Add subjective limit for mod_exp #361
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This is partially dependent on gmp #362. Until this is done, we won't be 100% on hardcoded values |
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This is part of the effort to add subjective limits to the mod_exp host function (see eosnetworkfoundation/mandel#361). Adds a few additional test vectors to existing modexp test case. Adds a modexp_benchmarking test case which is not actually a test but rather a way to get measurements on the time it takes to do modular exponentiation with varying bit sizes to figure out what the appropriate limit should be for the mod_exp host function.
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This is part of the effort to add subjective limits to the mod_exp host function (see eosnetworkfoundation/mandel#361). Adds a few additional test vectors to existing modexp test case. Adds a modexp_benchmarking test case which is not actually a test but rather a way to get measurements on the time it takes to do modular exponentiation with varying bit sizes to figure out what the appropriate limit should be for the mod_exp host function.
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…p-limits-for-3.1 [3.1] Add subjective limit to mod_exp host function
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…p-limits-for-main [3.1 -> main] Add subjective limit to mod_exp host function
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#182 adds a host function
mod_expfor modular exponentiation. There are currently no limits on that. It may be necessary to enforce some limits to prevent the actual termination of a transaction from being delayed too much beyond the intended deadline timeout.Benchmarking should be done to determine what are appropriate permissive limits that prevent a contract from creating too much of a delay (less than a millisecond?) within the process of aborting the transaction. Those limits should then be enforced in the
mod_exphost function as a subjective exception (meaning it would be enforced at the BPs and not actually part of the protocol).The text was updated successfully, but these errors were encountered: