Module description

sh1 -- SHA-1 module

The sh1 module implements the SHA-1 algorithm.

SHA-1 structure

sh1% ( -- n )

Get the required space for a sha1 variable

SHA-1 variable creation, initialisation and destruction

sh1-init ( sh1 -- )

Initialise the sh1

sh1-create ( "<spaces>name" -- ; -- sh1 )

Create a named sha-1 variable in the dictionary

sh1-new ( -- sh1 )

Create a new sha-1 variable on the heap

sh1-free ( sh1 -- )

Free the sha-1 variable from the heap

SHA-1 words

sh1-reset ( sh1 -- )

Reset the SHA-1 state

sh1-update ( c-addr u sh1 -- )

Update the SHA-1 with more data c-addr u

sh1-finish ( sh1 -- u1 u2 u3 u4 u5 )

Finish the SHA-1 calculation, return the sha values

sh1+to-string ( u1 u2 u3 u4 u5 -- c-addr u )

Convert SHA-1 result to the string c-addr u, using the pictured output area

Inspection

sh1-dump ( sh1 -- )

Dump the sh1 variable

Examples

\ ==============================================================================
\
\              sh1_expl - the SHA-1 example in the ffl
\
\               Copyright (C) 2007  Dick van Oudheusden
\  
\ This library is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public
\ License as published by the Free Software Foundation; either
\ version 2 of the License, or (at your option) any later version.
\
\ This library is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY 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 along with this library; if not, write to the Free
\ Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
\
\ ==============================================================================
\ 
\  $Date: 2007-06-08 06:50:00 $ $Revision: 1.1 $
\
\ ==============================================================================

include ffl/sh1.fs

\ Create a SHA-1 variable sh1 in the dictionary

sh1-create sh1

\ Update the variable with data

s" The quick brown fox jumps over the lazy dog" sh1 sh1-update

\ Finish the SHA-1 calculation resulting in 5 unsigned 32 bit words
\ on the stack representing the hash value

sh1 sh1-finish

\ Convert the hash value to a hex string and print

sh1+to-string type cr



\ Create a SHA-1 variable on the heap

sh1-new value sh2

\ Update the variable with multiple data

s" The quick brown fox " sh2 sh1-update
s" jumps over the lazy dog" sh2 sh1-update

\ Finish the calculation

sh2 sh1-finish

\ Convert the hash value to a hex string and print

sh1+to-string type cr

\ Free the variable from the heap

sh2 sh1-free

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