diff --git a/trunk/c5/arc4.cpp b/trunk/c5/arc4.cpp
index 0beeb24b..b5c27309 100644
--- a/trunk/c5/arc4.cpp
+++ b/trunk/c5/arc4.cpp
@@ -7,11 +7,11 @@
 // completely in the public domain.
 
 #include "pch.h"
-#define CRYPTOPP_ENABLE_NAMESPACE_WEAK
+#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
 #include "arc4.h"
 
 NAMESPACE_BEGIN(CryptoPP)
-namespace Weak {
+namespace Weak1 {
 
 void ARC4_TestInstantiations()
 {
@@ -62,9 +62,10 @@ static inline unsigned int MakeByte(T &x, T &y, byte *s)
 	return s[(a+b) & 0xff];
 }
 
-byte ARC4_Base::GenerateByte()
+void ARC4_Base::GenerateBlock(byte *output, size_t size)
 {
-	return MakeByte(m_x, m_y, m_state);
+	while (size--)
+		*output++ = MakeByte(m_x, m_y, m_state);
 }
 
 void ARC4_Base::ProcessData(byte *outString, const byte *inString, size_t length)
diff --git a/trunk/c5/arc4.h b/trunk/c5/arc4.h
index 1942cafd..9dcc92ef 100644
--- a/trunk/c5/arc4.h
+++ b/trunk/c5/arc4.h
@@ -5,7 +5,7 @@
 
 NAMESPACE_BEGIN(CryptoPP)
 
-namespace Weak {
+namespace Weak1 {
 
 //! _
 class CRYPTOPP_NO_VTABLE ARC4_Base : public VariableKeyLength<16, 1, 256>, public RandomNumberGenerator, public SymmetricCipher, public SymmetricCipherDocumentation
@@ -15,7 +15,7 @@ public:
 
 	static const char *StaticAlgorithmName() {return "ARC4";}
 
-    byte GenerateByte();
+	void GenerateBlock(byte *output, size_t size);
 	void DiscardBytes(size_t n);
 
     void ProcessData(byte *outString, const byte *inString, size_t length);
@@ -55,12 +55,14 @@ protected:
 DOCUMENTED_TYPEDEF(SymmetricCipherFinal<MARC4_Base>, MARC4)
 
 }
-#ifndef CRYPTOPP_ENABLE_NAMESPACE_WEAK
-using namespace Weak;
-#ifdef __GNUC__
-#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please define CRYPTOPP_ENABLE_NAMESPACE_WEAK and prepend the class name with 'Weak::' to remove this warning."
+#if CRYPTOPP_ENABLE_NAMESPACE_WEAK >= 1
+namespace Weak {using namespace Weak1;}		// import Weak1 into CryptoPP::Weak
 #else
-#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please define CRYPTOPP_ENABLE_NAMESPACE_WEAK and prepend the class name with 'Weak::' to remove this warning.")
+using namespace Weak1;	// import Weak1 into CryptoPP with warning
+#ifdef __GNUC__
+#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning."
+#else
+#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning.")
 #endif
 #endif
 
diff --git a/trunk/c5/md2.cpp b/trunk/c5/md2.cpp
index 9e07712f..41f714b5 100644
--- a/trunk/c5/md2.cpp
+++ b/trunk/c5/md2.cpp
@@ -15,11 +15,11 @@
  */
 
 #include "pch.h"
-#define CRYPTOPP_ENABLE_NAMESPACE_WEAK
+#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
 #include "md2.h"
 
 NAMESPACE_BEGIN(CryptoPP)
-namespace Weak {
+namespace Weak1 {
 	
 MD2::MD2()
 	: m_X(48), m_C(16), m_buf(16)
diff --git a/trunk/c5/md2.h b/trunk/c5/md2.h
index 4e8ac4b0..b0837c88 100644
--- a/trunk/c5/md2.h
+++ b/trunk/c5/md2.h
@@ -6,7 +6,7 @@
 
 NAMESPACE_BEGIN(CryptoPP)
 
-namespace Weak {
+namespace Weak1 {
 
 /// <a href="http://www.cryptolounge.org/wiki/MD2">MD2</a>
 class MD2 : public HashTransformation
@@ -30,12 +30,14 @@ private:
 };
 
 }
-#ifndef CRYPTOPP_ENABLE_NAMESPACE_WEAK
-using namespace Weak;
-#ifdef __GNUC__
-#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please define CRYPTOPP_ENABLE_NAMESPACE_WEAK and prepend the class name with 'Weak::' to remove this warning."
+#if CRYPTOPP_ENABLE_NAMESPACE_WEAK >= 1
+namespace Weak {using namespace Weak1;}		// import Weak1 into CryptoPP::Weak
 #else
-#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please define CRYPTOPP_ENABLE_NAMESPACE_WEAK and prepend the class name with 'Weak::' to remove this warning.")
+using namespace Weak1;	// import Weak1 into CryptoPP with warning
+#ifdef __GNUC__
+#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning."
+#else
+#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning.")
 #endif
 #endif
 
diff --git a/trunk/c5/md4.cpp b/trunk/c5/md4.cpp
index f032fc05..9ed639cb 100644
--- a/trunk/c5/md4.cpp
+++ b/trunk/c5/md4.cpp
@@ -15,12 +15,12 @@
  */
 
 #include "pch.h"
-#define CRYPTOPP_ENABLE_NAMESPACE_WEAK
+#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
 #include "md4.h"
 #include "misc.h"
 
 NAMESPACE_BEGIN(CryptoPP)
-namespace Weak {
+namespace Weak1 {
 
 void MD4::InitState(HashWordType *state)
 {
diff --git a/trunk/c5/md4.h b/trunk/c5/md4.h
index d80a3d70..53387003 100644
--- a/trunk/c5/md4.h
+++ b/trunk/c5/md4.h
@@ -5,7 +5,7 @@
 
 NAMESPACE_BEGIN(CryptoPP)
 
-namespace Weak {
+namespace Weak1 {
 
 //! <a href="http://www.weidai.com/scan-mirror/md.html#MD4">MD4</a>
 /*! \warning MD4 is considered insecure, and should not be used
@@ -19,12 +19,14 @@ public:
 };
 
 }
-#ifndef CRYPTOPP_ENABLE_NAMESPACE_WEAK
-using namespace Weak;
-#ifdef __GNUC__
-#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please define CRYPTOPP_ENABLE_NAMESPACE_WEAK and prepend the class name with 'Weak::' to remove this warning."
+#if CRYPTOPP_ENABLE_NAMESPACE_WEAK >= 1
+namespace Weak {using namespace Weak1;}		// import Weak1 into CryptoPP::Weak
 #else
-#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please define CRYPTOPP_ENABLE_NAMESPACE_WEAK and prepend the class name with 'Weak::' to remove this warning.")
+using namespace Weak1;	// import Weak1 into CryptoPP with warning
+#ifdef __GNUC__
+#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning."
+#else
+#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning.")
 #endif
 #endif
 
diff --git a/trunk/c5/md5.cpp b/trunk/c5/md5.cpp
index 839d0191..a5229781 100644
--- a/trunk/c5/md5.cpp
+++ b/trunk/c5/md5.cpp
@@ -2,12 +2,12 @@
 // any modifications are placed in the public domain
 
 #include "pch.h"
-#define CRYPTOPP_ENABLE_NAMESPACE_WEAK
+#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
 #include "md5.h"
 #include "misc.h"
 
 NAMESPACE_BEGIN(CryptoPP)
-namespace Weak {
+namespace Weak1 {
 
 void MD5_TestInstantiations()
 {
diff --git a/trunk/c5/md5.h b/trunk/c5/md5.h
index 944a4eec..73ec5326 100644
--- a/trunk/c5/md5.h
+++ b/trunk/c5/md5.h
@@ -5,7 +5,7 @@
 
 NAMESPACE_BEGIN(CryptoPP)
 
-namespace Weak {
+namespace Weak1 {
 
 //! <a href="http://www.cryptolounge.org/wiki/MD5">MD5</a>
 class MD5 : public IteratedHashWithStaticTransform<word32, LittleEndian, 64, 16, MD5>
@@ -17,12 +17,14 @@ public:
 };
 
 }
-#ifndef CRYPTOPP_ENABLE_NAMESPACE_WEAK
-using namespace Weak;
-#ifdef __GNUC__
-#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please define CRYPTOPP_ENABLE_NAMESPACE_WEAK and prepend the class name with 'Weak::' to remove this warning."
+#if CRYPTOPP_ENABLE_NAMESPACE_WEAK >= 1
+namespace Weak {using namespace Weak1;}		// import Weak1 into CryptoPP::Weak
 #else
-#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please define CRYPTOPP_ENABLE_NAMESPACE_WEAK and prepend the class name with 'Weak::' to remove this warning.")
+using namespace Weak1;	// import Weak1 into CryptoPP with warning
+#ifdef __GNUC__
+#warning "You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning."
+#else
+#pragma message("You may be using a weak algorithm that has been retained for backwards compatibility. Please '#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1' before including this .h file and prepend the class name with 'Weak::' to remove this warning.")
 #endif
 #endif
 
diff --git a/trunk/c5/pkcspad.cpp b/trunk/c5/pkcspad.cpp
index 0ce0aa55..e1f1d1e2 100644
--- a/trunk/c5/pkcspad.cpp
+++ b/trunk/c5/pkcspad.cpp
@@ -11,11 +11,11 @@
 NAMESPACE_BEGIN(CryptoPP)
 
 // more in dll.cpp
-template<> const byte PKCS_DigestDecoration<Weak::MD2>::decoration[] = {0x30,0x20,0x30,0x0c,0x06,0x08,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x02,0x02,0x05,0x00,0x04,0x10};
-template<> const unsigned int PKCS_DigestDecoration<Weak::MD2>::length = sizeof(PKCS_DigestDecoration<Weak::MD2>::decoration);
+template<> const byte PKCS_DigestDecoration<Weak1::MD2>::decoration[] = {0x30,0x20,0x30,0x0c,0x06,0x08,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x02,0x02,0x05,0x00,0x04,0x10};
+template<> const unsigned int PKCS_DigestDecoration<Weak1::MD2>::length = sizeof(PKCS_DigestDecoration<Weak1::MD2>::decoration);
 
-template<> const byte PKCS_DigestDecoration<Weak::MD5>::decoration[] = {0x30,0x20,0x30,0x0c,0x06,0x08,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x02,0x05,0x05,0x00,0x04,0x10};
-template<> const unsigned int PKCS_DigestDecoration<Weak::MD5>::length = sizeof(PKCS_DigestDecoration<Weak::MD5>::decoration);
+template<> const byte PKCS_DigestDecoration<Weak1::MD5>::decoration[] = {0x30,0x20,0x30,0x0c,0x06,0x08,0x2a,0x86,0x48,0x86,0xf7,0x0d,0x02,0x05,0x05,0x00,0x04,0x10};
+template<> const unsigned int PKCS_DigestDecoration<Weak1::MD5>::length = sizeof(PKCS_DigestDecoration<Weak1::MD5>::decoration);
 
 template<> const byte PKCS_DigestDecoration<RIPEMD160>::decoration[] = {0x30,0x21,0x30,0x09,0x06,0x05,0x2b,0x24,0x03,0x02,0x01,0x05,0x00,0x04,0x14};
 template<> const unsigned int PKCS_DigestDecoration<RIPEMD160>::length = sizeof(PKCS_DigestDecoration<RIPEMD160>::decoration);
diff --git a/trunk/c5/pkcspad.h b/trunk/c5/pkcspad.h
index 4d890890..6371c769 100644
--- a/trunk/c5/pkcspad.h
+++ b/trunk/c5/pkcspad.h
@@ -37,7 +37,7 @@ class SHA224;
 class SHA256;
 class SHA384;
 class SHA512;
-namespace Weak {
+namespace Weak1 {
 class MD2;
 class MD5;
 }
diff --git a/trunk/c5/rsa.h b/trunk/c5/rsa.h
index debaa447..6a8b1852 100644
--- a/trunk/c5/rsa.h
+++ b/trunk/c5/rsa.h
@@ -162,11 +162,11 @@ typedef RSASS<PKCS1v15, SHA>::Signer RSASSA_PKCS1v15_SHA_Signer;
 typedef RSASS<PKCS1v15, SHA>::Verifier RSASSA_PKCS1v15_SHA_Verifier;
 
 namespace Weak {
-typedef RSASS<PKCS1v15, MD2>::Signer RSASSA_PKCS1v15_MD2_Signer;
-typedef RSASS<PKCS1v15, MD2>::Verifier RSASSA_PKCS1v15_MD2_Verifier;
+typedef RSASS<PKCS1v15, Weak1::MD2>::Signer RSASSA_PKCS1v15_MD2_Signer;
+typedef RSASS<PKCS1v15, Weak1::MD2>::Verifier RSASSA_PKCS1v15_MD2_Verifier;
 
-typedef RSASS<PKCS1v15, MD5>::Signer RSASSA_PKCS1v15_MD5_Signer;
-typedef RSASS<PKCS1v15, MD5>::Verifier RSASSA_PKCS1v15_MD5_Verifier;
+typedef RSASS<PKCS1v15, Weak1::MD5>::Signer RSASSA_PKCS1v15_MD5_Signer;
+typedef RSASS<PKCS1v15, Weak1::MD5>::Verifier RSASSA_PKCS1v15_MD5_Verifier;
 }
 
 NAMESPACE_END