mhash_keygen_s2kDescriptionmhash_keygen_s2k() generates a key of bytes length from a user-given password , using the hash hash . This produces the "Salted S2K" data element described in RFC 2440. This function can be used to compute checksums, message digests, and other signatures. The salt is a random piece of data used to generate the key. To check the key, you must also know the salt , so it's a good idea to append the salt to the key for checking. As long as password is not sent as well, your hash is still secure. In addition, salt has a fixed length of 8 bytes and will be padded with zeros if you supply fewer bytes.
PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing
(Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch).
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