From de6e367b5b652335d1dc6435b6bbef9b64a748a7 Mon Sep 17 00:00:00 2001
From: weidai <weidai@57ff6487-cd31-0410-9ec3-f628ee90f5f0>
Date: Tue, 29 Jun 2010 01:11:47 +0000
Subject: use GlobalRNG(), improved benchmarking of
 AuthenticatedSymmetricCipher

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@493 57ff6487-cd31-0410-9ec3-f628ee90f5f0
---
 bench.cpp | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

(limited to 'bench.cpp')

diff --git a/bench.cpp b/bench.cpp
index 537caff..cee316c 100644
--- a/bench.cpp
+++ b/bench.cpp
@@ -3,9 +3,9 @@
 #define _CRT_SECURE_NO_DEPRECATE
 
 #include "bench.h"
+#include "validate.h"
 #include "aes.h"
 #include "blumshub.h"
-#include "rng.h"
 #include "files.h"
 #include "hex.h"
 #include "modes.h"
@@ -96,6 +96,7 @@ void BenchMark(const char *name, StreamTransformation &cipher, double timeTotal)
 {
 	const int BUF_SIZE=RoundUpToMultipleOf(2048U, cipher.OptimalBlockSize());
 	AlignedSecByteBlock buf(BUF_SIZE);
+	GlobalRNG().GenerateBlock(buf, BUF_SIZE);
 	clock_t start = clock();
 
 	unsigned long i=0, blocks=1;
@@ -112,12 +113,19 @@ void BenchMark(const char *name, StreamTransformation &cipher, double timeTotal)
 	OutputResultBytes(name, double(blocks) * BUF_SIZE, timeTaken);
 }
 
+void BenchMark(const char *name, AuthenticatedSymmetricCipher &cipher, double timeTotal)
+{
+	if (cipher.NeedsPrespecifiedDataLengths())
+		cipher.SpecifyDataLengths(0, cipher.MaxMessageLength(), 0);
+
+	BenchMark(name, static_cast<StreamTransformation &>(cipher), timeTotal);
+}
+
 void BenchMark(const char *name, HashTransformation &ht, double timeTotal)
 {
 	const int BUF_SIZE=2048U;
 	AlignedSecByteBlock buf(BUF_SIZE);
-	LC_RNG rng((word32)time(NULL));
-	rng.GenerateBlock(buf, BUF_SIZE);
+	GlobalRNG().GenerateBlock(buf, BUF_SIZE);
 	clock_t start = clock();
 
 	unsigned long i=0, blocks=1;
@@ -138,8 +146,7 @@ void BenchMark(const char *name, BufferedTransformation &bt, double timeTotal)
 {
 	const int BUF_SIZE=2048U;
 	AlignedSecByteBlock buf(BUF_SIZE);
-	LC_RNG rng((word32)time(NULL));
-	rng.GenerateBlock(buf, BUF_SIZE);
+	GlobalRNG().GenerateBlock(buf, BUF_SIZE);
 	clock_t start = clock();
 
 	unsigned long i=0, blocks=1;
@@ -235,10 +242,10 @@ void BenchmarkAll(double t, double hertz)
 	cout << "<THEAD><TR><TH>Algorithm<TH>MiB/Second" << cpb << "<TH>Microseconds to<br>Setup Key and IV" << cpk << endl;
 
 	cout << "\n<TBODY style=\"background: yellow\">";
-	BenchMarkByName2<AuthenticatedSymmetricCipher, StreamTransformation>("AES/GCM", 0, "AES/GCM (2K tables)", MakeParameters(Name::TableSize(), 2048));
-	BenchMarkByName2<AuthenticatedSymmetricCipher, StreamTransformation>("AES/GCM", 0, "AES/GCM (64K tables)", MakeParameters(Name::TableSize(), 64*1024));
-	BenchMarkByName2<AuthenticatedSymmetricCipher, StreamTransformation>("AES/CCM");
-	BenchMarkByName2<AuthenticatedSymmetricCipher, StreamTransformation>("AES/EAX");
+	BenchMarkByName2<AuthenticatedSymmetricCipher, AuthenticatedSymmetricCipher>("AES/GCM", 0, "AES/GCM (2K tables)", MakeParameters(Name::TableSize(), 2048));
+	BenchMarkByName2<AuthenticatedSymmetricCipher, AuthenticatedSymmetricCipher>("AES/GCM", 0, "AES/GCM (64K tables)", MakeParameters(Name::TableSize(), 64*1024));
+	BenchMarkByName2<AuthenticatedSymmetricCipher, AuthenticatedSymmetricCipher>("AES/CCM");
+	BenchMarkByName2<AuthenticatedSymmetricCipher, AuthenticatedSymmetricCipher>("AES/EAX");
 
 	cout << "\n<TBODY style=\"background: white\">";
 	BenchMarkByName2<AuthenticatedSymmetricCipher, MessageAuthenticationCode>("AES/GCM", 0, "GMAC(AES) (2K tables)", MakeParameters(Name::TableSize(), 2048));
-- 
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