When notification is passed to the app after payumoney processing it sends response hash and we need to compute the hash and match it with the passed in response hash.
I use the following code to compute the expected response hash.
Digest::SHA512.hexdigest([
PAYU_SALT,
notification.transaction_status,
notification.user_defined,
notification.customer_email,
notification.customer_first_name,
notification.product_info,
notification.gross,
notification.invoice,
PAYU_KEY].join("|"))
The hash of the following string is computed
"salt|success|||||||||||||Payment|100.0|1|key"
When I print the following hash it gives
Digest::SHA512.hexdigest([
PAYU_SALT,
notification.transaction_status,
notification.user_defined,
notification.customer_email,
notification.customer_first_name,
notification.product_info,
notification.gross,
notification.invoice,
PAYU_KEY].join("|"))
#⇒ e7b3c5ba00b98aad9186a5e6eea65028a[...]
whereas notification.checksum gives
#⇒ 546f5d23e0cadad2d4158911ef72f095d[...]
So the two hashes don’t match.
I am using the following gem: https://github.com/payu-india/payuindia
I appreciate any help as to why the response hash is not matching. Is there any error in my logic to compute the response hash? Thanks!
ok this was a silly mistake i made. The reason the hash didn't match was beacuse i had a typo with the PAYU test key. At the end i typed small 'u' when it was 'U'. The library is fine and the logic is right. The error was in my side with using wrong key.