Generate Secure Hash
How to generate a secure hash
The secure hash is generated by using HMAC hashing algorithm with SHA256 or md5 on a string consisting of (according to sequence):
Secret Key
Detail
Amount
Order ID
For example, if the values for the parameters are as below:
Secret Key
53-784
Detail
Shopping_cart_id_30
Amount
24.50
Order ID
56
The string to be hashed is $str = 53-784Shopping_cart_id_3024.5056 which will generate the hash value of :
md5($str) => 0bde51ff340f110ab7331a902aa969e7
hash_hmac(‘SHA256′, $str, ’53-784’) => 74422328b44d30bf150fffbae89bbb42b885f9ac0960e2a3ddccc0cf9aa48e39
How to verify if the secure hash is correct
1. Merchants will need to generate the secure hash and compare the secure hash that was received from senangPay.
2. For example if the parameters received from senangPay are as below:
secret key
53-784
status_id
1
order_id
56
transaction_id
14363538840
msg
Payment_was_successful
3. The string to be hashed is $str = 53-78415614363538840Payment_was_successful which will generate the hash value of :
md5($str) => 69686562c29ad3f7955b1843a5c275ca
hash_hmac(‘SHA256′, $str, ’53-784’) => 4ca7837c6c4ddb5f6ba573ea701235b2d04bc6400d32787539e07aaf319eb70f
4. Now you need to compare the hash value that you have generated with the hash value sent from senangPay. If the values do not match, the data may have been tampered with. Please contact [email protected] for further assistance.
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