[Cryptography Team] 2 failing tests using CBC

[Ron Teitelbaum]

That's terrific Rob!

Great work!!

Ron

> From: Robert Withers
> 
> Never mind, I found it.  There is new code in
> BlockCipherMode>>#vector: which destroys the vector getting
> replaced.  I was using the same ByteArray to initialize both the
> encryptor and decryptor, and it was getting destroyed before the
> decryptor could use it.
> 
> All tests, 90 of em, pass.  All is green.
> 
> Rob
> 
> On Mar 30, 2007, at 8:09 PM, Robert Withers wrote:
> 
> > I was running the unit tests and I noticed that 2 of my own tests
> > are now failing.  This wasn't the case 6 months ago.  One test is
> > for DES-CBC and the other is for TripleDES-CBC.  Did some code
> > change in this area recently?
> >
> > Here is a little detail for the test #testDESCBC
> >
> > startBuffer = a ByteArray(1 35 69 103 137 171 205 231)
> > 1st encrypt = a ByteArray(157 97 0 32 114 216 222 93)
> > 1st decrypt = a ByteArray(1 50 103 84 205 254 171 144)
> > 2nd encrypt = a ByteArray(14 235 75 121 46 119 224 35)
> > 2nd decrypt = a ByteArray(1 50 103 84 205 254 171 144)
> >
> > What is strange is that while the 1st decrypt is different than the
> > startBuffer, the 2nd decrypt equals the first decrypt.  This is
> > true even though the corresponding encrypts are different.  Anyway,
> > the 1st decrypt is sufficient to show a problem.
> >
> > Could someone look into this who has DES knowledge?
> >
> > I am away for the next week, so I won't be able to respond.
> >
> > thanks,
> > Robert
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