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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;
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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
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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.
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please show your Linker Command Line from your project Configuration Properties -> Linker - it should contain ippcpmt.lib
regards, Igor
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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
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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
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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
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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;
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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; }
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Whatever I did, I can not run this code. I always take a link error. should I add to env. variables anyting.
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Did you try to build exactly my example?

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