File : tigertree.ads
------------------------------------------------------------------------------
-- ADAGIO - ADALID - AENEA. --
-- --
-- Copyright (C) 2003 --
-- A. Mosteo. --
-- --
-- Authors: A. Mosteo. (adagio@mosteo.com) --
-- --
-- If you have any questions in regard to this software, please address --
-- them to the above email. --
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-- This program is free software; you can redistribute it and/or modify --
-- it under the terms of the GNU General Public License as published by --
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-- your option) any later version. --
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-- This program is distributed in the hope that it will be useful, but --
-- WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- General Public License for more details. --
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-- You should have received a copy of the GNU General Public License --
-- along with this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
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-- You are not allowed to use any part of this code to develop a program --
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-- $Id: tigertree.ads,v 1.3 2004/01/21 21:05:48 Jano Exp $
-- Types and functions to instantiate a TigerTree using HashTree.ads
with Acf.Hash.Algorithms.Tiger;
with Acf.Hash.Message_digests;
with Acf.Types;
use Acf.Types;
package TigerTree is
------------------------------------------------------------------------
-- Types --
------------------------------------------------------------------------
type Hash_type is private;
type Hash_context is limited private;
Null_hash : constant Hash_type;
Null_hash_as_bytes : constant Byte_array;
------------------------------------------------------------------------
-- Begin_hash --
------------------------------------------------------------------------
procedure Begin_hash (Context : in out Hash_context);
------------------------------------------------------------------------
-- End_hash --
------------------------------------------------------------------------
function End_hash (Context : in Hash_context) return Hash_type;
------------------------------------------------------------------------
-- Update_hash --
------------------------------------------------------------------------
procedure Update_hash (
Context : in out Hash_context;
Bytes : in Byte_array);
------------------------------------------------------------------------
-- Start_leaf_hash --
------------------------------------------------------------------------
procedure Start_leaf_hash (Context : in out Hash_context);
------------------------------------------------------------------------
-- Start_intermediate_hash --
------------------------------------------------------------------------
procedure Start_intermediate_hash (Context : in out Hash_context);
------------------------------------------------------------------------
-- Start_root_hash --
------------------------------------------------------------------------
procedure Start_root_hash (Context : in out Hash_context)
renames Start_intermediate_hash;
------------------------------------------------------------------------
-- To_hash --
------------------------------------------------------------------------
-- Converts a byte array into a hash
function To_hash (Bytes : in Byte_array) return Hash_type;
------------------------------------------------------------------------
-- To_byte_array --
------------------------------------------------------------------------
-- Returns a Hash as a Byte_array
function To_byte_array (This : in Hash_type) return Byte_array;
------------------------------------------------------------------------
-- To_char_array
------------------------------------------------------------------------
-- Returns a Hash as a string of bytes
function To_char_array (This : in Hash_type) return String;
------------------------------------------------------------------------
-- To_hex --
------------------------------------------------------------------------
-- Hex representation of a hash:
function To_hex (This : in Hash_type) return String;
------------------------------------------------------------------------
-- To_base32 --
------------------------------------------------------------------------
-- Base32 representation of a hash:
function To_base32 (This : in Hash_type) return String;
private
type Hash_type is record
Hash : aliased Acf.Hash.Message_digests.Message_digest;
end record;
Null_hash : constant Hash_type := (
Hash => Acf.Hash.Message_digests.Null_message_digest);
Null_hash_as_bytes : constant Acf.Types.Byte_array (1 .. 24) :=
(others => 0);
type Hash_context is limited record
Context : aliased Acf.Hash.Algorithms.Tiger.Tiger_context;
end record;
end TigerTree;