124 lines
4.2 KiB
RPMSpec
124 lines
4.2 KiB
RPMSpec
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#
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# spec file for package perl-Digest-SHA-PurePerl (Version 5.50)
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#
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# Copyright (c) 2010 SUSE LINUX Products GmbH, Nuernberg, Germany.
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#
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# All modifications and additions to the file contributed by third parties
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# remain the property of their copyright owners, unless otherwise agreed
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# upon. The license for this file, and modifications and additions to the
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# file, is the same license as for the pristine package itself (unless the
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# license for the pristine package is not an Open Source License, in which
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# case the license is the MIT License). An "Open Source License" is a
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# license that conforms to the Open Source Definition (Version 1.9)
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# published by the Open Source Initiative.
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# Please submit bugfixes or comments via http://bugs.opensuse.org/
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#
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Name: perl-Digest-SHA-PurePerl
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Version: 5.50
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Release: 1
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License: GPL+ or Artistic
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%define cpan_name Digest-SHA-PurePerl
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Summary: Perl implementation of SHA-1/224/256/384/512
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Url: http://search.cpan.org/dist/Digest-SHA-PurePerl/
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Group: Development/Libraries/Perl
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#Source: http://www.cpan.org/authors/id/M/MS/MSHELOR/Digest-SHA-PurePerl-%{version}.tar.gz
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Source: %{cpan_name}-%{version}.tar.bz2
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BuildRequires: perl(FileHandle)
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BuildRequires: perl
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BuildRequires: perl-macros
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Requires: perl(FileHandle)
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BuildRoot: %{_tmppath}/%{name}-%{version}-build
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BuildArch: noarch
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%{perl_requires}
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%description
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Digest::SHA::PurePerl is written entirely in Perl. If your platform has a C
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compiler, you should install the functionally equivalent (but much faster)
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the Digest::SHA manpage module.
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The programming interface is easy to use: it's the same one found in CPAN's
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the Digest manpage module. So, if your applications currently use the
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Digest::MD5 manpage and you'd prefer the stronger security of SHA, it's a
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simple matter to convert them.
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The interface provides two ways to calculate digests: all-at-once, or in
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stages. To illustrate, the following short program computes the SHA-256
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digest of "hello world" using each approach:
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use Digest::SHA::PurePerl qw(sha256_hex);
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$data = "hello world";
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@frags = split(//, $data);
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# all-at-once (Functional style)
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$digest1 = sha256_hex($data);
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# in-stages (OOP style)
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$state = Digest::SHA::PurePerl->new(256);
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for (@frags) { $state->add($_) }
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$digest2 = $state->hexdigest;
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print $digest1 eq $digest2 ?
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"whew!\n" : "oops!\n";
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To calculate the digest of an n-bit message where _n_ is not a multiple of
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8, use the _add_bits()_ method. For example, consider the 446-bit message
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consisting of the bit-string "110" repeated 148 times, followed by "11".
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Here's how to display its SHA-1 digest:
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use Digest::SHA::PurePerl;
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$bits = "110" x 148 . "11";
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$sha = Digest::SHA::PurePerl->new(1)->add_bits($bits);
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print $sha->hexdigest, "\n";
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Note that for larger bit-strings, it's more efficient to use the
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two-argument version _add_bits($data, $nbits)_, where _$data_ is in the
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customary packed binary format used for Perl strings.
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The module also lets you save intermediate SHA states to disk, or display
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them on standard output. The _dump()_ method generates portable,
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human-readable text describing the current state of computation. You can
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subsequently retrieve the file with _load()_ to resume where the
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calculation left off.
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To see what a state description looks like, just run the following:
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use Digest::SHA::PurePerl;
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Digest::SHA::PurePerl->new->add("Shaw" x 1962)->dump;
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As an added convenience, the Digest::SHA::PurePerl module offers routines
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to calculate keyed hashes using the HMAC-SHA-1/224/256/384/512 algorithms.
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These services exist in functional form only, and mimic the style and
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behavior of the _sha()_, _sha_hex()_, and _sha_base64()_ functions.
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# Test vector from draft-ietf-ipsec-ciph-sha-256-01.txt
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use Digest::SHA::PurePerl qw(hmac_sha256_hex);
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print hmac_sha256_hex("Hi There", chr(0x0b) x 32), "\n";
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%prep
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%setup -q -n %{cpan_name}-%{version}
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%build
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%{__perl} Makefile.PL INSTALLDIRS=vendor
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%{__make} %{?_smp_mflags}
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%check
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%{__make} test
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%install
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%perl_make_install
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%perl_process_packlist
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%perl_gen_filelist
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%clean
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%{__rm} -rf %{buildroot}
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%files -f %{name}.files
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%defattr(644,root,root,755)
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%doc Changes README shasum
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%changelog
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