package batteries
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md5=1fd7bddce07cf5d244fc9427f7b5e4d4
sha512=c0f2a0fdc8253e0ea999d8d4c58bfbf32b18d251a2e1d9656bf279de5f01a33e9aabac3af4d95f465f8b671e7711ebd37218043face233340a0c11b08fa62f78
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
.