I need a Sagepay(UK) payment integration expert to update my script from 2.23 to 3.00 protocol.
Upgrade documentation and original script are available from link below. You will be required to provide updates script with AES en/decryption code to fulfill the new protocols.
Script will need to be submitted for testing in live environment before payment is released. Hint, required code changes are below line 191. Should be a 5 minute job for someone with requisite skills.