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AES Key Wrap the 192bits key

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zeroegg
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PostPosted: Mon May 28, 2007 10:42 pm    Post subject: AES Key Wrap the 192bits key Reply with quote

Hi:

I am investigating the restrictions of wrapping 160bits key with a 128 KEK by AES Key Wrap algorithm. It came to my attention the contents that to be encrypted has to be the size of Nx64 (N>=2). If the content which is another key is 160bits which entails 32bits of paddings--assuming all 0s. Can anybody out here point me to an security vulnerability of this implementation?
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zeroegg
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PostPosted: Tue Jun 05, 2007 9:56 pm    Post subject: Reply with quote

A bit of clarification to my question which seems not stir up interests here Smile. I just want to cryptoanalysis what the AES Key Wrap 128bits applied on a 160bits of Contents , AES( K128, M|0). I vaguely remember AES has some sort of vulnerability that if the padding at the end is 0, namely, because attacker knows the fraction of the contents, it will eventually lead the attacker find the pattern and decode each bit backward. I am not sure if my worries is valid or not. Just needs some clarifications
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