Class type Cryptokit.hash

class type hash = object  end

A hash is a function that maps arbitrarily-long character sequences to small, fixed-size strings.

method add_substring : string -> int -> int -> unit

add_substring str pos len adds len characters from string str, starting at character number pos, to the running hash computation.

method add_string : string -> unit

add_string str adds all characters of string str to the running hash computation.

method add_char : char -> unit

add_char c adds character c to the running hash computation.

method add_byte : int -> unit

add_byte b adds the character having code b to the running hash computation. b must be between 0 and 255 inclusive.

method result : string

Terminate the hash computation and return the hash value for the input data provided via the add_* methods. The hash value is a string of length hash_size characters. After calling result, the hash can no longer accept additional data. Hence, do not call any of the add_* methods after result.

method hash_size : int

Return the size of hash values produced by this hash function, in bytes.

method wipe : unit

Erase all internal buffers and data structures of this hash, overwriting them with zeroes. See Cryptokit.transform.wipe.