Digest::SHA1 - Perl interface to the SHA-1 Algorithm
# Functional style use Digest::SHA1 qw(sha1 sha1_hex sha1_base64);
$digest = sha1($data); $digest = sha1_hex($data); $digest = sha1_base64($data);
# OO style use Digest::SHA1;
$ctx = Digest::SHA1->new;
$ctx->add($data); $ctx->addfile(*FILE);
$digest = $ctx->digest; $digest = $ctx->hexdigest; $digest = $ctx->b64digest;
The Digest::SHA1 module allows you to use the NIST SHA-1 message digest algorithm from
within Perl programs. The algorithm takes as input a message of arbitrary
length and produces as output a 160-bit ``fingerprint'' or ``message
digest'' of the input.
The Digest::SHA1 module provide a procedural interface for simple use, as well as an object
oriented interface that can handle messages of arbitrary length and which
can read files directly.
A binary digest will be 20 bytes long. A hex digest will be 40 characters long. A base64 digest will be 27 characters long.
The following functions can be exported from the Digest::SHA1
module. No functions are exported by default.
This function will concatenate all arguments, calculate the SHA-1 digest of this ``message'', and return it in binary form.
Same as sha1(), but will return the digest in hexadecimal
form.
Same as sha1(), but will return the digest as a base64 encoded
string.
The Digest::SHA1 module provide the standard Digest OO-interface. The constructor looks like this:
The constructor returns a new Digest::SHA1 object which encapsulate the state of the SHA-1 message-digest algorithm.
You can add data to the object and finally ask for the digest using the
methods described in Digest.
Digest, Digest::HMAC_SHA1, Digest::MD5
http://www.itl.nist.gov/fipspubs/fip180-1.htm
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
Copyright 1999-2000 Gisle Aas. Copyright 1997 Uwe Hollerbach.
Peter C. Gutmann, Uwe Hollerbach <uh@alumni.caltech.edu>, Gisle Aas <gisle@aas.no>