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xDBM_File(3)	      User Contributed Perl Documentation	  xDBM_File(3)

NAME
       Crypt::xDBM_File	- encrypt almost any kind of dbm file

SYNOPSIS
	use Crypt::xDBM_File;
	use GDBM_File; # remember to only load those you really	want
	use SDBM_File;
	use NDBM_File;
	use Fcntl; # neede by SDBM_File	and NDBM_File

	tie %hash, 'Crypt::xDBM_File', crypt_method, key, 'GDBM_FILE', $filename, &GDBM_WRCREAT, 0640;

	tie %hash, 'Crypt::xDBM_File', 'IDEA', "my_key", 'NDBM_FILE', $filename, O_RDWR|O_CREAT, 0640;

	tie %hash, 'Crypt::xDBM_File', 'DES', "my_key",	'SDBM_FILE', $filename,	O_RDWR|O_CREAT,	0640;

	tie %hash, 'Crypt::xDBM_File', 'Crypt::Blowfish', "my key", 'GDBM_FILE', $filename, &GDBM_WRCREAT, 0640;

DESCRIPTION
       Crypt::xDBM_File	encrypts/decrypts the data in a	gdbm,ndbm,sdbm (and
       maybe even berkeleyDB, but I didn't test	that) file.  It	gets tied to a
       hash and	you just access	the hash like normal.  The crypt function can
       be any of the CPAN modules that use encrypt, decrypt, keysize,
       blocksize (so Crypt::IDEA, Crypt::DES, Crypt::Blowfish, ... should all
       work)

       You can in a single dbm file mix	encryption methods, just be prepared
       to handle the binary muck that you get from trying to decrypt with an
       algorithm different from	the one	a key was originally encrypted in (for
       example if you do a keys	or values, you'll get all of the keys
       regardless of who encrypted them).

       ***IMPORTANT*** Encryption keys (the key	you pass in on the tie line)
       will be padded or truncated to fit the keysize().  Data (the key/values
       of the hash) is padded to fill complete blocks of blocksize().  The
       padding is stripped before being	returned to the	user so	you shouldn't
       need to worry about it (except truncated	keys).	Read the doc that
       comes with crypt	function to get	an idea	of what	these sizes are.  If
       keysize or blocksize returns a zero the default is set to 8 bytes (64
       bits).

AUTHOR
       Eric Estabrooks,	eric@urbanrage.com

SEE ALSO
       perl(1).

perl v5.32.0			  2008-01-03			  xDBM_File(3)

NAME | SYNOPSIS | DESCRIPTION | AUTHOR | SEE ALSO

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