROBE128 1kiB", 10); b.iter(); ) {
+            strobe.encrypt_no_auth(TmpBuffer(b1024,1024),TmpBuffer(b1024,1024),b.i>1);
+        }
+        strobe.respec(STROBE_256);
+        for (Benchmark b("STROBE256 1kiB", 10); b.iter(); ) {
             strobe.encrypt_no_auth(TmpBuffer(b1024,1024),TmpBuffer(b1024,1024),b.i>1);
         }
         strobe.respec(STROBE_KEYED_128);
-        for (Benchmark b("STROBEk128 1kiB", 30); b.iter(); ) {
+        for (Benchmark b("STROBEk128 1kiB", 10); b.iter(); ) {
+            strobe.encrypt_no_auth(TmpBuffer(b1024,1024),TmpBuffer(b1024,1024),b.i>1);
+        }
+        strobe.respec(STROBE_KEYED_256);
+        for (Benchmark b("STROBEk256 1kiB", 10); b.iter(); ) {
             strobe.encrypt_no_auth(TmpBuffer(b1024,1024),TmpBuffer(b1024,1024),b.i>1);
         }
         for (Benchmark b("Scalar add", 1000); b.iter(); ) { s+=t; }