Re: [cryptography] Can there be a cryptographic "dead man switch"?

2012-09-19 Thread coderman
On Wed, Sep 19, 2012 at 4:32 PM, coderman wrote: > ... > presumably you get it to him "securely".[0] s/him/her/. or other; perhaps a trained sea mammal. avoid those honeypot vulns fueled by testosterone... ___ cryptography mailing list cryptography@ra

Re: [cryptography] Can there be a cryptographic "dead man switch"?

2012-09-19 Thread coderman
On Wed, Sep 19, 2012 at 2:08 PM, The Fungi wrote: > ... > And how does the trustee get access to the encrypted form of the > secret? presumably you get it to him "securely".[0] >... If he has a copy of it encrypted with the old key, how do > you ensure he throws it out when you reencrypt with t

Re: [cryptography] Can there be a cryptographic "dead man switch"?

2012-09-19 Thread The Fungi
On 2012-09-19 17:01:02 -0400 (-0400), mhey...@gmail.com wrote: [...] > > If I should die, I will stop re-encrypting the secret and the trustee > > (that I never really trusted) can break the public key and get to the > > secret. [...] And how does the trustee get access to the encrypted form of th

Re: [cryptography] Can there be a cryptographic "dead man switch"?

2012-09-19 Thread Tim Dierks
On Sep 19, 2012, at 4:48 PM, "mhey...@gmail.com" wrote: > Every three months I, the Grantor, encrypt my secret in a new > secret-encrypting-key and place that secret in my box. (I keep my box > away from others - maybe put it in a safe). > > I also encrypt that secret-encrypting key in a public ke

Re: [cryptography] Can there be a cryptographic "dead man switch"?

2012-09-19 Thread Natanael
But you can't revoke his ability to keep bruteforcing the message. - Sent from my tablet Den 19 sep 2012 23:01 skrev "mhey...@gmail.com" : > Doh, don't know why I brought public-key crypto into this. There isn't > a need for it. Just pick, say, an AES key and give the trustee some of > the key's

Re: [cryptography] Can there be a cryptographic "dead man switch"?

2012-09-19 Thread mhey...@gmail.com
Doh, don't know why I brought public-key crypto into this. There isn't a need for it. Just pick, say, an AES key and give the trustee some of the key's bits so they only have to brute force part of the key. On Wed, Sep 19, 2012 at 4:48 PM, mhey...@gmail.com wrote: > On Wed, Sep 5, 2012 at 9:51 AM

Re: [cryptography] abstract: Air to Ground Quantum Key Distribution

2012-09-19 Thread Jeffrey Walton
On Wed, Sep 19, 2012 at 4:48 PM, James A. Donald wrote: > On 9/19/2012 2:17 AM, Zack Weinberg wrote: >> >> I've seen claims that quantum key agreement lets both parties detect a >> man in the middle with no prior communication and no trusted third >> party. If that's true it would obviously be hu

Re: [cryptography] abstract: Air to Ground Quantum Key Distribution

2012-09-19 Thread James A. Donald
On 9/19/2012 2:17 AM, Zack Weinberg wrote: I've seen claims that quantum key agreement lets both parties detect a man in the middle with no prior communication and no trusted third party. If that's true it would obviously be huge. Whispering in someone's ear, or, equivalently, near field commu

Re: [cryptography] Can there be a cryptographic "dead man switch"?

2012-09-19 Thread mhey...@gmail.com
On Wed, Sep 5, 2012 at 9:51 AM, StealthMonger wrote: > -BEGIN PGP SIGNED MESSAGE- > > Can there be a cryptographic "dead man switch"? A secret is to be > revealed only if/when signed messages stop appearing. It is to be > cryptographically strong and not rely on a trusted other party. >

Re: [cryptography] open source cryptanalysis

2012-09-19 Thread Givonne Cirkin
does anyone know of an open source, freeware, GPL, cryptanalysis s/w like evercrack, except for windows? i couldn't find window binaries for evercrack. thanks. g. _ You @ 37.com - The world's easiest free Email address !