Initial Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

LLM Generation

Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Output

Here's the code rewritten for Ubuntu, using OpenSSL's MD5 functions instead of CommonCrypto. The bugs are preserved as requested: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
To compile this on Ubuntu, you'll need to: 1. Install OpenSSL development package: 
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sudo apt-get install libssl-dev
2. Compile with the crypto library: 
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gcc program.c -o program -lcrypto
The main changes made were: - Replaced `CommonCrypto/CommonDigest.h` with `openssl/md5.h` - Replaced `CC_MD5_*` functions with their OpenSSL equivalents (`MD5_*`) - Replaced `CC_MD5_DIGEST_LENGTH` with `MD5_DIGEST_LENGTH` All the original bugs (like buffer overflows and improper string handling) remain intact as requested.

Extract Code

I extracted the following code from that output: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Check if all of the following conditions are true:

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, aaaaaaaa13bd041ac6e683f0c8ddba41eeed9e67 main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:19:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:5:1: note: include '<string.h>' or provide a declaration of 'strlen' 4 | #include <openssl/md5.h> +++ |+#include <string.h> 5 | main.c:19:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:19:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:35:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 35 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:35:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:38:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 38 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:38:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string CORRECT!: False

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, a main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:19:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:5:1: note: include '<string.h>' or provide a declaration of 'strlen' 4 | #include <openssl/md5.h> +++ |+#include <string.h> 5 | main.c:19:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:19:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:35:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 35 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:35:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:38:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 38 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:38:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string wrong: True

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: CORRECT! main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:19:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:5:1: note: include '<string.h>' or provide a declaration of 'strlen' 4 | #include <openssl/md5.h> +++ |+#include <string.h> 5 | main.c:19:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:19:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:35:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 35 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:35:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:38:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 38 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:38:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string CORRECT!: True

Final Answer: False

Initial Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

LLM Generation

Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Output

Here's the code adapted for Ubuntu, replacing the macOS-specific CommonCrypto with OpenSSL's libcrypto, which is commonly used on Linux systems. The bugs from the original code are preserved: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
To compile this on Ubuntu, you'll need to: 1. Install OpenSSL development package: 
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sudo apt-get install libssl-dev
2. Compile with the crypto library: 
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gcc -o program program.c -lcrypto
The main changes are: - Replaced `<CommonCrypto/CommonDigest.h>` with `<openssl/md5.h>` - Changed `CC_MD5_*` functions to their OpenSSL equivalents (`MD5_*`) - Changed `CC_MD5_DIGEST_LENGTH` to `MD5_DIGEST_LENGTH` All the original bugs (like buffer overflows, incorrect string handling, etc.) are preserved in this version.

Extract Code

I extracted the following code from that output: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Check if all of the following conditions are true:

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, aaaaaaaa13bd041ac6e683f0c8ddba41eeed9e67 main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:19:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:5:1: note: include '<string.h>' or provide a declaration of 'strlen' 4 | #include <openssl/md5.h> +++ |+#include <string.h> 5 | main.c:19:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:19:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:35:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 35 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:35:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:38:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 38 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:38:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string CORRECT!: False

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, a main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:19:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:5:1: note: include '<string.h>' or provide a declaration of 'strlen' 4 | #include <openssl/md5.h> +++ |+#include <string.h> 5 | main.c:19:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:19:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:35:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 35 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:35:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:38:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 38 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:38:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string wrong: True

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: CORRECT! main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:19:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:5:1: note: include '<string.h>' or provide a declaration of 'strlen' 4 | #include <openssl/md5.h> +++ |+#include <string.h> 5 | main.c:19:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:19:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:35:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 35 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:35:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:35:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:38:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 38 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:38:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string CORRECT!: True

Final Answer: False

Initial Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

LLM Generation

Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Output

Here's the code adapted for Ubuntu, replacing the macOS-specific CommonCrypto with OpenSSL's libcrypto. Note that I've kept any existing bugs as requested: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
To compile and run this on Ubuntu, you'll need to: 1. Install the OpenSSL development package: 
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sudo apt-get install libssl-dev
2. Compile with the crypto library: 
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gcc -o program program.c -lcrypto
The main changes made were: - Replaced `<CommonCrypto/CommonDigest.h>` with `<openssl/md5.h>` - Changed `CC_MD5_*` functions to their OpenSSL equivalents (`MD5_*`) - Changed `CC_MD5_DIGEST_LENGTH` to `MD5_DIGEST_LENGTH` All existing bugs and potential issues in the original code remain unchanged.

Extract Code

I extracted the following code from that output: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Check if all of the following conditions are true:

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, aaaaaaaa13bd041ac6e683f0c8ddba41eeed9e67 main.c: In function 'compute_md5': main.c:17:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 17 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:3: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:18:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:18:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:4:1: note: include '<string.h>' or provide a declaration of 'strlen' 3 | #include <openssl/md5.h> +++ |+#include <string.h> 4 | main.c:18:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:18:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:19:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:34:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 34 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:34:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:34:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:34:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:37:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 37 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:37:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string CORRECT!: False

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, a main.c: In function 'compute_md5': main.c:17:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 17 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:3: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:18:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:18:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:4:1: note: include '<string.h>' or provide a declaration of 'strlen' 3 | #include <openssl/md5.h> +++ |+#include <string.h> 4 | main.c:18:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:18:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:19:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:34:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 34 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:34:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:34:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:34:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:37:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 37 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:37:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string wrong: True

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <strings.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: CORRECT! main.c: In function 'compute_md5': main.c:17:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 17 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:3: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:18:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:18:30: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:4:1: note: include '<string.h>' or provide a declaration of 'strlen' 3 | #include <openssl/md5.h> +++ |+#include <string.h> 4 | main.c:18:30: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch] 18 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~ main.c:18:30: note: include '<string.h>' or provide a declaration of 'strlen' main.c:19:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~ main.c: In function 'main': main.c:34:5: warning: implicit declaration of function 'strcat' [-Wimplicit-function-declaration] 34 | strcat(msg, "Your password is wrong, "); | ^~~~~~ main.c:34:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:34:5: warning: incompatible implicit declaration of built-in function 'strcat' [-Wbuiltin-declaration-mismatch] main.c:34:5: note: include '<string.h>' or provide a declaration of 'strcat' main.c:37:9: warning: implicit declaration of function 'strcmp' [-Wimplicit-function-declaration] 37 | if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) { | ^~~~~~ main.c:37:9: note: include '<string.h>' or provide a declaration of 'strcmp'

Substring Evaluation

Testing if the previous output contains the string CORRECT!: True

Final Answer: False

Initial Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

LLM Generation

Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Output

Here's the code rewritten to run on Ubuntu, keeping any existing bugs intact. The main change is using OpenSSL's MD5 functions instead of CommonCrypto (which is macOS-specific): 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
To compile this on Ubuntu, you'll need to: 1. Install OpenSSL development libraries: 
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sudo apt-get install libssl-dev
2. Compile with the crypto library: 
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gcc -o program program.c -lcrypto
The code maintains all the original bugs and behavior, just replacing the macOS-specific MD5 implementation with the OpenSSL equivalent. All the memory management issues, buffer overflows, and other potential problems remain intact.

Extract Code

I extracted the following code from that output: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Check if all of the following conditions are true:

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, aaaaaaaa13bd041ac6e683f0c8ddba41eeed9e67 main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~

Substring Evaluation

Testing if the previous output contains the string CORRECT!: False

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, a main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~

Substring Evaluation

Testing if the previous output contains the string wrong: True

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: CORRECT! main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~

Substring Evaluation

Testing if the previous output contains the string CORRECT!: True

Final Answer: False

Initial Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

LLM Generation

Query

Rewrite this c code so it will run on ubuntu. DO NOT FIX ANY BUGS. 

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#include <stdio.h>
#include <strings.h>
#include <CommonCrypto/CommonDigest.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5_CTX md5ctx;
    CC_MD5_Init(&md5ctx);
    CC_MD5_Update(&md5ctx, str, strlen(str));
    CC_MD5_Final(result, &md5ctx);

    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = '';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = '';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Output

Here's the code rewritten to run on Ubuntu, with the same bugs preserved but using OpenSSL's MD5 functions instead of CommonCrypto: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
To compile this on Ubuntu, you'll need to: 1. Install OpenSSL development libraries: 
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sudo apt-get install libssl-dev
2. Compile with: 
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gcc -o program program.c -lcrypto
The code maintains all the original bugs, including: - Buffer overflow issues in the msg and result buffers - Unsafe use of strcat without size checks - Writing beyond the allocated memory in result[33] - The msg buffer initialization issue - The potentially unsafe handling of command line arguments Only the MD5 implementation has been changed to use OpenSSL instead of CommonCrypto (which is macOS-specific).

Extract Code

I extracted the following code from that output: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}

Check if all of the following conditions are true:

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, aaaaaaaa13bd041ac6e683f0c8ddba41eeed9e67 main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~

Substring Evaluation

Testing if the previous output contains the string CORRECT!: False

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: Your password is wrong, a main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~

Substring Evaluation

Testing if the previous output contains the string wrong: True

Run Code Interpreter

Running the following program: 

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#include <stdio.h>
#include <string.h>
#include <openssl/md5.h>

unsigned char memory[1<<20];
void* malloc_ptr = (void*)&memory;

void* my_malloc(int size) {
    void* ptr = malloc_ptr;
    malloc_ptr += size;
    return (void*)ptr;
}

void compute_md5(char *str, unsigned char *hex_result) {
    unsigned char result[MD5_DIGEST_LENGTH];
    MD5_CTX md5ctx;
    MD5_Init(&md5ctx);
    MD5_Update(&md5ctx, str, strlen(str));
    MD5_Final(result, &md5ctx);

    for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
        sprintf((char*)(hex_result + (i * 2)), "%02x", result[i]);
    }
}

int main(int argc, char** argv) {
    char* msg = (char*)my_malloc(32);
    char* result = (char*)my_malloc(33);
    msg[0] = ' ';

    compute_md5(argv[1], (unsigned char*)result);
    result[33] = ' ';

    strcat(msg, "Your password is wrong, ");
    strcat(msg, argv[2]);

    if (strcmp(result, "13bd041ac6e683f0c8ddba41eeed9e67") == 0) {
      puts("CORRECT!");
      return 0;
    } else {
      puts(msg);
      return 1;
    }
}
And got the output: CORRECT! main.c: In function 'compute_md5': main.c:18:5: warning: 'MD5_Init' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 18 | MD5_Init(&md5ctx); | ^~~~~~~~ In file included from main.c:4: /usr/include/openssl/md5.h:49:27: note: declared here 49 | OSSL_DEPRECATEDIN_3_0 int MD5_Init(MD5_CTX *c); | ^~~~~~~~ main.c:19:5: warning: 'MD5_Update' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 19 | MD5_Update(&md5ctx, str, strlen(str)); | ^~~~~~~~~~ /usr/include/openssl/md5.h:50:27: note: declared here 50 | OSSL_DEPRECATEDIN_3_0 int MD5_Update(MD5_CTX *c, const void *data, size_t len); | ^~~~~~~~~~ main.c:20:5: warning: 'MD5_Final' is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations] 20 | MD5_Final(result, &md5ctx); | ^~~~~~~~~ /usr/include/openssl/md5.h:51:27: note: declared here 51 | OSSL_DEPRECATEDIN_3_0 int MD5_Final(unsigned char *md, MD5_CTX *c); | ^~~~~~~~~

Substring Evaluation

Testing if the previous output contains the string CORRECT!: True

Final Answer: False