diff options
Diffstat (limited to 'gcc/ada/g-sha1.ads')
| -rw-r--r-- | gcc/ada/g-sha1.ads | 101 |
1 files changed, 18 insertions, 83 deletions
diff --git a/gcc/ada/g-sha1.ads b/gcc/ada/g-sha1.ads index 36e2e25d853..39132054ddf 100644 --- a/gcc/ada/g-sha1.ads +++ b/gcc/ada/g-sha1.ads @@ -6,7 +6,7 @@ -- -- -- S p e c -- -- -- --- Copyright (C) 2002-2006, AdaCore -- +-- 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- -- @@ -16,8 +16,8 @@ -- 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 distributed with GNAT; see file COPYING. If not, write -- --- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- --- Boston, MA 02110-1301, USA. -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- -- -- -- As a special exception, if other files instantiate generics from this -- -- unit, or you link this unit with other files to produce an executable, -- @@ -31,86 +31,21 @@ -- -- ------------------------------------------------------------------------------ --- This package implements the US Secure Hash Algorithm 1 (SHA1) as described --- in RFC 3174. The complete text of RFC 3174 can be found at: +-- This package implaments the SHA-1 secure hash function as decsribed in +-- FIPS PUB 180-3. The complete text of FIPS PUB 180-3 can be found at: +-- http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf --- http://www.ietf.org/rfc/rfc3174.txt +-- See the declaration of GNAT.Secure_Hashes.H in g-sechas.ads for complete +-- documentation. --- Note: the code for this unit is derived from GNAT.MD5 +with GNAT.Secure_Hashes.SHA1; +with System; -with Ada.Streams; -with Interfaces; - -package GNAT.SHA1 is - - type Context is private; - -- This type holds the five-word (20 byte) buffer H, as described in - -- RFC 3174 (6.1). Its initial value is Initial_Context below. - - Initial_Context : constant Context; - -- Initial value of a Context object. May be used to reinitialize - -- a Context value by simple assignment of this value to the object. - - procedure Update - (C : in out Context; - Input : String); - procedure Wide_Update - (C : in out Context; - Input : Wide_String); - procedure Update - (C : in out Context; - Input : Ada.Streams.Stream_Element_Array); - -- Modify the Context C. If C has the initial value Initial_Context, - -- then, after a call to one of these procedures, Digest (C) will return - -- the Message-Digest of Input. - -- - -- These procedures may be called successively with the same context and - -- different inputs, and these several successive calls will produce - -- the same final context as a call with the concatenation of the inputs. - - subtype Message_Digest is String (1 .. 40); - -- The string type returned by function Digest - - function Digest (C : Context) return Message_Digest; - -- Extracts the Message-Digest from a context. This function should be - -- used after one or several calls to Update. - - function Digest (S : String) return Message_Digest; - function Wide_Digest (W : Wide_String) return Message_Digest; - function Digest - (A : Ada.Streams.Stream_Element_Array) return Message_Digest; - -- These functions are equivalent to the corresponding Update (or - -- Wide_Update) on a default initialized Context, followed by Digest - -- on the resulting Context. - -private - - -- Magic numbers - - Initial_H0 : constant := 16#67452301#; - Initial_H1 : constant := 16#EFCDAB89#; - Initial_H2 : constant := 16#98BADCFE#; - Initial_H3 : constant := 16#10325476#; - Initial_H4 : constant := 16#C3D2E1F0#; - - type H_Type is array (0 .. 4) of Interfaces.Unsigned_32; - - Initial_H : constant H_Type := - (0 => Initial_H0, - 1 => Initial_H1, - 2 => Initial_H2, - 3 => Initial_H3, - 4 => Initial_H4); - - type Context is record - H : H_Type := Initial_H; - Buffer : String (1 .. 64) := (others => ASCII.NUL); - Last : Natural := 0; - Length : Natural := 0; - end record; - - Initial_Context : constant Context := - (H => Initial_H, - Buffer => (others => ASCII.NUL), Last => 0, Length => 0); - -end GNAT.SHA1; +package GNAT.SHA1 is new GNAT.Secure_Hashes.H + (Block_Words => GNAT.Secure_Hashes.SHA1.Block_Words, + State_Words => 5, + Hash_Words => 5, + Hash_Bit_Order => System.High_Order_First, + Hash_State => GNAT.Secure_Hashes.SHA1.Hash_State, + Initial_State => GNAT.Secure_Hashes.SHA1.Initial_State, + Transform => GNAT.Secure_Hashes.SHA1.Transform); |