wok diff perl-crypt-cbc/description.txt @ rev 24923
mutt: addgroup mail only when not already existing
author | Hans-G?nter Theisgen |
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date | Tue Apr 12 16:45:14 2022 +0100 (2022-04-12) |
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1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/perl-crypt-cbc/description.txt Tue Apr 12 16:45:14 2022 +0100 1.3 @@ -0,0 +1,17 @@ 1.4 +This module is a Perl-only implementation of the cryptographic 1.5 +cipher block chaining mode (CBC). 1.6 +In combination with a block cipher such as AES or Blowfish, 1.7 +you can encrypt and decrypt messages of arbitrarily long length. 1.8 +The encrypted messages are compatible with the encryption format 1.9 +used by the OpenSSL package. 1.10 + 1.11 +To use this module, you will first create a Crypt::CBC cipher 1.12 +object with new(). 1.13 +At the time of cipher creation, you specify an encryption key 1.14 +to use and, optionally, a block encryption algorithm. 1.15 +You will then call the start() method to initialize the encryption 1.16 +or decryption process, crypt() to encrypt or decrypt one or more 1.17 +blocks of data, and lastly finish(), to pad and encrypt the final 1.18 +block. 1.19 +For your convenience, you can call the encrypt() and decrypt() 1.20 +methods to operate on a whole data value at once.