Document wolfSSL_CTX_set_default_passwd_cb and wolfSSL_CTX_set_default_passwd_cb_userdata.

Fixes #6008.

Author: kareem-wolfssl

doc/dox_comments/header_files/ssl.h

@@ -15936,3 +15936,51 @@ WOLFSSL_CIPHERSUITE_INFO wolfSSL_get_ciphersuite_info(byte first,
 */
 int wolfSSL_get_sigalg_info(byte first, byte second,
         int* hashAlgo, int* sigAlgo);
+
+/*!
+    \brief This function will set the password callback in the provided CTX.
+    This callback is used when loading an encrypted cert or key which requires
+    a password.
+
+    \param ctx a pointer to a WOLFSSL_CTX structure, created with
+    wolfSSL_CTX_new().
+    \param cb a function pointer to (*wc_pem_password_cb) that is set to the
+    passwd_cb member of the WOLFSSL_CTX.
+
+    _Example_
+    \code
+    WOLFSSL_CTX* ctx = wolfSSL_CTX_new( protocol method );
+    int PasswordCallBack(char* passwd, int sz, int rw, void* userdata) {
+
+    }
+    …
+    wolfSSL_CTX_set_default_passwd_cb(ctx, PasswordCallBack);
+    \endcode
+
+    \sa wolfSSL_CTX_set_default_passwd_cb_userdata
+*/
+void wolfSSL_CTX_set_default_passwd_cb(WOLFSSL_CTX* ctx,
+                                        wc_pem_password_cb* cb);
+
+/*!
+    \brief This function will set the userdata argument to the passwd_userdata
+    member of the WOLFSSL_CTX structure.
+    This member is passed into the CTX's password callback when called.
+
+    \param ctx a pointer to a WOLFSSL_CTX structure, created with
+    wolfSSL_CTX_new().
+    \param userdata a pointer to userdata which is passed into the
+    password callback.
+
+    _Example_
+    \code
+    WOLFSSL_CTX* ctx = wolfSSL_CTX_new( protocol method );
+    int data;
+    …
+    wolfSSL_CTX_set_default_passwd_cb_userdata(ctx, (void*)&data);
+    \endcode
+
+    \sa wolfSSL_CTX_set_default_passwd_cb
+*/
+void wolfSSL_CTX_set_default_passwd_cb_userdata(WOLFSSL_CTX* ctx,
+                                                   void* userdata);