3
$\begingroup$

Possible Duplicate:
Is SHA-512 bijective when hashing a single 512-bit block?

Is there any guarantee that there are no collisions for all 512-bit input values for SHA-512 (every 512-bit input has a unique output), or just that they are highly improbable and can't be algorithmically deduced?

$\endgroup$

marked as duplicate by poncho, Paŭlo Ebermann Jun 5 '12 at 18:17

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 1
    $\begingroup$ Welcome to Cryptography Stack Exchange. I closed your question as we had a quite similar one (with a good answer) a time ago - the answer is essentially, no, for both parts of your question. $\endgroup$ – Paŭlo Ebermann Jun 5 '12 at 18:18
  • $\begingroup$ It's highly probable that they exist, they're just hard to find. $\endgroup$ – CodesInChaos Jun 6 '12 at 21:46