46 lines
1.7 KiB
Ada
46 lines
1.7 KiB
Ada
-- Copyright (C) 2015 Daniel Otte <bg@nerilex.org>
|
|
--
|
|
-- 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
|
|
-- the Free Software Foundation, either version 3 of the License, or
|
|
-- (at your option) any later version.
|
|
--
|
|
-- 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.
|
|
--
|
|
-- You should have received a copy of the GNU General Public License
|
|
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
with Crypto_Core_Types; use Crypto_Core_Types;
|
|
with Crypto_Types; use Crypto_Types;
|
|
with Spritz;
|
|
|
|
use Crypto_Types.Crypto_Utils_u8;
|
|
|
|
package Spritz_AEAD is
|
|
|
|
type Context is private;
|
|
|
|
procedure Initialize (ctx : out Context; key : in u8_Array);
|
|
procedure Initialize (ctx : out Context; key : in String);
|
|
procedure Set_Nonce (ctx : in out Context; nonce : in u8_Array);
|
|
procedure Set_Nonce (ctx : in out Context; nonce : in String);
|
|
procedure Add_Header (ctx : in out Context; header : in u8_Array);
|
|
procedure Encrypt_Data (ctx : in out Context; data : in out u8_Array);
|
|
procedure Extract_Tag (ctx : in out Context; tag : out u8_Array);
|
|
procedure Decrypt_Data (ctx : in out Context; data : in out u8_Array);
|
|
|
|
private
|
|
|
|
type state_t is (pre_initialize, pre_nonce, pre_header, pre_data, post_tag);
|
|
type Context is record
|
|
state : state_t := pre_initialize;
|
|
ctx : Spritz.Context;
|
|
offset : Integer range 1 .. Spritz.N / 4;
|
|
buffer : u8_Array(1 .. Spritz.N / 4);
|
|
end record;
|
|
|
|
end Spritz_AEAD;
|