Hash functions

hashes.md5(string, hex)
hashes.sha1(string, hex)
hashes.sha224(string, hex)
hashes.sha256(string, hex) 
hashes.sha384(string, hex)
hashes.sha512(string, hex)

All of the above functions return a hash string according to the chosen algorithm. By default the raw binary form is returned, most often you will want to pass true as the second parameter to get a nice hex-encoded string.

HMAC functions

hashes.hmac_md5(key, string, hex)
hashes.hmac_sha1(key, string, hex)
hashes.hmac_sha256(key, string, hex)
hashes.hmac_sha512(key, string, hex)

All of the above functions return a hash string according to the chosen algorithm. By default the raw binary form is returned, most often you will want to pass true as the third parameter to get a nice hex-encoded string.

PBKDF2

hashes.scram_Hi_sha1(string, salt, iteration_count)

In trunk (which will become 0.12) the following functions exists:

hashes.pbkdf2_hmac_sha1(string, salt, iteration_count)
hashes.pbkdf2_hmac_sha256(string, salt, iteration_count)

scram_Hi_sha1 is the same function as pbkdf2_hmac_sha1.

Secure equality check

hashes.equals(s1, s2)

This will compare two strings in constant time. Depending on Lua versions and length of the strings, using the equality operator == may introduce timing side channels. Using this function protects against that.