Collaborate Disseminate
For over a year, I’ve had my e-mail address displayed in the README.md on one of my github repos. When accessing it from a browser, it shows up both in the text and as a mailto: link. It doesn’t seem like the e-mail address i… Continue reading Is github doing anything to prevent e-mail scraping?
Say that I have good, collision resistant hash function H. Given a message M, the typical usage is h=H(M) to get it’s hash.
Now, I want to propose two alternative methods of using this hash function, and compare them to the original function. First, I split my message M into equally sized chunks M1, M2, …, Mn.
First method: the hash would be h=H(M1)⊕h(M2)⊕...⊕h(Mn) (⊕ is XOR).
Second method: the hash would be h=H(M1,1)⊕h(M2,2)⊕...⊕h(Mn,n), where comma means concatenation.
Now, it’s obvious that the first hashing method is poor – I can shuffle the chunks around, and add two equal chunks without changing the resulting hash. But what about the second method? Are there any attack vectors? How does it compare to the original hash function?
Continue reading An alternative hashing method, how does it compare? [migrated]
I am slightly worried about getting into trouble…
I have installed Xarp and when I opened it, it started listing IPs. I am on a public network, so would it get flagged on the administrator’s side??
What is the role of Integrity Check Value in Wireless Equivalent Privacy?
Why initialization Vector is sent as a clear message where as Integrity Check Value is sent as a cipher message?
My FTP was hacked, a file has been uploaded and the host suspended the website temporarily. I’m only using an admin page that points to an .xml file (to load and modify the text of my website). I don’t have any databases.
I’m going to ad… Continue reading How can I prevent my FTP from being hacked?