48 lines
1.7 KiB
Ada
48 lines
1.7 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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with Sha2_Small;
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use Crypto_Types.Crypto_Types_u8;
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use Crypto_Types.Crypto_Types_u32;
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package SHA2_256 is
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type Context_T is private;
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BlockSize_Bits : constant := 512;
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DigestSize_Bits : constant := 256;
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BlockSize_Bytes : constant := (BlockSize_Bits) / 8;
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DigestSize_Bytes : constant := (DigestSize_Bits) / 8;
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subtype Block_T is u8_Array(1 .. BlockSize_Bytes);
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subtype Digest_T is u8_Array(1 .. DigestSize_Bytes);
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procedure Initialize(Context : out Context_T);
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procedure Next_Block(Context : in out Context_T; Block : in Block_T);
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procedure Last_Block(Context : in out Context_T; Block : in u8_Array; Bits : in Integer := -1);
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procedure Get_Digest(Context : in out Context_T; Digest : out Digest_T);
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procedure Hash(Data : in u8_array; Digest : out Digest_T; Bits : in Integer := -1);
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private
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type Context_T is new Sha2_Small.Context_T;
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end SHA2_256;
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