Query: crypt::des_ede3
OS: debian
Section: 3pm
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
Crypt::DES_EDE3(3pm) User Contributed Perl Documentation Crypt::DES_EDE3(3pm)NAMECrypt::DES_EDE3 - Triple-DES EDE encryption/decryptionSYNOPSISuse Crypt::DES_EDE3; my $ede3 = Crypt::DES_EDE3->new($key); $ede3->encrypt($block);DESCRIPTIONCrypt::DES_EDE3 implements DES-EDE3 encryption. This is triple-DES encryption where an encrypt operation is encrypt-decrypt-encrypt, and decrypt is decrypt-encrypt-decrypt. This implementation uses Crypt::DES to do its dirty DES work, and simply provides a wrapper around that module: setting up the individual DES ciphers, initializing the keys, and performing the encryption/decryption steps. DES-EDE3 encryption requires a key size of 24 bytes. You're probably best off not using this module directly, as the encrypt and decrypt methods expect 8-octet blocks. You might want to use the module in conjunction with Crypt::CBC, for example. This would be DES-EDE3-CBC, or triple-DES in outer CBC mode.USAGE$ede3 = Crypt::DES_EDE3->new($key) Creates a new Crypt::DES_EDE3 object (really, a collection of three DES ciphers), and initializes each cipher with part of $key, which should be at least 24 bytes. If it's longer than 24 bytes, the extra bytes will be ignored. Returns the new object. $ede3->encrypt($block) Encrypts an 8-byte block of data $block using the three DES ciphers in an encrypt-decrypt-encrypt operation. Returns the encrypted block. $ede3->decrypt($block) Decrypts an 8-byte block of data $block using the three DES ciphers in a decrypt-encrypt-decrypt operation. Returns the decrypted block. $ede3->blocksize Returns the block size(8). $ede3->keysize Returns the key size(24).LICENSECrypt::DES_EDE3 is free software; you may redistribute it and/or modify it under the same terms as Perl itself. AUTHOR & COPYRIGHTS Crypt::DES_EDE3 is Copyright 2001 Benjamin Trott, ben@rhumba.pair.com. All rights reserved. perl v5.8.8 2001-09-15 Crypt::DES_EDE3(3pm)
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