Provided by: ocaml-man_5.2.0-3_all 
NAME
Digest.S - The signature for a hash function that produces digests of length hash_length from character
strings, byte arrays, and files.
Module type
Module type Digest.S
Documentation
Module type S
= sig end
The signature for a hash function that produces digests of length hash_length from character strings,
byte arrays, and files.
Since 5.2
type t = string
The type of digests.
val hash_length : int
The length of digests, in bytes.
val compare : t -> t -> int
Compare two digests, with the same specification as compare .
val equal : t -> t -> bool
Test two digests for equality.
val string : string -> t
Return the digest of the given string.
val bytes : bytes -> t
Return the digest of the given byte sequence.
val substring : string -> int -> int -> t
substring s ofs len returns the digest of the substring of s starting at index ofs and containing len
characters.
val subbytes : bytes -> int -> int -> t
subbytes s ofs len returns the digest of the subsequence of s starting at index ofs and containing len
bytes.
val channel : in_channel -> int -> t
Read characters from the channel and return their digest. See Digest.channel for the full specification.
val file : string -> t
Return the digest of the file whose name is given.
val output : out_channel -> t -> unit
Write a digest on the given output channel.
val input : 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.
Raises Invalid_argument if the length of the argument is not hash_length ,
val of_hex : string -> t
Convert a hexadecimal representation back into the corresponding digest.
Raises Invalid_argument if the length of the argument is not 2 * hash_length , or if the arguments
contains non-hexadecimal characters.