Cipher.getInstance is too slow

问题

I have the following line of code that is taking less than a second on my computer (windows 7) and about 20 seconds on a Redhat server :

Cipher cipher = Cipher.getInstance(TRANSFORMATION);

where TRANSFORMATION is defind as :

private static final String TRANSFORMATION = "Blowfish/ECB/PKCS5Padding";

What could be the source of such behaviour ?

Thanks.

回答1:

Initialization of the Bouncy Castle provider and - probably - a slow /dev/random.

来源：https://stackoverflow.com/questions/21757653/cipher-getinstance-is-too-slow