# [RC5] RSA decryption

richard L. King Jr. richardking57 at hotmail.com
Sun Mar 4 16:23:40 EST 2001

```i used a poor example of a proof.
a better proof is depositing the prize money in the bank.

>From: "richard L. King Jr." <richardking57 at hotmail.com>
>To: rc5 at lists.distributed.net
>Subject: Re: [RC5] RSA decryption
>Date: Sun, 04 Mar 2001 13:10:49 -0500
>
>you misunderstand me. they are not trying random keys.
>they are trying random formulas. there is a difference.
>you write a formula that inputs P, Q, IV, and CT. then
>outputs key. you try it on several examples. if it succeds,
>then you have a general solution for unknown keys.
>
>but so far this has not happened.
>
>i can gaurantee that the math hobbiests will find the
>solution to the rsa 128 bit contest billions of years befor
>dnet does. thats why such work is important. sequential
>key cracking has definate speed and energy restraints.
>
>
>
>>From: "Andreas D. Landmark" <andreas.landmark at noxtension.com>
>>To: rc5 at lists.distributed.net
>>Subject: Re: [RC5] RSA decryption
>>Date: Sat, 03 Mar 2001 20:26:25 +0000
>>
>>At 03.03.2001 19:53, you wrote:
>>>i imagine several lay people world wide
>>>are randomly creating formulas and trying
>>>them against public keys and/or the rc5 contest.
>>>it is concievable tha someone could succeed eventually.
>>
>>Well the distributed.net effort is _very_ likely to succeed because of
>>the exhaustive testing that is going on as I'm writing this. This means
>>in simple terms that the clients affiliated with distributed.net and the
>>rc5 project is trying out every possible combination to try to decrypt
>>the rc5 encrypted data we are trying to decrypt.
>>
>>But as you mention several people are probably trying out random
>>keys/solutions, but looking at the possible keys to try
>>(you could say combinations=keys), and the fact that only yesterday
>>distributed.net tried over 160 million of them without success (afaik ;-).
>>The possibility of finding _the_ key without divine intervention is in
>>one word... microscopical...
>>
>>My guess is that distributed.net would be the one to find the key,
>>when is hard to say, but looking at the competition we're lightyears
>>
>>
>>
>>--
>>Andreas D. Landmark / noXtension
>>PGP ID:0xB2BEAE80 / 4096bits
>>Fingerprint:654B 3BCD 1130 9B3A 08BB  AB1A BF72 841D B2BE AE80
>>
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>
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