![]() ![]() The hash attributes for version 3 are as follows: Read more on Hash Collision here: (computer_science) It won’t necessarily happen after generating exactly that number of hashes, but after exhausting all possibilities, we can be sure that we’d find at least one hash in there that verifies at least two different plain texts. Looking at the maximum amount of variations, the total amount of possible character combinations totals 16²º, just a bit over one septillion possibilities. Due to a relatively limited character set (A-F and 0-9), each character space has 16 possibilities, and thus allows for recurring characters within the hash’s 20-character length (not counting parentheses). Take the Version 1 Domino hash as an example. What is Hash Collision? Hash collision occurs when a given hash accidentally returns true when verified against two different strings. It’s a salted hashing algorithm with a much larger space for hash values due to its increased length this makes it far less vulnerable to Hash Collision. This is the current, and latest, hashing algorithm that was made available for use as of Domino 8.0. So, this article will focus on a frequently encountered security misconfiguration that potentially fits three out of 10 on the OWASP list: A2-Broken Authentication and Session Management, A5-Security Misconfiguration, and A6-Sensitive Data Exposure: HTTP Passwords. But authentication is a vast topic in itself. Regarding the Domino Web Server, Access Control Lists and authentication are both key factors in maintaining a secure environment. In these cases, the OWASP (Open Web Security Access Project) Top 10 list is very handy when setting out to properly review risks and vulnerabilities (among other things). One of the most widespread security risks We’ve found in customer environments is a Domino Web Server that remains open to the web. This first installment will start with the outside and focus specifically on an important aspect of web security: how hashing relates to HTTP passwords and web authentication. After all of this, a valid question remains: “Is your environment as secure as possible?” We’ve decided that a blogpost series outlining key aspects of Domino security would be a great way to help you answer that question with a confident “Yes!” And since we’ll be discussing all things security, we’re going to cover securing Domino servers from both the inside and out. Over the past few years we’ve had the opportunity to discuss IBM Domino security at various conferences, as well as exchange views with customers about security in the IBM software space. ![]()
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