Dear all, I was trying to run some tests on OpenVPN implementation. Realise HMAC computation for Data and Control channel does not match my computation. I have use the same computation on TLS-PRF's HMAC and it matches perfectly. Anyone has any idea what this problem could be? Is it a bug?
The input I use to the HMAC is the "IV || Encrypted (packetID and payload). This is what I understand from OpenVPN Security Overview page. Is this correct? Or there is some pre-processing that I am not aware? Appreciate any help available. Thanks. Regards, Jessica Tan _________________________________________________________________ Hotmail: Trusted email with Microsoft’s powerful SPAM protection. https://signup.live.com/signup.aspx?id=60969
