Compile error with g++ (using DefaultEncryptor)

[ilius]

Hello
I will a simple code to encrypt and decrypt a string. I wrote
following Code:

__________________________________________________________
#include <iostream>
#include <stdlib.h>
//#include <cryptopp/cryptlib.h>
#include <cryptopp/default.h>
#include <cryptopp/hex.h>
//#include "cryptopp/modes.h"
//#include "cryptopp/aes.h"

using namespace CryptoPP;

using namespace std;

// encode a string using passPhrase and encode it in hex
// returns the ciphertext, which should be deleted by caller
char *EncryptString(const char *instr, const char *passPhrase) {
  unsigned int len=strlen(instr);
  char* outstr;

  DefaultEncryptor encryptor(passPhrase, new HexEncoder);
  //DefaultEncryptorWithMAC encryptor(passPhrase, new HexEncoder);
  encryptor.Put((byte *)instr, len);
  encryptor.MessageEnd();

  unsigned int outputLength = encryptor.MaxRetrievable();
  outstr = new char[outputLength+1];
  encryptor.Get((byte *)outstr, outputLength);
  outstr[outputLength] = 0;
  return outstr;
}


int main()
{
  //cout << crypt("firstpas", "as"); << "\n";
  cout << EncryptString("test string", "passwd") << "\n";
  return 0;
}
__________________________________________________________


And tried to compile it with g++ (without any command options, is
there needed any?)
I use GNU/Linux(Ubuntu 8.10).
I tested with g++ 4.1 and 4.2 and 4.3. but I get a long error output
that says undefined reference to `CryptoPP::....

A part of error:

/tmp/ccZbCSRe.o: In function `EncryptString(char const*, char
const*)':
crypt-test.cpp:(.text+0x138): undefined reference to
`CryptoPP::DefaultEncryptor::DefaultEncryptor(char const*,
CryptoPP::BufferedTransformation*)'
crypt-test.cpp:(.text+0x34d): undefined reference to
`CryptoPP::BufferedTransformation::MaxRetrievable() const'
crypt-test.cpp:(.text+0x37d): undefined reference to
`CryptoPP::BufferedTransformation::Get(unsigned char*, unsigned int)'
/tmp/ccZbCSRe.o: In function `CryptoPP::SecBlock<unsigned char,
CryptoPP::AllocatorWithCleanup<unsigned char, false> >::SecBlock
(unsigned int)':
crypt-test.cpp:
(.text._ZN8CryptoPP8SecBlockIhNS_20AllocatorWithCleanupIhLb0EEEEC1Ej
[CryptoPP::SecBlock<unsigned char,
CryptoPP::AllocatorWithCleanup<unsigned char, false> >::SecBlock
(unsigned int)]+0x25): undefined reference to
`CryptoPP::AllocatorWithCleanup<unsigned char, false>::allocate
(unsigned int, void const*)'
/tmp/ccZbCSRe.o: In function `CryptoPP::SecBlock<unsigned char,
CryptoPP::AllocatorWithCleanup<unsigned char, false> >::~SecBlock()':




And when I give option "-lcryptopp" to g++, running command:
g++ crypt-test.cpp -lcryptopp
Then I get this error (newly after previous like long error):

/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
undefined reference to `pthread_key_create'
/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
undefined reference to `pthread_getspecific'
/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
undefined reference to `pthread_key_delete'
/usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
undefined reference to `pthread_setspecific'
collect2: ld returned 1 exit status


Please help me. Thanks
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[Eugene Zolenko-2]

You'll need to link to cryptopp and to all its dependencies.

So make that
-lcryptopp -lpthread

and other libs it might need (just look up those undefined symbols and
find out which library are they from).

On Jul 27, 4:38 am, "saeed.gnu" <saeed....@...> wrote:

> Hello
> I will a simple code to encrypt and decrypt a string. I wrote
> following Code:
>
> __________________________________________________________
> #include <iostream>
> #include <stdlib.h>
> //#include <cryptopp/cryptlib.h>
> #include <cryptopp/default.h>
> #include <cryptopp/hex.h>
> //#include "cryptopp/modes.h"
> //#include "cryptopp/aes.h"
>
> using namespace CryptoPP;
>
> using namespace std;
>
> // encode a string using passPhrase and encode it in hex
> // returns the ciphertext, which should be deleted by caller
> char *EncryptString(const char *instr, const char *passPhrase) {
>   unsigned int len=strlen(instr);
>   char* outstr;
>
>   DefaultEncryptor encryptor(passPhrase, new HexEncoder);
>   //DefaultEncryptorWithMAC encryptor(passPhrase, new HexEncoder);
>   encryptor.Put((byte *)instr, len);
>   encryptor.MessageEnd();
>
>   unsigned int outputLength = encryptor.MaxRetrievable();
>   outstr = new char[outputLength+1];
>   encryptor.Get((byte *)outstr, outputLength);
>   outstr[outputLength] = 0;
>   return outstr;
>
> }
>
> int main()
> {
>   //cout << crypt("firstpas", "as"); << "\n";
>   cout << EncryptString("test string", "passwd") << "\n";
>   return 0;}
>
> __________________________________________________________
>
> And tried to compile it with g++ (without any command options, is
> there needed any?)
> I use GNU/Linux(Ubuntu 8.10).
> I tested with g++ 4.1 and 4.2 and 4.3. but I get a long error output
> that says undefined reference to `CryptoPP::....
>
> A part of error:
>
> /tmp/ccZbCSRe.o: In function `EncryptString(char const*, char
> const*)':
> crypt-test.cpp:(.text+0x138): undefined reference to
> `CryptoPP::DefaultEncryptor::DefaultEncryptor(char const*,
> CryptoPP::BufferedTransformation*)'
> crypt-test.cpp:(.text+0x34d): undefined reference to
> `CryptoPP::BufferedTransformation::MaxRetrievable() const'
> crypt-test.cpp:(.text+0x37d): undefined reference to
> `CryptoPP::BufferedTransformation::Get(unsigned char*, unsigned int)'
> /tmp/ccZbCSRe.o: In function `CryptoPP::SecBlock<unsigned char,
> CryptoPP::AllocatorWithCleanup<unsigned char, false> >::SecBlock
> (unsigned int)':
> crypt-test.cpp:
> (.text._ZN8CryptoPP8SecBlockIhNS_20AllocatorWithCleanupIhLb0EEEEC1Ej
> [CryptoPP::SecBlock<unsigned char,
> CryptoPP::AllocatorWithCleanup<unsigned char, false> >::SecBlock
> (unsigned int)]+0x25): undefined reference to
> `CryptoPP::AllocatorWithCleanup<unsigned char, false>::allocate
> (unsigned int, void const*)'
> /tmp/ccZbCSRe.o: In function `CryptoPP::SecBlock<unsigned char,
> CryptoPP::AllocatorWithCleanup<unsigned char, false> >::~SecBlock()':
>
> And when I give option "-lcryptopp" to g++, running command:
> g++ crypt-test.cpp -lcryptopp
> Then I get this error (newly after previous like long error):
>
> /usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
> undefined reference to `pthread_key_create'
> /usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
> undefined reference to `pthread_getspecific'
> /usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
> undefined reference to `pthread_key_delete'
> /usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
> undefined reference to `pthread_setspecific'
> collect2: ld returned 1 exit status
>
> Please help me. Thanks

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[ilius]

Eugene, Thanks a lot! My problem solved :)

On 7/29/09, Eugene Zolenko <zolenkoe@...> wrote:

>
> You'll need to link to cryptopp and to all its dependencies.
>
> So make that
> -lcryptopp -lpthread
>
> and other libs it might need (just look up those undefined symbols and
> find out which library are they from).
>
> On Jul 27, 4:38 am, "saeed.gnu" <saeed....@...> wrote:
>> Hello
>> I will a simple code to encrypt and decrypt a string. I wrote
>> following Code:
>>
>> __________________________________________________________
>> #include <iostream>
>> #include <stdlib.h>
>> //#include <cryptopp/cryptlib.h>
>> #include <cryptopp/default.h>
>> #include <cryptopp/hex.h>
>> //#include "cryptopp/modes.h"
>> //#include "cryptopp/aes.h"
>>
>> using namespace CryptoPP;
>>
>> using namespace std;
>>
>> // encode a string using passPhrase and encode it in hex
>> // returns the ciphertext, which should be deleted by caller
>> char *EncryptString(const char *instr, const char *passPhrase) {
>>   unsigned int len=strlen(instr);
>>   char* outstr;
>>
>>   DefaultEncryptor encryptor(passPhrase, new HexEncoder);
>>   //DefaultEncryptorWithMAC encryptor(passPhrase, new HexEncoder);
>>   encryptor.Put((byte *)instr, len);
>>   encryptor.MessageEnd();
>>
>>   unsigned int outputLength = encryptor.MaxRetrievable();
>>   outstr = new char[outputLength+1];
>>   encryptor.Get((byte *)outstr, outputLength);
>>   outstr[outputLength] = 0;
>>   return outstr;
>>
>> }
>>
>> int main()
>> {
>>   //cout << crypt("firstpas", "as"); << "\n";
>>   cout << EncryptString("test string", "passwd") << "\n";
>>   return 0;}
>>
>> __________________________________________________________
>>
>> And tried to compile it with g++ (without any command options, is
>> there needed any?)
>> I use GNU/Linux(Ubuntu 8.10).
>> I tested with g++ 4.1 and 4.2 and 4.3. but I get a long error output
>> that says undefined reference to `CryptoPP::....
>>
>> A part of error:
>>
>> /tmp/ccZbCSRe.o: In function `EncryptString(char const*, char
>> const*)':
>> crypt-test.cpp:(.text+0x138): undefined reference to
>> `CryptoPP::DefaultEncryptor::DefaultEncryptor(char const*,
>> CryptoPP::BufferedTransformation*)'
>> crypt-test.cpp:(.text+0x34d): undefined reference to
>> `CryptoPP::BufferedTransformation::MaxRetrievable() const'
>> crypt-test.cpp:(.text+0x37d): undefined reference to
>> `CryptoPP::BufferedTransformation::Get(unsigned char*, unsigned int)'
>> /tmp/ccZbCSRe.o: In function `CryptoPP::SecBlock<unsigned char,
>> CryptoPP::AllocatorWithCleanup<unsigned char, false> >::SecBlock
>> (unsigned int)':
>> crypt-test.cpp:
>> (.text._ZN8CryptoPP8SecBlockIhNS_20AllocatorWithCleanupIhLb0EEEEC1Ej
>> [CryptoPP::SecBlock<unsigned char,
>> CryptoPP::AllocatorWithCleanup<unsigned char, false> >::SecBlock
>> (unsigned int)]+0x25): undefined reference to
>> `CryptoPP::AllocatorWithCleanup<unsigned char, false>::allocate
>> (unsigned int, void const*)'
>> /tmp/ccZbCSRe.o: In function `CryptoPP::SecBlock<unsigned char,
>> CryptoPP::AllocatorWithCleanup<unsigned char, false> >::~SecBlock()':
>>
>> And when I give option "-lcryptopp" to g++, running command:
>> g++ crypt-test.cpp -lcryptopp
>> Then I get this error (newly after previous like long error):
>>
>> /usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
>> undefined reference to `pthread_key_create'
>> /usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
>> undefined reference to `pthread_getspecific'
>> /usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
>> undefined reference to `pthread_key_delete'
>> /usr/lib/gcc/i486-linux-gnu/4.3.2/../../../../lib/libcrypto++.so:
>> undefined reference to `pthread_setspecific'
>> collect2: ld returned 1 exit status
>>
>> Please help me. Thanks
> >
>

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