asked on

CALG_AES_256 vc++ 6.0

I am ahving errors
C:\Documents and Settings\hariere\Desktop\testcrypto\testcrypto.cpp(67) : error C2065: 'PROV_RSA_AES' : undeclared identifier
C:\Documents and Settings\hariere\Desktop\testcrypto\testcrypto.cpp(101) : error C2065: 'CALG_AES_256' : undeclared identifier
Error executing cl.exe.
Please help where i am worng

// testcrypto.cpp : Defines the entry point for the console application.
//
 
 
#include "stdafx.h"
#include <windows.h>
#include<string.h>
#include <cstring>
 
#include <stdio.h>
#include <stdlib.h>
#include <wincrypt.h>
#include<malloc.h>
 
#ifdef USE_BLOCK_CIPHER
    // defines for RC2 block cipher
    #define ENCRYPT_ALGORITHM      CALG_RC2
    #define ENCRYPT_BLOCK_SIZE      8
#else
    // defines for RC4 stream cipher
    #define ENCRYPT_ALGORITHM      CALG_RC4
    #define ENCRYPT_BLOCK_SIZE      1
#endif
#ifndef MS_ENH_RSA_AES_PROV
#ifdef UNICODE
#define MS_ENH_RSA_AES_PROV \
L"Microsoft Enhanced RSA and AES Cryptographic Provider (Prototype)"
#else
#define MS_ENH_RSA_AES_PROV \
"Microsoft Enhanced RSA and AES Cryptographic Provider (Prototype)"
#endif
#endif /* MS_ENH_RSA_AES_PROV */
#ifndef CALG_HMAC
#define CALG_HMAC (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_HMAC)
#endif
#ifdef CONFIG_TLS_INTERNAL
#ifdef __MINGW32_VERSION
#define PROV_RSA_AES  "Microsoft Enhanced RSA and AES Cryptographic Provider (Prototype)"
#endif
#endif /* MS_ENH_RSA_AES_PROV */
#ifndef CALG_HMAC
#define CALG_HMAC (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_HMAC)
#endif
 
 
 
 
	DWORD dwResult;
	HCRYPTPROV hProv;
	HCRYPTKEY hKey;
	HCRYPTKEY hSessionKey;
	DWORD cbBlob;
	BYTE *pbBlob;
	HCRYPTHASH hHash;
 
	//CString	m_cipher;
void Encrypt();
int main()
{
 
	
	if (!CryptAcquireContext(&hProv, NULL, MS_DEF_PROV, PROV_RSA_FULL, 0))
				{
						dwResult = GetLastError();
					if (dwResult == NTE_BAD_KEYSET)
						{
								if (!CryptAcquireContext(&hProv, 
									NULL, MS_DEF_PROV, PROV_RSA_AES, 
										CRYPT_NEWKEYSET))
									{
										printf("error creating cryptoAcquireContext");
									}
						}
    
 
				}
 
			if(CryptCreateHash(
									hProv, 
									 CALG_MD5, 
										0, 
										0, 
									 &hHash)) 
						{
							printf("An empty hash object has been created. \n");
						}
				else
			{
						printf("Error during CryptBeginHash!\n");
					exit(1);
			}
 
		
	
						if (!CryptImportKey(hProv, pbBlob, cbBlob, 0, 0, &hSessionKey))
								{
			
									printf("error creating CryptImportKey");
								}
		
 
					if (!CryptGenKey(hProv, CALG_AES_256, CRYPT_EXPORTABLE, &hSessionKey))
								{
			
									printf("error creating CryptGenKey");
								}	
	
    //Encrypt();
	return 0;
}
 
 
/*void Encrypt()
{
    //unsigned long length = m_clear.GetLength() +1;
	unsigned long length = 10;
    unsigned char * cipherBlock  ; // = (unsigned char*)malloc(length);
    LPCSTR mm = "hari";
	char myname[5] = "hari";
    memcpy(&cipherBlock, &myname, 10 -1); 
 
    if (!CryptEncrypt(hSessionKey, 0, TRUE, 0, mm, &length, 9))
    {
        printf("error creating CryptEncrypt");
    }
 
    //m_cipher = cipherBlock;
    //m_clear = "";
    //free(cipherBlock);
}*/

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migoEX

"undeclared identifier" - are you missing some includes? "wincrypt.h"?

itsmeandnobodyelse

>>>> are you missing some includes? "wincrypt

migoEx is right. You need to add

#include <wincrypt.h>

below include "stdafx.h" and recompile.

The missing constants were defined there.