(1/x) Spain's largest online card processor: * XML inside XML * Signing XML as text: cannot use a real XML parser or the signature breaks
-
(2/x) * Using 3DES for no reason * To calculate the HMAC key you need data from *inside* the payload * Their XML namespace isn't a real URL
(3/x) * Signing key is pre-diversified in a dumb way for no reason, reducing entropy * CBC mode with all-0 IV
-
-
(4/x) * Their reference manual is useless (no mention of modes, IVs, etc): only way to interoperate is to reverse engineer their sample API.
-
(5/x) * They have multiple callback mechanisms, but inexplicably the only usable one (positive synchronous confirmation) requires SOAP.
- Show replies
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.