<?php $plaintext = "\x01\x23\x45\x67\x89\xAB\xCD\xEF"; echo "128-bit: ", bin2hex(mcrypt_encrypt('cast-128', "\x01\x23\x45\x67\x12\x34\x56\x78\x23\x45\x67\x89\x34\x56\x78\x9A", $plaintext, 'ecb')), "\n", "80-bit: ", bin2hex(mcrypt_encrypt('cast-128', "\x01\x23\x45\x67\x12\x34\x56\x78\x23\x45\x00\x00\x00\x00\x00\x00", $plaintext, 'ecb')), "\n", "40-bit: ", bin2hex(mcrypt_encrypt('cast-128', str_pad("\x01\x23\x45\x67\x12", 16, "\0"), $plaintext, 'ecb')), "\n"; ?>
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