topic Cryptography unresolved external symbol in Intel® Integrated Performance Primitives

Cryptography unresolved external symbol

ebubekir_t_ — Mon, 15 Sep 2014 07:22:59 GMT

I installed Trial Composer 15 Desktop and IPP and Cryptography lib 8.2. I have found below code. I run the code, there is no compilation error but there are four link error like unresolved external symbol. I searched some issues. Issues say that you must add lib called ippid.lib, libemerged ext. but there is no these libraries. How can I solve this problem.

1>IntelRijndael.obj : error LNK2019: unresolved external symbol _ippsRijndael128GetSize@4 referenced in function _main
1>IntelRijndael.obj : error LNK2019: unresolved external symbol _ippsRijndael128Init@12 referenced in function _main
1>IntelRijndael.obj : error LNK2019: unresolved external symbol _ippsRijndael128EncryptCTR@24 referenced in function _main
1>IntelRijndael.obj : error LNK2019: unresolved external symbol _ippsRijndael128DecryptCTR@24 referenced in function _main
1>D:\RijndaelRefactoring\IntelDeneme\Debug\IntelRijndael.exe : fatal error LNK1120: 4 unresolved externals

Code:

// size of Rijndael-128 algorithm block is equal to 16
const int aesBlkSize = 16;

// get the size of the context needed for the encryption/decryption operation
int ctxSize;
ippsRijndael128GetSize(&ctxSize);

// and allocate one
IppsRijndael128Spec* pCtx = (IppsRijndael128Spec*)( new Ipp8u [ctxSize] );
// define the key
Ipp8u key[16] = {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
0x08,0x09,0x10,0x11,0x12,0x13,0x14,0x15};

// and prepare the context for Rijndael128 usage
ippsRijndael128Init(key,IppsRijndaelKey128, pCtx);

// define the message to be encrypted
Ipp8u ptext[] = {"quick brown fox jupm over lazy dog"};

// define an initial vector
Ipp8u crt0[aesBlkSize] = {0xff,0xee,0xdd,0xcc,0xbb,0xaa,0x99,0x88,
0x77,0x66,0x55,0x44,0x33,0x22,0x11,0x00};
Ipp8u crt[aesBlkSize];

// counter the variable number of bits
int ctrNumBitSize = 64;

// allocate enough memory for the ciphertext
// note that
// the size of the ciphertext is always equal to that of the planetext
Ipp8u ctext[sizeof(ptext)];

// init the counter
memcpy(crt, crt0, sizeof(crt0));
// encrypt (CTR mode) ptext message
// pay attention to the 'length' parameter
// it defines the number of bytes to be encrypted
memcpy(crt, crt0, sizeof(crt0));
ippsRijndael128EncryptCTR(ptext, ctext, sizeof(ptext),
pCtx,
crt, ctrNumBitSize);

// allocate memory for the decrypted message
Ipp8u rtext[sizeof(ptext)];

// init the counter
memcpy(crt, crt0, sizeof(crt0));

// decrypt (ECTR mode) ctext message
// pay attention to the 'length' parameter
// it defines the number of bytes to be decrypted
ippsRijndael128DecryptCTR(ctext, rtext, sizeof(ptext),
pCtx,
crt, ctrNumBitSize);
delete (Ipp8u*)pCtx;

Hi,

Igor_A_Intel — Wed, 17 Sep 2014 09:19:54 GMT

Hi,

For this code example you need ippCP library that is not a part of trial version of Composer and should be installed separately. ippdi (data integrity) library doesn't have any relation to the code above.

regards, Igor

Thank you igor for your reply

ebubekir_t_ — Wed, 17 Sep 2014 10:29:44 GMT

Thank you igor for your reply. I understand ippid.lib. When I installed parallel_studio_xe_2015_setup.exe, ipp installed and then I installed cryptography lib separately. I can see ipp folder in my installation folder in C drive. I can see ippcp.lib also. But I have taken unresolved externals symbol error like above. How can I solve this problem. I use vs studio 2012 and windows 7.

please show your Linker

Igor_A_Intel — Wed, 17 Sep 2014 15:40:16 GMT

please show your Linker Command Line from your project Configuration Properties -> Linker - it should contain ippcpmt.lib

regards, Igor

I made below settings in vs

ebubekir_t_ — Thu, 18 Sep 2014 06:42:14 GMT

I made below settings in vs 2012 but there are still link errors

Configuration Properties -> C/C++ ->Additional Include Directories : intel\Composer XE 2015\ipp\include;

Configuration Properties -> Linker ->Additional Library Directories : intel\Composer XE 2015\ipp\lib\intel64;

Configuration Properties -> Linker ->Input ippcore.lib;ippcp.lib;ippcpmt.lib

what kind of linking you need

Igor_A_Intel — Thu, 18 Sep 2014 16:25:47 GMT

what kind of linking you need - static or dynamic? ippcpmt.lib is static merged library while ippcp.lib is a stub lib for dynamic linking. So I see you have both in the command line, while you use stub lib for ippcore library... I think there should be either ippcore.lib, ippcp.lib (for dynamic linking - you'll need then ippcore.dll and ippcp.dll for application run), or ippcoremt.lib, ippcpmt.lib for static linking, but not some mix of them.

regards, Igor

Hi,

Pavel_B_Intel1 — Thu, 18 Sep 2014 18:41:39 GMT

Hi,

if you would like to link with static, you should link with: ippcpmt.lib ippcoremt.lib

if you would like to link with dynamic, you should link with: ippcp.lib ippcore.lib

You should not mix static and dynamic libraries in link command!

Pavel

I use dynamic link. I

ebubekir_t_ — Mon, 22 Sep 2014 06:21:43 GMT

I use dynamic link. I deleted ippcpmt.lib and there are only ippcp.lib ippcore.lib in linker input. My configuration is in below

What else should I do?

Configuration Properties -> C/C++ ->Additional Include Directories : intel\Composer XE 2015\ipp\include;

Configuration Properties -> Linker ->Additional Library Directories : intel\Composer XE 2015\ipp\lib\intel64;

Configuration Properties -> Linker ->Input ippcore.lib;ippcp.lib;

I guess you missed #include

Pavel_B_Intel1 — Tue, 23 Sep 2014 09:58:40 GMT

I guess you missed #include "ippcp.h"

I can compile your example without problems to add necessary includes:

#include <memory.h>
#include <stdlib.h>
#include "ipp.h"
#include "ippcp.h"

int main()
{
   // size of Rijndael-128 algorithm block is equal to 16
   const int aesBlkSize = 16;

   // get the size of the context needed for the encryption/decryption operation
   int ctxSize;

   ippsRijndael128GetSize(&ctxSize);

   // and allocate one
   IppsRijndael128Spec* pCtx = (IppsRijndael128Spec*)( new Ipp8u [ctxSize] );

   // define the key
   Ipp8u key[16] = {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
                    0x08,0x09,0x10,0x11,0x12,0x13,0x14,0x15};

   // and prepare the context for Rijndael128 usage
   ippsRijndael128Init(key,IppsRijndaelKey128, pCtx);

   // define the message to be encrypted
   Ipp8u ptext[] = {"quick brown fox jupm over lazy dog"};

  // define an initial vector
   Ipp8u crt0[aesBlkSize] = {0xff,0xee,0xdd,0xcc,0xbb,0xaa,0x99,0x88,                         
                             0x77,0x66,0x55,0x44,0x33,0x22,0x11,0x00};

   Ipp8u  crt[aesBlkSize];

   // counter the variable number of bits
   int ctrNumBitSize = 64;

   // allocate enough memory for the ciphertext
   // note that
   // the size of the ciphertext is always equal to that of the planetext
   Ipp8u ctext[sizeof(ptext)];

   // init the counter
   memcpy(crt, crt0, sizeof(crt0));

   // encrypt (CTR mode) ptext message
   // pay attention to the 'length' parameter
   // it defines the number of bytes to be encrypted
   memcpy(crt, crt0, sizeof(crt0));

   ippsRijndael128EncryptCTR(ptext, ctext, sizeof(ptext),
                             pCtx,
                             crt, ctrNumBitSize);

   // allocate memory for the decrypted message
   Ipp8u rtext[sizeof(ptext)];

   // init the counter
   memcpy(crt, crt0, sizeof(crt0));

   // decrypt (ECTR mode) ctext message
   // pay attention to the 'length' parameter
   // it defines the number of bytes to be decrypted
   ippsRijndael128DecryptCTR(ctext, rtext, sizeof(ptext),
                             pCtx,
                             crt, ctrNumBitSize);

   delete (Ipp8u*)pCtx;

   return 0;
}

Whatever I did, I can not

ebubekir_t_ — Wed, 24 Sep 2014 11:47:50 GMT

Whatever I did, I can not run this code. I always take a link error. should I add to env. variables anyting.

Did you try to build exactly

Pavel_B_Intel1 — Wed, 24 Sep 2014 14:20:59 GMT

Did you try to build exactly my example?