module Digest: sig .. end
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. This module should not be
used for secure and sensitive cryptographic applications. For these
kind of applications more recent and stronger cryptographic
primitives should be used instead.
type t = string;
let compare: (t, t) => int;
Pervasives.compare and the implementation
shared with String.compare. Along with the type t, this
function compare allows the module Digest to be passed as
argument to the functors Set.Make and Map.Make.let string: string => t;
let bytes: bytes => t;
let substring: (string, int, int) => t;
Digest.substring s ofs len returns the digest of the substring
of s starting at index ofs and containing len characters.let subbytes: (bytes, int, int) => t;
Digest.subbytes s ofs len returns the digest of the subsequence
of s starting at index ofs and containing len bytes.let channel: (Pervasives.in_channel, 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.let file: string => t;
let output: (Pervasives.out_channel, t) => unit;
let input: Pervasives.in_channel => t;
let to_hex: t => string;
let from_hex: string => t;
Invalid_argument if the argument is not exactly 32 hexadecimal
characters.