[OpenSPARC-T2-DV] / tools / perl-5.8.0 / man / man3 / Crypt::Tea.3

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.\" ========================================================================
.\"
.IX Title "Tea 3"
.TH Tea 3 "2002-09-16" "perl v5.8.0" "User Contributed Perl Documentation"
.SH "NAME"
Tea.pm \- The Tiny Encryption Algorithm in Perl and JavaScript
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
Usage:
.PP
.Vb 7
\&        use Crypt::Tea;
\&        $key = 'PUFgob$*LKDF D)(F IDD&P?/';
\&        $ascii_ciphertext = &encrypt ($plaintext, $key);
\&        ...
\&        $plaintext_again = &decrypt ($ascii_ciphertext, $key);
\&        ...
\&        $signature = &asciidigest ($text);
.Ve
.PP
In \s-1CGI\s0 scripts:
.PP
.Vb 3
\&        use Crypt::Tea;
\&        print &tea_in_javascript;  # now the browser can encrypt
\&        # and decrypt ! see CGI::Htauth.pm for examples ...
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module implements \s-1TEA\s0, the Tiny Encryption Algorithm,
and some Modes of Use, in Perl and JavaScript.
.PP
The \f(CW$key\fR is a sufficiently longish string; at least 17 random 8\-bit
bytes for single encryption.
.PP
As of version 1.34, various Htauth-specific hook routines
have now been moved out into the \fICGI::Htauth.pm\fR module.
.PP
Version 1.43,
#COMMENT#
.PP
(c) Peter J Billam 1998
.SH "SUBROUTINES"
.IX Header "SUBROUTINES"
.ie n .IP "\fIencrypt\fR( $plaintext\fR, \f(CW$key );" 3
.el .IP "\fIencrypt\fR( \f(CW$plaintext\fR, \f(CW$key\fR );" 3
.IX Item "encrypt( $plaintext, $key );"
Encrypts with \s-1CBC\s0 (Cipher Block Chaining)
.ie n .IP "\fIdecrypt\fR( $ciphertext\fR, \f(CW$key );" 3
.el .IP "\fIdecrypt\fR( \f(CW$ciphertext\fR, \f(CW$key\fR );" 3
.IX Item "decrypt( $ciphertext, $key );"
Decrypts with \s-1CBC\s0 (Cipher Block Chaining)
.ie n .IP "\fIbinary2ascii\fR( $a_binary_string );" 3
.el .IP "\fIbinary2ascii\fR( \f(CW$a_binary_string\fR );" 3
.IX Item "binary2ascii( $a_binary_string );"
Provide an ascii text encoding of the binary argument.
If Tea.pm is not being invoked from a \s-1GCI\s0 script,
the ascii is split into lines of 72 characters.
.ie n .IP "\fIascii2binary\fR( $an_ascii_string );" 3
.el .IP "\fIascii2binary\fR( \f(CW$an_ascii_string\fR );" 3
.IX Item "ascii2binary( $an_ascii_string );"
.PD 0
.ie n .IP "\fIasciidigest\fR( $a_string );" 3
.el .IP "\fIasciidigest\fR( \f(CW$a_string\fR );" 3
.IX Item "asciidigest( $a_string );"
.PD
Returns an asciified binary signature of the argument.
.IP "\fItea_in_javascript\fR();" 3
.IX Item "tea_in_javascript();"
Returns a compatible implementation of \s-1TEA\s0 in JavaScript,
for use in \s-1CGI\s0 scripts to communicate with browsers.
.SH "AUTHOR"
.IX Header "AUTHOR"
Peter J Billam <peter@pjb.com.au>,
with thanks also to Neil Watkiss for MakeMaker packaging.
.SH "CREDITS"
.IX Header "CREDITS"
Based on \s-1TEA\s0, as described in
http://www.cl.cam.ac.uk/ftp/papers/djw\-rmn/djw\-rmn\-tea.html ,
and on some help from \fIApplied Cryptography\fR by Bruce Schneier
as regards the modes of use.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
http://www.pjb.com.au/, CGI::Htauth.pm, \fIperl\fR\|(1).
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86530b38 AT	1	.\" Automatically generated by Pod::Man v1.34, Pod::Parser v1.13
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	29	.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to
	30	.\" do unbreakable dashes and therefore won't be available. \(C` and \(C'
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	52	.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
	53	.\" entries marked with X<> in POD. Of course, you'll have to process the
	54	.\" output yourself in some meaningful fashion.
	55	.if \nF \{\
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101	.\}
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129	.\" ========================================================================
130	.\"
131	.IX Title "Tea 3"
132	.TH Tea 3 "2002-09-16" "perl v5.8.0" "User Contributed Perl Documentation"
133	.SH "NAME"
134	Tea.pm \- The Tiny Encryption Algorithm in Perl and JavaScript
135	.SH "SYNOPSIS"
136	.IX Header "SYNOPSIS"
137	Usage:
138	.PP
139	.Vb 7
140	\& use Crypt::Tea;
141	\& $key = 'PUFgob$*LKDF D)(F IDD&P?/';
142	\& $ascii_ciphertext = &encrypt ($plaintext, $key);
143	\& ...
144	\& $plaintext_again = &decrypt ($ascii_ciphertext, $key);
145	\& ...
146	\& $signature = &asciidigest ($text);
147	.Ve
148	.PP
149	In \s-1CGI\s0 scripts:
150	.PP
151	.Vb 3
152	\& use Crypt::Tea;
153	\& print &tea_in_javascript; # now the browser can encrypt
154	\& # and decrypt ! see CGI::Htauth.pm for examples ...
155	.Ve
156	.SH "DESCRIPTION"
157	.IX Header "DESCRIPTION"
158	This module implements \s-1TEA\s0, the Tiny Encryption Algorithm,
159	and some Modes of Use, in Perl and JavaScript.
160	.PP
161	The \f(CW$key\fR is a sufficiently longish string; at least 17 random 8\-bit
162	bytes for single encryption.
163	.PP
164	As of version 1.34, various Htauth-specific hook routines
165	have now been moved out into the \fICGI::Htauth.pm\fR module.
166	.PP
167	Version 1.43,
168	#COMMENT#
169	.PP
170	(c) Peter J Billam 1998
171	.SH "SUBROUTINES"
172	.IX Header "SUBROUTINES"
173	.ie n .IP "\fIencrypt\fR( $plaintext\fR, \f(CW$key );" 3
174	.el .IP "\fIencrypt\fR( \f(CW$plaintext\fR, \f(CW$key\fR );" 3
175	.IX Item "encrypt( $plaintext, $key );"
176	Encrypts with \s-1CBC\s0 (Cipher Block Chaining)
177	.ie n .IP "\fIdecrypt\fR( $ciphertext\fR, \f(CW$key );" 3
178	.el .IP "\fIdecrypt\fR( \f(CW$ciphertext\fR, \f(CW$key\fR );" 3
179	.IX Item "decrypt( $ciphertext, $key );"
180	Decrypts with \s-1CBC\s0 (Cipher Block Chaining)
181	.ie n .IP "\fIbinary2ascii\fR( $a_binary_string );" 3
182	.el .IP "\fIbinary2ascii\fR( \f(CW$a_binary_string\fR );" 3
183	.IX Item "binary2ascii( $a_binary_string );"
184	Provide an ascii text encoding of the binary argument.
185	If Tea.pm is not being invoked from a \s-1GCI\s0 script,
186	the ascii is split into lines of 72 characters.
187	.ie n .IP "\fIascii2binary\fR( $an_ascii_string );" 3
188	.el .IP "\fIascii2binary\fR( \f(CW$an_ascii_string\fR );" 3
189	.IX Item "ascii2binary( $an_ascii_string );"
190	.PD 0
191	.ie n .IP "\fIasciidigest\fR( $a_string );" 3
192	.el .IP "\fIasciidigest\fR( \f(CW$a_string\fR );" 3
193	.IX Item "asciidigest( $a_string );"
194	.PD
195	Returns an asciified binary signature of the argument.
196	.IP "\fItea_in_javascript\fR();" 3
197	.IX Item "tea_in_javascript();"
198	Returns a compatible implementation of \s-1TEA\s0 in JavaScript,
199	for use in \s-1CGI\s0 scripts to communicate with browsers.
200	.SH "AUTHOR"
201	.IX Header "AUTHOR"
202	Peter J Billam <peter@pjb.com.au>,
203	with thanks also to Neil Watkiss for MakeMaker packaging.
204	.SH "CREDITS"
205	.IX Header "CREDITS"
206	Based on \s-1TEA\s0, as described in
207	http://www.cl.cam.ac.uk/ftp/papers/djw\-rmn/djw\-rmn\-tea.html ,
208	and on some help from \fIApplied Cryptography\fR by Bruce Schneier
209	as regards the modes of use.
210	.SH "SEE ALSO"
211	.IX Header "SEE ALSO"
212	http://www.pjb.com.au/, CGI::Htauth.pm, \fIperl\fR\\|(1).