54 lines
1.8 KiB
Ada
54 lines
1.8 KiB
Ada
-- Copyright (C) 2015 Daniel Otte <bg@nerilex.org>
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--
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-- This program is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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package body Spritz_Stream is
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procedure Initialize (ctx : out Context; key : in u8_Array) is
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begin
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Spritz.Initialize(Spritz.Context(ctx.ctx));
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Spritz.Absorb(Spritz.Context(ctx.ctx), key);
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end Initialize;
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procedure Initialize (ctx : out Context; key : in String) is
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begin
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Spritz.Initialize(Spritz.Context(ctx.ctx));
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Spritz.Absorb(Spritz.Context(ctx.ctx), key);
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end Initialize;
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procedure Set_Iv (ctx : in out Context; iv : in u8_Array) is
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begin
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Spritz.AbsorbStop(Spritz.Context(ctx.ctx));
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Spritz.Absorb(Spritz.Context(ctx.ctx), iv);
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end Set_IV;
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procedure Encrypt (ctx : in out Context; data : in out u8_Array) is
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z : u8;
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begin
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for i in data'Range loop
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Spritz.Drip(Spritz.Context(ctx.ctx), z);
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data(i) := data(i) + z;
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end loop;
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end Encrypt;
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procedure Decrypt (ctx : in out Context; data : in out u8_Array) is
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z : u8;
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begin
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for i in data'Range loop
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Spritz.Drip(Spritz.Context(ctx.ctx), z);
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data(i) := data(i) - z;
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end loop;
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end Decrypt;
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end Spritz_Stream; |