package batteries
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md5=d02c4f044e53edca010de46f9139ce00
sha512=99a5afa3604c4cf0c849c670111d617f7f255acb0da043b73ddffdf0e299948bce52516ee31921f269de6088156c4e0a187e0b931543c6819c6b25966b303281
doc/batteries.unthreaded/BatDigest/index.html
Module BatDigest
Source
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.
Digest.substring s ofs len
returns the digest of the substring of s
starting at character number ofs
and containing len
characters.
Digest.subbytes s ofs len
returns the digest of the subsequence of s
starting at index ofs
and containing len
bytes.
Convert a hexadecimal representation back into the corresponding digest.
If len
is nonnegative, Digest.channel ic len
reads len
characters from channel ic
and returns their digest, or
Note This version of channel
is currently very inefficient if len
< 0 and requires copying the whole input to a temporary file.
Write a digest on the given output.
Write a digest on the given output in hexadecimal.
Read a digest from the given input.
The comparison function for 16-character digest, with the same specification as 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
.