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Diffstat (limited to 'gcc/ada/g-shshco.ads')
| -rw-r--r-- | gcc/ada/g-shshco.ads | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/gcc/ada/g-shshco.ads b/gcc/ada/g-shshco.ads new file mode 100644 index 00000000000..e2f9f9137f4 --- /dev/null +++ b/gcc/ada/g-shshco.ads @@ -0,0 +1,66 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT LIBRARY COMPONENTS -- +-- -- +-- G N A T . S E C U R E _ H A S H E S . S H A 2 _ C O M M O N -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 2009, Free Software Foundation, Inc. -- +-- -- +-- GNAT is free software; you can redistribute it and/or modify it under -- +-- terms of the GNU General Public License as published by the Free Soft- -- +-- ware Foundation; either version 3, or (at your option) any later ver- -- +-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- +-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- +-- or FITNESS FOR A PARTICULAR PURPOSE. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- <http://www.gnu.org/licenses/>. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This package provides supporting code for implementation of the following +-- secure hash functions described in FIPS PUB 180-3: SHA-224, SHA-256, +-- SHA-384, SHA-512. It contains the generic transform operation that is +-- common to the above four functions. The complete text of FIPS PUB 180-3 +-- can be found at: +-- http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf + +-- This is an internal unit and should not be used directly in applications. +-- Use GNAT.SHA* instead. + +package GNAT.Secure_Hashes.SHA2_Common is + + Block_Words : constant := 16; + -- All functions operate on blocks of 16 words + + generic + with package Hash_State is new Hash_Function_State (<>); + + Rounds : Natural; + -- Number of transformation rounds + + K : Hash_State.State; + -- Constants used in the transform operation + + with function Sigma0 (X : Hash_State.Word) return Hash_State.Word is <>; + with function Sigma1 (X : Hash_State.Word) return Hash_State.Word is <>; + with function S0 (X : Hash_State.Word) return Hash_State.Word is <>; + with function S1 (X : Hash_State.Word) return Hash_State.Word is <>; + -- FIPS PUB 180-3 elementary functions + + procedure Transform + (H_St : in out Hash_State.State; + M_St : in out Message_State); + +end GNAT.Secure_Hashes.SHA2_Common; |