| reply to stevech0
Re: securely mixing WEP and WPA - two routers required? quote:
Me, I'd just use WEP128.
Actually it is WEP 104, not 128 but but why bother? WEP 104 bit can be broken using the same tools in the same amount of time as WEP 40 bit. So why bother with the extra bits since you are not concerned about security anyway. |
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| said by whynot40 : quote:
Me, I'd just use WEP128.
Actually it is WEP 104, not 128 but but why bother? WEP 104 bit can be broken using the same tools in the same amount of time as WEP 40 bit. So why bother with the extra bits since you are not concerned about security anyway. Actually, it is both, and they are the same thing. It depends on whether you include the 24 bit initialization vector in the bit count. |
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| quote:
Actually, it is both, and they are the same thing. It depends on whether you include the 24 bit initialization vector in the bit count.
As defined there is a 40 bit or a 104 bit secret key which has the public IV concatenated to it to produce the input for the PRNG. So if you are referring to the key size WEP 104 is correct. If you are in marketing and want to "prove" to your customers that your product you call it WEP 128 without mentioning that the key size is only 104 bits. |
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2 edits | It is referred to both ways in the literature, in user manuals, and in product descriptions. To clarify to people who read this stuff and may become confused,
40 bit is identical to 64 bit WEP, and
104 bit is identical to 128 bit WEP.
It has nothing to do with marketing, unless the marketing person is an idiot. It has to do whether you are describing the raw key that is entered (by a user, for example) or the length of the string of bits as transmitted over the wire. |
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| said by Tom Blue:... unless the marketing person is an idiot... a redundancy of terms? |
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| reply to Tom Blue
quote:
or the length of the string of bits as transmitted over the wire.
Please explain this. I must have missed the part of the 802.11 spec where the 104 bit key is transmitted over the "wire". Only the 24 bit IV is sent and it is not part of the key. As previously described the 40 or 104 bit key is concatenated with the 24 bit IV and used as input to the PRNG which in turn generates the encryption key used in the RC4 algorithm. I would appreciate it if you pointed out where the key or the key concatenated with the IV is transmitted over the "wire". |
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| said by Lasko :
Please explain this. I must have missed the part... Come now... Do you really think anybody gives a shit ? Start a new thread. You are off topic. |
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