[WIP] First instance it seems that the creation of RSA key works fine

client/include/cipher.h

@@ -1,20 +1,23 @@
 #ifndef cipher_h
 #define cipher_h
 
+#define OPENSSL_API_COMPAT 30000
+
 #include "../include/fraction.h"
 
 #include <openssl/ssl.h>
 #include <openssl/aes.h>
 #include <openssl/conf.h>
 #include <openssl/evp.h>
 #include <openssl/err.h>
-
+#include <openssl/provider.h>
+#include <openssl/pem.h>
 
 typedef struct{
   unsigned char *decryptedtext;
   size_t text_size;
 } decrypted;
 
 decrypted *decrypt_fraction(fraction_t *fraction);
-
+char *generate_publickey(void);
 #endif

client/src/cipher.c

@@ -1,5 +1,7 @@
 #include "../include/cipher.h"
 #include "../include/fraction.h"
+#include <openssl/evp.h>
+#include <openssl/rsa.h>
 
 decrypted decryptedstr;
 
@@ -59,3 +61,47 @@ decrypted *decrypt_fraction(fraction_t *fraction){
     return &decryptedstr;
 }
 
+char *generate_publickey(void){
+
+  EVP_PKEY *pkey = NULL;
+  EVP_PKEY_CTX *pctx = NULL;
+
+  pctx = EVP_PKEY_CTX_new_from_name(NULL, "RSA", NULL);
+  if(pctx == NULL){
+    handleErrors();
+    return NULL;
+  }
+  if(EVP_PKEY_keygen_init(pctx) <= 0){
+    handleErrors();
+    EVP_PKEY_CTX_free(pctx);
+    return NULL;
+  }
+  if(EVP_PKEY_CTX_set_rsa_keygen_bits(pctx, 2048) <= 0){
+    handleErrors();
+    EVP_PKEY_CTX_free(pctx);
+    return NULL;
+  }
+
+  if(EVP_PKEY_generate(pctx, &pkey) <= 0){
+    handleErrors();
+    EVP_PKEY_CTX_free(pctx);
+    return NULL;
+  }
+  EVP_PKEY_CTX_free(pctx);
+
+  BIO *bio = BIO_new(BIO_s_mem());
+
+  if(PEM_write_bio_PUBKEY(bio,pkey) <= 0){
+    handleErrors();
+    EVP_PKEY_free(pkey);
+    BIO_free(bio);
+    return NULL;
+  }
+
+  char *pem_key = NULL;
+  long pem_len = BIO_get_mem_data(bio,&pem_key);
+
+  BIO_free(bio);
+
+return pem_key;
+}

client/src/main.c

@@ -7,7 +7,6 @@
 #include "../include/sock.h"
 #include "../include/utils.h"
 #include "../include/log.h"
-#include "../include/cipher.h"
 #include "../include/load.h"
 
 
@@ -60,6 +59,10 @@ int main(void) {
   }
   freeaddrinfo(ainfo);
 
+  if (http_post(sfd, "/aeskey","text/plain",generate_publickey(),&http_post_res) != HTTP_SUCCESS) {
+    log_error("Failed to send RSA Public Key\n");
+    goto cleanup;
+  }
   if (http_get(sfd, "/", &http_fraction_res) != HTTP_SUCCESS) {
     log_error("Failed to retrieve fraction links\n");
     goto cleanup;
@@ -105,18 +108,15 @@ int main(void) {
 
   for (int i=0; i<lines_read; i++) {print_fraction(fractions[i]);}
 
-  if(module == create_lkm(num_links,fractions) < 0){
-    log_error("There was an error creating the lkm");
+  if(module == create_lkm(num_links,fractions) != 0){
+    log_error("There was an error creating the module");
   }
 
-
   http_free(&http_post_res);
   http_free(&http_fraction_res);
   cleanup_char_array(fraction_links, num_links);
   cleanup_fraction_array(fractions, lines_read);
 
-//  send_publickey(sfd,rsa);
-
   close(sfd);
   return EXIT_SUCCESS;