diff --git a/src/main.c b/src/main.c
index a834585..941fee5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,7 @@
+#include <sodium/utils.h>
 #include <stdio.h>
-#include <stdint.h>
 #include <string.h>
+#include <errno.h>
 
 #include "audio.h"
 #include "crypt.h"
@@ -20,25 +21,64 @@ int main(int argc, char **argv) {
         return -1;
     }
 
-    crypt_key_t own;
+    crypt_key_t own, ownr;
 
     if (crypt_key_gen(&own) < 0) {
         fprintf(stderr, "Failed to generate the keys.");
         return -1;
     }
 
-    FILE *fp = fopen("own_pub_key", "w");
-    FILE *fs = fopen("own_sec_key", "w");
+    FILE *fp = fopen("own_pub_key", "w+");
+    FILE *fs = fopen("own_sec_key", "w+");
 
-    crypt_store_public_key(&own, fp);
-    crypt_store_secret_key(&own, fs);
+    if (fp == NULL) {
+        fprintf(stderr, "fp err: %s\n", strerror(errno));
+        return 0;
+    }
+
+    if (fs == NULL) {
+        fprintf(stderr, "fs err: %s\n", strerror(errno));
+        return 0;
+    }
+
+    char phex[CRYPT_PKEY_HEXLEN], shex[CRYPT_SKEY_HEXLEN];
+
+    crypt_key_export_public(&own, phex);
+    crypt_key_export_secret(&own, shex);
+
+    crypt_store_key(&own, fp, fs);
+
+    printf("p1 = [%s]\ns1 = [%s]\n", phex, shex);
+
+
+    fflush(fp);
+    fflush(fs);
+    fseek(fp, 0, SEEK_SET);
+    fseek(fs, 0, SEEK_SET);
+
+    crypt_load_key(&ownr, fp, fs);
+
+    char phexr[CRYPT_PKEY_HEXLEN], shexr[CRYPT_SKEY_HEXLEN];
+
+    crypt_key_export_public(&ownr, phexr);
+    crypt_key_export_secret(&ownr, shexr);
+
+    printf("p2 = [%s]\ns2 = [%s]\n", phexr, shexr);
 
     fclose(fp);
     fclose(fs);
 
+    crypt_key_destroy(&own);
+    crypt_key_destroy(&ownr);
+
+    sodium_memzero(phex, CRYPT_PKEY_HEXLEN);
+    sodium_memzero(phexr, CRYPT_PKEY_HEXLEN);
+    sodium_memzero(shex, CRYPT_SKEY_HEXLEN);
+    sodium_memzero(shexr, CRYPT_SKEY_HEXLEN);
+
     // audio_t aud;
 
-    // uint8_t buf[BUF_SIZE];
+    // unsigned char buf[BUF_SIZE];
     // memset(buf, 0, BUF_SIZE);
 
     // audio_init(&aud, CHANNELS, SAMPLE_RATE, FRAMES_PER_BUFFFER);