initial import

.hgignore

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+~$
+\.DS_Store$
+sftp-config\.json$
+\.sublime-workspace$
+\.sublime-project$

fulcrm_crypto.admin.inc

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+<?php
+
+function fulcrm_crypto_admin_form_submit( $form, &$form_state ) {
+}
+
+function fulcrm_crypto_admin_form( $form, &$form_state ) {
+    $form[ 'title' ] = array( '#type' => 'item',
+                              '#title' => 'fulcrm Cryptography Settings',
+                              '#description' => '',
+                              );
+
+    $form[ 'actions' ] = array( '#type' => 'actions' );
+    $form[ 'actions' ][ 'save' ] = array( '#type' => 'submit',
+                                          '#value' => t('Save'),
+                                          '#submit' => array( 'fulcrm_crypto_admin_form_submit' ),
+                                          );
+    return $form;
+}
+
+function fulcrm_crypto_admin() {
+    return drupal_get_form( 'fulcrm_crypto_admin_form' );
+}

fulcrm_crypto.info

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+name = fulcrm cryptography
+description = fulcrm cryptography
+core = 7.x
+package = fulcrm
+;files[] = fulcrm_crypto.admin.inc
+configure = admin/config/services/fulcrm/crypto

fulcrm_crypto.install

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+<?php /* -*- php -*- */

fulcrm_crypto.module

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+<?php
+
+function fulcrm_crypto_permission() {
+  return array( 'administer fulcrm crypto' => array( 'title' => t('Administer fulcrm cryptography'),
+                                                    'description' => t('Perform main installation/administration tasks for fulcrm cryptography.'),
+                                                    ),                          
+                );
+}
+
+function fulcrm_crypto_menu() {
+    /*
+    $items[ 'admin/config/services/fulcrm' ] = array( 'page callback' => 'system_admin_menu_block_page',
+                                                      'file' => 'system.admin.inc',
+                                                      'file path' => drupal_get_path('module', 'system'),
+                                                      'title' => 'fulcrm',
+                                                      'description' => 'Configuration integration with fulcrm.org.',
+                                                      'position' => 'right',
+                                                      'access callback' => 'user_access',
+                                                      'access arguments' => array('access administration pages'),
+                                                      );
+   */
+    $items[ 'admin/config/services/fulcrm/crypto' ] = array( 'page callback' => 'fulcrm_crypto_admin',
+                                                             'file' => 'fulcrm_crypto.admin.inc',
+                                                             'title' => 'fulcrm cryptography',
+                                                             'description' => 'Settings for fulcrm.org cryptography.',
+                                                             'access callback' => 'user_access',
+                                                             'access arguments' => array('administer fulcrm crypto'),
+                                                             );
+
+    return $items;
+}
+
+function fulcrm_crypto_object_id_hmac( $object_type, $object_id ) {
+    return drupal_hmac_base64( 'fulcrm:' . strval( $object_id ) . ':' . $object_type, session_id() . drupal_get_hash_salt() );
+}
+
+function fulcrm_crypto_object_id_form_value( $object_type, $object_id ) {
+    return $object_id . ':' . fulcrm_crypto_object_id_hmac( $object_type, $object_id );
+}
+
+function fulcrm_crypto_get_object_id_form_value( $object_type, $form_value ) {
+    $bits = explode( ':', $form_value );
+    if ( count( $bits ) == 2 ) {
+        $object_id = $bits[ 0 ];
+        $hmac = $bits[ 1 ];
+        $real_hmac = fulcrm_crypto_object_id_hmac( $object_type, $object_id );
+
+        if ( hash_equals( $real_hmac, $hmac ) )
+            return $object_id;
+    }
+    return NULL;
+}