This parameter is used to verify the passbacks for you. Depending on what parameter set you are using, this will either appear as ‘key’ or ‘x_MD5_Hash‘. The MD5 hash is also provided to help you verify the authenticity of INS posts. On INS posts the hash is returned in the md5_hash parameter.
One of the Md5 hash components involves a secret word that can be set by you. To set it, follow these directions:
Setting Your Secret Word:
- Login to your account.
- Click on “Look and Feel” found on your account homepage.
- Enter your secret word into the data field labeled, “Your Secret Word (16 Character Limit)”. As labeled, the only limit is that it must be 16 characters or less.
- Click “Save Changes” when you are finished.
Please read the related article below for more information about the MD5 Specifications.
How do I use the MD5 Hash?
