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Cover image for 31 character password length limit in Mojave

31 character password length limit in Mojave

apetro profile image Andrew Petro ・1 min read

Today I learned that Mojave has a 31 character password limit.

In general I like long random passwords managed in a password manager.

However, there are a few passwords that I find I have to type frequently. The password to access the password manager itself. The single sign-on paasword. These I like to be long passwords easy to remember and type but difficult to brute force.

While the single sign-on system at issue generally supports a longer maximum password length, it turns out using a length longer than 31 characters is a way to lock myself out of my Mac. Trimming the password down to 31 characters fixed it.

Mostly leaving this post as a note to myself for next time.

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