Crypt::Ctr 0.01

The Crypt::Ctr module offers generic counter mode implementation in pure Perl. The Counter Mode module constructs a stream cipher from a block cipher or cryptographic hash funtion and returns it as an object.

Any block cipher in the Crypt:: class can be used, as long as it supports the blocksize and keysize methods. Any hash function in the Digest:: class can be used, as long as it supports the add method.

SYNOPSIS

 use Crypt::Ctr;

 my $cipher = new Crypt::Ctr $key, 'Crypt::Rijndael';

 my $ciphertext = $cipher->encrypt($plaintext);
 my $plaintext = $cipher->decrypt($ciphertext);

 my $cipher2 = new Crypt::Ctr $key, 'Digest::MD5';

 $ciphertext = $cipher->encrypt($plaintext);
 $plaintext = $cipher->decrypt($ciphertext);


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Requirements:

· Perl