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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, with *)
(* the special exception on linking described in file ../LICENSE. *)
(* *)
(***********************************************************************)
(* $Id: digest.ml 6044 2003-12-31 14:20:40Z doligez $ *)
(* Message digest (MD5) *)
type t = string
external unsafe_string: string -> int -> int -> t = "caml_md5_string"
external channel: in_channel -> int -> t = "caml_md5_chan"
let string str =
unsafe_string str 0 (String.length str)
let substring str ofs len =
if ofs < 0 || len < 0 || ofs > String.length str - len
then invalid_arg "Digest.substring"
else unsafe_string str ofs len
let file filename =
let ic = open_in_bin filename in
let d = channel ic (-1) in
close_in ic;
d
let output chan digest =
output chan digest 0 16
let input chan =
let digest = String.create 16 in
really_input chan digest 0 16;
digest
let to_hex d =
let result = String.create 32 in
for i = 0 to 15 do
String.blit (Printf.sprintf "%02x" (int_of_char d.[i])) 0 result (2*i) 2;
done;
result
;;
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