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|
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Library General Public License. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(** MD5 message digest.
This module provides functions to compute 128-bit ``digests'' of
arbitrary-length strings or files. The digests are of cryptographic
quality: it is very hard, given a digest, to forge a string having
that digest. The algorithm used is MD5.
*)
(** The type of digests: 16-character strings. *)
type t = string
(** Return the digest of the given string. *)
val string: string -> t
(** [Digest.substring s ofs len] returns the digest of the substring
of [s] starting at character number [ofs] and containing [len]
characters. *)
val substring: string -> int -> int -> t
(** [Digest.channel ic len] reads [len] characters from channel [ic]
and returns their digest. *)
external channel: in_channel -> int -> t = "md5_chan"
(** Return the digest of the file whose name is given. *)
val file: string -> t
(** Write a digest on the given output channel. *)
val output: out_channel -> t -> unit
(** Read a digest from the given input channel. *)
val input: in_channel -> t
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