Messages in this thread | | | From | (David Wagner) | Subject | Re: dm-crypt, new IV and standards | Date | Thu, 4 Mar 2004 17:44:25 +0000 (UTC) |
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Jean-Luc Cooke wrote: >Like you said, CBC is not trivial to temper with - though it is do able. CTR >is trivial on the other hand. Which is why NIST and every cryptographer will >recommend using a MAC with CTR. (Why still have CTR? Unlike CBC, you can >compute the N+1-th block without needing to know the output from the N-th >block, so there is the possibility for very high parallelizum).
I'm worried about the potential for confusion, so let me clarify: Good cryptographers will recommend using a MAC, whether you use CTR, CBC, or CFB. The need for a MAC is not specific to CTR; CBC is not exempt. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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