[PYTHON-CRYPTO] amkCrypto: Cipher decrypt(string) output

[Jason R. Mastaler]

Andrew Archibald <aarchiba at YAHOO.COM> writes:

> if creating new Blowfish objects is too expensive.  If it's not, you
> should be using triple DES, which will be faster and more secure (if
> prehaps not as sexy[1]) than constantly re-keying Blowfish.

I'm a bit confused by what you are saying here.  I don't mind creating
a new blowfish object to decrypt a piece of ciphertext, but it
seems that to do this I must use both the same key and the same IV
that were used to produce that ciphertext.  Is this correct?

Secondly, why exactly is using triple DES any better than blowfish?
Does not DES3 require re-keying as well?

Thanks.