j"1LAnZuoQdcKCkpDBKQMCgziGMoPC4VQUckM<div class="post">PKCS #5 is used by TrueCrypt (and GPG, I think). If each iteration reduced the difficulty of finding collisions, as bdonlan suggests, then TrueCrypt would be easy to break. You'd just attack the hashing algorithm to find the master key.</div> text/html
https://whatsonchain.com/tx/c2cdbe6fadf3a5b21c5bffa2b0a15a8c693a72eea807d4e86e85cd3623c70f8c