40 lines
1.3 KiB
Ada
40 lines
1.3 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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with Crypto_Core_Types; use Crypto_Core_Types;
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with Crypto_Types; use Crypto_Types;
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use Crypto_Types.Crypto_Utils_u8;
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use Crypto_Types.Crypto_Utils_u32;
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package DES_Spec is
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type Context_T is private;
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subtype Key_T is Block_64_Bit;
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subtype Block_T is Block_64_Bit;
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procedure Initialize(Context : out Context_T; Key : in Key_T);
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procedure Encrypt(Context : in Context_T; Block: in out Block_64_Bit);
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procedure Decrypt(Context : in Context_T; Block: in out Block_64_Bit);
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private
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type Context_T is record
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Key : Block_56_Bit;
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end record;
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end DES_Spec;
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