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GNU/Linux |
Debian 7.3.0(Wheezy) |
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Digest(3o) |
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Digest − MD5 message digest.
Module Digest
Module
Digest
: sig end
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.
type t = string
The type of digests: 16−character strings.
val string : string -> t
Return the digest of the given string.
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 : Pervasives.in_channel -> int -> t
If 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.
val file : string -> t
Return the digest of the file whose name is given.
val output : Pervasives.out_channel -> t -> unit
Write a digest on the given output channel.
val input : Pervasives.in_channel -> t
Read a digest from the given input channel.
val to_hex : t -> string
Return the printable hexadecimal representation of the given digest.
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Digest(3o) | |