How can this be done? - page 2. | Bitcointalksearch.org

BitcoinGirl.Club

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Quote from: nc50lc on October 28, 2022, 05:24:29 AM

You can't post the encrypted messages before the "reveal date" because the recipients will be able to decrypt it right away.

The idea is not to let the recipients to know about using their public key until OP wants to call them to check it was signed for them.

Quote from: Poker Player on October 28, 2022, 04:10:47 AM

But what's the difference in terms of security?

Both signing a bitcoin address and signing using pgp key are secure enough. PGP actually used in military system. ~~The regular email system also use PGP in the back to encrypt the message. From the font we can not see it though.~~

nc50lc

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Quote from: Poker Player on October 28, 2022, 04:10:47 AM

Quote from: BitcoinGirl.Club on October 28, 2022, 04:08:46 AM

-snip-

I actually used that once like three years ago. As far as I can remember, it wasn't complicated. But what's the difference in terms of security?

You wont be able to use that in the use-case described in the OP.
You can't post the encrypted messages before the "reveal date" because the recipients will be able to decrypt it right away.
Your first option, Bitcoin signed message will work since you can immediately post the valid signature for the message that isn't revealed yet.

Poker Player

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Quote from: BitcoinGirl.Club on October 28, 2022, 04:08:46 AM

Fuck you all 😘
Maybe you thinks it's complicated hearing those complicated words encrypt/decrypt 😂
It's meant to be easy but not sure why you think it's complected LOL
Load precipitants public key and sign the message. You need only recipients public key. It's as simple as sending an email.

I actually used that once like three years ago. As far as I can remember, it wasn't complicated. But what's the difference in terms of security?

BitcoinGirl.Club

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Fuck you all 😘
Maybe you thinks it's complicated hearing those complicated words encrypt/decrypt 😂
It's meant to be easy but not sure why you think it's complected LOL
Load precipitants public key and sign the message. You need only recipients public key. It's as simple as sending an email.

NeuroticFish

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Quote from: Poker Player on October 27, 2022, 09:58:22 PM

Would that be OK?

Looks good to me for now, we will see for real on the 29th. Wink

I would only add that most probably at start some will be asking why the signature doesn't verify now for the text "Signed message will be revealed on 10/29/2022" Grin

and the format could be a bit more clear, but I am also not sure how to make that indeed better. Maybe write "Signed message will be revealed on 10/29/2022" before "-----BEGIN BITCOIN SIGNED MESSAGE-----"?
On the other hand, you can just send them to initial post by LoyceV and/or to this topic.

Poker Player

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Quote from: Stalker22 on October 27, 2022, 06:12:36 PM

Quote from: BitcoinGirl.Club on October 27, 2022, 12:28:26 PM

Option 3: Use your PGP key! It's more secure than any of the options above. Here is how I will do it.
~

This is overcomplicated and unnecessary for the case described by Poker Player.

I was going to ask, what is the difference in terms of security? Like 0,001% of being hacked if I use a signed message and 0,00000001% if I use PGP? Because in that case I would use the signed message, which seems to me more simple, although I find it quite interesting the different options. (I just used random numbers)

Let's do an experiment:

-----BEGIN BITCOIN SIGNED MESSAGE-----
Signed message will be revealed on 10/29/2022
-----BEGIN SIGNATURE-----
IIVa9HxfBRnnOFfks0sRBqlK5vd9tOzh6zgA6L6OFLfjCedQocGY6jxeg7tJLAnPKJrAk0RCf1rV6A6 ZSALY9tA=
-----END BITCOIN SIGNED MESSAGE-----
Address staked here.

Would that be OK?

Stalker22

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Quote from: BitcoinGirl.Club on October 27, 2022, 12:28:26 PM

Option 3: Use your PGP key! It's more secure than any of the options above. Here is how I will do it.
~

This is overcomplicated and unnecessary for the case described by Poker Player. He wants to make the message public after a certain event, so there is no need to encrypt the message. It is sufficient to sign or hash a message and publish its signature/hash in advance, so that anyone can verify, and you don't depend on one or two forum members to confirm the authenticity of your message.

Poker Player, if you want to add a timestamp to your message, I suggest that you incorporate the block number and the nonce from the last mined block into the message. When you publish the signature/hash of the message, you also publish the block number and nonce that will be in the message. That way, you will have another provable way of confirming when the message was created.

BitcoinGirl.Club

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Quote from: NeuroticFish on October 27, 2022, 09:17:16 AM

Option 1. You can use LoyceV bot for the job by sending it a PM and make sure that you set the delay for publishing/revealing if you don't want the default of 7 days. The drawback is that LoyceV can see the original message from second 1.

Option 2. You do it yourself. Make the message, sign it, publish the signature and the address. When the time comes, write another post (don't edit the first), and this time post the full message, the address and the signature.
People will be able to compare the signature with the initial one and they can also verify the message; if it's the original message indeed, the signature will be verified.

I really like this fucking game, I really do 🤣

Option 3: Use your PGP key! It's more secure than any of the options above. Here is how I will do it.

I will find two or more random regular users from the forum. Since it's a secret I will not let them know that I picked them. For example I am going to pick OmegaStarScream and nutildah. I know their PGP public key. Now I am going to encrypt the message that I want only them to know (of course in your case you will let them know later).

Code:

Without decrypting it no one will ever know the real message.

OmegaStarScream and nutildah mind to revealing the message?

Quote from: BitcoinGirl.Club on November 24, 2021, 03:42:56 AM

Code:

nc50lc

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Alternatively, it can be done by providing the criteria's hash beforehand.
The hash can prove that you have not changed the criteria since everyone can compute the its hash once it's revealed.
I'd recommend SHA256 for this.

For example, the criteria is:

Code:

1. very big
2. very yellow
3. very good

If you compute the SHA256 hash of the criteria (as text, exactly as written above), you'll get: 63203a91c71aea8bdbfbdb62926c83a65df94c660721209b9b9f5b8ce4b522aa
When you revealed the criteria, users can verify if it's really the criteria that you've used by checking if its SHA256 hash matched the one you've provided beforehand.

Note: Some sha256 tools parse the new lines (enter) as space and some omit it;
so during the criteria reveal, it's best to suggest open-source hashing tools to have a consistent result, eg: github.com/emn178/online-tools (has a web version).

LoyceV

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Quote from: Poker Player on October 27, 2022, 09:00:02 AM

as in a signed message that cannot be deciphered until a later date, if I understood correctly what LoyceV did.

I used NeuroticFish's "Option 2": by posting the signature, I could prove the message was the original later on. I used my own bot for it, but you could just post it by yourself if you want.
You're free to use my bot. I don't know anything about poker, so I won't take part in this.

NeuroticFish

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Option 1. You can use LoyceV bot for the job by sending it a PM and make sure that you set the delay for publishing/revealing if you don't want the default of 7 days. The drawback is that LoyceV can see the original message from second 1.

Option 2. You do it yourself. Make the message, sign it, publish the signature and the address. When the time comes, write another post (don't edit the first), and this time post the full message, the address and the signature.
People will be able to compare the signature with the initial one and they can also verify the message; if it's the original message indeed, the signature will be verified.

Poker Player

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https://bitcointalksearch.org/topic/m.60022386

As I commented in a thread in Meta, I am thinking of giving a prize for the best analysis of a poker hand.

As an analysis has a certain component of subjectivity, I would like to make clear the criteria I will use without revealing it.

That is to say, in the OP I will explain what is central to the analysis, but the criteria for evaluating the best analysis I would like to leave it written down somewhere in an encrypted manner if possible, as in a signed message that cannot be deciphered until a later date, if I understood correctly what LoyceV did.

That way I could not be told that I have given the award to whom I like or dislike, but on the basis of objective criteria, written and encrypted in advance.

Topic: How can this be done? - page 2. (Read 537 times)