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/4003fd2c3c0191f2efc57e2f802017aab9fcc668618ffdf7be863ddd6fc3de57