Here are the collection of snippets to do CRUD operation with ZKSforce (Force.com toolkit for iOS).

Remember this is a SOAP based API, there is a new alternative library available from salesforce called MobileSDK for iOS.

Requirements:

1. Storefront Id - Exactly 13 char string
2. HSBC Hash files - Executable files by HSBC
3. CPI hash key - Exactly 32 char string