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/1d45fd8dad22cfb2e18d9b50232c2fd5e8d94a0b62d8b938f0131d44d60bfada