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Topic: How to sign a message?! - page 44. (Read 141287 times)

legendary
Activity: 3164
Merit: 1650
Sugars.zone
April 02, 2015, 11:46:09 AM
#28
Thank you soo much dear OP I really managed to sign a message After reading your Post. Because I was in truble before and redsn0w gave me your thread Link.

https://bitcointalksearch.org/topic/could-not-verify-my-sign-message-please-help-me-1009470

And your post proved helpful to me 

I sent you Tips: https://blockchain.info/tx/f97ba8bab5790faa394a7d032207bb6478bdf628dccb06361b73bf4b9b138386
legendary
Activity: 2282
Merit: 1204
The revolution will be digital
March 17, 2015, 07:04:08 PM
#27
19 posts... im in

18uTXyQubfaYrkbQDdaXhzd2ALEY5YN77B

Great post. You made me remember the very first days on this forum. We started almost together to explore this crazy world of bitcoin from two different parts of the world. It is more than a year now. So much has happened in between. I think hilariousandco also started almost at the same time...
copper member
Activity: 1498
Merit: 1480
No I dont escrow anymore.
March 17, 2015, 06:26:15 PM
#26
Added signing with blockchain.info. It includes an example how to post a signed messages on bitcointalk.org with the format suggested by theymos.
copper member
Activity: 1498
Merit: 1480
No I dont escrow anymore.
March 16, 2015, 04:35:55 AM
#25
Thanks for the how to! very good, now i understand what mean sign with a address, and i have noticed that from blockchain.info we can verify and sign address too Cheesy that is great! thank you again

Yes, bc.i is still on my todo list. Since its so popular it will be the next I add. I hope to have time for that tonight.

-snip-

Wow great guide! I wish this was posted earlier so I didn't have to ask a million people to help me sign an address xD. Can you do other tutorials, like transferring an address to another wallet via private key? I remember when I used vanity address it took me literally an hour  to figure what to type and how to transfer. Thanks!

Also can you PM me your address? I want to also send a small too as a thanks to your effort you put into this!

Glad you like it. As Gisado pointed out you can take the address from my profile ( 1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg ). I will probably not do Import / Export tutorials, because there are many combinations and different formats used. Im sure you can get help in tech support[1] (for bitcoin core) or in the alt clients[2] section (for most other wallets) though.

[1] https://bitcointalk.org/index.php?board=4.0
[2] https://bitcointalk.org/index.php?board=37.0
full member
Activity: 168
Merit: 100
Yoohoo
March 16, 2015, 01:53:33 AM
#24
-snip-
But here in case if my account is hacked, the person may edit my post where my bitcoin address is present and I wont have any access to my PMs then. So in this case, I will have to note the post ID and the PM ID to be on a safe side?

That is correct and theymos said in the past that the best way to prevent this is to send a PM with a signed message to DefaultTrust and write down the PM ID. You could even delete the PM afterwards so a hacker can not see it. It is however still in the system and theymos can access it as he also controlls the DefaulTrust account, but never deletes PM send there.

Another way would be in an auction thread, since they can not be edited and not deleted.

What Gisado suggests might also work, but it would give someone else (the person quoting) power to manipulate.

Wow great guide! I wish this was posted earlier so I didn't have to ask a million people to help me sign an address xD. Can you do other tutorials, like transferring an address to another wallet via private key? I remember when I used vanity address it took me literally an hour  to figure what to type and how to transfer. Thanks!

Also can you PM me your address? I want to also send a small too as a thanks to your effort you put into this!
See below.
Well done shorena, ths guide is very good and full of useful information. Do you still own this address 1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg ? A little donation will arrive in minutes Wink, take it just for your efforts in try to keep/help a good community.

Code:
----BEGIN BITCOIN SIGNED MESSAGE-----
Hi redsn0w,
today is 2015.03.15 and I am in control
of the address 1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg
Shorena
-----BEGIN SIGNATURE-----
1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg
INgOLoHP97AbQDN46R6/0Y73SXOW2lcnjaYoppubBY2sCGEqaylfvJrtAlqcN0sm/1v96YHuU7xcEYgKX7wxoQQ=
-----END BITCOIN SIGNED MESSAGE-----
hero member
Activity: 826
Merit: 1000
March 16, 2015, 01:45:34 AM
#23
-snip-
But here in case if my account is hacked, the person may edit my post where my bitcoin address is present and I wont have any access to my PMs then. So in this case, I will have to note the post ID and the PM ID to be on a safe side?

That is correct and theymos said in the past that the best way to prevent this is to send a PM with a signed message to DefaultTrust and write down the PM ID. You could even delete the PM afterwards so a hacker can not see it. It is however still in the system and theymos can access it as he also controlls the DefaulTrust account, but never deletes PM send there.

Another way would be in an auction thread, since they can not be edited and not deleted.

What Gisado suggests might also work, but it would give someone else (the person quoting) power to manipulate.

Wow great guide! I wish this was posted earlier so I didn't have to ask a million people to help me sign an address xD. Can you do other tutorials, like transferring an address to another wallet via private key? I remember when I used vanity address it took me literally an hour  to figure what to type and how to transfer. Thanks!

Also can you PM me your address? I want to also send a small too as a thanks to your effort you put into this!
newbie
Activity: 44
Merit: 0
March 15, 2015, 09:32:31 PM
#22
Thanks for the how to! very good, now i understand what mean sign with a address, and i have noticed that from blockchain.info we can verify and sign address too Cheesy that is great! thank you again
copper member
Activity: 1498
Merit: 1480
No I dont escrow anymore.
March 15, 2015, 07:35:43 PM
#21
-snip-
But here in case if my account is hacked, the person may edit my post where my bitcoin address is present and I wont have any access to my PMs then. So in this case, I will have to note the post ID and the PM ID to be on a safe side?

That is correct and theymos said in the past that the best way to prevent this is to send a PM with a signed message to DefaultTrust and write down the PM ID. You could even delete the PM afterwards so a hacker can not see it. It is however still in the system and theymos can access it as he also controlls the DefaulTrust account, but never deletes PM send there.

Another way would be in an auction thread, since they can not be edited and not deleted.

What Gisado suggests might also work, but it would give someone else (the person quoting) power to manipulate.
full member
Activity: 168
Merit: 100
Yoohoo
March 15, 2015, 03:07:20 PM
#20
An unedited message or post with a bitcoin address can actually help you to recover a hacked account. Theymos mentions this in the thread about restoring accounts[1]. Its not fail safe though.

Regarding PGP, there are probably over 9000 good tutorials. If you find one that works for you thats great. Just be carefull what you download. If you feel you need someone to show you the way, attent a local cryptoparty[2]. I will focus on signatures with bitcoin addresses first and once that todo list is processed start with PGP.


[1] https://bitcointalksearch.org/topic/recovering-hacked-accounts-or-accounts-with-lost-passwords-497545
[2] https://www.cryptoparty.in/

The post you mentioned of Theymos reads as

-----BEGIN BITCOIN SIGNED MESSAGE-----
My account has been hacked/lost. Please reset the email to . The current date is .
-----BEGIN SIGNATURE-----


-----END BITCOIN SIGNED MESSAGE-----

Here is the unedited post where I posted that address: ...
OR
I sent that address to someone in a PM with PM ID#...


-------------------------------------------------------

But here in case if my account is hacked, the person may edit my post where my bitcoin address is present and I wont have any access to my PMs then. So in this case, I will have to note the post ID and the PM ID to be on a safe side?
Make a thread on reputations board (it looks like there is common place to post it) and ask someone to quote it (so even if your post is edited cracker have to crack quoter's account to successfully fool others - and of course, they will notice that it has been edited too.) and lock. I asked mods to move it to Archival to be extra sure. (I don't know if it can be edited after unlocking on Archival boards.)
full member
Activity: 168
Merit: 100
Yoohoo
March 15, 2015, 03:02:03 PM
#19
Awesome thread, very useful and complete tutorial Smiley
also i found this tutorial for PGP (PDF file) , its that right tutorial for use PGP?


~iki
Tutorials here(GNU Privacy Handbook) seem to be official one.
legendary
Activity: 2618
Merit: 1094
March 15, 2015, 02:23:58 PM
#18
An unedited message or post with a bitcoin address can actually help you to recover a hacked account. Theymos mentions this in the thread about restoring accounts[1]. Its not fail safe though.

Regarding PGP, there are probably over 9000 good tutorials. If you find one that works for you thats great. Just be carefull what you download. If you feel you need someone to show you the way, attent a local cryptoparty[2]. I will focus on signatures with bitcoin addresses first and once that todo list is processed start with PGP.


[1] https://bitcointalksearch.org/topic/recovering-hacked-accounts-or-accounts-with-lost-passwords-497545
[2] https://www.cryptoparty.in/

The post you mentioned of Theymos reads as

-----BEGIN BITCOIN SIGNED MESSAGE-----
My account has been hacked/lost. Please reset the email to . The current date is .
-----BEGIN SIGNATURE-----


-----END BITCOIN SIGNED MESSAGE-----

Here is the unedited post where I posted that address: ...
OR
I sent that address to someone in a PM with PM ID#...


-------------------------------------------------------

But here in case if my account is hacked, the person may edit my post where my bitcoin address is present and I wont have any access to my PMs then. So in this case, I will have to note the post ID and the PM ID to be on a safe side?
copper member
Activity: 1498
Merit: 1480
No I dont escrow anymore.
March 15, 2015, 02:05:27 PM
#17
-snip-
Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
Hi redsn0w,
today is 2015.03.15 and I am in control
of the address 1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg
Shorena
-----BEGIN SIGNATURE-----
1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg
INgOLoHP97AbQDN46R6/0Y73SXOW2lcnjaYoppubBY2sCGEqaylfvJrtAlqcN0sm/1v96YHuU7xcEYgKX7wxoQQ=
-----END BITCOIN SIGNED MESSAGE-----

For everyone that tried to verify this, but couldnt get it working on brainwallet. Its missing a "-"
it should be:
Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----

but its:
Code:
----BEGIN BITCOIN SIGNED MESSAGE-----

Every other tool used to verify should not have that problem. I just copied the modified version from bensam123.

Is it safe to connect your account with the bitcoin address? I have heard some people say that they don't want to take the risk of connecting the account as it could be hacked.

An unedited message or post with a bitcoin address can actually help you to recover a hacked account. Theymos mentions this in the thread about restoring accounts[1]. Its not fail safe though.

Regarding PGP, there are probably over 9000 good tutorials. If you find one that works for you thats great. Just be carefull what you download. If you feel you need someone to show you the way, attent a local cryptoparty[2]. I will focus on signatures with bitcoin addresses first and once that todo list is processed start with PGP.


[1] https://bitcointalksearch.org/topic/recovering-hacked-accounts-or-accounts-with-lost-passwords-497545
[2] https://www.cryptoparty.in/
hero member
Activity: 686
Merit: 500
fb.com/Bitky.shop | Bitcoin Merch!Premium Quality!
March 15, 2015, 01:54:43 PM
#16
Awesome thread, very useful and complete tutorial Smiley
also i found this tutorial for PGP (PDF file) , its that right tutorial for use PGP?


~iki
legendary
Activity: 2618
Merit: 1094
March 15, 2015, 01:29:12 PM
#15
Is it safe to connect your account with the bitcoin address? I have heard some people say that they don't want to take the risk of connecting the account as it could be hacked.
sr. member
Activity: 307
Merit: 250
et rich or die tryi
March 15, 2015, 12:32:40 PM
#14
Dude awesome tutorial.
Signing with bitcoin is a pretty secure system and it needs more adoption IMHO, this will hopefuly make it more commonplace.
I was thinking about writing a tutorial for this within the week but you already took my place so TY for saving me some work  Grin
sr. member
Activity: 462
Merit: 251
March 15, 2015, 11:58:37 AM
#13
It's about time someone did this, good job! I've seen people, who had a wallet for months and still didn't know how to sign and verify a message. This thread should remain on top of the section.
full member
Activity: 168
Merit: 100
Yoohoo
March 15, 2015, 11:37:00 AM
#12
Great tutorial, very helpful for newbies who I have seen having trouble understanding the difference between signing a message and signing a post.

Can you make one for 'How to get a PGP Key', as well?
If you use GNU/Linux, this is easy guide. If Windows, use gpg4win. Just follow the instructions from gpg4win, and you're all set.

(Make sure not to use SHA-1 while creating!)
copper member
Activity: 1498
Merit: 1480
No I dont escrow anymore.
March 15, 2015, 09:21:48 AM
#11
Great tutorial, very helpful for newbies who I have seen having trouble understanding the difference between signing a message and signing a post.

Can you make one for 'How to get a PGP Key', as well?

I have added it for the to do list for now, not sure yet.

wow, thank you shorena it was pretty usefull. actually i was looking for something like this

i have one question though. what is the difference between the message signed this way and the one called PGP that i've seen most escrows use and they link to keybase.io website

Note the explanation below is simplified to give a rough idea about PGP. There are many detailed aspects to it that I dont want to go into here.

PGP is used since the early 90's. Its an asymmetric encryption / signature system that is used for a multitude of things now. Its now most commonly used for its intended use, to encrypt and sign mails. The encryption was so powerful that it was against USA law to export the software for a while unless significantly weakened. It had to leave the country via source code printed in a book. This is typically refered to as the crypto wars.

Without going into technical details, the main difference is how people use it. Its more likely for someone here to post a bitcoin address than it is for someone to post a full PGP key. While many of us have several bitcoin addresses to sign something with, you usually only have one or very few PGP keys (1 personal, 1 business, 1 software development, etc.). For PGP there also exists what is called the Web of Trust (WoT). If used correctly it allows you to be 100% sure that the person you are exchanging message with is exactly the person they claim, as in: it has been verified in person by someone you trust and have met in person. The biggest problem with PGP keys is to verify its owner. Same like a bitcoin address anyone can just create a PGP key pair and claim to be Bill Murray.

But, say Bill Murray (B) meets Christoph Waltz (C) in person. They sign each others keys to verify the respective owner. Should I ever meet C I can personally verify C's key and thus know B's key belongs indeed to Bill Murray. These chains are typically longer and form a complex network, the Web of Trust.

Well done shorena, ths guide is very good and full of useful information. Do you still own this address 1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg ? A little donation will arrive in minutes Wink, take it just for your efforts in try to keep/help a good community.

Code:
----BEGIN BITCOIN SIGNED MESSAGE-----
Hi redsn0w,
today is 2015.03.15 and I am in control
of the address 1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg
Shorena
-----BEGIN SIGNATURE-----
1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg
INgOLoHP97AbQDN46R6/0Y73SXOW2lcnjaYoppubBY2sCGEqaylfvJrtAlqcN0sm/1v96YHuU7xcEYgKX7wxoQQ=
-----END BITCOIN SIGNED MESSAGE-----
legendary
Activity: 1778
Merit: 1042
#Free market
March 15, 2015, 06:53:26 AM
#10
Well done shorena, ths guide is very good and full of useful information. Do you still own this address 1Le5jXpxvANv3v5Vfx9FY3XZjHjRm8fvzg ? A little donation will arrive in minutes Wink, take it just for your efforts in try to keep/help a good community.
legendary
Activity: 3402
Merit: 10424
March 15, 2015, 06:46:46 AM
#9
wow, thank you shorena it was pretty usefull. actually i was looking for something like this

i have one question though. what is the difference between the message signed this way and the one called PGP that i've seen most escrows use and they link to keybase.io website
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