[Feature] Adding a pseudorandom number generator function to ChaCha that takes in Aleo Address and a uint64 as parameters to generate extremely unrepeatable unique IDs about leo HOT 2 OPEN

The Aleo Virtual Machine (snarkVM) allows users to seed the ChaCha::rand function with user-defined data. This functionality needs to be added to Leo.

Note that the AVM seeds the default implementation with the transition ID, which is a field element. The probability of repetition is approximately 2^(-253) which is already lower than the above threshold.

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The Aleo Virtual Machine (snarkVM) allows users to seed the ChaCha::rand function with user-defined data. This functionality needs to be added to Leo.

Note that the AVM seeds the default implementation with the transition ID, which is a field element. The probability of repetition is approximately 2^(-253) which is already lower than the above threshold.

That might be true but assuming the same contract is used over the entire lifetime of the dapp, then the probability of repeats will keep stacking. We could avoid this by having the first 16 digits of the ID as the timestamp, and the remaining digits as the random number generated using ChaCha::rand. This could be implementable if we can make another rand function in the ChaCha library that takes the timestamp into account.

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