Help with compiling AES 128 using gcrypt in Eclipse

This is a discussion on Help with compiling AES 128 using gcrypt in Eclipse within the C Programming forums, part of the General Programming Boards category; I am trying to implement an AES 128 encryption algorithm using gcrypt in Eclipse; however, I am getting nowhere fast. ...

  1. #1
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    Help with compiling AES 128 using gcrypt in Eclipse

    I am trying to implement an AES 128 encryption algorithm using gcrypt in Eclipse; however, I am getting nowhere fast. Below is the code I am using, which I got from another thread.

    Code:
    #include <stdio.h>
    #include <stdlib.h>
    #include <gcrypt.h>
    
    
    static void aesTest(int gcry_mode, char * iniVector)
    {
        #define GCRY_CIPHER GCRY_CIPHER_AES128   // Pick the cipher here
    
    
        gcry_error_t     gcryError;
        gcry_cipher_hd_t gcryCipherHd;
        size_t           index;
    
    
        size_t keyLength = gcry_cipher_get_algo_keylen(GCRY_CIPHER);
        size_t blkLength = gcry_cipher_get_algo_blklen(GCRY_CIPHER);
        char * txtBuffer = "123456789 abcdefghijklmnopqrstuvwzyz ABCDEFGHIJKLMNOPQRSTUVWZYZ";
        size_t txtLength = strlen(txtBuffer)+1; // string plus termination
        char * encBuffer = malloc(txtLength);
        char * outBuffer = malloc(txtLength);
        char * aesSymKey = "one test AES key"; // 16 bytes
    
    
        gcryError = gcry_cipher_open(
            &gcryCipherHd, // gcry_cipher_hd_t *
            GCRY_CIPHER,   // int
            gcry_mode,     // int
            0);            // unsigned int
        if (gcryError)
        {
            printf("gcry_cipher_open failed:  %s/%s\n",
                   gcry_strsource(gcryError),
                   gcry_strerror(gcryError));
            return;
        }
    
    
        gcryError = gcry_cipher_setkey(gcryCipherHd, aesSymKey, keyLength);
        if (gcryError)
        {
            printf("gcry_cipher_setkey failed:  %s/%s\n",
                   gcry_strsource(gcryError),
                   gcry_strerror(gcryError));
            return;
        }
    
    
        gcryError = gcry_cipher_setiv(gcryCipherHd, iniVector, blkLength);
        if (gcryError)
        {
            printf("gcry_cipher_setiv failed:  %s/%s\n",
                   gcry_strsource(gcryError),
                   gcry_strerror(gcryError));
            return;
        }
    
    
        gcryError = gcry_cipher_encrypt(
            gcryCipherHd, // gcry_cipher_hd_t
            encBuffer,    // void *
            txtLength,    // size_t
            txtBuffer,    // const void *
            txtLength);   // size_t
        if (gcryError)
        {
            printf("gcry_cipher_encrypt failed:  %s/%s\n",
                   gcry_strsource(gcryError),
                   gcry_strerror(gcryError));
            return;
        }
    
    
        gcryError = gcry_cipher_setiv(gcryCipherHd, iniVector, blkLength);
        if (gcryError)
        {
            printf("gcry_cipher_setiv failed:  %s/%s\n",
                   gcry_strsource(gcryError),
                   gcry_strerror(gcryError));
            return;
        }
    
    
        gcryError = gcry_cipher_decrypt(
            gcryCipherHd, // gcry_cipher_hd_t
            outBuffer,    // void *
            txtLength,    // size_t
            encBuffer,    // const void *
            txtLength);   // size_t
        if (gcryError)
        {
            printf("gcry_cipher_decrypt failed:  %s/%s\n",
                   gcry_strsource(gcryError),
                   gcry_strerror(gcryError));
            return;
        }
    
    
        printf("gcry_mode = %s\n", gcry_mode == GCRY_CIPHER_MODE_ECB ? "ECB" : "CBC");
        printf("keyLength = %d\n", keyLength);
        printf("blkLength = %d\n", blkLength);
        printf("txtLength = %d\n", txtLength);
        printf("aesSymKey = %s\n", aesSymKey);
        printf("iniVector = %s\n", iniVector);
        printf("txtBuffer = %s\n", txtBuffer);
    
    
        printf("encBuffer = ");
        for (index = 0; index<txtLength; index++)
            printf("%02X", (unsigned char)encBuffer[index]);
        printf("\n");
    
    
        printf("outBuffer = %s\n", outBuffer);
    
    
        // clean up after ourselves
        gcry_cipher_close(gcryCipherHd);
        free(encBuffer);
        free(outBuffer);
    }
    
    
    int main(void) {
        aesTest(GCRY_CIPHER_MODE_ECB, "a test ini value");
        aesTest(GCRY_CIPHER_MODE_ECB, "different value!");
        aesTest(GCRY_CIPHER_MODE_CBC, "a test ini value");
        aesTest(GCRY_CIPHER_MODE_CBC, "different value!");
        return EXIT_SUCCESS;
    }
    When I try to build the above, I get the below errors/warnings. I have a feeling I might not being including the gcrypt library correctly - I added the libgcrypt directory to "Project Properties"/"C/C++ General"/"Paths and Symbols"/"Includes" - but after playing around with different ways to include the library, I kept getting similar results. Although it shouldn't matter, I'm running A MacBook with OS Lion.

    Here is my console after building:


    Code:
    **** Build of configuration Debug for project aesTest ****
    
    
    make all 
    Building file: ../src/aesTest.c
    Invoking: GCC C Compiler
    gcc -I"/Applications/eclipse C++/Includes/libgcrypt-1.5.0/src" -I"/Applications/eclipse C++/Includes/libgcrypt-1.5.0/cipher" -I"/Applications/eclipse C++/Includes/libgpg-error-1.10/src" -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/aesTest.d" -MT"src/aesTest.d" -o "src/aesTest.o" "../src/aesTest.c"
    In file included from ../src/aesTest.c:13:
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1336: warning: 'gcry_ac_io_mode_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1337: warning: 'gcry_ac_io_type_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1344: warning: 'gcry_ac_data_read_cb_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1358: warning: 'gcry_ac_data_write_cb_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1393: warning: 'gcry_md_algo_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1401: warning: 'gcry_md_algo_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1407: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1411: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1415: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1416: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1421: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1425: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1433: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1440: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1448: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1456: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1463: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1470: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1470: warning: 'gcry_ac_io_mode_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1471: warning: 'gcry_ac_io_type_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1477: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1477: warning: 'gcry_ac_io_mode_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1478: warning: 'gcry_ac_io_type_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1482: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1483: warning: 'gcry_ac_id_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1487: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1491: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1491: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1492: warning: 'gcry_ac_key_type_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1492: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1500: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1502: warning: 'gcry_ac_key_pair_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1507: warning: 'gcry_ac_key_pair_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1508: warning: 'gcry_ac_key_type_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1512: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1516: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1516: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1520: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1521: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1526: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1526: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1531: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1535: warning: 'gcry_ac_key_pair_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1541: warning: 'gcry_ac_em_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1543: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1544: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1550: warning: 'gcry_ac_em_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1552: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1553: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1559: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1561: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1563: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1569: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1571: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1573: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1578: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1579: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1581: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1587: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1588: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1590: warning: 'gcry_ac_data_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1598: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1599: warning: 'gcry_ac_scheme_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1601: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1602: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1603: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1611: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1612: warning: 'gcry_ac_scheme_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1614: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1615: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1616: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1624: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1625: warning: 'gcry_ac_scheme_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1627: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1628: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1629: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1638: warning: 'gcry_ac_handle_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1639: warning: 'gcry_ac_scheme_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1641: warning: 'gcry_ac_key_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1642: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1643: warning: 'gcry_ac_io_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1649: warning: 'gcry_ac_id_t' is deprecated
    /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1656: warning: 'gcry_ac_id_t' is deprecated
    ../src/aesTest.c: In function 'aesTest':
    ../src/aesTest.c:100: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
    ../src/aesTest.c:100: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
    ../src/aesTest.c:101: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
    ../src/aesTest.c:101: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
    ../src/aesTest.c:102: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
    ../src/aesTest.c:102: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
    Finished building: ../src/aesTest.c
     
    Building target: aesTest
    Invoking: MacOS X C Linker
    gcc -L"/Applications/eclipse C++/Includes/libgcrypt-1.5.0/src" -L"/Applications/eclipse C++/Includes/libgcrypt-1.5.0/cipher" -L"/Applications/eclipse C++/Includes/libgpg-error-1.10/src" -o "aesTest"  ./src/aesTest.o   
    Undefined symbols for architecture x86_64:
      "_gcry_cipher_get_algo_keylen", referenced from:
          _aesTest in aesTest.o
      "_gcry_cipher_get_algo_blklen", referenced from:
          _aesTest in aesTest.o
      "_gcry_cipher_open", referenced from:
          _aesTest in aesTest.o
      "_gcry_strerror", referenced from:
          _aesTest in aesTest.o
      "_gcry_strsource", referenced from:
          _aesTest in aesTest.o
      "_gcry_cipher_setkey", referenced from:
          _aesTest in aesTest.o
      "_gcry_cipher_setiv", referenced from:
          _aesTest in aesTest.o
      "_gcry_cipher_encrypt", referenced from:
          _aesTest in aesTest.o
      "_gcry_cipher_decrypt", referenced from:
          _aesTest in aesTest.o
      "_gcry_cipher_close", referenced from:
          _aesTest in aesTest.o
    ld: symbol(s) not found for architecture x86_64
    collect2: ld returned 1 exit status
    make: *** [aesTest] Error 1
    
    
    **** Build Finished ****

  2. #2
    and the hat of wrongness Salem's Avatar
    Join Date
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    > /Applications/eclipse C++/Includes/libgcrypt-1.5.0/src/gcrypt.h:1336: warning: 'gcry_ac_io_mode_t' is deprecated
    For all of these, you need to read the project documentation to find out what new thing to use in it's place.

    > ../src/aesTest.c:100: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'
    In newer C versions, use "%zd" as the printf format for printing a size_t

    > Undefined symbols for architecture x86_64:
    > "_gcry_cipher_get_algo_keylen", referenced from:
    I saw a lot of -L options (uppercase), but no -l (lowercase) option.
    If the library is called libfoo.a, then you need to say -lfoo on that command line / linker settings.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

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