Re: Two AES encryption modes?

["Housley, Russ" <rhousley@rsasecurity.com>]

Ramana:

NIST has not approved any combined modes yet.

Russ


At 02:15 PM 7/26/2002 -0700, Ramana Yarlagadda wrote:
>Hi, Russ
>
>I have gone through your document. well but the question here is what is 
>it IETF considering as combined mdoe algorithms.
>
>Like you said out of all the algorithms that i know CMM is is the only one 
>which is not patented and the basical algorithms used in that are already 
>approved by NIST. So i am trying to get more information before i consider 
>this.
>
>-thanks
>-ramana
>At 04:41 PM 7/26/02 -0400, Housley, Russ wrote:
>>As one of its authors, I advocate CCM, which is unencumbered by 
>>patents.  There are other alternatives, but you need to be careful of 
>>their patent status.  You can find information about several choices at:
>>         http://csrc.nist.gov/encryption/modes/proposedmodes
>>
>>
>>Russ
>>
>>
>>At 12:54 PM 7/26/2002 -0700, Ramana Yarlagadda wrote:
>>>Hi, Russ
>>>
>>>Thanks for your reply. We are developing AISIC solutions for Security 
>>>applications and as part of this we implement Cryptographic algorithms 
>>>in the hardware.
>>>
>>>ESP v2 talks about the combined mode algorithms and couldn't get any 
>>>information about the algorithms that we must support for this.
>>>
>>>Can you throw some light on this.
>>>
>>>-cheers
>>>-ramana
>>>At 03:19 PM 7/26/02 -0400, Housley, Russ wrote:
>>>>Ramana:
>>>>
>>>>In a separate I-D, I plan to post a specification for using AES-CCM.
>>>>
>>>>For those that are interested, you can learn more about AES-CCM at
>>>>http://csrc.nist.gov/encryption/modes/proposedmodes/ccm/ccm.pdf.
>>>>
>>>>Russ
>>>>
>>>>
>>>>At 01:00 PM 7/24/2002 -0700, Ramana Yarlagadda wrote:
>>>>>Hi all
>>>>>
>>>>>What about the combined modes that AES support?
>>>>>
>>>>>-thanks
>>>>>-ramana