how long is the default key size used by mcrypt_blowfish?
I'm going to use Blowfish cipher for my project in PHP (mcrypt_blowfish). But I have a question regarding the used of mcrypt_blowfish, how long is the deafult key size that was used by this mode of encryption in PHP?? Some other cipher that was support by libmcrypt had a declared key size, like :
MCRYPT_RIJNDAEL_128 --> 128 bit key MCRYPT_RIJNDAEL_192 --> 192 bit key MCRYPT_RC6_128 --> 128 bit key MCRYPT_RC6_192 --> 192 bit key
But how long is the deafult key size for mcrypt_blowfish?? Thx before...
It seems to use a variable key size (it seems there isn't a "default" size) :
"Blowfish has a 64-bit block size and a variable key length from 32 bits up to 448 bits"
Here is an example using a 448 bits key : http://www.php.net/manual/en/function.mcrypt-encrypt.php#96635
Looking on other sites, MCRYPT_BLOWFISH_128, MCRYPT_BLOWFISH_192, MCRYPT_BLOWFISH_256 and MCRYPT_BLOWFISH_448 should work too (didn't try ^^)