Sending Encrypted Text Messages via BlockChain

[Phinnaeus Gage]

Speaking of this...

Someone seemingly sent me such a message to my main public BTC address a while back in block 181957.  I never did figure out what it was supposed to say...

18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.0100111
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01101001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01100011
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01100101
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01001101
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01101001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.0110111
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01100101
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01100011
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.0111001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01100001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.0110011
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.011101
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.0100001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01110101
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.01101001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.011011
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.011001
18TKNbSLTrd3a2W8mtoH5uNzFhWRWNcuHU: 0.8021192

If somebody had shown me this even before my involvement with Bitcoin/this forum, I would have recognized it as binary code within seconds and having the trailing zeros omitted. My message does not incorporate ASCII, although the zeros and ones are relevant.

~Bruno~

[Stardust]

Namecoin is better at this.

[crazy_rabbit]

do not needlessly pollute the blockchain

I relatively agree- but to be honest eventually there will be so many trivial transactions (purchasing chewing gum, metro tickets) that it's hard to argue any attempt to use the protocol for communicating messages really makes a difference. Eventually we will have to deal with an enormous blockchain regardless, the sooner someone figures this out, the better.

[Xenland]

do not needlessly pollute the blockchain

I relatively agree- but to be honest eventually there will be so many trivial transactions (purchasing chewing gum, metro tickets) that it's hard to argue any attempt to use the protocol for communicating messages really makes a difference. Eventually we will have to deal with an enormous blockchain regardless, the sooner someone figures this out, the better.

Good point! The solution is not advocate or shun actions done on the block chain but fix it when it becomes a problem.

[giszmo]

i was thinking of a service the one way or the other and thought of putting data into the receiving addresses as well for the purpose of data transmission. a certain size of prefix code can be generated in no time with vanitygen. if you consider clandestine message exchange of large groups with shared secrets, that would increase the available bits quite dramatically and as the message would be encrypted, the vanity prefix would not raise suspicion.

[Spekulatius]

to advertise your site?(The only BITCOIN class website advertising)
My website http://www.hxtop.com (China's largest of the BITCOIN information website)
If you are willing to go to my website to advertise for your site, you can pay via the BTC remuneration.
My mailbox swemp@qq.com a friend in need with my e-mail communication cooperation process!

[Xenland]

to advertise your site?(The only BITCOIN class website advertising)
My website http://www.hxtop.com (China's largest of the BITCOIN information website)
If you are willing to go to my website to advertise for your site, you can pay via the BTC remuneration.
My mailbox swemp@qq.com a friend in need with my e-mail communication cooperation process!

haha your getting those lames messages too eh?

[Phinnaeus Gage]

Back to my encrypted message.

.0711002
.0821111
.081102
.08402
.05911
.004111
.05202
.0351002
.036101
.087001
.0471101
.0131
.06602

.1140101
.1150002
.19211102
.1651
.135101
.1891
.179011
.1320111
.13811
.146011
.126001
.1431

Let's see how easy I make it to decipher the above.

Strip away all 2s at the end of any transaction amount, for they were only put in place to lock in the 0 which is significant. If I were to do this type of messaging in RL, I would have randomized said 2 with any number between 2 and 9, inclusive.

Now strip away the 0s in the question and the 1s in the answer, for they were only in place to keep the transaction amounts at a minimum. I clearly see now that I could have used 0s in the reply opposed to the 1s, for it's the second paired numbers in each transaction that determines whether its a question or answer. What did I use for the pairings? Two numerical constants: 2.71828... and 3.14156...

Now you are left with only 0s and 1s, albeit not binary code, but some other code (vague hint).

With that, what are these two fictitious rogue individuals relaying?

~Bruno~

[deepceleron]

dumb.

There is no need for this encoding as amounts, you can just generate bitcoin addresses and send them money. A real bitcoin address can certainly send a message, and if you don't need the bitcoins back, one bitcoin address can hold 20 bytes of information itself.

Your message can also be coded, not a cipher, such as "one if by land, two if by sea". As in, today my paragraphs will start "dumb if by land, stupid if by sea".

[cbeast]

Someday there will be Public Service Announcements reminding people not to litter the blockchain. "Give a shit, save a bit."