/usr/share/calc/help/sha1 is in apcalc-common 2.12.4.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 | NAME
sha1 - Secure Hash Algorithm (SHS-1 FIPS Pub 180-1)
SYNOPSIS
sha1([arg1 [, val ...]])
TYPES
arg1 any
val any
return HASH or number
DESCRIPTION
The sha1() builtin implements the old Secure Hash Algorithm
(SHA). The SHA is sometimes referenced as SHS. The SHA
is a 160 bit hash.
With no args, sha1() returns the default initial SHA-1 HASH state.
If arg1 is a HASH state and no other val args are given, then the
HASH state is finalized and the numeric value of the hash is given.
If arg1 is a HASH state and one or more val args are given,
then the val args are used to modify the arg1 HASH state.
The new arg1 HASH state is returned.
If arg1 is not a a HASH state, then the initial HASH is
used and modifed by arg1 and any val args supplied. The
return value is the new HASH state.
The following table gives a summary of actions and return values.
Here, assume that 'h' is a HASH state:
sha1() HASH returns initial HASH state
sha1(h) number h is put into final form and the
numeric value of the hash state
sha1(x) HASH modify the initial state by hashing 'x'
sha1(sha1(), x) HASH the same as sha1(x)
sha1(x, y) HASH the same as sha1(sha1(x), y)
sha1(h, x, y) HASH modify state 'h' by 'x' and then 'y'
sha1(sha1(h,x,y)) number numeric value of the above call
EXAMPLE
; base(16)
0xa
; sha1()
sha1 hash state
; sha1(sha1())
0xda39a3ee5e6b4b0d3255bfef95601890afd80709
; sha1("x", "y", "z") == sha1("xyz")
1
; sha1("x", "y", "z") == sha1("xy")
0
; sha1(sha1("this is", 7^19-8, "a composit", 3i+4.5, "hash"))
0xc3e1b562bf45b3bcfc055ac65b5b39cdeb6a6c55
; x = sha1(list(1,2,3), "curds and whey", 2^21701-1, pi())
; x
sha1 hash state
; sha1(x)
0x988d2de4584b7536aa9a50a5749707a37affa1b5
; y = sha1()
; y = sha1(y, list(1,2,3), "curds and whey")
; y = sha1(y, 2^21701-1)
; y = sha1(y, pi())
; y
sha1 hash state
; sha1(y)
0x988d2de4584b7536aa9a50a5749707a37affa1b5
LIMITS
none
LINK LIBRARY
HASH* hash_init(int, HASH*);
void hash_free(HASH*);
HASH* hash_copy(HASH*);
int hash_cmp(HASH*, HASH*);
void hash_print(HASH*);
ZVALUE hash_final(HASH*);
HASH* hash_long(int, long, HASH*);
HASH* hash_zvalue(int, ZVALUE, HASH*);
HASH* hash_number(int, void*, HASH*);
HASH* hash_complex(int, void*, HASH*);
HASH* hash_str(int, char*, HASH*);
HASH* hash_usb8(int, USB8*, int, HASH*);
HASH* hash_value(int, void*, HASH*);
SEE ALSO
ishash, hash
## Copyright (C) 1999-20007 Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc 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 Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL. You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## @(#) $Revision: 30.2 $
## @(#) $Id: sha1,v 30.2 2007/07/05 17:37:41 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/sha1,v $
##
## Under source code control: 1997/03/23 00:01:18
## File existed as early as: 1997
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/
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