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Old 2022-01-28, 18:16   #34
Stargate38
 
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I just want to know the exact number that you factored. If you want, you could PM it to me so it doesn't get into anyone else's hands. I'm very good at keeping secrets (i.e. my SSN).

Last fiddled with by Stargate38 on 2022-01-28 at 18:18
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Old 2022-01-28, 18:45   #35
VBCurtis
 
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You have given no reason for wanting to know, and OP has explained why the number is private.

Maybe you should try respecting his reasons, since you (1) contributed nothing to helping him solve his problem, and (2) you being nosy is not his problem.
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Old 2022-01-28, 19:15   #36
Till
 
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I find Stargate's request reasonable because of the first explanation:
Quote:
Originally Posted by Lessiv View Post
I do not hide my identity, it's like a race - a game, who will understand one software mechanism faster.
It is just necessary that this number is NOT in the public domain, so that other participants do not use it


This let me think, too, that after the race is over, it would be safe to publish the number. But afterwards it is
Quote:
Originally Posted by Lessiv View Post
Unfortunately, these numbers are confidential, this is used. for business.
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Old 2022-01-28, 20:10   #37
alpertron
 
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Quote:
Originally Posted by Lessiv View Post
Yes, you're right - it's a RSA modulud (N) [...]
Regarding the legality, there are no violations, keys of this length are no longer used, as evidenced by the service itself that was used by AMAZON (AWS).
For the assistance provided, I am ready to thank the helper.
It is not clear. Are the keys used for business or no longer used?

Last fiddled with by alpertron on 2022-01-28 at 20:11
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Old 2022-01-28, 23:26   #38
frmky
 
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I don't understand all of this interest in the number. Lessiv has clearly stated that they do not wish to reveal the number. They did the work to factor it themselves. They owe us no explanation, and we as a community should respect their wishes.
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Old 2022-01-28, 23:40   #39
chalsall
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"Chris Halsall"
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Quote:
Originally Posted by frmky View Post
I don't understand all of this interest in the number. Lessiv has clearly stated that they do not wish to reveal the number. They did the work to factor it themselves. They owe us no explanation, and we as a community should respect their wishes.
Strongly seconded!

Lessiv asked for advice. And then they might have used that advice (probably along with other advice) to do whatever task it was they had ahead of them.

It is impolite to demand an answer.
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Old 2022-01-29, 03:12   #40
retina
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It's just yet another random semiprime. And a "small" one at that.

It isn't important to know what it is. It has no meaning. It's just a number with no application to associate it with.

I think it would be awesome if Lessiv created a new number, posted it, and pretended it was the original[1]. No one could ever know if it was the original, right? It would have exactly the same meaning, i.e. none. But some people might feel some weird sense of fulfilment about having received it.

And once you have received it, then what do you do? Do you factor it again? Print it out and frame it? Examine it for some hidden message from god?

[1] And better yet, if Lessiv gave different numbers to everyone via PM and then used them for traitor tracing to see who is not trustworthy.
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Old 2022-01-29, 05:57   #41
Lessiv
 
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Friends!
Thank you for your understanding.
So you need to generate new keys?
I just don't understand why?
Anyone can do it and then start looking for these prime numbers.
After all, you can create an infinite number of these keys, and if they lie in the open, then who will use them? :)
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Old 2022-01-29, 06:02   #42
Lessiv
 
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If you need to find some prime numbers for some business, for solving some problem that may come in handy, then all this is understandable, but when the keys are used to encrypt some password or something else, then laying out the keys in the public access is nonsense.
IMHO.
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Old 2022-01-29, 09:37   #43
Lessiv
 
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Quote:
Originally Posted by Stargate38 View Post
I just want to know the exact number that you factored. If you want, you could PM it to me so it doesn't get into anyone else's hands. I'm very good at keeping secrets (i.e. my SSN).
I proved to the person that he has a vulnerability, he took action and already changed the protection.
Due to the fact that these keys have lost their relevance, I am posting for you (for the forum) the public key (decimal) and 2 prime numbers that I found.

mod:
73788286622600480953060374024182725728007907962747872320499079690836721656039\
10627665886086832812684785464907508235368424740650175162288161990851797009961
1:
75138522852797014955715421198309821275092024191943341794728611634747024292123
2:
98203004026520769224140757558983200512408068026418349014161366719262132573707

And you can make the keys (hexadecimal) yourself.

P.S. My message was agreed with the former user of these keys and permission was given to publish them in the public domain.

Last fiddled with by retina on 2022-01-29 at 09:44 Reason: Yucky side scroll from a long number
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Old 2022-01-29, 16:18   #44
VBCurtis
 
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Quote:
Originally Posted by Lessiv View Post
I proved to the person that he has a vulnerability, he took action and already changed the protection.
This explanation is most excellent! Most folks who come in asking to crack RSA-512 are trying to crack a playstation game or something similar- your application is admirable.
Thanks for sharing the "real" reason.
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