You never answered, what is it used for? Why do we need to reduce transaction nonce? Maybe you should explain what is the use case of what you are selling! Reducing nonce of transaction is not a normal thing to do, good thing you people have no clue how EC works.😉
this script can reduct the nonce in bitcoin transaction.
example:
You have a public key and output a transaction to another pubkey.
so you have r,s,z of this transaction.
where r,s,z are describe as ecdsa equations : s*k - r*x = z ; where x is out public_key (privatekey) as point,
k is nonce in transaction (we don't know the nonce) but we know the point as r:)
so we can reduct that nonce for example 1 bit down or more to get valid new transaction for this pubkey.
imagine you can collect for example 10 signatures, and reduct them by 2 bit down and put it to lattice attack with information as two bits msb are equal.
are you intresting?