I am looking for a program (code or software, called the way you want) that can run totally autonomously, not requiring to be connected to Internet or to have a specific bitcoin software installed (like bitcoind or bitcore or else) and that would permit to generate Bitcoin Address/Private key pairs.
I think that it's called Cold Storage, but not sure about that.
From what I understand, the process of generating a bitcoin address and associated keys starts with randomly selecting a number between 1 and a bit less than 2^256.
I know that this "bitcoin address space" is huge but if I can avoid my random number generator to use the beginning and end of that address space, that would be better. In order to avoid some standard brute force attack.
Ideally, I'm looking for a program that permits to :
generate a bitcoin address/privatekey pair from a given input number
Example : take number 1234568418715843541357415745243574215345887354854857432541 as input and generate the bitcoin adress/keys from that number
generate a bitcoin address/privatekey pair from a given range of the total address space
Example : take as input 15% and 40%, being the start and end percentage of the total address space, and generate a random number in between those limits
That's what I call deterministic, being able to specify a number or a range (or to avoid a range) in order to generate the addresses.
Does anyone knows about such a program?