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What amazes me though is how many patents I encounter that have been granted for some of the most obvious, well-known and ordinary techniques we use in the authentication process. In fact, every imaginable aspect of password selection, authentication, storage, and recovery seems to be covered by one or more patents.As the title says, the process of checking for common or weak passwords is patented. In fact, it is covered by quite a few patents: 1.System for controlling access to a secure system by verifying acceptability 2.Specifying a set of forbidden passwords 3.Preventing trivial character combinations 4.Password strength checking method and apparatus… 5.Method and system for proactive password validation 6.Method, system, and storage medium for determining trivial keyboard sequences of proposed passwords 7.Apparatus and method for indicating password quality and variety

Reliably Erasing Data From Flash-Based Solid State Drives