Laravel : "mcrypt_decrypt(): The IV parameter must be as long as the blocksize"

Kousha picture Kousha · May 28, 2014 · Viewed 7.8k times · Source

I ran composer update on a Laravel application, and now I am getting this error:

mcrypt_decrypt(): The IV parameter must be as long as the blocksize

What happened?!

Answer

Kousha picture Kousha · May 29, 2014

I figured this out. All you have to do is clear your cookies, and everything will be A-okay!