================
Libucw contains two cryptographic hash algorithms: MD5 (RFC 1321) and SHA1 (RFC
-3174).
+3174). A SHA1-HMAC (RFC 2104) message authentication is available.
+
+There are non-cryptographic hashes as well.
+
+<<crypto,Cryptographic ones>>:
- <<md5,MD5>>
- <<sha1,SHA1>>
+- <<sha1:sha1_hmac(),SHA1_HMAC>>
- <<usage,Common usage>>
+<<nocrypto,Non-cryptographic ones>>:
+
+- <<strhash,String & block hashes>>
+- <<inthash,Integer hashes>>
+
+[[crypto]]
+Cryptographic hashes
+--------------------
+
[[md5]]
MD5
----
+~~~
!!ucw/md5.h
[[sha1]]
SHA1
-----
+~~~~
!!ucw/sha1.h
[[usage]]
-Usage
------
+Common usage
+~~~~~~~~~~~~
There are two ways you can use the hashing routines.
SHA1 has the same interface, so the same two ways apply.
See also <<string:mem_to_hex()>>.
+
+[[nocrypto]]
+Non-cryptographic hashes
+------------------------
+
+All these functions expect to be moduled by the size of a hash table.
+The size should be a prime number (it gives better distribution).
+
+!!ucw/hashfunc.h