Changeset 52297 in vbox for trunk/src/VBox/Runtime/testcase

Timestamp:

Aug 6, 2014 2:43:28 PM (11 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

95409

Message:

tstRTBigNum: compare with openssl. (Conclusion, we're very slow at modexp.)

Location:

trunk/src/VBox/Runtime/testcase

Files:

• Makefile.kmk (modified) (1 diff)
• tstRTBigNum.cpp (modified) (2 diffs)

trunk/src/VBox/Runtime/testcase/Makefile.kmk

@@ -227 +227 @@
 tstRTBigNum_TEMPLATE = VBOXR3TSTEXE
 tstRTBigNum_SOURCES = tstRTBigNum.cpp
+tstRTBigNum_SDKS = VBOX_OPENSSL
 
 tstRTBitOperations_TEMPLATE = VBOXR3TSTEXE

trunk/src/VBox/Runtime/testcase/tstRTBigNum.cpp

@@ -34 +34 @@
 #include <iprt/time.h>
 #include <iprt/string.h>
+
+#if 1
+# include <openssl/bn.h>
+#endif
 
 
@@ -865 +869 @@
     RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
     RTTestIValue("RTBigNumModExp", uElapsed / cRounds, RTTESTUNIT_NS_PER_CALL);
+
+#if 1
+    /* Compare with OpenSSL BN. */
+    BN_CTX *pObnCtx = BN_CTX_new();
+    BIGNUM *pObnPubKeyExp = BN_bin2bn(s_abPubKeyExp, sizeof(s_abPubKeyExp), NULL);
+    BIGNUM *pObnPubKeyMod = BN_bin2bn(s_abPubKeyMod, sizeof(s_abPubKeyMod), NULL);
+    BIGNUM *pObnSignature = BN_bin2bn(s_abSignature, sizeof(s_abSignature), NULL);
+    BIGNUM *pObnResult = BN_new();
+    RTTESTI_CHECK_RETV(BN_mod_exp(pObnResult, pObnSignature, pObnPubKeyExp, pObnPubKeyMod, pObnCtx) == 1);
+    BN_CTX_free(pObnCtx);
+
+    rc = 1;
+    cRounds  = 0;
+    uStartTS = RTTimeNanoTS();
+    while (cRounds < 4096)
+    {
+        pObnCtx = BN_CTX_new();
+        rc &= BN_mod_exp(pObnResult, pObnSignature, pObnPubKeyExp, pObnPubKeyMod, pObnCtx);
+        BN_CTX_free(pObnCtx);
+        cRounds++;
+    }
+    uElapsed = RTTimeNanoTS() - uStartTS;
+    RTTESTI_CHECK_RC(rc, 1);
+    RTTestIValue("BN_mod_exp", uElapsed / cRounds, RTTESTUNIT_NS_PER_CALL);
+
+    rc = 1;
+    cRounds  = 0;
+    uStartTS = RTTimeNanoTS();
+    while (cRounds < 4096)
+    {
+        pObnCtx = BN_CTX_new();
+        rc &= BN_mod_exp_simple(pObnResult, pObnSignature, pObnPubKeyExp, pObnPubKeyMod, pObnCtx);
+        BN_CTX_free(pObnCtx);
+        cRounds++;
+    }
+    uElapsed = RTTimeNanoTS() - uStartTS;
+    RTTESTI_CHECK_RC(rc, 1);
+    RTTestIValue("BN_mod_exp_simple", uElapsed / cRounds, RTTESTUNIT_NS_PER_CALL);
+#endif
 }