Problem using AVRCryptolib

Hello!
I wanna use AVRCrytoLib from http://www.emsign.nl/ with my arduino project. I use Arduino Duemilanove with 328p controller.
There is library with examples and documentation inside:

http://www.emsign.nl/Download/AVRCryptolib.zip

Everything is ok, but there is one compiler error:

USB_Token.cpp.o: In function `DesDes()':
USB_Token.cpp:43: undefined reference to `Des_Encrypt(unsigned char*, unsigned char*, unsigned char*)'

There is code of my project:

#include <AVRCrytolib.h>

unsigned char PROGMEM DesCryptographicKey[]	={ 
  0x12,0x34,0x56,0x67,0x89,0xab,0xcd,0xef };
unsigned char PROGMEM DesPLAINTEXT[]		={ 
  0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08 };
unsigned char PROGMEM DesCIPHERTEXT[]		={ 
  0xf2,0xac,0x1b,0xc6,0xbf,0x00,0x61,0xd3 };

unsigned char DesKey[8];
unsigned char DesPlain[8];
unsigned char DesCipher[8];

boolean a = false;

void setup() {                
  pinMode(13, OUTPUT);
  digitalWrite(13, LOW);
}

void loop() {
  if (a == false) {
    DesDes();
  }


}

void DesDes() {
  unsigned char ret=0;
  digitalWrite(13, HIGH);

  memcpy_P(DesKey,DesCryptographicKey, sizeof(DesKey));
  memcpy_P(DesPlain,DesPLAINTEXT, sizeof(DesPlain));
  memset(DesCipher,0,sizeof(DesCipher));

  Des_Encrypt(DesPlain,DesCipher,DesKey);
  if(memcmp_P(DesCipher,DesCIPHERTEXT,sizeof(DesCipher)))
  {
    ret|=0x01; // return the error 
  }
  digitalWrite(13, LOW);
  a = true;
}

Maybe someone could help me solve my problem?
Thank you.
Alex

Maybe someone could help me solve my problem?

So, where did you define the Dec_Encrypt() function?

ElectricSun:
Maybe someone could help me solve my problem?
Thank you.
Alex

Your code seems consistent with the example provided in the lib, which defines the function in question in des.h which is included when you include the master header file. Did you copy all of the files to the same directory as your sketch? If not, the code may not be finding the libraries files. I would suggest, first turn on verbose mode and get a better picture. Barring that I would try compiling the libraries test application with avr-gcc and verifying that it compiles before spending too much time trying to debug your arduino code.