1 files changed, 83 insertions, 0 deletions

diff --git a/nacl/crypto_sign/measure.c b/nacl/crypto_sign/measure.c
new file mode 100644
index 00000000..8d8495a8
--- /dev/null
+++ b/nacl/crypto_sign/measure.c
@@ -0,0 +1,83 @@
+#include <stdlib.h>
+#include "randombytes.h"
+#include "cpucycles.h"
+#include "crypto_sign.h"
+
+extern void printentry(long long,const char *,long long *,long long);
+extern unsigned char *alignedcalloc(unsigned long long);
+extern const char *primitiveimplementation;
+extern const char *implementationversion;
+extern const char *sizenames[];
+extern const long long sizes[];
+extern void allocate(void);
+extern void measure(void);
+
+const char *primitiveimplementation = crypto_sign_IMPLEMENTATION;
+const char *implementationversion = crypto_sign_VERSION;
+const char *sizenames[] = { "outputbytes", "publickeybytes", "secretkeybytes", 0 };
+const long long sizes[] = { crypto_sign_BYTES, crypto_sign_PUBLICKEYBYTES, crypto_sign_SECRETKEYBYTES };
+
+#define MAXTEST_BYTES 100000
+
+static unsigned char *pk;
+static unsigned char *sk;
+static unsigned char *m; unsigned long long mlen;
+static unsigned char *sm; unsigned long long smlen;
+static unsigned char *t; unsigned long long tlen;
+
+void preallocate(void)
+{
+#ifdef RAND_R_PRNG_NOT_SEEDED
+  RAND_status();
+#endif
+}
+
+void allocate(void)
+{
+  pk = alignedcalloc(crypto_sign_PUBLICKEYBYTES);
+  sk = alignedcalloc(crypto_sign_SECRETKEYBYTES);
+  m = alignedcalloc(MAXTEST_BYTES + crypto_sign_BYTES);
+  sm = alignedcalloc(MAXTEST_BYTES + crypto_sign_BYTES);
+  t = alignedcalloc(MAXTEST_BYTES + crypto_sign_BYTES);
+}
+
+#define TIMINGS 31
+static long long cycles[TIMINGS + 1];
+static long long bytes[TIMINGS + 1];
+
+void measure(void)
+{
+  int i;
+  int loop;
+
+  for (loop = 0;loop < LOOPS;++loop) {
+    for (i = 0;i <= TIMINGS;++i) {
+      cycles[i] = cpucycles();
+      crypto_sign_keypair(pk,sk);
+    }
+    for (i = 0;i < TIMINGS;++i) cycles[i] = cycles[i + 1] - cycles[i];
+    printentry(-1,"keypair_cycles",cycles,TIMINGS);
+
+    for (mlen = 0;mlen <= MAXTEST_BYTES;mlen += 1 + mlen / 4) {
+      randombytes(m,mlen);
+
+      for (i = 0;i <= TIMINGS;++i) {
+        cycles[i] = cpucycles();
+        bytes[i] = crypto_sign(sm,&smlen,m,mlen,sk);
+        if (bytes[i] == 0) bytes[i] = smlen;
+      }
+      for (i = 0;i < TIMINGS;++i) cycles[i] = cycles[i + 1] - cycles[i];
+      printentry(mlen,"cycles",cycles,TIMINGS);
+      printentry(mlen,"bytes",bytes,TIMINGS);
+
+      for (i = 0;i <= TIMINGS;++i) {
+        cycles[i] = cpucycles();
+        bytes[i] = crypto_sign_open(t,&tlen,sm,smlen,pk);
+        if (bytes[i] == 0) bytes[i] = tlen;
+      }
+      for (i = 0;i < TIMINGS;++i) cycles[i] = cycles[i + 1] - cycles[i];
+      printentry(mlen,"open_cycles",cycles,TIMINGS);
+      printentry(mlen,"open_bytes",bytes,TIMINGS);
+    }
+  }
+}