module MD5: Extlib.ExtDigest.Digest
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.
Author(s): Xavier Leroy (Base module), David Rajchenbach-Teller
typet =
string
val string : string -> t
val substring : string -> int -> int -> t
Digest.substring s ofs len
returns the digest of the substring
of s
starting at character number ofs
and containing len
characters.val channel : IO.input -> int -> t
len
is nonnegative, Digest.channel ic len
reads len
characters from channel ic
and returns their digest, or raises
End_of_file
if end-of-file is reached before len
characters
are read. If len
is negative, Digest.channel ic len
reads
all characters from ic
until end-of-file is reached and return
their digest.
Note This version of channel
is currently very inefficient
if len
< 0 and requires copying the whole input to a temporary
file.
val file : string -> t
val output : 'a IO.output -> t -> unit
val input : IO.input -> t
val to_hex : t -> string
val t_of_sexp : Sexplib.Sexp.t -> t
val sexp_of_t : t -> Sexplib.Sexp.t