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Re: Using openssl functions on U++ [message #13118 is a reply to message #13117]

Thu, 13 December 2007 09:32

Zardos
Messages: 62
Registered: April 2007

Member

ealabarce wrote on Thu, 13 December 2007 06:30

Thanks Ralf, i have a cuestion, the two projects are the class, or I only need the CryptOpenSsl.zip one, or the UnitTest.zip is part of the class, now, to use the class i need only a declaration like "Rsa Firma;", like other classes and then access to the methods. because im doing this:

You can leave out the UnitTest package. I just attached it to make the CryptOpenSsl compile.

If you remove the UnitTest remove

#ifdef _DEBUG
TEST(Rsa) {
	Rsa rsa;
	rsa.GenerateKeyPair(512);
	
	String pri = rsa.PrivateKeyToPem();
	String pub = rsa.PublicKeyToPem();

	Rsa rsa2;
	rsa2.PrivateKeyFromPem(pri);

	String pri2 = rsa2.PrivateKeyToPem();
	String pub2 = rsa.PublicKeyToPem();	

	CHECK(pri == pri2);
	CHECK(pub == pub2);
	CHECK(rsa.VerifySHA("Kleiner Test", rsa2.SignSHA("Kleiner Test")));
	CHECK(rsa.Decrypt(rsa2.Encrypt("Kleiner Test")) == "Kleiner Test");
	CHECK(!rsa.VerifySHA("Kleiner Test", rsa2.SignSHA("@Kleiner Test")));
}
#endif

...from CryptOpenSsl.cpp

and

#include <UnitTest/UnitTest.h>

from CryptOpenSsl.h

Quote:

But when I compile the project, the compiler show me this error:

C:\ElectroFactUPP\firmafactSAT_GUI\main.cpp: In member function `void firmafactSAT_GUI::CargarSe
llo()':
C:\ElectroFactUPP\firmafactSAT_GUI\main.cpp:53: error: `rsa' undeclared (first use this function
)

I need to put a include to a some file?

Thanks for the help...

add:

#include <openssl/md5.h>

to CryptOpenSsl.h

The .h file now looks like this (UnitTest.h is still included - remove it if you want. See note above):

#ifndef _CryptOpenSsl_CryptOpenSsl_h_
#define _CryptOpenSsl_CryptOpenSsl_h_

// ---------------------------------------------------------------------------------------------

#include <Core/Core.h>
#include <UnitTest/UnitTest.h>

 #define OPENSSL_THREAD_DEFINES
 #include <openssl/opensslconf.h>
 #if !defined(OPENSSL_THREADS)
 @@@
 #endif
 
#include <openssl/rsa.h>
#include <openssl/md5.h>
#include <openssl/engine.h>
#include <openssl/pem.h>

using namespace Upp;

// ---------------------------------------------------------------------------------------------

String ToString(BIGNUM *b);
BIGNUM * ToBigNum(String& str);
String ToString(BIO *bp);
BIO * ToBIO(String &str);

// ---------------------------------------------------------------------------------------------

struct Rsa : public Moveable<Rsa> {
	Rsa() { rsa = NULL; }
	~Rsa() { if(rsa) RSA_free(rsa); }
	
	void GenerateKeyPair(int bits = 1024, int exponent = 17);

	String PrivateKeyToPem();
	String PublicKeyToPem();
	void PrivateKeyFromPem(const String &pem);
	void PrivateKeyFromPem(uint8 *d, int l);
	void PublicKeyFromPem(const String &pem);
	void PublicKeyFromPem(uint8 *d, int l);
		
	String SignSHA(const String &msg);
	String SignMD5(const String &msg);  // Added by me
	String Decrypt(const String &msg, int padding = RSA_PKCS1_OAEP_PADDING);
	
	bool VerifySHA(const String &msg, const String &sig);
	bool VerifyMD5(const String &msg, const String &sig); // Added by me
	String Encrypt(const String &msg, int padding = RSA_PKCS1_OAEP_PADDING);
		
	int MaxMsgCount(int padding = RSA_PKCS1_OAEP_PADDING);
	
	void Serialize(Stream &s);
	
protected:
	RSA *rsa;
};

// ---------------------------------------------------------------------------------------------

#endif

- Ralf

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