You should search for it on github.
Most code is there.
Most code is there.
Watchout for backdoors.
Topic: Provably fair? (Read 1865 times)
Watchout for backdoors.
What would be the most likely value taken to generate Server Seed in a provably fair game, if the value of random number generated by the script is known.
Please help
Please help
Generate a CPRNG value to use for the server seed, in C# use the RNGCryptoServiceProvider class, random_bytes() in php, and the secrets.() class in python.
If you want to store that server seed to be revealed later in time, you should encrypt it using AES256 or higher with a complex encryption key and stored in a file system outside of the webserver contextual directories (So, don't store any keys in www/html, etc). If you want to get fancy and money is no object, you can buy a hardware device to do it for you (called an HSM).
If you're not concerned with overhead or ease of use, there's no need to keep re-using the same server seed. It just means that you can't reveal the server seed until a later point in time.
What would be the most likely value taken to generate Server Seed in a provably fair game, if the value of random number generated by the script is known.
Please help
Please help
nope.
since it's a known value then it's not random anymore.
I thought he was giving an example of a bunch of random numbers that he was generating. since it's a known value then it's not random anymore.
What about using free API from RANDOM.ORG? Its pretty simple to implement :-)
Check out their API doc at https://api.random.org/json-rpc/1/
They even offer some "ready-made" (but PAID) solutions.
Check out their API doc at https://api.random.org/json-rpc/1/
They even offer some "ready-made" (but PAID) solutions.
This has less to do with random number generation than what OP was looking for; a way to prove that the outcome was not unfairly predetermined. As an example, one could generate a random number for a dice roll that a player bets on, then modify the random number to favor the house when the bet is large after a series of wins to generate a loss and take the player's bet. With a provably fair model, the dice roll can be verified that it wasn't tampered with after the bet was made.
You could use a service like random.org to generate the random number, but when money is involved, it's better to use a random number generator that's not from a 3rd party and uses a cryptographic random number generator. People and organizations are corruptible by money.
nope.
since it's a known value then it's not random anymore.
since it's a known value then it's not random anymore.
Is this random enough?
probably
You should search for it on github.
Most code is there.
Most code is there.
What about using free API from RANDOM.ORG? Its pretty simple to implement :-)
Check out their API doc at https://api.random.org/json-rpc/1/
They even offer some "ready-made" (but PAID) solutions.
Check out their API doc at https://api.random.org/json-rpc/1/
They even offer some "ready-made" (but PAID) solutions.
In general...
A) Pick a random boolean value
B) Generate long random string
C) Combine A and B
D) Hash value of C (using sha256 or sha512)
E) Notify the user of value of D before the game round is played and then the value of C after the game is played.
Recommend that you encrypt the value of C in transit and at rest.
Some will recommend adding client and server seeds to the hash or seeding the random string as well in B.
Avoid weak random number generators. (https://cwe.mitre.org/data/definitions/338.html)
A) Pick a random boolean value
B) Generate long random string
C) Combine A and B
D) Hash value of C (using sha256 or sha512)
E) Notify the user of value of D before the game round is played and then the value of C after the game is played.
Recommend that you encrypt the value of C in transit and at rest.
Some will recommend adding client and server seeds to the hash or seeding the random string as well in B.
Avoid weak random number generators. (https://cwe.mitre.org/data/definitions/338.html)
I'm slowly working on my own game for bitcoin. However, i'm not sure how I can go about making it provably fair. I'm new at coding and everything like that.
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