| Name : perl-Digest-SHA-PurePerl
| |
| Version : 5.95
| Vendor : obs://build_opensuse_org/devel:languages:perl
|
| Release : 1.1
| Date : 2015-02-10 15:28:53
|
| Group : Development/Libraries/Perl
| Source RPM : perl-Digest-SHA-PurePerl-5.95-1.1.src.rpm
|
| Size : 0.07 MB
| |
| Packager : (none)
| |
| Summary : Perl implementation of SHA-1/224/256/384/512
|
Description :
Digest::SHA::PurePerl is written entirely in Perl. If your platform has a C
compiler, you should install the functionally equivalent (but much faster)
the Digest::SHA manpage module.
The programming interface is easy to use: it\'s the same one found in CPAN\'s
the Digest manpage module. So, if your applications currently use the
Digest::MD5 manpage and you\'d prefer the stronger security of SHA, it\'s a
simple matter to convert them.
The interface provides two ways to calculate digests: all-at-once, or in
stages. To illustrate, the following short program computes the SHA-256
digest of \"hello world\" using each approach:
use Digest::SHA::PurePerl qw(sha256_hex);
$data = \"hello world\";
AATTfrags = split(//, $data);
$digest1 = sha256_hex($data);
$state = Digest::SHA::PurePerl->new(256);
for (AATTfrags) { $state->add($_) }
$digest2 = $state->hexdigest;
print $digest1 eq $digest2 ?
\"whew!\
\" : \"oops!\
\";
To calculate the digest of an n-bit message where _n_ is not a multiple of
8, use the _add_bits()_ method. For example, consider the 446-bit message
consisting of the bit-string \"110\" repeated 148 times, followed by \"11\".
Here\'s how to display its SHA-1 digest:
use Digest::SHA::PurePerl;
$bits = \"110\" x 148 . \"11\";
$sha = Digest::SHA::PurePerl->new(1)->add_bits($bits);
print $sha->hexdigest, \"\
\";
Note that for larger bit-strings, it\'s more efficient to use the
two-argument version _add_bits($data, $nbits)_, where _$data_ is in the
customary packed binary format used for Perl strings.
The module also lets you save intermediate SHA states to disk, or display
them on standard output. The _dump()_ method generates portable,
human-readable text describing the current state of computation. You can
subsequently retrieve the file with _load()_ to resume where the
calculation left off.
To see what a state description looks like, just run the following:
use Digest::SHA::PurePerl;
Digest::SHA::PurePerl->new->add(\"Shaw\" x 1962)->dump;
As an added convenience, the Digest::SHA::PurePerl module offers routines
to calculate keyed hashes using the HMAC-SHA-1/224/256/384/512 algorithms.
These services exist in functional form only, and mimic the style and
behavior of the _sha()_, _sha_hex()_, and _sha_base64()_ functions.
use Digest::SHA::PurePerl qw(hmac_sha256_hex);
print hmac_sha256_hex(\"Hi There\", chr(0x0b) x 32), \"\
\";
|
RPM found in directory: /packages/linux-pbone/ftp5.gwdg.de/pub/opensuse/repositories/devel:/languages:/perl/openSUSE_13.2/noarch |
Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server
Provides :
perl(Digest::SHA::PurePerl)
perl-Digest-SHA-PurePerl
Requires :
