update README

Author: JacobBarthelmeh

pkcs7/README.md

@@ -618,6 +618,26 @@ Q31HIqX6H6JYdgtwHB1ZHaq+XS0lfLEGtsCqKKqTfNC9Q62RUBx7TfPk1w==
 -----END CERTIFICATE-----
 ```
 
+### Creating an SMIME bundle and verifying it
+
+In these example cases the content will be overridden by the content found in the
+SMIME bundle. The smime application creates both a detatched
+(detatched-smime-created.p7s) and a non detatched bundle (smime-created.p7s).
+
+Creating RSA signed bundles:
+
+```
+./smime ../certs/client-key.der ../certs/client-cert.der
+./smime-verify smime-created.p7s ../certs/client-cert.der content.txt
+```
+
+Creating ECC signed bundles:
+
+```
+./smime ../certs/ecc-client-key.der ../certs/client-ecc-cert.der
+./smime-verify detached-smime-created.p7s ../certs/client-ecc-cert.der content.txt
+```
+
 ## Support
 
 Please email wolfSSL support at support@wolfssl.com with any questions about

pkcs7/smime.c

@@ -193,6 +193,10 @@ int main(int argc, char** argv)
         return -1;
     }
 
+#ifdef DEBUG_WOLFSSL
+    wolfSSL_Debugging_ON();
+#endif
+
     if (wolfSSL_Init() != WOLFSSL_SUCCESS) {
         printf("Failure to initialize wolfSSL library\n");
         return -1;
@@ -218,7 +222,7 @@ int main(int argc, char** argv)
 
     /* create detached pkcs7 smime bundle */
     printf("\n");
-    smimeSz = 3072;
+    smimeSz = sizeof(smime);
     memset(smime, 0, smimeSz);
     if (ret == 0)
         ret = Create(smime, &smimeSz, key, keySz, cert, certSz,